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Zhao, Bin [VerfasserIn]; Peng, Tianyue [VerfasserIn]; Hou, Renjie [VerfasserIn]; Huang, Yao [VerfasserIn]; Zong, Wenjing [VerfasserIn]; Jin, Yuanliang [VerfasserIn]; O'Connor, David [VerfasserIn]; Sahu, Shovan Kumar [VerfasserIn]; Zhang, Hao [VerfasserIn]

Synthesis and Characterization of Mgo-Loaded Rice Husk Biochar as Functional Amendment for Ecological Reclamation of Manganese Mine Tailing

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  • Medientyp: E-Book
  • Titel: Synthesis and Characterization of Mgo-Loaded Rice Husk Biochar as Functional Amendment for Ecological Reclamation of Manganese Mine Tailing
  • Beteiligte: Zhao, Bin [VerfasserIn]; Peng, Tianyue [VerfasserIn]; Hou, Renjie [VerfasserIn]; Huang, Yao [VerfasserIn]; Zong, Wenjing [VerfasserIn]; Jin, Yuanliang [VerfasserIn]; O'Connor, David [VerfasserIn]; Sahu, Shovan Kumar [VerfasserIn]; Zhang, Hao [VerfasserIn]
  • Erschienen: [S.l.]: SSRN, [2022]
  • Umfang: 1 Online-Ressource (31 p)
  • Sprache: Englisch
  • DOI: 10.2139/ssrn.4039581
  • Identifikator:
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  • Beschreibung: A novel magnesium modified rice husk biochar (MRB) was synthesized for toxic metal stabilization prior to the vegetation reclamation of mine tailing. Manganese tailing was mixed with the amendments followed by 90 days of incubation to investigate the variation of Mn leachability as a function of treatments, dosages and incubation time. Results indicated that 5% MRB significantly enhanced the reduction of tailing leachable Mn from 59.88 mg/L to 21.68 mg/L with a maximum stabilization efficiency (SE) of 63.8%. The microporous matrix with a pore size range of 1.055-1.075 nm along with surface dispersion of MgO contributed to the comprehensive effects of pore trapping, surface complexation and further precipitation. The pH of amended substrates increased slightly with increasing amendment dosage or MgO loading value, whereas opposite variation trend was detected with the extension of incubation time. The post-amendment characterization implied that the stabilization mechanism was combined processes of leaching, direct interaction with Mg cations and indirect species transformation, promoting the generation of stable MgMn 2 O 4 , C 4 H 6 MnO 4 and MnO(OH) 2 . This study recommends a novel technology for transforming agricultural waste into microporous functional amendments, facilitating the effective reclamation of mining tailing
  • Zugangsstatus: Freier Zugang