liquid biogas Articles

  • Electric Utilities Hook up To Biogas

    Pennsylvania Power & Light, Alliant Energy, Wisconsin Electric and Portland General Electric are some utilities that are plugging into anaerobic digestion projects. AT the October, 2001 BioCycle conference on “Renewable Energy from Organics Recycling,” the director of the Iowa Energy Center, Floyd Barwig, pointed out that the possibility of separating the United States from Middle ...


  • Algae biomass cultivation in nitrogen rich biogas digestate

    Because microalgae are known for quick biomass growth and nutrient uptake, there has been much interest in their use in research on wastewater treatment methods. While many studies have concentrated on the algal treatment of wastewaters with low to medium ammonium concentrations, there are several liquid waste streams with high ammonium concentrations that microalgae could potentially treat. ...


    By IWA Publishing

  • Evaluation of biotreatability of ionic liquids in aerobic and anaerobic conditions

    The aim of our study was to set up an approach for reliable biotreatability assessment of ionic liquids (ILs). As a case study, two different ILs were selected: pyridinium-based 1-butyl-3-methylpyridinium dicyanamide ([bmpyr][dca]) and imidazolium-based 1-butyl-3-methylimidazole tetrafluoroborate ([bmim][BF4]). Toxicity in aerobic conditions was determined by measurement of inhibition of oxygen ...


    By IWA Publishing

  • Pumps with extended service life for generating biogas from organic waste

    When regular commercial pumps are used to process organic waste, they typically wear out after only a short period of time. Liquids pumped under these conditions attack pumps from two different angles: first with highly abrasive additives and second with liquids that have highly fluctuating pH values and therefore a high level of chemical aggressiveness. These conditions are very tough on seals ...


    By ALLWEILER GmbH

  • Green Light for Recycling – Biogas has an exciting future - Case Study

    The tipping lorry of the container vehicle moves up. In minutes, its load of food residue is emptied and starts its course to energy recovery. "Energy for tomorrow" is the slogan of the Danpower Group for a reason. Danpower sees the biogas sector as a key growth factor for the future. Twenty five biogas plants are currently in operation, one of which is in Bad Köstritz/Thüringen. ...


    By HSM GmbH + Co. KG

  • Progressing cavity pumps for pumping chemically aggressive liquids during biodiesel production

    Progressing cavity pumps reflect an established design with decades of usage in many industries and applications. Pumps of this type embody highly mature technical designs. For many years, improvements and innovations have been at the margins. Examples of design improvements include the 2/3-screw geometry, which is more economical than the 1/2-screw geometry that had been used exclusively for ...


    By ALLWEILER GmbH

  • Experiences with anaerobic treatment of fat-containing food waste liquids: two full scale studies with a novel anaerobic flotation reactor

    Fat-containing food waste can be effectively treated in a new type of reactor, the so-called BIOPAQ-Anaerobic Flotation Reactor or BIOPAQ® anaerobic flotation reactor (AFR). In the reactor a flotation unit is integrated to retain the sludge. In this study results from two plants with a 430 and 511 m3-AFR, respectively, are presented. In one reactor, which is fed with water ...


    By IWA Publishing

  • Recovering biomethane and nutrients from anaerobic digestion of water hyacinth (Eichhornia crassipes) and its co-digestion with fruit and vegetable waste

    The potential to recover bioenergy from anaerobic digestion of water hyacinth (WH) and from its co-digestion with fruit and vegetable waste (FVW) was investigated. Initially, biogas and methane production were studied using the biochemical methane potential (BMP) test at 2 g volatile solids (VS) L−1 of substrate concentration, both in the digestion of WH alone and in its co-digestion with FVW ...


    By IWA Publishing

  • GTI helps keep Kamloops beautiful - case study

    The City of Kamloops is located in the interior of British Columbia, Canada’s westernmost province. As part of Kamloops’ Liquid Waste Management Plan, the city was seeking opportunities to use its wastewater as a resource, rather than treat it solely as waste. One method was to capture methane gas (biogas) produced from the anaerobic treatment of wastewater and use it to generate ...

  • Post-composting techniques of digested household waste

    Compost making is a method of recycling whereby organic waste is broken down to organic soil with the help of oxygen demanding microorganisms. There are different ways of making compost. Some require more labour and an exact procedure has to be followed; others neglect the precise procedure, which has advantages and disadvantages. Organic material, including toilet waste, can also be recovered to ...


    By Inderscience Publishers

  • Micro-aeration for sulfide removal in anaerobic treatment of high-solid wastewater: a pilot-scale study

    The presence of sulfur compounds (e.g. protein, sulfate, thiosulfate, sulfite, etc.) in the feed stream generates highly corrosive and odorous hydrogen sulfide during anaerobic digestion. The high sulfide level in the biogas stream is not only poisonous to many novel metal catalysts employed in thermo-catalytic processes; but also reduces the quality of methane as a renewable energy. This study ...

  • From fermentation residues to nutrient concentrate

    Treatment of fermentation residue substrates from biogas plants by means of ceramic membranes The growing number of biogas plants makes it increasingly difficult to return the fermentation residue substrates to green spaces or arable land. Especially large-scale plants are often unable to find sufficient disposal possibilities in acceptable distances. Therefore it is sensible to treat ...


    By atech innovations gmbh

  • Production of methane gas from organic fraction municipal solid waste (OFMSW) via anaerobic process: application methodology for the Malaysian condition

    Solid waste management in Malaysia is confronted with many problems, including low collection coverage, irregular collection services, inadequate equipment used for waste collection, crude open dumping and burning without air and water pollution control systems, inadequate legal provisions and resource constraints. These problems have various effects on the development of the solid waste ...


    By Inderscience Publishers

  • The performance of a modified Anaerobic Baffled Reactor (ABR) treating high strength synthetic wastewater

    In the present study the overall performance of a modified Anaerobic Baffled Reactor (ABR) treating high strength synthetic wastewater was first described. The reactor differs from the original ABR as follow: a modified internal lamella separator was positioned at top of each up-flow sections to separate the biogas and liquid to reduce the sludge wash out. The initial organic loading rate was ...


    By Inderscience Publishers

  • Turning waste into power

    Economic, social and environmental factors dictate the necessity to manage waste to a new level. Wastewater plants, landfills, farms and food plants are all the owners of biomass that can be digested to produce biogas and turned into power. Biogas can be burned directly in boilers for heat recovery and used for manufacturing, heating or cooling; this is the simplest method of direct biogas ...


    By Hurll Nu-Way

  • Digester gas - case study

    BV Dairy, of Dorset, is aiming to cut its carbon footprint by more than 65% as a pioneer of liquid Anaerobic Digestion (AD) technology BV Dairy, Shaftsbury, Dorset Established in 1958, BV Dairy processes around 35 million litres of milk per year, sourced from 35 farms located near its site. The product range includes fresh and cultured dairy products for sale to the UK’s ...


    By ENER-G

  • Advantages of anaerobic digestion of sludge in microaerobic conditions

    The paper reviews results and experience of microaerobic experiments at both high and low sulphide concentrations and evaluates advantages and drawbacks of the anaerobic digestion of sludge in microaerobic conditions as regards biogas quality, digested sludge quality, organic pollutants biodegradability and methanogenic activity of biomass. The innovative microaerobic modification of the ...


    By IWA Publishing

  • Digester gas - countess wear sewage treatment works - case study

    South West Water leads the way with highly efficient biogas combined heat and power Technology, utilising otherwise harmful digester gas. South West Water (SWW) provides clean water and sewerage services to over 1.6 million people, 365 days a year. Dedicated to environment and conservation issues, SWW is committed to using energy efficient Combined Heat and Power (CHP) generation systems. SWW has ...


    By ENER-G

  • GTI Supplies Innovative Cover for Waste-to-Energy Digester

    The Customer: LaForge Bioenvironmental operates a waste-to-energy facility in a northwest farming community of New Brunswick, Canada. The system is located on a 1,000 acre (405 hectare) mixed farming operation, which includes the LaForge Holsteins dairy. LaForge planned to expand its 500kW combined heat and power (CHP) system to more than double the capacity by converting an existing holding ...


    By Geomembrane Technologies

  • From fermentation residues to nutrient concentrate

    The growing number of bio-gas plants makes it in-creasingly difficult to return the fermentation residue substrates to green spaces or arable land. Especially large-scale plants are often unable to find sufficient disposal possibilities in acceptable distances. Therefore it is sensible to treat fermentation residue substrates by suitable screening processes in such a way that they can be ...


    By atech innovations gmbh

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