Effect of biochar amendment on compost quality, gaseous emissions and pathogen reduction during in-vessel composting of chicken manure

Woo Jin Chung, Soon Woong Chang, Dhiraj Kumar Chaudhary, Joung Du Shin, Hyunook Kim, Natchimuthu Karmegam, Muthusamy Govarthanan, Murugesan Chandrasekaran, Balasubramani Ravindran

Research output: Contribution to journalArticlepeer-review

75 Scopus citations

Abstract

Because of rapid development in the livestock industry, the production of chicken manure has subsequently increased, which may contribute to environmental pollution. In this regard, in-vessel composting of biochar amended chicken manure and sawdust mixtures was investigated to find out the effect of biochar at the ratios of 0% (control), 3% (T1), 5% (T2), and 10% (T3) on ammonia and greenhouse gases (GHGs) emission, compost quality, pathogenic contaminants and phytotoxicity. The composting process was performed in 100-L, pilot-scale, plastic, cylindrical vessels for 50 days. The addition of biochar (3%, 5%, and 10%) increased the thermophilic temperature with a significant reduction in gaseous emissions (ammonia and CO2), microbial pathogens (Escherichia coli and Salmonella sp.), and phytotoxicity (Lepidium sativum seed germination assay) compared with that of the control compost products. However, according to the obtained results with in-vessel composting, the amendment of 10% biochar showed the most significant effects concerning the quality of the compost nutrients. The study reveals that the addition of biochar during in-vessel chicken manure composting is beneficial in the reduction of gaseous emissions and pathogenic microorganisms apart from improvement in plant nutrients.

Original languageEnglish
Article number131129
JournalChemosphere
Volume283
DOIs
StatePublished - Nov 2021

Keywords

  • Chicken manure
  • Green house gas
  • Mature compost
  • Pathogen reduction
  • Rice husk biochar

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