organic waste separation Articles

  • Separation

    Introduction: Ex situ separation can be performed by many processes. Gravity separation and sieving/physical separation are two well-developed processes that have long been primary methods for treating municipal wastewaters. Magnetic separation, on the other hand, is a much newer separation process that is still being tested. Gravity Separation Gravity ...

  • Environmental efficiency of composting versus anaerobic digestion of separately collected, organic waste

    Environmental policy in the Netherlands among others aims at closing material cycles and minimising the amount of waste requiring final disposal. In this policy the highest priority is given to the prevention of waste production followed by (in descending order of preference) reuse, incineration with energy recovery and sanitary landfilling. In the implementation of this solid waste policy also ...


    By ORBIT e.V.

  • A Comparison Between Systems for Source Separation of Organic Household Waste

    Conventional collection of source separated waste using separate containers was com-pared to collection in bags with different colours and optical sorting (OptiBag). Purity was found to be high, especially in the OptiBag system. However the conventional system had new instructions for sorting, which may have influenced the result. Sources for heavy metals are identified as waste metal fraction, ...


  • Anaerobic fermentation of organic solid wastes: volatile fatty acid production and separation

    Anaerobic fermentation of organic municipal solid waste was investigated using a leach-bed reactor (LBR) to assess the volatile fatty acid (VFA) production efficiency. The leachate recycle rate in the LBR affected the VFA composition of the leachate. A six-fold increase in the recycle rate resulted in an increase of the acetic acid fraction of leachate from 24.7 to 43.0%. The separation ...


    By IWA Publishing

  • Residential source separated organics collection strategies

    For many municipal jurisdictions across Canada and the U.S. seeking to maximize the diversion of residential solid waste from landfill, food residue offers the next level of “low hanging fruit” in the spectrum of residential waste, offering an incremental diversion through source separation organics (SSO). When designed and implemented correctly, the incremental diversion may top 20 ...


    By Waste Advantage Magazine

  • Treating organic waste with Cambi THP

    ABSTRACT This paper describes how the Cambi Thermal Hydrolysis Process (THP) treats biodegradable organic waste and converts it to renewable energy and pathogen-free and bio-fertilizer. The interest for the process is expected to increase due to new environmental legislation as well as increasing demand for renewable energy. The implementation of the European Landfill Directive 1999/31EC and the ...


    By Cambi Group AS

  • Electrokinetic Separation

    Introduction The principle of electrokinetic remediation relies upon application of a low-intensity direct current through the soil between ceramic electrodes that are divided into a cathode array and an anode array. This mobilizes charged species, causing ions and water to move toward the electrodes. Metal ions, ammonium ions, and positively charged organic compounds move toward the cathode. ...

  • The Power to Separate

    Gravity separators are effective and economical tools used to process wastewater and stormwater by removing pollutants such as sediment, hydrocarbons and debris through the process of sedimentation or flotation. Most separators have few or no moving parts, are easy to maintain and have a successful history of use in many different industrial, commercial and residential applications. Specifying ...


    By BaySaver Technologies, Inc.

  • Environmental analysis of management systems for organic waste

    Organic waste is generally easily degradable and has a high nutrient content. Thus the risk is large that the handling of such material will generate emissions that affect the environment. New systems have been introduced for managing organic waste fractions from households and industries. These systems are based on source separation and biological treatment, e.g. composting and anaerobic ...


    By ORBIT e.V.

  • Fresh look at organics bans and waste recycling laws

    Approximately 40 percent of food produced in the U.S. is wasted annually. At a time when millions of Americans are food insecure and thousands of farmers struggle to stay afloat, the negative consequences of wasting food extend far beyond the environmental impacts and loss of resources that could have been otherwise allocated. There are great opportunities for food waste reduction at the federal ...


    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

  • Organic waste in circulation -co-operation between university, practice and society in Sweden

    A challenge for the future is to improve recirculation of organic waste, including its contents of nutrients, between urban and agricultural ecosystems. The main reason for developing recirculating systems is to conserve energy and nutrients. The aim is to enable production of high quality and quantity food and feed on a long-term basis, to develop safe and economically feasible systems, to ...


    By ORBIT e.V.

  • Expanding organics collection

    THE Region of Niagara, located in southern Ontario between Lake Ontario and Lake Erie, has relaunched its curbside source separated organics diversion program for single and multifamily dwellings. The Region, which has an objective of 65 percent waste diversion from landfill by 2012, serves over 400,000 residents throughout 12 municipalities. Free 13-gallon green bins were provided to households ...


    By BioCycle Magazine

  • Oil Water Separation

    An industrial facility imports oily wastes and separated them using a thermal process. The process raises the oil water temperature to 180 degrees F and uses insulated tanks to obtain an oil/water split. The facility had a 3-day workweek processing 100-200K gallons/day and then maintenance of the equipment the rest of the workweek and often weekend(s). The majority of the work was keeping the ...


    By Integrated Engineers Inc.

  • Perspectives on organic waste recovery relative to composting and anaerobic digestion

    Generally speaking, organic waste renders its self suitable for recovery purposes owing to the nutrient elements it contains and the energy stored in the biochemical bonds of its constituent organic compounds. Both composting and anaerobic digestion (AD) have been used since a long time ago in reclaiming organic material. It seems that the first modern composting process was developed in 1920s in ...


    By ORBIT e.V.

  • Residential Organics Collection Options

    Untitled Document A suburb in Minnesota's Twin ...


    By BioCycle Magazine

  • Plastics Separation in Compost

    Untitled Document Operators say their number one contamination problem is plastic - small, large and in-between - in the compost ...


    By BioCycle Magazine

  • Plastics Separation In Compost

    Operators say their number one contamination problem is plastic small, large and in-between - in the compost feedstock and thus in the end product. New study and equipment offer some excellent solutions. An air separation unit from Hawker Corp. is attached to the outfeed conveyor of a screen. Plastic is collected in a tube sock (inset) attached to the fan assembly. PRESSURE in Europe to increase ...

  • The dangers of separating science and environment

    We need to figure out a better way to communicate science that balances technology and nature. Does the natural world have any relevance to modern science? Of course it does; but sometimes it seems like that’s not the case. This is a myth perpetuated directly and indirectly through media, policy decisions, academic disciplines, even some science engagement initiatives: ...


    By Ensia

  • Rest or mixed waste sorting-digestion-separation for the recovery of recyclables and energy

    Source separate collection of biowaste has been implemented in many countries in Europe, especially in the German- speaking countries and the Benelux. By separating the biowaste fraction, a waste fraction called rest waste or grey waste is left over. This fraction is in most instances landfilled or incinerated. However, rest waste still contains a considerable amount of organics (up to 65%) which ...


    By ORBIT e.V.

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