Harnessing the bio-mineralization ability of urease producing Serratia marcescens and Enterobacter cloacae EMB19 for remediation of heavy metal cadmium (II).
In the present study, urease positive Serratia marcescens (NCIM2919) and Enterobacter cloacae EMB19 (MTCC10649) were individually evaluated for remediation of cadmium (II) using ureolysis-induced calcium carbonate precipitation. Both the cultures were observed to efficiently remove cadmium from the...
| Publicado en: | Journal of Environmental Management Vol. 215; pp. 143 - 153 |
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| Autores principales: | , , |
| Formato: | Artículo |
| Publicado: |
Academic Press Inc.
Jun2018
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| 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=128826232&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 128826232 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: Jun2018 vid: 215 pid: 735 pub: Academic Press Inc. artinfo: ui: 128826232 10.1016/j.jenvman.2018.03.055 ppf: 143 ppct: 10 formats: tig: atl: Harnessing the bio-mineralization ability of urease producing Serratia marcescens and Enterobacter cloacae EMB19 for remediation of heavy metal cadmium (II). aug: au: Bhattacharya, Amrik Naik, S.N. Khare, S.K. affil: Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Delhi, New Delhi 11016, India Center for Rural Development and Technology, Indian Institute of Technology, Delhi, New Delhi 110016, India su: Enterobacter cloacae Heavy metal absorption & adsorption Energy dispersive X-ray spectroscopy Scanning electron microscopy Cadmium analysis sug: subj: Enterobacter cloacae Heavy metal absorption & adsorption Energy dispersive X-ray spectroscopy Scanning electron microscopy Cadmium analysis keyword: Bioremediation Cadmium (II) Enterobacter cloacae EMB19 Serratia marcescens Urease Bioremediation Cadmium (II) Enterobacter cloacae EMB19 Serratia marcescens Urease ab: In the present study, urease positive Serratia marcescens (NCIM2919) and Enterobacter cloacae EMB19 (MTCC10649) were individually evaluated for remediation of cadmium (II) using ureolysis-induced calcium carbonate precipitation. Both the cultures were observed to efficiently remove cadmium from the media through co-precipitation of Cd (II) and Ca (II). S. marcescens and E. cloacae EMB19, respectively showed 96 and 98% removal of initial 5.0 mg L −1 soluble Cd (II) from the urea and CaCl 2 laden media at 96 h of incubation period. At higher Cd (II) concentrations of 10 and 15 mg L −1 , cadmium removal efficiency was much higher in case of E. cloacae EMB19 compared to S. marcescens . In-vitro cadmium (II) remediation study using urease containing cell-free culture supernatant of S. marcescens and E. cloacae EMB19 showed respective 98 and 53% removal of initial 50 mg L −1 Cd (II) from the reaction mixtures in co-presence of Ca (II). While in sole presence of Cd (II), only 16 and 8% removal of Cd (II) were detected for S. marcescens and E. cloacae EMB19, respectively. The elemental analysis of the co-precipitated mineral products using Energy Dispersive X-ray spectroscopy (EDX) clearly showed the prevalence of Ca and Cd ions. The morphology Cd-Ca composites formed with respect to both the cultures were observed to be of different shape and size as revealed through Scanning Electron Microscopy (SEM). Entire study hence comes out with a sustainable bioremediation option which could be effectively used to tackle Cd (II) or other heavy metal pollution. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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