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Pollution control in biochar-driven clean composting: Emphasize on heavy metal passivation and gaseous emissions mitigation
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
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2021 (Engelska)Ingår i: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 420, artikel-id 126635Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Present study was focus on the pollution control aspect of gaseous mitigation and heavy metal passivation as well as their associated bacterial communities driven by apple tree branch biochar (BB) during sheep manure composting. Six treatment was performed with distinct concentration of BB from 0%, 2.5%, 5%, 7.5%, 10%, and 12.5% as T1 to T6. Compared with compost without additive, biochar-based composting recorded faster thermophilic process (4thd) and longer duration (12-14d), lower gaseous emission in terms of ammonia (5.37-10.29 g), nitrous oxide (0.12-0.47 g) and methane (4.38-30.29 g). Notably highest temperature (65.3 celcius) and active thermophilic duration (14d), minimized gaseous volatilization were detected in 10%BB composting. Aspect of non-degradability and enrichment-concentration properties of heavy metals, the total copper (Cu) and zinc (Zn) were increased (from initial 12.71-17.91 to final 16.36-29.36 mg/kg and 107.39-146.58-161.48-211.91 mg/ kg). In view of available diethylene triamine pentacetic acid (DTPA) extractable form, DTPA-Cu and DTPA-Zn from 4.29 to 6.57 and 31.66-39.32 mg/kg decreased to 3.75-4.82 and 23.43-40.54 mg/kg, especially the maximized passivation rate of 46.95% and 56.27% were present in 10%BB composting. Additionally, bacterial diversity of biochar-based composting was increased (1817-2310 OTUs) than control (1686 OTUs) and dominant by Firmicutes (52.75%), Bacteroidetes (28.41%) and Actinobacteriota (13.98%). Validated 10% biochar-based composting is the optimal option for effectively control environmental pollution to obtain hygienic composting.

Ort, förlag, år, upplaga, sidor
Elsevier, 2021. Vol. 420, artikel-id 126635
Nyckelord [en]
Branch biochar, Gaseous emissions, Heavy metals, Bacterial community, Sheep manure-composting, GREENHOUSE-GAS EMISSIONS, POULTRY MANURE, MICROBIAL COMMUNITY, AMMONIA EMISSIONS, BIOAVAILABILITY, IMPROVEMENT, AMENDMENT, YIELD
Nationell ämneskategori
Miljövetenskap Mikrobiologi
Forskningsämne
Resursåtervinning
Identifikatorer
URN: urn:nbn:se:hb:diva-26659DOI: 10.1016/j.jhazmat.2021.126635ISI: 000696929700008PubMedID: 34329093Scopus ID: 2-s2.0-85111052339OAI: oai:DiVA.org:hb-26659DiVA, id: diva2:1601615
Tillgänglig från: 2021-10-08 Skapad: 2021-10-08 Senast uppdaterad: 2022-01-18Bibliografiskt granskad

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Mukesh Kumar, Awasthi

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Mukesh Kumar, Awasthi
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Akademin för textil, teknik och ekonomi
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Journal of Hazardous Materials
MiljövetenskapMikrobiologi

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