Contribution of hot spring bacterial consortium in cadmium and lead bioremediation through quadratic programming model

Journal of Hazardous Materials
Sudip Kumar SenPradeep Kumar Das Mohapatra

Abstract

In the present investigation, a number of experiments have been conducted to isolate microbial strains from Taptapani Hot Spring Odisha, India for bioremediation of cadmium and lead. The strains Stenotrophomonas maltophilia (SS1), Aeromonas veronii (SS2) and Bacillus barbaricus (SS3) have shown better adaptation to metal tolerance test, with different concentrations of cadmium and lead and hence have been selected for further studies of metal microbial interaction and optimization. The results of bioremediation process indicate that consortium of thermophilic isolates adsorbed heavy metals more effectively than the individually treated isolates. Therefore, A 24 full factorial central composite design has been employed to analyze the effect of metal ion concentration, microbial concentration and time on removal of heavy metals with consortium. Analysis of variance (ANOVA) shows a high coefficient of determination value. The kinetic data have been fitted to pseudo-first order and second-order models. The isotherm equilibrium data have been well fitted by the Langmuir and Freundlich models. The optimum removal conditions determined for initial ion concentration was 0.3g/l; contact time 72h; microbial concentration, 3ml/l; and pH 7...Continue Reading

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Citations

Apr 29, 2015·Biotechnology Advances·M Sofía UrbietaKian Mau Goh
Sep 10, 2016·Genome Announcements·Federica ValerianiVincenzo Romano Spica
May 26, 2017·Environmental Science and Pollution Research International·Feliphe Lacerda Souza de AlencarViviane Souza do Amaral
Nov 28, 2017·Environmental Science & Technology·Isis E Mejias CarpioDebora F Rodrigues
Aug 16, 2018··Triwibowo YuwonoNommensen Pangihutan Ompusunggu

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