Co-composting solid biowastes with alkaline materials to enhance carbon stabilization and revegetation potential

Chowdhury, Saikat; Bolan, Nanthi S.; Seshadri, Balaji; Kunhikrishnan, Anitha; Wijesekara, Hasintha; Xu, Yilu; Yang, Jianjun; Kim, Geon-Ha; Sparks, Donald; Rumpel, Cornelia

Title: Co-composting solid biowastes with alkaline materials to enhance carbon stabilization and revegetation potential
Creator: Chowdhury, Saikat; Bolan, Nanthi S.; Seshadri, Balaji; Kunhikrishnan, Anitha; Wijesekara, Hasintha; Xu, Yilu; Yang, Jianjun; Kim, Geon-Ha; Sparks, Donald; Rumpel, Cornelia
Relation: ARC.DP140100323
Relation: Environmental Science and Pollution Research Vol. 23, Issue 8, p. 7099-7110
Publisher Link: http://dx.doi.org/10.1007/s11356-015-5411-9
Publisher: Springer
Resource Type: journal article
Date: 2016
Description: Co-composting biowastes such as manures and biosolids can be used to stabilize carbon (C) without impacting the quality of these biowastes. This study investigated the effect of co-composting biowastes with alkaline materials on C stabilization and monitored the fertilization and revegetation values of these co-composts. The stabilization of C in biowastes (poultry manure and biosolids) was examined by their composting in the presence of various alkaline amendments (lime, fluidized bed boiler ash, flue gas desulphurization gypsum, and red mud) for 6 months in a controlled environment. The effects of co-composting on the biowastes' properties were assessed for different physical C fractions, microbial biomass C, priming effect, potentially mineralizable nitrogen, bioavailable phosphorus, and revegetation of an urban landfill soil. Co-composting biowastes with alkaline materials increased C stabilization, attributed to interaction with alkaline materials, thereby protecting it from microbial decomposition. The co-composted biowastes also increased the fertility of the landfill soil, thereby enhancing its revegetation potential. Stabilization of biowastes using alkaline materials through co-composting maintains their fertilization value in terms of improving plant growth. The co-composted biowastes also contribute to long-term soil C sequestration and reduction of bioavailability of heavy metals.
Subject: biowastes; co-composting; alkaline materials; carbon stabilization; decomposition; landfill; revegetation
Identifier: http://hdl.handle.net/1959.13/1319944
Identifier: uon:24017
Identifier: ISSN:0944-1344
Language: eng
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