wastewater bioenergy Articles

  • Using wastewater and high-rate algal ponds for nutrient removal and the production of bioenergy and biofuels

    This paper projects a positive outcome for large-scale algal biofuel and energy production when wastewater treatment is the primary goal. Such a view arises partly from a recent change in emphasis in wastewater treatment technology, from simply oxidising the organic matter in the waste (i.e. removing the biological oxygen demand) to removing the nutrients – specifically nitrogen and ...


    By IWA Publishing

  • Anaerobic digestion of post-hydrothermal liquefaction wastewater for improved energy efficiency of hydrothermal bioenergy processes

    Hydrothermal liquefaction (HTL) is a promising process for converting wet biomass and organic wastes into bio-crude oil. It also produces an aqueous product referred to as post-hydrothermal liquefaction wastewater (PHWW) containing up to 40% of the original feedstock carbon, which reduces the overall energy efficiency of the HTL process. This study investigated the feasibility of using ...


    By IWA Publishing

  • Microalgae growth for nutrient recovery from sludge liquor and production of renewable bioenergy

    Proof-of-concept has been demonstrated for a process that will utilize nutrients from sludge liquor, natural light, and CO2 from biogas to grow microalgae at wastewater treatment plants. This process will reduce the impact of returning side-streams to the head of the plant. The produced algae will be fed to anaerobic digesters for increased biogas production. Dewatering of anaerobically digested ...


    By IWA Publishing

  • Dairy shed wastewater treatment and modelling by anaerobic digestion technology

    There is a growing interest in the application of Anaerobic Digestion (AD) technology to Australian dairy farms not only for the reduction of environmental pollution caused by the effluents but also for recovering bioenergy. To be able to design and operate efficient AD systems, appropriate mathematical models need to be developed to observe and analyse the anaerobic process dynamics, such as the ...


    By Inderscience Publishers

  • Anaerobic co-digestion of surplus yeast and wastewater to increase energy recovery in breweries

    Surplus yeast is a residue produced during brewery process, which presents high contents of organic matter. Biogas production from yeast could significantly contribute to bioenergy production in breweries, via biogas generation. Co-digestion of surplus yeast and brewery wastewater in a single treatment step would simplify the technical and economical requirements for the transformation of both ...


    By IWA Publishing

  • A combined UASB-MBR with shortcut nitrification-denitrification for energy reduction in wastewater reclamation

    Shortcut nitrification has been successfully applied in a laboratory scale nitrification-denitrification process consisting of an up-flow anaerobic sludge blanket (UASB) and an aerobic membrane bioreactor (MBR) in treating synthetic and municipal wastewater to simultaneously remove organic carbon and nitrogen. For the treatment of synthetic wastewater, the combined system exhibited a high TOC ...


    By IWA Publishing

  • Influence of light intensity on hydrogen production by Rhodobacter sphaeroides from swine manure wastewater

    In this paper, the effects of light intensity on the hydrogen production of Rhodobacter sphaeroides 1.1737 using swine manure wastewater as substrate were investigated. The results show that the increase in light intensity increases both hydrogen production rate and total hydrogen evolved by Rhodobacter sphaeroides, and the activity of Rhodobacter sphaeroides is getting stronger. The rate of ...


    By Inderscience Publishers

  • Kings lynn anglian water case study

    Plant inputs : 20.000 Tonnes dry solids/annum Wastewater sludge Primary sludge 40% Secondary sludge 60% Advanced Digestion plant : Monsal EEH high rate hydrolysis Hybrid heating technology • water and steam 2 x 5,650m3 Mesophilic digesters Biogas and Bioenergy engineering : Over 390m3 biogas/tonne DS treated 2 MWe CHP installed Heat recovery, steam ...


  • Great billing anglian water case study

    Plant inputs : 40.000 Tonnes dry solids/annum Wastewater sludge 12.000 TDS Indigenous, 28,000 TDS cake imports Primary sludge 60% Secondary sludge 40% Advanced Digestion Plant : Monsal EEH • High rate hydrolysis  Cake back mixing • 7-8% DS teed plant Heating technology • water and steam 4 x 3,030m3 + 1 x 4,925m3 Mesophilic digesters (17,045m3 ...


  • Development of algae–based technology to mitigate energy crisis in coal mining areas: a critical review

    Algal biofuels around the world represent a sustainable pathway to meet increasing demand for fuel and clean energy with reduced environmental impact. More than half of that mass consists of lipids or triacylglycerides which are also found in vegetable oils and are used to produce such advanced biofuels as biodiesel, green diesel, green gasoline and green jet fuel. Algal remediation technology ...


    By Inderscience Publishers

  • Reducing the Economic Friction of Regulation

    Last month, we looked at two distinctly different bioenergy business models that are merging. Energy profit centers and waste cost-recovery facilities are learning the benefits of each other's business model. The resulting projects generate maximum revenue with lower production costs. The same kind of business model duality occurs in biomass energy regulation. There are more than two kinds of ...


    By BioCycle Magazine

  • Masdar Institutes integrated innovation in water and energy

    Masdar City, in Abu Dhabi, United Arab Emirates, is a ‘living laboratory’, in the words of Professor Taha Ouarda. ‘It is a pioneering experiment whose lessons and results need to be used to duplicate the experiment in other places,’ he adds. This need is due to the focus of the experiment. ‘The elements most important in this region are water and energy,’ notes ...


    By Aquatech Global Events

  • Kickoff for Biogas - South America Opts for Green Energy Made by WELTEC

    Currently, the world is locked on to the FIFA World Cup in Brazil. Though they have already reached a high technical level as far as football is concerned, the South American countries still have development potential in the fields of biogas technology and renewable energies. In the interview, Aguinaldo Ramalho of the German biogas plant manufacturer WELTEC BIOPOWER talks about the potential, ...


    By WELtec BioPower GmbH

  • 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

  • Denmark’s Near-Zero-Waste Wonder

    Has this Danish community found the formula for environmentally friendly industry? When we look closely at systems in nature — coral reefs or rainforests, for instance — we see something we don’t often see in human systems: mutually beneficial relationships and energy flows among the various elements, such as air, water, rocks, soil, and plant and animal life. If we ...


    By Ensia

  • National brewery benefits from biogas

    Anheuser-Busch has installed anaerobic digestion systems at 10 of its 12 large breweries in the U.S., with an 11th system in design. Primary drivers are cost-avoidance for wastewater treatment fees and fossil fuel purchases. ANHEUSER-BUSCH, owner of 12 large breweries in the U.S., has committed to reduce its greenhouse gas emissions 5 percent from 2005 levels by 2010. The company is well ...


    By BioCycle Magazine

  • Renewable energy marketplace

    ALLU Group markets two types of equipment for use in biomass energy operations. The ALLU Screener Crusher bucket attaches to a front-end loader. The bucket is designed to aerate, crush, screen and mix at one time. The Screener Crusher has a rigid steel frame, onto which horizontally rotating screening and crushing drums are mounted. All the drums rotate in the same direction. There are several ...


    By BioCycle Magazine

  • Digester Developers Target Mixed Organic Waste Streams

     emerging group of commercial companies see a viable business opportunity in North America around building, owning and operating larger scale anaerobic digestion (AD) facilities to process mixed organic waste streams. In some instances, the projects being proposed and constructed only include anaerobic digester operations. In others, there is a combination of digestion with back-end ...


    By BioCycle Magazine

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