2290results about How to "Reduce dosage" patented technology

Organic high polymer coagulant and preparation method thereof

The invention relates to an organic polymer flocculating agent and a process for preparation thereof, in particular to a water-soluble polymer flocculating agent and a process for preparation thereof. The molecular weight of the water-soluble polymer flocculating agent is 1*10 4-1*10 6, and the flocculating agent is formed through mixing and copolymerization of three monomers of itaconate, quaternized alkyl acrylic dialkyl aminoethyl ester and tertiary amine alkyl acrylic dialkyl aminoethyl ester, a certain amount of polymerization promoter is added, previously redox initiator is employed, and latterly water-soluble azo type initiator is added, thereby guaranteeing sufficiently high molecular weight of the flocculating agent, increasing conversion rate and reducing monomer content. The monomers selected by the product are nontoxic, and the process for preparation is simple and is suitable for promotion and application, under the condition of unchanging the anion degree, the cationic degree can be freely regulated, and the application range is enabled to be wider. The flocculating agent combines the advantages of the three monomers; thereby the performance of the flocculating agent is more excellent with more varieties of processed wastewater, less input amount and more obvious social and economical benefits.

Flame retardant high-wood content wood-plastic composite material and preparation method thereof

A flame retardant high-wood content wood-plastic composite material and a preparation method thereof relate to a wood-plastic composite material and a preparation method thereof, wherein the problem of easy burning of the wood-plastic composite material with high wood content and the problems of high fire retardant addition amount, low anti-flaming efficiency and high cost of the existing flame retardant treatment technology are solved. The material is prepared from a fire retardant for wood fibers, a wood fiber material, thermoplastic plastics, a fire retardant for plastics, a coupling agent, a lubricant, an antioxidant, a smoke eliminating agent and auxiliaries. The method comprises the following steps of: weighing raw materials; preparing a flame retardant processing fluid; preparing aflame retardant wood fiber material; performing melting granulation on the thermoplastic plastics and the fire retardant for plastics to obtain flame retardant thermoplastic plastic base particles; mixing the flame wood fiber material with the flame retardant thermoplastic plastic base particles, the coupling agent, the lubricant, the antioxidant, the smoke eliminating agent and the auxiliaries, thereby obtaining a premix; performing melting compounding on the premix to obtain a melt material; and molding the melt material to obtain the flame retardant high-wood content wood-plastic compositematerial. The dosage of the fire retardant in the flame retardant high-wood content wood-plastic composite material is low; and the flame retardant high-wood content wood-plastic composite material is high in flame retardant efficiency and low in cost.

Use of lipid conjugates in the treatment of disease

The invention provides novel methods for treating disease based upon the medicinal use of lipids and phospholipids covalently bound to physiologically acceptable monomers or polymers. Phosphatidylethanolamine moieties conjugated to physiologically acceptable monomers and polymers (PE conjugates) manifest an unexpectedly wide range of pharmacological effects, including stabilizing cell membranes; limiting oxidative damage to cell and blood components; limiting cell proliferation, cell extravasation and (tumor) cell migratory behavior; suppressing immune responses; and attenuating physiological reactions to stress, as expressed in elevated chemokine levels. The surprisingly manifold pharmacological properties of the PL-conjugates allow for the invention, disclosed herein, of novel methods for the treatment of a diverse range of disease states, including obstructive respiratory disease, including asthma; colitis and Crohn's disease; central nervous system insult, including blood brain barrier compromise, ischemic stroke, and multiple sclerosis; contact dermatitis; psoriasis; cardiovascular disease, including ischemic conditions and prophylaxis for invasive vascular procedures; cellular proliferative disorders, including anti-tumor vasculogenesis, invasiveness, and metastases; anti-oxidant therapy; hemolytic syndromes; sepsis; acute respiratory distress syndrome; tissue transplant rejection syndromes; autoimmune disease; viral infection; and hypersensitivity conjunctivitis. The therapeutic methods of the invention include administration of phosphatidylethanolamine bound to carboxymethylcellulose, heparin, hyaluronic acid, polyethylene glycol, and hemaccel. Disclosed herein are also new compounds comprised of phospholipid moieties bound to low molecular weight monomers and dimers, including mono- and disaccharides, carboxylated disaccharides, mono- and dicarboxylic acids, salicylates, bile acids, and fatty acids.

Method for preparing novel tannic acid curing chitosan heavy metal ion adsorbent

The invention relates to a method for preparing a novel tannic acid curing chitosan heavy metal ion adsorbent. The method comprises the following steps of: weighing certain amount of chitosan, dissolving into water, adding certain amount of macromolecule monomer, stirring toil the macromolecule monomer is completely dissolved, adding an initiator, stirring for reacting until turbidness occurs, filtering, centrifuging a filtrate on a high speed centrifuge, and washing precipitation to neutrality with water to obtain chitosan particles; weighing tannic acid and dissolving into water, adding the chitosan particles and reacting at constant temperature; introducing a product into an epoxy chloropropane solution, reacting at room temperature reaction, stirring in a water bath and reacting for a whole night, filtering, and washing with water to neutrality to obtain novel curing tannic acid chitosan particles. The novel tannic acid curing chitosan heavy metal ion adsorbent can quickly adsorb heavy metal ions from a water solution and quickly elute the heavy metal ions adsorbed on the adsorbent with a very small amount of acid, can be recycled more than 200 times and have the life as long as six months; in addition, the novel tannic acid curing chitosan heavy metal ion adsorbent can be used for processing heavy metal ion sewage, enriching trace amount heavy metal ions, recycling noble heavy metal ions and have low cost and excellent property.

Method for preparing fermentation carbon source by hydrolysis and acidification of biomass raw materials

The invention belongs to the field of lignocellulose biomass pretreatment and application thereof, and particularly relates to a method for preparing a fermentation carbon source by hydrolysis and acidification of biomass raw materials and application thereof. In the conventional methods for biotransformation by using active sludge, the active sludge is directly adopted for anaerobic digestion, but the organic substance content of the active sludge is low, so the concentration of the acidified organic acid is too low, then the fermentation efficiency is low, and the organic acid is difficultly used as an effective carbon source. The domesticated active sludge is used as seed sludge in the method, and the method comprises the following steps of: mixing proper pretreated lignocellulose raw materials and the active sludge uniformly in a certain mass ratio in a reactor, regulating the solid-liquid ratio and the pH value by adding water, then introducing nitrogen into the reactor, performing anaerobic acidification, and separating the acidified solution to obtain the fermentation carbon source. The method can realize clean and efficient utilization of the lignocellulose raw materials, and has the advantages of high hydrolyzed and acidified organic acid concentration, short domestication time, reduction of production cost of the microbial fermentation carbon source and the like.

Arsenic removal material by adsorption of electrochemistry strengthened nano ferro-manganese loaded carbon fiberand arsenic removal method by using same

ActiveCN102641722AReduce dosageIncreased Electrosorption CapacityOther chemical processesDispersed particle separationReverse currentOxide
The invention discloses arsenic removal material by adsorption of electrochemistry strengthened carbon fiber loaded nano ferro-manganese and an arsenic removal method by using the material. The material comprises a substrate material and nano ferro-manganese oxidesloaded on the substrate material through electrochemistry and electro-deposition; the substrate material can be carbon fiber yarns, carbon fiber felts or graphite carbon fiber felts, and the shape of the substrate material is cylindrical or flat-shaped; and when a three-dimensional electrode is used, the substrate material is activecarbon. The arsenic removal material is prepared by performing ferro-manganese metal salt surface electro-deposition on the substrate material by electrifying. The arsenic removal method comprises the following steps of: carrying out coupling electro-absorption in the process of arsenic removal by chemical absorption, and strengthening the arsenic removal effect by using the electro-absorption action of a charging capacitor in the absorption process; applying reverse current to facilitate arsenic desorption on a surface of ferro-manganese hydrated oxide in a regeneration process, and simultaneously applying high voltage to perform hydrolysis, hydrogen generation and oxygen evolution so as to facilitate activity regeneration of the ferro-manganese oxide. With the adoption of the material and the method, the high absorption effect and the quick regeneration capability can be achieved.

Method for synthesizing mesoporous mordenite

ActiveCN102190316AReduce dosageThe synthesis process is simpleMordenite aluminosilicate zeoliteChemistryPolyvinyl butyral
The invention relates to a method for synthesizing mesoporous mordenite, which mainly solves the problems that precious materials are needed to serve as mesoporous templates, the synthesis process is complicated and the cost is high in the prior art for preparing mesoporous zeolite. The method comprises the following steps of: mixing a silicon source, an aluminum source, an organic amine structure directing agent (SDA), a polymer mesoporous template agent R and water, wherein in the mixture, the molar ratio of SiO2 to Al2O3 is 8-500, the molar ratio of H2O to SiO2 is 5-100, the molar ratio ofSDA to SiO2 is 0-0.5, and the weight ratio of the polymer mesoporous template agent R to SiO2 is 0.05-3; and crystallizing the mixture at the temperature of between 100 and 200DEG C for 1 to 10 days to obtain a crystallization product, and washing, drying and roasting the crystallization product to obtain the mesoporous mordenite, wherein the polymer mesoporous template agent R is at least one ofstarch, dextrin, cellulose, polyethylene glycol, polyvinyl alcohol, polyether, polyvinyl formal and polyvinyl butyral. The technical scheme well solves the problems. The synthesized mesoporous mordenite has a micropore-mesopore composite structure; the synthesis process is simple; the mesoporous mordenite with the composite hole structure can be synthesized at low cost, better technical effect isachieved, and the method can be used for industrial production of the mesoporous mordenite.

Heavy-metal-containing electroplating wastewater treatment and heavy metal recycling method

The invention discloses a heavy-metal-containing electroplating wastewater treatment and heavy metal recycling method, which includes the following steps: low-concentration electroplating wastewater containing heavy metal ions is led to pass through ion exchange resin, the heavy metal ions contained in the electroplating wastewater are led to be completely absorbed by the ion exchange resin, and clean water is extracted until absorption of the ion exchange resin reaches saturation; eluent is added to lead the heavy metal ions absorbed by the ion exchange resin to be separated from the the ion exchange resin so as to produce high-concentration electroplating wastewater; a reductant is then added to the high-concentration electroplating wastewater for reduction reaction to obtain water-insoluble reduction products containing heavy metal ions; a flocculant is added to accelerate coagulation of the reduction products; finally, the methods such as filtration and centrifugation are adopted to separate sediment, and heavy metal materials are recycled through high-temperature calcinations to serve as useful industrial raw materials. The heavy-metal-containing electroplating wastewater treatment and heavy metal recycling method has the advantages of being low in cost, high in efficiency, strong in universality and the like, effectively reduces secondary pollution, and is suitable for being widely used in the electroplating and electronic industries.
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