Biosorption of Zn(II) on the different Ca-alginate beads from aqueous solution

Lai, Yi-Ling; Annadurai, G.; Huang, Fu-Chuang; Lee, Jiunn‐Fwu

doi:10.1016/j.biortech.2007.11.041

Cited by 67 publications

(30 citation statements)

References 23 publications

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“…Desorption of heavy metals sequestered by microbes has been achieved with diluted acids [16,28], acidified buffers [31], or chelators [15,19]. After each desorption treatment, the volume of metal-containing waste will be significantly reduced, allowing convenient handling thereafter.…”

Section: Discussionmentioning

confidence: 99%

“…Immobilization of bacterial biomass to chemical or biological matrices has been attempted by many as an alternative approach. The most popular immobilization means for microbes fall into two categories: artificial entrapment in gel beads [15][16][17] and natural colonization on solid substances, such as activated carbon [18], ceramic rings [19], glass beads [20], loofah sponge [21], sand columns [22], and even live macroalgae [23]. For the entrapment approaches, additional time of a skilled staff is required to carry out the immobilization procedures.…”

Section: Introductionmentioning

confidence: 99%

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Self-immobilization of Recombinant Caulobacter crescentus and Its Application in Removal of Cadmium from Water

Patel

Wilson

McKay

et al. 2010

Appl Biochem Biotechnol

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Microbial biofilms can be valuable in many biotechnological applications, including bioremediation. We have previously constructed a recombinant strain of Caulobacter crescentus JS4022/p723-6H by inserting a hexahistidine peptide to a permissive site of the host surface layer (S-layer) protein RsaA. This engineered strain is highly effective in removal of cadmium from water as free cells. In this communication, we examined the biofilms formed by self-immobilized JS4022/p723-6H and evaluated their ability to retrieve cadmium from contaminated water samples. According to light and electron microscopic observations, JS4022/p723-6H cells developed a uniform monolayer biofilm on borosilicate surfaces through their intrinsic appendage, a stalk with an adhesive holdfast. The density of the biofilms reached a maximum after 48 h of incubation and was not affected by exposure to at least 1 ppm cadmium. When 0.4 ppm Cd(II) was added to the growth medium, immobilized JS4022/p723-6H removed 76.9% of the total metal, whereas the control strain only removed 13.5%. When a water sample collected from Lake Erie was spiked with various amounts of CdCl2, immobilized JS4022/p723-6H was able to sequester 44 approximately 51% of the total metal, compared to 37 approximately 42% accumulated by the control strain. By combining two powerful techniques, cell surface display and self-immobilization, we achieved complete separation of dissolved heavy metals from contaminated water in a single step. This study laid down the foundation to cost-effectively construct large-scale bioreactors with high efficiency and specificity to retrieve environmental contaminants from water.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Self-immobilization of Recombinant Caulobacter crescentus and Its Application in Removal of Cadmium from Water

Patel

Wilson

McKay

et al. 2010

Appl Biochem Biotechnol

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“…Successful sorption was reported for Cd by red alga (Sari and Tuzen 2008 ), rice polish agricultural waste (Kumar and Bandyopadhyay 2006 ), wheat bran (Singh et al 2006 ), and black gram husk (Saeed and Iqbal 2003 ). Sorption of Cu by lichen biomass immobilized in grape stalks (Ekmekyapar et al 2006 ), spent grains (Lu and Gibb 2008 ), marine alga (Da Silva et al 2002 ), green alga (Deng et al 2007 ), activated carbon (Esmaeili et al 2008 ), and polysulfone matrices (Beolchini et al 2003 ); Ni sorption by cone biomass (Malkoc 2006 ); biosorption of Pb with the use of polymerized banana stem (Noeline et al 2005 ); and sorption of Zn by orange peel cellulose with fungal cells immobilized in Ca-alginate beads (Lai et al 2008 ), mature jamun (King et al 2008 ) and neem tree barks/leaves (Arshad et al 2008 ) have been reported. Bhattacharyya and Sharma ( 2004 ) suggested neem leaf powder as a suitable sorbent of dyes.…”

Section: Biosorptionmentioning

confidence: 98%

In-Situ Remediation Approaches for the Management of Contaminated Sites: A Comprehensive Overview

Kuppusamy

Thavamani

Megharaj

et al. 2016

Reviews of Environmental Contamination and Toxicology

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Though several in-situ treatment methods exist to remediate polluted sites, selecting an appropriate site-specific remediation technology is challenging and is critical for successful clean up of polluted sites. Hence, a comprehensive overview of all the available remediation technologies to date is necessary to choose the right technology for an anticipated pollutant. This review has critically evaluated the (i) technological profile of existing in-situ remediation approaches for priority and emerging pollutants, (ii) recent innovative technologies for on-site pollutant remediation, and (iii) current challenges as well as future prospects for developing innovative approaches to enhance the efficacy of remediation at contaminated sites.

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“…(Lai et al 2008) successfully used the Freundlich model to describe the metal removal process using calcium alginate. The Langmuir, Freundlich, Redlich-Peterson, Radke-Prausnitz and Toth models were evaluated by (Limons 2008), which removed metals using aquatic macrophyte, and all models, except Freundlich, had R 2 above 0.90.…”

Section: Equilibrium Studymentioning

confidence: 99%

“…The representation of equilibrium data can be ascertained using ion-exchange isotherms, or even adsorption isotherms (Papageorgiou et al 2006;Pieroni and Dranoff 1963;Lai et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Chemical equilibrium of ion exchange in the binary mixture Cu2+ and Ca2+ in calcium alginate

et al. 2015

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Biopolymer alginate is capable of triggering interchain interactions in the presence of divalent and trivalent cations. Calcium alginate particles obtained by the emulsification method have been used in ion-exchange packed bed tests to remove synthetic copper effluents. Adsorption equilibrium data were obtained from single and binary component systems, which were subsequently subject to mathematical modeling. In the case of the modeling system with binary components, where the calcium was considered as a second ion, there was no significant improvement for the models analyzed, in counterpoise to the isotherm models applied to the single component system. The ideal law of mass action and the law of mass action which presupposed that both phases were non-ideal showed similar results. This process was found to be effective and feasible for industrial applications used to in heavy metal removal processes.

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Biosorption of Zn(II) on the different Ca-alginate beads from aqueous solution

Cited by 67 publications

References 23 publications

Self-immobilization of Recombinant Caulobacter crescentus and Its Application in Removal of Cadmium from Water

Self-immobilization of Recombinant Caulobacter crescentus and Its Application in Removal of Cadmium from Water

In-Situ Remediation Approaches for the Management of Contaminated Sites: A Comprehensive Overview

Chemical equilibrium of ion exchange in the binary mixture Cu2+ and Ca2+ in calcium alginate

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