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Comparison of biochars derived from different types of feedstock and their potential for heavy metal removal in multiple-metal solutions

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  • معلومة اضافية
    • الموضوع:
      2019
    • Collection:
      Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB
    • نبذة مختصرة :
      Three different types of feedstocks and their biochars were used to remove Cr(III), Cd(II), Cu(II) and Pb(II) ions from a mixture of multiple heavy metals. The effect of the initial concentration of heavy metals in solution has been analysed, and kinetics modelling and a comparison of the adsorption capacity of such materials have been performed to elucidate the possible adsorption mechanisms. The results show that the adsorption capacity is dependent on the type of feedstock and on the pyrolysis conditions. The adsorption capacity of the biomass types is ranked as follows: FO (from sewage sludge)» LO > ZO (both from agriculture biomass waste)» CO (from wood biomass waste). Biochars, which are the product of the pyrolysis of feedstocks, clearly improve the adsorption efficiency in the case of those derived from wood and agricultural biomasses. Complexation and cation exchange have been found to be the two main adsorption mechanisms in systems containing multiple heavy metals, with cation exchange being the most significant. The pore structure of biomass/biochar cannot be neglected when investigating the adsorption mechanism of each material. All the disposal biomasses presented here are good alternatives for heavy metal removal from wastewaters.
    • File Description:
      application/pdf
    • ISSN:
      20452322
    • Relation:
      Ministerio de Economía y Competitividad CTM2015-65414-C2-1-R; Ministerio de Economía y Competitividad AGL2015-70393-R; Scientific reports; Vol. 9 (July 2019), art. 9869; https://ddd.uab.cat/record/222789; urn:10.1038/s41598-019-46234-4; urn:oai:ddd.uab.cat:222789; urn:scopus_id:85068778241; urn:articleid:20452322v9p9869; urn:pmid:31285499; urn:pmc-uid:6614460; urn:pmcid:PMC6614460; urn:oai:pubmedcentral.nih.gov:6614460; urn:oai:egreta.uab.cat:publications/405bd853-497d-4f09-a570-dab5f3e7110d; urn:oai:egreta.uab.cat:publications/74fb486e-123e-4516-9b46-bcfea47db046
    • الدخول الالكتروني :
      https://ddd.uab.cat/record/222789
    • Rights:
      open access ; Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. ; https://creativecommons.org/licenses/by/4.0/
    • الرقم المعرف:
      edsbas.A437663B