57results about How to "Accelerates the biodegradation process" patented technology

Wastewater treatment systems, methods and apparatus for polishing a wastewater stream comprising a plurality of contaminants are provided. One system includes a vessel containing a plurality of natural media filtration agents selected to remove selected ones of the plurality of contaminants from the wastewater stream. In one embodiment, the vessel includes a bed of bauxite residue and at least one other natural media filtration agent. In another embodiment, the vessel includes a bed of compost and at least one other natural media filtration agent. The vessel includes a wastewater inlet that is in fluid communication with one or more of the natural media filtration agents. The vessel includes a wastewater outlet that is in fluid communication with one or more of the natural media filtration agents.

Methods and apparatus employing membrane filtration in biodegradation processes for treatment of wastewater are described. A bioreactor system is described having an equalization system, a membrane bioreactor system, and a controller. Aeration systems for a membrane bioreactor, such as a mixer, and an ultrafilter subsystem are also described, as is a rotary membrane ultrafilter.

The present invention relates to a method for degrading a plastic containing non-biodegradable polymers comprising submitting said plastic to at least one enzyme for modifying a polymer of said plastic which has a methane potential less than 5 Nm3/t+/−20%, wherein at least one product resulting from the modification exhibits a methane potential greater than 10 Nm3/t+/−20%.

A quaternary nitrogen-containing corrosion inhibitor of formula

wherein

is an aromatic, nitrogen-containing ring of 5 to 14 ring atoms, optionally containing an additional N, O or S ring atom and optionally substituted with one or more alkyl, alkenyl, aryl, arylalkyl, cycloalkyl, amino, aminoalkyl, alkoxy, hydroxylalkyl, or cyano groups, or a mixture thereof, Y is a group of formula —OC(O)R₁ or —C(O)R₁; L is C₁-C₁₀ alkyl, C₂-C₁₀ alkenyl or a group of formula CH₂CH(OR₂)CH₂—; R₁ is C₈-C₂₀ alkyl or C₈-C₂₀ alkenyl; R₂ is H or C(O)R₁; R₃ and R⁴ are independently selected from H, alkyl, alkenyl, amino, alkoxy, hydroxylalkyl and cyano; and X is Br, Cl or I is particularly useful for inhibiting corrosion in oil and gas field applications.

Enhanced contaminant degradation systems via rapid transfer of electrons in an environment or matrix through bioelectrochemical electron transfer circuitry, electron transfer conduit and conductive materials. Specialized circuitry may be used with respect to the anode, cathode, and transmission line design including floating cathodes, anchored anodes, and the like.

Disclosed are a biodegradable film and an enhanced biodegradable fabric and laminate prepared by laminated biodegradable films, which mainly comprise PBAT or PBS, or a mixture thereof, PLA and other degradable high molecular polymers, such as PBSA, PCL,

PCL-BS and PHA, to prepare PLA, and a new mixture of PLA and PHAs, or a mixture of PLA with PBAT and PBS, or a mixture of PLA and PHAs with PBAT and PBS or other degradable high molecular polymers. The new fabrics and laminates have a stronger biodegradability in an environment containing microorganisms and have a good shelf life, and good strength, agility and flexibility.

Systems and methods for co-enhancing contaminant degradation such as LNAPL and DNAPL degradation. Embodiments of the inventive technology may relate to assuring adequate amounts (e.g., concentrations) of certain substances (e.g., nitrogen, electron acceptor, bacteria, microbial substrate) so that degradation of LNAPL and DNAPL is enhanced as intended. Any of the inventive methods may involve the amendment of groundwater with one or more particular substance (uric acid, electron acceptors, microbial substrate, as but a few examples) in order to enhance DNAPL, and perhaps also, LNAPL degradation.

Wastewater treatment systems, methods and apparatus for polishing a wastewater stream comprising a plurality of contaminants are provided. One system includes a vessel containing a plurality of natural media filtration agents selected to remove selected ones of the plurality of contaminants from the wastewater stream. In one embodiment, the vessel includes a bed of bauxite residue and at least one other natural media filtration agent. In another embodiment, the vessel includes a bed of compost and at least one other natural media filtration agent. The vessel includes a wastewater inlet that is in fluid communication with one or more of the natural media filtration agents. The vessel includes a wastewater outlet that is in fluid communication with one or more of the natural media filtration agents.

Oil sands and like host materials are leached with a selected leachant to render pumpable the oil (including heavy oil, bitumen or kerogen and asphaltenes) as leachate. In a preferred embodiment, natural deposits are in situ leached and the leachate recovered and removed for treatment. The leachant is separated and recycled. The leachant is selected to be biodegradable and to not precipate asphaltenes, and to comprise monoterpenes of the formula C₁₀H₁₆. The overall process allows environmentally acceptable resource development and contaminated site remediation.

Polyhydroxyalkanoate compositions including hot melt adhesive compositions, biodegradable wax compositions, and protective coating compositions are provided and include a low molecular weight polyhydroxyalkanoate, a terminally-modified polyhydroxyalkanoate, or both. The compositions are biodegradable and environmentally friendly. Methods of protecting an article, such as a food product like cheese, are also provided and include coating or encapsulating the article with a composition containing a low molecular weight polyhydroxyalkanoate, a terminally-modified polyhydroxyalkanoate, or both.

An insulated removeable pond cover for settling ponds. The pond cover comprises a plurality of sealed panel units containing insulation. The panel units are linked together by means of a system of cables which pass through grommets in the panel units.

A portable composting toilet system has a compartmentalized receptacle for receiving human waste, a gray-water circulation subsystem for circulating gray water formed by mixing water with waste through the compartmentalized receptacle to promote mixing of the waste to thereby accelerate digestion of the waste, and an air-circulation subsystem for emitting air bubbles into a sludge formed at a bottom of the compartmentalized receptacle to break up the sludge to thereby accelerate digestion of the waste. The air circulation subsystem can include an air-driven pump that causes the gray water to circulate while allowing feeding pressurized air to diffuser loops in each compartment to create sludge-breaking bubbles. This portable composting toilet system so efficiently decomposes waste that the maintenance costs of hauling residual sludge to the surface (when the toilet is used underground in a mine) is significantly lower than for conventional toilets, thus providing substantial cost savings to mine operators.

Methods are provided for phytoremediating environments contaminated with at least one heavy metal or oil hydrocarbon (or both), the methods comprising use of transgenic plants which express one or more enzymes having rhamnosyltransferase activity (e.g. encoding the rh1A and rh1B genes derived from Pseudomonas aeruginosa). Also provided are related methods, materials and processes for producing and using such transgenic plants.

Disclosed is a circulating sewage/waste water purification device that improves purification efficiency of a first septic tank, improves maintenance and purification efficiency of a second septic tank, and simply exchanges a sewage purification material filled in the second septic tank with a new one. The circulating sewage/waste water purification device includes a first septic tank purifying sewage/waste water supplied from a sewage/waste water source, a second septic tank filled with a sewage purification material to purify the sewage/waste water purified by the first septic tank, and a third septic tank finally purifying the water purified by the second septic tank, the purified water, which has passed through the third septic tank, being again supplied to the sewage/waste water source. The second septic tank is comprised of a plurality of unit septic tanks deposited, each including an outer cylinder portion provided with a plurality of air vents and a funnel shaped inner cylinder portion having an opened upper surface and a plurality of sewage/waste water through holes at the lower surface.

An insect trap includes an exothermic body, and a layered body. The exothermic body is configured to include exothermic powder enclosed in an inner bag that is air permeable; the exothermic powder contains iron powder that releases heat when oxidized. The layered body is configured with layers of plate-like elements and includes gaps as a pathway of entry for an insect pest. A housing space to house the exothermic body is arranged inside the layered body. The layered body and the inner bag are made of a biodegradable raw material.

A method for enhancing biodegradation of oil in water, the method comprising:

• • positioning a hollow structure in water, the hollow structure comprising an inlet and at least one outlet; and
  • introducing an oxygen-containing fluid into the inlet of the hollow structure so that the oxygen-containing fluid exits from the hollow structure and engages the oil, wherein the oxygen-containing fluid engages the oil with sufficient force so as to cause a mechanical dispersion of the oil.

The invention relates to a novel biodegradable material prepared from PHA and PLA polymers, which can be used for manufacturing a blended product of PHA and PLA, and which can have accelerated biodegradation in a microorganic environment. The new product can be used for producing films, containers for solids and liquids, rigid or flexible packages, long-filament and short-fibre weaving, knitting and nonwoven fabrics, and composite products of fabrics, films and other materials by thermal forming, injection moulding or melt spinning. These blends also can have a long shelf life in a clean environment.

The present invention relates to a biodegradable polyamide fiber. The present invention also discloses a method for obtaining such fiber and articles made therefrom. The biodegradable polyamide fiber of the invention can be obtained by adding a biodegradation agent during the melt-spinning extrusion of a specific polyamide described below.