Complementing compost with biochar for agriculture, soil remediation and climate mitigation

Naser Khan, Nanthi Bolan, Stephen Jospeh, Mai Thi Lan Anh, Sebastian Meier, Rai Kookana, Nils Borchard, Miguel Angel Sánchez-Monedero, Keiji Jindo, Zakaria M. Solaiman, Abdullah A. Alrajhi, Binoy Sarkar, B. B. Basak, Hailong Wang, Jonathan W.C. Wong, M. K. Manu, Md Abdul Kader, Quan Wang, Ronghua Li, Yong Sik OkPiumi Amasha Withana, Rongliang Qiu

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Citations (Scopus)

Abstract

We are racing to manage a phenomenally increasing volume of organic wastes from urban, industrial and agricultural entities. Composting is one of the preferred ways to convert biodegradable wastes into nutrient-rich soil conditioners. The age-old technique of composting process is being improved with innovative scientific means. Biochar, a widely studied soil amendment, is a carbonaceous material that can hold nutrients from endogenic/exogenic sources. Biochar-compost, a biochar-complemented compost, may provide a wide range of benefits expected from both materials. Compost and biochar can improve physicochemical and microbiological attributes of soils by supplying labile and stable carbons, and nutrients. Compost may also supply beneficial microbes. This means biochar-compost is a synergic soil amendment that can improve soil quality, increase crop production, and remediate contaminated soils. Having stable carbon, large reactive surface with nutrient loads, biochar can interact widely with organic biomass and modify physicochemical and-microbial states during a composting process while making biochar-compost. Production and application methods of biochar, compost and biochar-compost are covered for agricultural and contaminated soils. Metal and organic contaminations are also discussed. A case study on making and field-testing a mineral-enhanced biochar and a biochar-compost to improve rice yield, is presented at the end.

Original languageEnglish
Title of host publicationAdvances in Agronomy
EditorsDonald L. Sparks
PublisherAcademic Press Inc.
Pages1-90
Number of pages90
ISBN (Print)9780443192623
DOIs
Publication statusPublished - 2023 Jan

Publication series

NameAdvances in Agronomy
Volume179
ISSN (Print)0065-2113

Bibliographical note

Funding Information:
Nils Borchard's study was funded by the European Union's Horizon 2020 research and innovation program “Towards climate-smart sustainable management of agricultural soils,” grant agreement no. 862695. The research presented in the case study was carried out as part of the project “Researching the Environmental factors affect to carbon balance in paddy rice, toward greenhouse gas emission mitigation (CH 4 , CO 2 )” funded by the Thai Nguyen University, Vietnam. Additional financial support from the research project “Market Research for Carbon-based fertilizer in Vietnam and Socio-economic Evaluation of Biochar amendment to improved soil nutrient” is also acknowledged.

Publisher Copyright:
© 2023 Elsevier Inc.

Keywords

  • Agriculture
  • Biochar
  • Climate
  • Compost
  • Metal
  • Organic contaminant
  • Organic wastes
  • Remediation
  • Soil
  • Toxicity

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Soil Science

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