Heavy metal removal from aqueous solution using sodium alginate immobilized sulfate reducing bacteria: Mechanism and process optimization.
Heavy metal removal was evaluated using sodium alginate immobilized sulfate reducing bacteria (SRB) under batch and continuous mode. Under batch conditions, more than 95% metal removal was achieved due to formation of insoluble metal sulfides exterior to the bead surface. Best heavy metal removal re...
| Publicado en: | Journal of Environmental Management Vol. 218; pp. 486 - 497 |
|---|---|
| Autores principales: | , , |
| Formato: | Artículo |
| Publicado: |
Academic Press Inc.
Jul2018
|
| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=129566456&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 129566456 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 03014797 EMJ jtl: Journal of Environmental Management issn: 03014797 maglogo: N pubinfo: dt: Jul2018 vid: 218 pid: 735 pub: Academic Press Inc. artinfo: ui: 129566456 10.1016/j.jenvman.2018.03.020 ppf: 486 ppct: 11 formats: tig: atl: Heavy metal removal from aqueous solution using sodium alginate immobilized sulfate reducing bacteria: Mechanism and process optimization. aug: au: Gopi Kiran, Mothe Pakshirajan, Kannan Das, Gopal affil: Centre for the Environment, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India su: Heavy metals Aqueous solutions Sodium alginate Sulfate-reducing bacteria Encapsulation (Catalysis) Process optimization sug: subj: All Other Basic Organic Chemical Manufacturing Other basic organic chemical manufacturing Heavy metals Aqueous solutions Sodium alginate Sulfate-reducing bacteria Encapsulation (Catalysis) Process optimization keyword: Immobilized sulfate reducing bacteria Packed column reactor Sodium alginate beads Sulfide precipitation Immobilized sulfate reducing bacteria Packed column reactor Sodium alginate beads Sulfide precipitation ab: Heavy metal removal was evaluated using sodium alginate immobilized sulfate reducing bacteria (SRB) under batch and continuous mode. Under batch conditions, more than 95% metal removal was achieved due to formation of insoluble metal sulfides exterior to the bead surface. Best heavy metal removal results were obtained at 48 h hydraulic retention time (HRT). Metal loading rate values upto 2.20 mg/L∙h for Fe(III), Zn(II), Cd(II), Pb(II) and Ni(II) and upto 4.29 mg/L∙h for Cu(II) were proved to be favorable for their removal using the continuous downflow column reactor packed with the immobilized SRB beads. Continuous metal removal from a mixture of the heavy metals showed that Cu(II) removal was maximum (99%), followed by Zn(II) (95.8%) and other metals at their respective low inlet concentrations. However, the removal values were reduced at a high inlet concentration of these metals, which matched well with low COD and sulfate reduction values. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
|---|