53 results about "Biosorption" patented technology

The invention belongs to the technical field of soil fertilizers, and particularly relates to a soil conditioner and a preparation method thereof. Wherein the soil conditioner is prepared from the following raw materials in parts by weight: 30 to 40 parts of modified charcoal, 20 to 30 parts of microbial complexing agent, 15 to 25 parts of humic acid and 1 to 5 parts of biological enzyme; according to the microbial complexing agent, dopamine grafted and modified nano silicon dioxide and hydroxyapatite form a composite shell, pseudomonas aeruginosa and bacillus subtilis are wrapped, and the microbial complexing agent has the functions of protecting microorganisms, adsorbing heavy metals and slowly releasing phosphorus elements; the modified biochar is compounded with the attapulgite through acid-base treatment to form a porous structure with physical inlaying and chemical functional groups synergistic, so that the adsorption and fixation capability on heavy metals and organic pollutants is remarkably improved; the biological enzyme accelerates organic phosphorus conversion, and enzymatic hydrolysate provides a phosphorus source for microorganisms, promotes microorganism breeding, effectively increases the content of available phosphorus in soil, and enhances the stability of a remediation system.

The invention relates to a method for repairing light rare earth and heavy metal compound polluted soil, which is characterized in that the compound polluted soil is repaired by adopting bacillus sp., the bacillus sp. Is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation number is CGMCC No.22085, and the preservation date is March 29, 2021. The repairing process comprises the following steps: mixing the bacillus subtilis bacterial liquid with the cementing liquid to obtain a mixed liquid; mixing the air-dried polluted soil with the mixed solution, and filling the mixture into a mold for reaction; the mold is communicated with a grouting pipe to inject the mixed liquid, and multi-round pumping is carried out; and after pumping is completed, the polluted soil is maintained and naturally air-dried. According to the method, dominant strains are adopted, biological adsorption and biological mineralization are combined, and effective control over the light rare earth and heavy metal compound contaminated soil is achieved under the action of dual bioremediation.

The application discloses magnesium modified straw biochar as well as a preparation method and application thereof, and belongs to the technical field of bio-adsorption materials. The preparation method of the magnesium modified straw biochar comprises the following steps: after straw is immersed in a magnesium salt solution (the concentration of the magnesium salt solution is 0.05-0.5 mol / L) and carbonized, the magnesium modified straw biochar is obtained. The magnesium modified straw biochar prepared by the application has a high specific surface area and rich surface functional groups, can effectively adsorb phosphorus in sewage, and realizes effective removal of phosphorus in eutrophic water bodies.

The invention discloses a composite porous phosphorus removal filter material and a preparation method thereof, the filter material is prepared by taking aluminum hydroxide, limestone, concrete, perlite, modified zeolite, a foaming agent and a mixture of euglena, chlorella and spirulina as main components through the steps of pulping, foaming, coating, curing, crushing, screening and the like. The phosphorus removal efficiency is remarkably improved through ion exchange and chemical adsorption effects of the modified zeolite, the performance of the filter material is further enhanced through biological adsorption and biological assimilation effects of the microalgae, and in addition, the phosphorus removal effect of the filter material is further improved through stable precipitates formed by special components and phosphate. The filter material has the advantages of efficient phosphorus removal, environmental protection, no pollution, multifunctionality, economical efficiency and the like, is suitable for the fields of sewage treatment plants, lake remediation, aquaculture and the like, and has the advantages of high phosphorus removal efficiency, simple preparation process, low raw material cost and easiness in industrial production.

The present application relates to the technical fields of wastewater purification and energy storage material, and discloses an energy storage carbon material, a preparation method and application thereof.The method comprises the following steps: carbonizing biomass waste enriched with metal ions to obtain an energy storage carbon material.The energy storage carbon material can be used to prepare a secondary metal / ion battery.The energy storage carbon material prepared by the present application can promote the uniform deposition of metal in the charging and discharging process, avoid the safety problems caused by dendrite growth, and at the same time, the metal ions in industrial wastewater can be used to prepare high-value-added secondary battery energy storage materials by means of a simple and low-cost method of biosorption.

The utility model belongs to the technical field of wastewater treatment devices, and discloses a device for treating low-pollution wastewater by utilizing a biological adsorption material, which comprises a shell, a bracket is fixedly arranged at the top of the shell, and a limiting frame is fixedly arranged at the top of the bracket. Through the arrangement of the limiting frame, the moving plate, the storage box and the driving motor, an operator stores a biological adsorption material in the storage box, then the driving motor is started, a rotating shaft drives a rotating rod to rotate, and then a hinge rod can push the moving plate to move under the limiting effect of the limiting frame; and along with continuous rotation of a rotating shaft, a hinge rod can drive a moving plate to do left-right reciprocating motion in a limiting frame, so that a biological adsorption material in the storage box can be more comprehensively thrown into wastewater through a discharging pipe, the wastewater stirring time is shortened, and the wastewater treatment efficiency is improved. The wastewater treatment efficiency is improved.

The application discloses a method for repairing light rare earth and heavy metal composite contaminated soil, and adopts bacillus megaterium (Bacillus megaterium) to repair the composite contaminated soil. Oceanobacillus sp. The bacillus megaterium is preserved in the China General Microbiological Culture Collection Center, has a preservation number of CGMCC No.22085, and is preserved on March 29, 2021. The repairing process is as follows: mixing bacillus megaterium liquid and cementing liquid to obtain a mixed liquid; mixing the air-dried contaminated soil and the mixed liquid, and then loading the mixed liquid into a mold for reaction; connecting a grouting pipe to the mold to inject the mixed liquid, and performing multiple rounds of pumping; after the pumping is completed, the contaminated soil is maintained and air-dried naturally. The application adopts the advantage strain, combines biological adsorption and biological mineralization, and realizes the effective control of the light rare earth and heavy metal composite contaminated soil under the action of double biological repair.

The application discloses a kind of metal organic framework-based biological trickling filter fillings, including soluble metal salt, organic ligand and binder.It also includes preparation method, including soluble metal salt is mixed with organic ligand in solvent, heating reaction, obtain metal organic framework material;Metal organic framework material is mixed with binder granulation, obtain metal organic framework-based biological trickling filter fillings.The preparation method of the biological trickling filter fillings is simple, structural performance is stable, with great specific surface area and strong biological adsorption capacity, sulfur-containing malodorous waste gas has very good adsorption effect at the same time, degradation efficiency is higher, can effectively make adsorption method and biological method be combined, and play the advantages of two, compared with prior art, the removal rate of hydrogen sulfide, organic sulfide, benzene series in sulfur-containing malodorous waste gas can reach 99.5% in the application.

The invention discloses a titanium white waste acid treatment process, and relates to the technical field of industrial waste regeneration. The titanium white waste acid is subjected to microfiltration and membrane electrolysis treatment, sulfuric acid is separated and recycled under the control of constant pressure and constant current, and residual liquid is subjected to electrodialysis treatment to oxidize ferrous ions into ferric hydroxide precipitates and calcined into ferric oxide; carrying out reduction leaching on the titanium-containing material, hydrolyzing to generate metatitanic acid, and calcining to obtain titanium dioxide; oxidizing the hydrolysate to precipitate vanadate, and calcining to obtain vanadium pentoxide; adjusting the pH value of the filtrate, selectively adsorbing scandium through a biological adsorption column, precipitating and calcining the eluent to obtain scandium oxide, and regenerating and recycling the adsorbent through acid pickling. According to the process, through multi-stage treatment and biological adsorption, resource recycling of sulfuric acid, iron, titanium, vanadium and scandium components in the waste acid is achieved, the process is clean and efficient, secondary pollution of a traditional process is avoided, and a green low-carbon solution is provided for waste acid treatment in the titanium dioxide industry.

The application provides a groundwater in-situ remediation system and method of multiple biological permeation reaction wall coupling ultrasonic waves and plant remediation, the groundwater in-situ remediation system comprises a multiple biological permeation reaction wall, a PLC control system and an artificial plant ecological remediation area, the multiple biological permeation reaction wall is arranged in a funnel-gate type engineering, the funnel part blocks the contaminated groundwater through a vertical cement curtain, an ultrasonic generator module is arranged in front of the gate part of the multiple biological permeation reaction wall, the multiple biological permeation reaction wall is divided into two layers, the filling material of the first layer permeation reaction wall is mainly composed of zero-valent iron, iron oxide and construction waste, the filling material of the second layer biological permeation reaction wall is mainly composed of high-performance biological adsorption zeolite and ORC slow-release material calcium peroxide, a microbial bacteria liquid injection pipe is arranged in the second layer biological permeation reaction wall, and monitoring wells are arranged on the two sides of the multiple biological permeation reaction wall and the artificial plant ecological remediation area.The application can treat and remediate multiple composite pollutants at a time, and the pollutant degradation efficiency is improved.

The invention discloses high-salt heavy metal wastewater advanced treatment equipment and method based on gradient purification, and relates to the field of wastewater treatment.The high-salt heavy metal wastewater advanced treatment equipment comprises a cyclone separation module, a conditioning module, a desalting module and a heavy metal advanced removal module which are sequentially connected in the wastewater treatment flow direction; the cyclone separation module, the conditioning module, the desalting module and the heavy metal deep removal module are all borne by a rigid rack and packaged through detachable sealing cover plates so as to form the integrated treatment equipment connected in series according to the treatment gradient. According to the treatment equipment and method, four wastewater treatment processes of physical separation, chemical conditioning, electrochemical desalination and biological adsorption are subjected to modular integration and gradient series connection, a step-by-step purification scheme from macroscopic treatment to microscopic treatment and from coarse treatment to fine treatment is constructed, pollutants can be efficiently separated before entering a core membrane unit, and the treatment efficiency is improved. The impact of the high-salt heavy metal wastewater on the membrane separation unit is fundamentally reduced.

The utility model discloses a wastewater treatment device based on a magnetic adsorbent, and aims to solve the problems that the existing electroplating wastewater treatment difficulty is high and the magnetic adsorbent is difficult to recover. According to the wastewater treatment device based on the magnetic adsorbent, a tank body of an adsorption reaction tank is cylindrical, a water decanter is arranged in the adsorption reaction tank, a first electromagnet device is arranged at the lower part of the cylindrical tank body of the adsorption reaction tank, and a second electromagnet device is arranged at the inverted conical tank bottom of the adsorption reaction tank; a first water outlet of the raw water tank is communicated with the adsorption reaction tank through a first water pipe, one end of a second water pipe is communicated with a second water outlet of the raw water tank, the other end of the second water pipe is communicated with a water inlet of the adsorption reaction tank, and a water injector is arranged on the second water pipe. Based on the magnetic separation characteristic of the magnetic composite adsorbent, the adsorption-magnetic separation reactor is designed, heavy metal wastewater is effectively treated, and meanwhile efficient separation and concentration of the magnetic biological adsorbent can be achieved through the electromagnet.

The invention relates to the technical field of sewage treatment, and particularly discloses a domestic sewage advanced treatment process which comprises the following steps: mechanical grating impurity removal, balancing, integrated air floatation, anaerobic treatment, aerobic treatment, precipitation and biological adsorption. Wherein in the anaerobic treatment step, the hydraulic retention of an anaerobic tank is 8-10 hours; the microorganism concentration of anaerobic compound bacteria in the anaerobic tank is 3-6g / L; the anaerobic compound bacteria are a mixture of clostridium butyricum, bifidobacterium longum and methanogens; furthermore, the weight ratio of the clostridium butyricum to the bifidobacterium longum to the methanogens is 1: (0.4-0.6): (1.8-2.3). According to the domestic sewage advanced treatment process provided by the invention, refractory organic matters, suspended solids and ammonia nitrogen in domestic sewage can be effectively removed, so that the effluent quality is stable, and higher discharge and reuse standards can be reached.

Provided herein is a process for the removal of micropollutants and / or other pollutants from water, involving subjecting the water to a consecutive combination of biological adsorbent filtration (BAF) followed by oxidation treatment (OT), preferably ozone treatment. In a preferred embodiment, an adjustable amount of the OT effluent, preferably an adjustable amount ranging between 10-100%, more preferably 20-90%, more preferably 20-80%, most preferably 20-50% of the OT effluent, is recirculated to the BAF. The process may involve monitoring the formation of oxidation products at the end of the OT, and / or for measuring TOC, DOC, SUVA, ammonium and / or specifically targeted pollutants in or at the end of the BAF, and controlling the amount of BAF-OT treated water which is recirculated to the consecutive steps of BAF and OT based on the output of the monitoring step.

The invention discloses a resource type sewage treatment system and method based on an MBBR process, and belongs to the field of sewage treatment. The system comprises a carbon source transfer and screening pretreatment unit, an MBBR biochemical treatment unit, a biological adsorption sludge acquisition unit and a mud-water deep separation unit which are sequentially connected, and further comprises a sludge return pipeline, a heat energy extraction unit, an EPS extraction unit and a sludge synergistic fermentation unit. The heat energy extraction unit can achieve whole-process sewage heat extraction, after the EPS extraction unit extracts EPS production environment-friendly materials, residual sludge returns to a fermentation system for secondary methane production, and gradient utilization of a carbon source is achieved. Through the integrated design of carbon source directional screening, sludge closed-loop backflow, mud-water deep separation characteristic adaptation and resource linkage recovery, the essential bottleneck of the prior art is broken, and synchronous synergism of sewage treatment and carbon, heat and material source recovery is achieved.

The invention discloses a biological treatment method for triphenylmethane dye wastewater, and belongs to the technical field of biological sewage treatment. The dye is removed by utilizing the self-assembled biological particles through biological adsorption and biological transformation, and the preparation method of the self-assembled biological particles comprises the following steps: inoculating a certain amount of aspergillus niger spore suspension into a liquid culture medium in a conical flask, culturing for 3-4 days in a shaking table to form mycelium pellets, adding a certain amount of activated sludge, and uniformly stirring to obtain the self-assembled biological particles. And continuously culturing in the shaking table for 1-2 days to form the self-assembled biological particles. And adding the prepared self-assembled biological particles into triphenylmethane dye wastewater with a certain concentration, and reacting in a shaking table for 8 hours. The method effectively solves the problem that the triphenylmethane dye wastewater is difficult to biologically remove, provides an economical and efficient biological treatment technology for the wastewater, and has wide application prospects in treatment of explosive, pesticide, medicine and dye wastewater.

The present application relates to a kind of sewage advanced treatment high-performance biological filler and its preparation method, the biological filler includes nitrogen removal component, phosphorus removal component, inorganic carbon source component, active component, 2-5 parts filler reinforcing component, rare element component, pore-forming agent.The sewage advanced treatment high-performance biological filler of the present application does not need any organic adhesive agent and pore-forming agent, can simultaneously realize autotrophic denitrification, chemical phosphorus removal, heavy metal adsorption passivation, microorganism adsorption biofilm formation and other multiple functions, the physical property of filler is better, sewage treatment effect is significantly improved, and greatly reduces processing cost.

Application of Lysinibacillus fusiformis in removing hexavalent chromium from eutrophic wastewater, belonging to the field of microbial technology. The strain is preserved in the General Microbiological Center of the China Committee for Culture Collection of Microorganisms, with the preservation address being No. 3, Yard 1, Beichen West Road, Chaoyang District, Beijing, the preservation number being CGMCC No. 10053, and the preservation name being Lysinibacillus fusiformis WTXJ1-4, and the preservation date is November 25, 2014. Through single-factor experiments and orthogonal experiments for optimization, the suitable biological adsorption conditions of this strain for hexavalent chromium in eutrophic wastewater were determined as follows: pH 2.0, initial potassium dichromate concentration 50 mg / L, adsorption time 24 h, wet cell mass dosage 1.0 g / L, adsorption temperature 34 °C, and rotation speed 160 r / min. When reaching equilibrium under these optimized adsorption conditions, the removal rates of hexavalent chromium and total chromium in eutrophic wastewater by viable cells of WTXJ1-4 reached 91.6% - 94.8% and 42.2% - 43.8% respectively. Lysinibacillus fusiformis Viable cells of WTXJ1-4 have strong adsorption-reduction ability, tolerance and resistance to hexavalent chromium in eutrophic wastewater, and their effective ranges are potassium dichromate concentrations of 0 - 100 mg / L, 100 - 300 mg / L, and 300 - 500 mg / L respectively.

The present invention belongs to the technical field of industrial wastewater treatment and discloses a microbial remediation method for heavy metal contaminated wastewater, specifically: using Vibrio natriegens to remove Cu in wastewater. 2+ and / or Cr 6+ The present invention first discovered that Vibrio natrii can be used as a biosorbent to remove heavy metals, especially Cu 2+ Cr 6+ removal, can be used to repair different Cu 2+ Cr 6+ It can be used in wastewater with a high degree of pollution, and Vibrio natrium grows quickly and has a low cultivation cost. It can be seen that the use of Vibrio natrium to repair heavy metal pollution has good application prospects.

The application provides a method for cooperatively recovering copper in metallurgical sludge by bio-adsorption and complex breaking, comprising the following steps: 1) in a circulating system, pumping organic acid solution into a metallurgical sludge packed column and an ethylenediaminetetraacetic acid dianhydride modified bio-adsorbent packed column in sequence, and carrying out cyclic leaching; 2) after the cyclic leaching, adopting a calcination method to recover copper-based recovery materials adsorbed on the modified bio-adsorbent. The recovery process combining organic acid leaching and bio-adsorption complex breaking can realize efficient and selective leaching and recovery of copper ions under low acidity conditions; the recovery process is simple and convenient to operate, the organic acid complexing agent can be reused, the cost is low, and the method is suitable for popularization and application.

The present invention provides a magnetically enhanced method for capturing carbon sources in wastewater, aiming to address the problems of low carbon source resource utilization and high carbon emissions in existing wastewater treatment processes. The method comprises: adding a coagulant and a magnetic medium to wastewater to coagulate into intermediate effluent one; separating intermediate effluent one with a first magnetic separation device to obtain concentrated carbon source one and intermediate effluent two; adding a biological flocculant and a magnetic medium to intermediate effluent two to carry out a biological adsorption reaction to obtain intermediate effluent three; adding a coagulant and activated carbon to carry out flocculation and adsorption to obtain intermediate effluent four; separating intermediate effluent four with a second magnetic separation device to obtain concentrated carbon source two and effluent; subjecting concentrated carbon source one and concentrated carbon source two to anaerobically digestion to obtain methane and a digested mud-water mixture; and dispersing and recovering the digested mud-water mixture with a magnetic recovery device to obtain recovered magnetic media and sludge. This method has a high capture rate of carbon source organic matter and can achieve the effects of low-carbon energy conservation and emission reduction.

The invention discloses a method for rapidly detecting heavy metal pollution by utilizing microalgae based on a terahertz metamaterial sensor, which comprises the following steps of: acquiring terahertz frequency shift spectrograms of heavy metal stress microalgae with different concentrations on the basis of a biological adsorption mechanism of the microalgae and the terahertz metamaterial sensor; the analysis finds that the transmission peak of the microalgae at about 2.069 THz gradually moves to low frequency along with the increase of the heavy metal concentration, and a transmission peak frequency shift-heavy metal concentration quantitative relation curve graph is established.

The invention discloses an innocent treatment process for non-ferrous metal hazardous waste, relates to the field of metal treatment, and aims to solve the problems of low heavy metal recovery rate, poor solidified body stability, high secondary pollution risk and the like caused by insufficient dispersion and synergism of a conventional sectional treatment process technology. The invention provides a pretreatment-core treatment-post-treatment whole-process synergistic process. In the pretreatment stage, through the combination of biological adsorption and chemical precipitation, organic matters are decomposed, and heavy metals are preliminarily fixed; in the core treatment stage, plasma is adopted to melt and decompose organic pollutants, and heavy metal is reduced and recovered through a microwave molten pool; and in the post-treatment stage, hydroxyapatite mineralization and vitrification melting are coupled to form a stable solidified body. According to the technology, by limiting key parameters such as biological adsorption time, microwave molten pool temperature and vitrification base material proportion, efficient recovery of the heavy metal, improvement of compressive strength of a solidified body and reduction of the leaching rate of the heavy metal are achieved, and the cooperative treatment problem of heavy metal immobilization-organic matter decomposition-long-term stability is comprehensively solved.

This invention discloses a highly efficient integrated anaerobic ammonia oxidation reactor and treatment method for kitchen wastewater sludge, belonging to the field of wastewater treatment technology. The reactor includes a tank and integrated pretreatment module, denitrification reaction module, solid-liquid separation module, temperature control module, aeration module, and sludge circulation module. The pretreatment module is located at the bottom of the tank and includes a grid filter unit and a bio-adsorption unit; the denitrification reaction module is located above the pretreatment module and is filled with granular anaerobic ammonia oxidation composite bacteria; the solid-liquid separation module is located above the denitrification reaction module and includes a three-phase separator and an inclined plate sedimentation unit. This invention, through its integrated design, achieves pretreatment, denitrification reaction, solid-liquid separation, and precise control within a single tank, solving the problems of low integration, easy loss of bacteria, and high operating costs in existing technologies. It has advantages such as small footprint, high efficiency, stable operation, and no need for external carbon sources, making it particularly suitable for kitchen wastewater sludge treatment.

The application discloses a kind of sewage efficient biodegradation device, it is related to sewage treatment technical field, including processing jar, water inlet component, biological adsorption component and biological treatment agent feeding assembly.The application is processed by setting up processing jar, sewage can pass through biological adsorption component, biological adsorption film in biological adsorption component can carry out biological adsorption treatment to sewage, to reach the biological treatment of sewage, biological adsorption component is set to "U" shape structure, sewage can enter biological adsorption component in the intermittent mode, in the intermittent process of sewage delivery, sewage can be kept in biological adsorption component, so as to improve the processing effect of biological adsorption component to sewage, multiple biological adsorption components cooperate, in realizing the circulating delivery process of sewage, the biological treatment time of sewage is extended, so as to effectively improve the biological treatment effect of sewage.

The invention discloses a preparation method and application of modified corn straw biochar, and relates to the technical field of preparation of environment-friendly biological adsorption materials. According to the scheme, the calcium chloride-urea modified corn straw is adopted to prepare the biochar, the calcium-nitrogen modified biochar material is prepared through a pyrolysis method, then a hydrothermal medium is regulated and controlled, and the modified medium is better loaded on the surface of the biochar under the high-temperature and high-pressure hydrothermal condition, so that the biochar is prepared. The calcium chloride-urea modified biochar material prepared by the invention has the advantage of excellent removal of quinolone pollution in a water body.

The utility model relates to the technical field of urban drainage, and discloses a sewage intercepting gutter inlet which comprises a sewage intercepting box with the top open, a supporting cover and a T-shaped filtering box with the top open, and a mounting groove is formed in the top side of the interior of the sewage intercepting box; bulk sundries are preliminarily intercepted through the coarse grid layer, tiny particles and part of oil stains are further captured through the fine filter screen layer, organic pollutants are degraded through the biological adsorption layer by means of specific microorganisms, the water quality purification effect is improved, and after a period of time of use, the T-shaped filter box can be taken down from the trash holding box through the lifting handle, so that the water quality purification effect is improved. According to the present invention, the T-shaped filter box is arranged, such that the large impurities in the T-shaped filter box can be conveniently cleaned, the coarse grid layer, the fine filter screen layer and the biological adsorption layer can be conveniently cleaned and replaced by pulling the insertion plate upwards, and when the waterlogging occurs due to the large water flow, the worker can lift the biological adsorption layer, the fine filter screen layer and the coarse grid layer upwards through the notches according to the actual situation so as to take out the biological adsorption layer, the fine filter screen layer and the coarse grid layer; and the drainage capacity of the gutter inlet is further improved.

The invention discloses a microbial electrolysis cell device and method for purifying phosphorus pollution by utilizing agricultural waste biochar. The device comprises an electrolytic tank main body (1) and a circulating system. The electrolytic tank main body (1) is of a single-chamber structure, and the constant-voltage power supply (12) is connected with the anode bar (2) and the cathode bar (3). And the cathode bar (3) adopts a composite structure of a permeable electrode shell (31) and a biochar electrode (32), so that the electrode is convenient to replace and recycle. The device can be further provided with a monitoring system and a reaction maintaining system, and automatic regulation and control are achieved. The method comprises the steps of microbial inoculation and biofilm formation, pretreatment feeding, calcium source supplementation, electrolytic adsorption coupling phosphorus removal, calcium phosphate recovery and the like, and efficient phosphorus removal and phosphorus resource recovery are achieved through the synergistic effect of electrochemistry and biological adsorption under the condition of low voltage (0.5-1.5 V). The method is suitable for treating multi-source phosphorus-containing wastewater in agriculture, industry, life and the like.

Pollution by phosphates affect aquatic life as they have side effects even at very low concentrations. Silica molybdate is prepared by first chlorinating silica sand using phosphorous pentachloride to give chlorinated silica which is aminated using ethylenediamine and thereafter treated with sodium molybdate. The molecular structure of the silica molybdate was characterized using Fourier Transform Infrared (FT-IR). FT-IR results showed Adsorption bands at 854cm-l and 542cm-l which were attributed to Mo=O and Mo-O stretching in molybdate. Peaks observed at 1388 and 1662cm-1 were attributed with the vibration mode of Mo-OH bond and bending mode of adsorbed water. Spectra peaks observed at 542, 634.58 and 898.97 cm-1 were attributed to the adsorption of molybdate. The physical adsorption parameters which were examined using batch adsorption system were; temperature, pH, contact, time, initial concentration using sorption models, adsorption kinetics and thermodynamics. Results showed that optimum pH for biosorption of P042- was 6.0, optimal contact time was 30 minutes, optimum temperature was 45°C. The experimental results obtained showed that the maximum phosphate adsorption of silica molybdate at optimum conditions was found to be 94.73% in water.

This invention provides a solid dosage product in the form of ammonia gas (NH3) bioadsorbent granules and a method for making it by utilizing the organic acid content of starfruit (Averrhoa bilimbi) extract. This bioadsorbent granule consists of a natural polymer carrier matrix component in the form of a combination of sodium alginate and gelatin composites with a weight ratio of 1:1, and an active substance in the form of starfruit extract of 15% w / w to the total weight of the matrix base. The manufacturing method is carried out through an ionotropic gelation technique by dissolving the polymer matrix, mixing the starfruit extract homogeneously using a magnetic stirrer at a speed of 500 rpm and a temperature of 40oC, then dripping the mixture into a 0.1 M calcium chloride (CaCl2) hardener solution to form a porous solid phase cross-link.Based on FTIR analysis, these granules have active sites in the form of functional groups –OH, C=O, and COO- that capture ammonia gas molecules through acid-base interactions into a stable form of ammonium ions (NH4+) and are strengthened by hydrogen bonds. The application of these granules is able to reduce ammonia gas emissions in open poultry farm waste areas with a reduction efficiency of up to 91.3% or until the ammonia level reaches 0 ppm.