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137799 results about "Environmental engineering" patented technology

Environmental engineering is a professional engineering discipline that takes from broad scientific topics like chemistry, biology, ecology, geology, hydraulics, hydrology, microbiology, and mathematics to create solutions that will protect and also improves the health of living organisms and improve the quality of the environment. Environmental engineering is a sub-discipline of civil engineering and chemical engineering.

Irrigation and drainage based on hydrodynamic unsaturated fluid flow

Irrigation and drainage systems are disclosed, including a saturated zone and at least one pipe in communication with the saturated zone. The pipe(s) can be configured to comprise a tubarc porous microstructure for conducting water from the saturated zone to an unsaturated zone in order to drain the water from the saturated zone. The water can be delivered from the saturated zone to the unsaturated zone through the tubarc porous microstructure, thereby permitting the water to be harnessed for irrigation or drainage through the hydrodynamic movement of the water from one zone of saturation or unsaturation to another.
Owner:TUBARC TECH

Method and apparatus for controlling power consumption

InactiveUS20090240381A1Reduce anticipated facility energy consumptionReduce energy consumptionMechanical power/torque controlLevel controlLoad SheddingControl power
Methods and systems are disclosed for controlling energy consumption at a facility, or a group of facilities, using current and future energy prices, and seasonal and environmental information to control a load shedding scheme.
Owner:RTP CONTROLS

Autonomous surface cleaning robot for wet and dry cleaning

An autonomous floor cleaning robot includes a transport drive and control system arranged for autonomous movement of the robot over a floor for performing cleaning operations. The robot chassis carries a first cleaning zone comprising cleaning elements arranged to suction loose particulates up from the cleaning surface and a second cleaning zone comprising cleaning elements arraigned to apply a cleaning fluid onto the surface and to thereafter collect the cleaning fluid up from the surface after it has been used to clean the surface. The robot chassis carries a supply of cleaning fluid and a waste container for storing waste materials collected up from the cleaning surface.
Owner:IROBOT CORP

Reactive chemical containment system

A small scale, but effective, reactive chemical containment system includes apparatus and methods for reaction of process gases exhausted from reaction furnaces with a reactant gas in a non-combustible manner to produce and contain particulate or powder byproducts, thereby removing the process gas from the exhaust gas flow. The apparatus provides process gas inlet, treatment reactive gas diffusion, process gas and treatment reactive gas pre-mixing, primary containment, secondary containment, and outlet zones.
Owner:MKS INSTR INC

Autonomous surface cleaning robot for wet and dry cleaning

An autonomous floor cleaning robot includes a transport drive and control system arranged for autonomous movement of the robot over a floor for performing cleaning operations. The robot chassis carries a first cleaning zone comprising cleaning elements arranged to suction loose particulates up from the cleaning surface and a second cleaning zone comprising cleaning elements arraigned to apply a cleaning fluid onto the surface and to thereafter collect the cleaning fluid up from the surface after it has been used to clean the surface. The robot chassis carries a supply of cleaning fluid and a waste container for storing waste materials collected up from the cleaning surface.
Owner:IROBOT CORP

Apparatus for use with hydrogen radicals and method of using same

A system and method suitable for removing both carbon-based contaminants and oxygen-based contaminants from a substrate within a single process chamber are disclosed.
Owner:ASM IP HLDG BV

Photobioreactor and process for biomass production and mitigation of pollutants in flue gases

Certain embodiments and aspects of the present invention relate to photobioreactor apparatus (100) designed to contain a liquid medium (108) comprising at least one species of photosynthetic organism therein, and to methods of using the photobioreactor apparatus (100) as part of a gas-treatment process and system able to at least partially remove certain undesirable pollutants from a gas stream (608). In certain embodiments, the disclosed photobioreactor apparatus (100 can be utilized as part of an integrated combustion method and system, wherein photosynthetic organisms utilized within the photobioreactor (100) at least partially remove certain pollutant compounds contained within combustion gases, e.g. CO2 and / or NOX, and are subsequently harvested from the photobioreactor (100), processed, and utilized as a fuel source for a combustion device (e.g. an electric power plant generator and / or incinerator).
Owner:GREENFUEL TECHNOLOGIES CORPORATION

Medical/surgical waste collection and disposal system including waste containers of different storage volumes with inter-container transfer valve and independently controlled vacuum levels

A waste collection and disposal system for use in health care facilities is provided. The system includes a mobile waste collection unit for moving between use areas in the health care facility to collect waste material generated during medical procedures including body fluids, body tissues, saline, etc. The waste collection unit includes stacked upper and lower waste containers for receiving the waste material. During use, the upper waste container can be emptied into the lower waste container for temporary storage. In addition, different vacuum levels can be provided in the waste containers during complex procedures. Once a user desires to empty the waste collection unit, the waste collection unit is wheeled to a docking station. At the docking station, the waste material is off-loaded to a waste drain and the waste collection unit is cleaned and rinsed for further use.
Owner:STRYKER CORP

Water vapor passivation of a wall facing a plasma

A chamber passivation method particularly useful for hydrogen plasma cleaning of low-k dielectrics prior to coating a barrier layer into a via hole with hydrogen radicals are provided from a remote plasma source. For each wafer, the chamber is passivated with water vapor (or other gas even more chemabsorbed on plasma facing walls) passed through the remote plasma source prior to the ignition of the hydrogen plasma. The water vapor is absorbed on walls, such as alumina and quartz parts of the remote plasma source, and forms a protective mono-layer that endures sufficiently long to protect the walls during the generation of the hydrogen plasma. Thereby, the plasma facing walls, particularly of a dielectric such as alumina, are protected from etching.
Owner:APPLIED MATERIALS INC

Desalination methods and systems that include carbonate compound precipitation

Desalination methods that include carbonate compound precipitation are provided. In certain embodiments, feed water is subjected to carbonate compound precipitation conditions prior to desalination. In certain embodiments, desalination waste brine is subjected to carbonate compound precipitation conditions. In yet other embodiments, both feed water and waste brine are subjected to carbonate compound precipitation conditions. Aspects of embodiments of the invention include carbone dioxide sequestration. Embodiments of the invention further employ a precipitate product of the carbonate compound precipitation conditions as a building material, e.g., a cement. Also provided are systems configured for use in methods of the invention.
Owner:ARELAC INC

Equipment and method for identifying, monitoring and evaluating equipment, environmental and physiological conditions

A system and method are disclosed for identifying monitoring and evaluating hazardous or potentially hazardous conditions. The system-may-be worn-by safety personnel to detect equipment conditions such as low power supply, environmental conditions such as ambient temperature and / or physiological conditions such as heart rate of a wearer. The system may further include a control unit having electronics operable to communicate signals associated with equipment, environmental and physiological conditions.
Owner:FIREEYE DEVMENT

Equipment and method for identifying, monitoring and evaluating equipment, environmental and physiological conditions

A system and method are disclosed for identifying monitoring and evaluating hazardous or potentially hazardous conditions. The system may be worn by safety personnel to detect equipment conditions such as low power supply, environmental conditions such as ambient temperature and / or physiological conditions such as heart rate of a wearer. The system may further include a control unit having electronics operable to communicate signals associated with equipment, environmental and physiological conditions.
Owner:MINE SAFETY APPLIANCES CO

Method of sequestering carbon dioxide while producing natural gas

A method of sequestering carbon dioxide and producing natural gas including: (a) injecting an injectant containing at least some amount of carbon dioxide into a zone containing natural gas hydrates; (b) releasing natural gas from the hydrates by allowing thermal transfer and pressure changes from the injectant to the hydrates; and (c) sequestering the carbon dioxide in the zone that previously contained the natural gas hydrates.
Owner:PIEKENBROCK EUGENE J

Hybrid catalyst system for exhaust emissions reduction

One aspect of the invention relates an exhaust treatment system having an SCR reactor following a NOx adsorber. Syn gas is used to regenerate the NOx adsorber. Another aspect relates to an LNT / SCR provided with an ammonia source separate from the LNT. A further aspect relates to a system comprising first and second LNTs and one or more SCRs downstream of the LNTs. A still further aspect relates to a device comprising first and second NOx adsorbers contained in a single housing. Another aspect relates to coating a surface of a moving part in an exhaust system with an oxidation catalyst to mitigate fouling. Additional aspects of the invention relate to strategies for controlling one or more of the time to initiate a regeneration cycle, the time to terminate a regeneration cycle, and the reductant injection rate during regeneration of LNT / SCR exhaust treatment systems.
Owner:INT ENGINE INTPROP CO LLC

Process for sequestering carbon dioxide and sulfur dioxide

A process for sequestering carbon dioxide, which includes reacting a silicate based material with an acid to form a suspension, and combining the suspension with carbon dioxide to create active carbonation of the silicate-based material, and thereafter producing a metal salt, silica and regenerating the acid in the liquid phase of the suspension.
Owner:PENN STATE RES FOUND

Process to produce biofuels from biomass

Biofuels can be produced by: (i) providing a biomass containing celluloses, hemicelluloses, lignin, nitrogen compounds and sulfur compounds; (ii) contacting the biomass with a digestive solvent to form a pretreated biomass containing carbohydrates; (iii) contacting the pretreated biomass with hydrogen in the presence of a supported hydrogenolysis catalyst containing (a) sulfur, (b) Mo or W, and (c) Co and / or Ni incorporated into a suitable support to form a plurality of oxygenated intermediates, and (vi) processing at least a portion of the oxygenated intermediates to form a liquid fuel.
Owner:SHELL OIL CO

REC credit distribution system and method

A method for promoting recycling from a fund established with revenue generated from the sale of environmental and / or power generation attributes by an entity producing renewable energy. The method comprises providing a point system by which a recycling consumer is credited for recycled materials collected. Further, the method provides for a reward system for redemption of points accumulated by the recycling consumer, the reward system including redeemable fund certificates drawn against the fund. The method further includes collecting recyclable materials from the recycling consumer and crediting an account in the name of the recycling consumer based on the quantity and / or quality of the recyclable material collected. Then the method provides for awarding fund certificates to the recycling consumer upon the accumulation of a sufficient point level.
Owner:CASELLA WASTE SYSTEMS

Method for recovery of CO2 from gas streams

A process for recovering CO2 from a feed gas stream comprises treating the feed gas stream with a regenerated absorbent comprising at least one tertiary amine absorbent having a pKa for the amino function of from about 6.5 to about 9 in the presence of an oxidation inhibitor to obtain a CO2 rich stream and subsequently treating the CO2 rich stream to obtain the regenerated absorbent and a CO2 rich product stream. The feed gas stream may also include SO2 and / or NOx.
Owner:CANSOLV TECH INC

Coal Compositions for Catalytic Gasification

Particulate compositions are described comprising an intimate mixture of a coal and a gasification catalyst. The particulate compositions are gasified in the presence of steam to yield a plurality of gases including methane and at least one or more of hydrogen, carbon monoxide, carbon dioxide, hydrogen sulfide, ammonia and other higher hydrocarbons. Processes are also provided for the preparation of the particulate compositions and converting the particulate composition into a plurality of gaseous products.
Owner:SURE CHAMPION INVESTMENT LTD

Algae biomass fractionation

A method of fractionating biomass, by permeability conditioning biomass suspended in a pH adjusted solution of at least one water-based polar solvent to form a conditioned biomass, intimately contacting the pH adjusted solution with at least one non-polar solvent, partitioning to obtain an non-polar solvent solution and a polar biomass solution, and recovering cell and cell derived products from the non-polar solvent solution and polar biomass solution. Products recovered from the above method. A method of operating a renewable and sustainable plant for growing and processing algae.
Owner:VALICOR

Process for reducing haze point in bright stock

A dewaxing process for lowering the haze point of a bright stock which includes contacting a bright stock in the presence of added hydrogen gas with a Zeolite EU-1 catalyst in combination with a ZSM-48 and / or SSZ-32 catalyst.
Owner:CHEVROU USA INC

Emissions treatment system with NSR and SCR catalysts

ActiveUS20050129601A1Small sizeReduce amount particulate matterGas treatmentNitrogen compoundsSorbentGasoline
Provided is an emissions treatment system for an exhaust stream, having a NOx storage reduction (NSR) catalyst with a NOx sorbent at a concentration of at least 0.1 g / in3 and a platinum group metal component dispersed on a refractory metal oxide support; and, an SCR catalyst disposed downstream of the NSR catalyst. The emissions treatment system is advantageously used for the treatment of exhaust streams from diesel engines and lean burn gasoline engines.
Owner:BASF CATALYSTS LLC

Water injection amount control system for fuel and water injection engine

A water injection amount control system for a fuel and water injection engine, comprises running state detecting unit for detecting the running state of the engine; an EGR system for recirculating part of exhaust gas of the engine to a combustion chamber of the engine; EGR system operating state detecting unit for detecting or estimating the operating state of the EGR system; water injection amount regulating unit for regulating an amount of water to be injected to the combustion chamber of the engine; and control unit for controlling the operation of the water injection amount regulating unit: wherein the system is arranged to have water injection amount setting unit for deciding a water injection amount based on information from the running state detecting unit and on the operating state of the EGR system detected by the EGR system operating state detecting unit, so that the control unit controls the operation of the water injection amount regulating unit based on the water injection amount decided by the water injection amount setting unit.
Owner:MITSUBISHI FUSO TRUCK AND BUS CORPORATION

Alkaline detergent containing mixed organic and inorganic sequestrants resulting in improved soil removal

Solid block alkaline detergent compositions are disclosed comprising a source of alkalinity, and other detergent additives including sequestrants. The solid block detergents of the invention used a mixed inorganic and organic sequestrant composition that successfully softens service water used in manufacturing aqueous detergents from the composition, but also obtains substantially improved organic soil removal on dishware or flatware. The solid block detergents of the invention comprise large masses of the chemical ingredients having a weight of greater than about 500 grams in a solid block product format that is typically dispensed using a spray on water dispenser that creates an aqueous concentrate that is used in a washing machine.
Owner:ECOLAB USA INC

Low Temperature Gasification Facility with a Horizontally Oriented Gasifier

A low-temperature gasification system comprising a horizontally oriented gasifier is provided that optimizes the extraction of gaseous molecules from carbonaceous feedstock while minimizing waste heat. The system comprises a plurality of integrated subsystems that work together to convert municipal solid waste (MSW) into electricity. The subsystems comprised by the low-temperature gasification system are: a Municipal Solid Waste Handling System; a Plastics Handling System; a Horizontally Oriented Gasifier with Lateral Transfer Units System; a Gas Reformulating System; a Heat Recycling System; a Gas Conditioning System; a Residue Conditioning System; a Gas Homogenization System and a Control System.
Owner:PLASCO CONVERSION TECH INC
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