Immobilized peptides/amino acids on solid supports for metal remediation

Abstract

Recently, a significant amount of work has focused on metal binding by natural systems for various applications. This review will focus on the utility of amino acids, short peptides, and proteins that have been immobilized onto solid supports for use in metal binding, These systems include single amino acids, poly-amino acids, and peptides immobilized onto supports such as silica, polymer resins, and membranes. Also included are the studies involving the use of immobilized amino acids in ion-exchange chromatograph

Removal of Chromium (VI) by Bacillus subtilis Isolated from East Calcutta Wetlands, West Bengal, India

“…Studies have reported potential of certain species of bacteria like Pseudomonas, Bacillus and Arthrobacter for bioremediation of chromium [3]- [5].…”

Competition of zinc(II) with cadmium(II) or mercury(II) in binding to a 12-mer peptide

“…Depending on the exposure level or chemical form, these pollutants may have adverse impacts on the environment and present a hazard for living organisms [2-3 5]. Consequently, there is a growing need for the detection, monitoring and removal of toxic metal constituents from contaminated media [4,5]. The attributes for these techniques may overlap if preconcentration methodologies are required for assisting analytical detection [5].…”

“…The drawbacks of physicochemical technologies that aim at the elimination of toxic metal ions include e.g. the production of metal-bearing toxic sludge or other wastes requiring further handling, the need of additional chemicals and energy, the lack of selectivity and the often high costs [4,5,9].…”

“…Novel approaches, either for the analysis or removal of heavy metal ions, are based on the use of natural systems [5]. Several reviews discuss the high potentials of bioremediation in toxic metal ion removal from a contaminated area.…”

“…Several reviews discuss the high potentials of bioremediation in toxic metal ion removal from a contaminated area. These methods apply either passive metal ion uptake by dead biomass [3,4,[9][10][11][12], the accumulation by living cells of microorganisms [9,[11][12][13][14][15], or the use of immobilized biomolecules [5,16]. Adsorption, ion exchange, chelation by small molecules, micro-precipitation or binding to oligopeptides/proteins may operate in the sorption/accumulation mechanisms [9,11].…”