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Author Randolph, P.
Author Bansode, R.R.
Author Hassan, O.A.
Author Rehrah, Dj.
Author Ravella, R.
Author Reddy, M.R.
Author Watts, D.W.
Author Novak, J.M.
Author Ahmedna, M.
Available date 2017-02-22T08:57:59Z
Publication Date 2017-05-01
Publication Name Journal of Environmental Managementen_US
Identifier http://dx.doi.org/10.1016/j.jenvman.2017.01.061en_US
Citation Randolph P, Bansode RR, Hassan OA, Rehrah D, Ravella R, Reddy MR, Watts DW, Novak JM, Ahmedna M.” Effect of biochars produced from solid organic municipal waste on soil quality parameters”, Volume 192, pp. 271-280en_US
ISSN 03014797
URI http://www.sciencedirect.com/science/article/pii/S0301479717300798
URI http://hdl.handle.net/10576/5294
Abstract Abstract New value-added uses for solid municipal waste are needed for environmental and economic sustainability. Fortunately, value-added biochars can be produced from mixed solid waste, thereby addressing solid waste management issues, and enabling long-term carbon sequestration. We hypothesize that soil deficiencies can be remedied by the application of municipal waste-based biochars. Select municipal organic wastes (newspaper, cardboard, woodchips and landscaping residues) individually or in a 25% blend of all four waste streams were used as feedstocks of biochars. Three sets of pyrolysis temperatures (350, 500, and 750 °C) and 3 sets of pyrolysis residence time (2, 4 and 6 h) were used for biochar preparation.The biochar yield was in the range of 21–62% across all feedstocks and pyrolysis conditions. We observed variations in key biochar properties such as pH, electrical conductivity, bulk density and surface area depending on the feedstocks and production conditions. Biochar increased soil pH and improved its electrical conductivity, aggregate stability, water retention and micronutrient contents. Similarly, leachate from the soil amended with biochar showed increased pH and electrical conductivity. Some elements such as Ca and Mg decreased while NO3-N increased in the leachates of soils incubated with biochars. Overall, solid waste-based biochar produced significant improvements to soil fertility parameters indicating that solid municipal wastes hold promising potential as feedstocks for manufacturing value-added biochars with varied physicochemical characteristics, allowing them to not only serve the needs for solid waste management and greenhouse gas mitigation, but also as a resource for improving the quality of depleted soils.en_US
Sponsor Qatar National Research Funden_US
Language enen_US
Publisher Elsevieren_US
Subject Biocharen_US
Subject Soil amendmenten_US
Subject Carbon sequestrationen_US
Subject Environmenten_US
Subject Sustainabilityen_US
Title Effect of biochars produced from solid organic municipal waste on soil quality parametersen_US
Type Articleen_US
Pagination 271-280
Volume Number 192


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