biowaste Articles

  • Co-fermentation of sewage sludge and biowastes

    The anaerobic treatment of sewage sludge has a long history in Germany. It began early in the Twentieth Century with the development of the Imhoff tank and has, since then, been con-tinuously further developed. Today, anaerobic sludge digestion is the most widely used process for stabilizing sewage sludges. Digesters, in which a portion of the sewage sludge is converted into utilizable biogas ...


    By ORBIT e.V.

  • Biowaste collection in residential areas with dense population

    Because of legal regulations in Germany the biological treatment of organic residues is becoming more and more important. Following the regulations of the Waste Avoidance, Recycling and Disposal Act (KrW-/AbfG) and the TASi (Technical Data Sheet of Urban Wastes) biowaste has to be collected and treated separately. The waste management objective of the separate collection and biological treatment ...


    By ORBIT e.V.

  • Separating micropollutants from biowastes using anaerobic treatment facilities

    Recycling of municipal organic wastes from separate collection systems becomes more and more important in the Federal Republic of Germany. Experiences gathered during the last few years indicate that the recovery potential of waste and biosolids strongly depends on quality of the produced composts or their pollutant load. This means that only really low polluted composts will be competitive in ...


    By ORBIT e.V.

  • International applications of the Cambi thermal hydrolysis for sludge and biowaste treatment

    ABSTRACT The sludge disposal in Europe is affected by international trends and legislation as well as national and local situations. Some important trends are: Safe utilization of nutrients Safe utilization of energy Disinfection especially by requiring heat treatment Restrictions and increased costs towards landfill and incineration ...


    By Cambi Group AS

  • The biowaste-programme of the german environ-mental foundation - Results, conclusion and perspectives

    The biowaste programme of the German Environmental Foundation was started in 1995. Since its beginning 55 projects were supported with more than 32 Mio DM (ca. 16 Mio EURO) focussing the following sectors: i) development and application of new compost-based products; ii) reduction of pollutants and higher effective pre-sorting of extraneous materials; iii) innovative technologies of biowaste ...


    By ORBIT e.V.

  • Comparative evaluation of conventional and microwave hydrothermal carbonization of human biowaste for value recovery

    This paper compares conventional and microwave hydrothermal carbonization (HTC) of human biowaste (HBW) at 160 °C, 180 °C and 200 °C as a potential technology to recover valuable carbonaceous solid fuel char and organic-rich liquor. Also discussed are the influence of HTC heating methods and temperature on HBW processing conversion into solid fuel char, i.e. yield and post-HTC management, ...


    By IWA Publishing

  • Adsorption of nickel from aqueous solutions using low cost biowaste adsorbents

    This work has been carried out to check the ability of three biowastes, viz. corn cob ash (CCA), mango stone ash (MSA) and orange peel powder (OPP), to remove Ni(II) ions from aqueous solution. The surface environment of the adsorbents was characterized by Fourier transformation infrared spectroscopy and scanning electron microscopy (SEM) analysis which showed that these adsorbents contain ...


    By IWA Publishing

  • Source separation trends in the UK

    THE past 15 years have seen significant investment and development of the biowaste collection and treatment industry in the United Kingdom (UK), which has gone from virtually zero to an industry worth over £160 million (264.6 million USD). Driving this investment have been a number of regulatory and fiscal measures such as the first set of Landfill Directive targets due in 2010. Since 1999, the ...


    By BioCycle Magazine

  • Two-phase thermophilic anaerobic digestion process for biohythane production treating biowaste: preliminary results

    This paper deals with the optimization of a two-phase anaerobic process treating biowaste for hydrogen and methane production. Neither physical nor chemical pre-treatments were used to optimize the process. The work was carried out at pilot scale, using two CSTRs (200 and 380 L working volume respectively) both maintained at thermophilic temperature (55 °C) and fed semi-continuously with ...


    By IWA Publishing

  • Waste management regulations

    In recent years, utilisation of biowastes (especially biowaste composts) has gained greater significance in the Federal Republic of Germany. Whereas less than 1 million tonnes of biowaste was source separated and utilised in 1990, more than 6 million tonnes of biowaste are currently used as fertilisers after composting or digestion. Since composting of source separated biowaste has gained a ...


    By ORBIT e.V.

  • Use of external carbon sources derived from biowaste for short-cut nutrient removal from anaerobic effluents

    This work evaluated the use of different external carbon sources to promote the via-nitrite nutrient removal from anaerobic effluents. The carbon sources consisted of fermentation liquid produced from the organic fraction of municipal solid waste (OFMSW FL), drainage liquid produced from OFMSW, fermentation liquid produced from vegetable and fruit waste (VFW FL) and acetic acid. Denitritation ...


    By IWA Publishing

  • Characterization of different decomposition stages of biowaste using FT-IR spectroscopy and pyrolysis-field ionization mass spectrometry

    The decomposition stage and stabilization of organic matter in biowaste (mixture of yard waste and kitchen waste), originating from an open windrow process, were investigated using Fourier transform infrared (FT-IR) spectroscopy and pyrolysis-field ionization mass spectrometry (Py-FIMS). These investigations provided detailed information about chemical constituents and their behavior during the ...


    By Springer

  • Remscheid pilot project: evaluation of a large scale trial of utilizing biodegradable waste bags for biowaste collection and treatment

    Separate collection of organic waste may be considered as an integral part of contemporary waste management schemes. In this function it became widely accepted in the last ten years. It pursues the idea of a recycling economy according to the European hierarchy of waste - prevent, reduce, recycle - and is aimed at closing nutrient cycles. Nevertheless, separate collection at source essentially ...


    By ORBIT e.V.

  • Effects of the anaerobic biowaste treatment processes Management on the digestate quality (residues from Digestion/compost, process water/wastewater)

    Regarding the municipally-collected biowaste amount in Germany, a quantity of 90 - 100 kg/ per annum per citizen is registered (Gallenkemper and Doedens, 1994). That results in an annual biowaste amount of 6.3 to 7 million tons in the Federal Republic of Germany (FRG), whereby also sewage sludges and biogenic, industrial wastes are added. According to Hochrein (1994) about 3 million tons of ...


    By ORBIT e.V.

  • Determination of sand content in digestate

    The biological treatment of separate collected waste becomes more and more important. The composting is still the dominant method of treating this waste, but the anaerobic alternative, the anaerobic digestion, plays an increasing part. In Germany already 15% of the whole capacity of biological treatment plants for separate collected biowaste are of anaerobic digestion (Kern, 1998), because of its ...


    By ORBIT e.V.

  • 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.

  • Site-specific economic and ecological analysis of enhanced production, upgrade and feed-in of biomethane from organic wastes

    The present study analyses the cost structure and ecological performance of biomethane production and feed-in from organic wastes and manure in a site-specific approach for Upper Austria. The theoretically available quantities of biowaste and manure can feed representative biogas plant capacities resulting in relatively high biomethane full costs in the natural gas grid of at least 9.0 ...


    By IWA Publishing

  • Integrated environmental biotechnology-oriented framework for solid waste management and control in Nigeria

    Several environmental problems arising from man's activity have to be solved in a cost-effective and an environmentally friendly approach. In this paper, a framework for an integrated management and control of solid waste in the south-east zone of Nigeria is presented. The major activities include collection and transportation of solid waste to designated areas, separation of reusable components ...


    By Inderscience Publishers

  • Environmental evaluation of systems for the recovery of biogenic wastes

    The recovery of waste materials is promoted by the German Waste Act 'Kreislaufwirtschafts- und Abfallgesetz'. It requires that among the recovery routes available for a specific waste category the priority has to be on those which are more environmentally compatible. As a restriction given by the law, only those recovery routes which are technically feasible and economically reasonable must be ...


    By ORBIT e.V.

  • Removal of methylene blue dye from water by a spent bleaching earth biosorbent

    This work is about the valorization of spent bleaching earth (SBE) at low cost from the AFIA oil refinery in Algeria's western region. The biowaste has been burned to eliminate the oil traces, then it has been valorized in two ways: (i) chemically, using phosphoric acid to obtain SBEC and (ii) thermally at 750 °C to create SBEH. The obtained materials were used for the first time as ...


    By IWA Publishing

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