Journal ArticleDOI
Heavy metal removal by biosorption using Phanerochaete chrysosporium
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TLDR
As a general trend, metal removal efficiency decreased as the initial metal ion concentration increased, and the results fitted the Langmuir and Freundlich isotherms well.Abstract:
Biosorption using microbial cells as adsorbents is being seen as a cost-effective method for the removal of heavy metals from wastewaters. Biosorption studies with Phanerochaete chrysosporium were performed for copper (II), lead (II), and cadmium (II) to evaluate the effectiveness and to optimize the operational parameters using response surface methodology. The operational parameters chosen were initial metal ion concentration, pH, and biosorbent dosage. Using this method, the metal removal could be correlated to the operational parameters, and their values were optimized. The results showed fairly high adsorptive capacities for all the metals within the settings of the operational parameters. The removal efficiencies followed the order Pb>Cu>Cd. As a general trend, metal removal efficiency decreased as the initial metal ion concentration increased, and the results fitted the Langmuir and Freundlich isotherms well.read more
Citations
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Journal ArticleDOI
Optimization of process variables by the application of response surface methodology for dye removal using a novel adsorbent
TL;DR: In this paper, a hybrid adsorbent that was prepared by pyrolysing a mixture of carbon and flyash in 1:1 ratio was used for decolourizing Verofix Red (Reactive Red 3GL) and Lanasyam Brown Grl (Acid Brown 29) from aqueous solution.
Journal ArticleDOI
Optimization of batch process parameters using response surface methodology for dye removal by a novel adsorbent
TL;DR: In this paper, a hybrid adsorbent that was prepared by pyrolysing a mixture of carbon and fly ash in 1:1 ratio was successfully employed for experimental design and analysis.
Journal ArticleDOI
Decolourization of aqueous dye solutions by a novel adsorbent: Application of statistical designs and surface plots for the optimization and regression analysis
K. Ravikumar,B. Deebika,K. Balu +2 more
TL;DR: An empirical model was developed and validated applying ANOVA analysis incorporating interaction effects of all parameters and optimized using response surface methodology and complete removal (100%) was observed for both the dyes using the hybrid adsorbent.
Journal ArticleDOI
Application of response surface methodology to optimize the process variables for Reactive Red and Acid Brown dye removal using a novel adsorbent
TL;DR: In this paper, a hybrid adsorbent that was prepared by pyrolysing a mixture of carbon and flyash at 1:1 ratio was used for decolourizing Verofix Red (Reactive Red 3GL) and Lanasyam brown Grl (Acid Brown 29) from aqueous solution.
Book ChapterDOI
Biosorption of Metals
TL;DR: This chapter deals with the use of fungal biomass for removal of metals from solution and refers to the literature since 1990, as the older literature has been reviewed exhaustively by Volesky (1990).
References
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Book
Response surfaces : designs and analyses
John A. Cornell,André I. Khuri +1 more
TL;DR: In this paper, the authors present a methodology for estimating response surfaces that rival least squares based on the integrated mean squared error criterion analysis of multiresponse experiments with block effects mixture designs and analyses nonlinear response surface models.
Journal ArticleDOI
Response Surfaces: Designs and Analyses
TL;DR: In this paper, the authors present a methodology for estimating response surfaces that rival least squares based on the integrated mean squared error criterion analysis of multiresponse experiments with block effects mixture designs and analyses nonlinear response surface models.
Journal ArticleDOI
Multi-Factor Experimental Designs for Exploring Response Surfaces
George E. P. Box,J. S. Hunter +1 more
TL;DR: In this paper, the concept of the variance function for an experimental design is introduced, and the problem of selecting practically useful designs is discussed, and in this connection, the notion of variance function is introduced.
Journal ArticleDOI
Biosorption of Lead, Cadmium, and Zinc by Citrobacter Strain MCM B-181: Characterization Studies
TL;DR: Metal desorption studies indicated that Citrobacter beads could, in principle, be regenerated and reused in adsorption−desorption cycles, and a new mathematical model used for batch kinetic studies was found to be highly useful in prediction of experimentally obtained metal concentration profiles as a function of time.
Journal ArticleDOI
Accumulation of cadmium, lead, and nickel by fungal and wood biosorbents
Zdenek R. Holan,Bohumil Volesky +1 more
TL;DR: In this article, the authors investigated the effect of fungal biomass on the metal uptake in the following decreasing preference pb>Cd>Ni, and found that the highest metal uptake was achieved by Picea engelmanii biomass with qmax = 351 mg Pb/gA.