Inactive cells of Rhizopus arrhizus have been documented to exhibit a high thorium biosorptive uptake (170 mg/g) from aqueous solutions. The mechanism of thorium sequestering by this biomass type was investigated following the same method as for the uranium biosorption mechanism. The thorium sequestering mechanism appeared somewhat different from that of uranium. Experimental evidence is presen...

The presence of metal ions in aqueous solutions represents a major environmental problem. These inorganic species are persistent and non-biodegradable pollutants that should be eliminated from water. In the recent years biosorption have emerged as an economical and environmental friendly method for the decontamination of polluted water. The present work represents a review of the recently publi...

Raw jute fabric was chemically modified with 1 % NaOH for 30 min, 17.5 5 min or 0.7 NaClO2 and 60 to study the influence of changes in chemical composition fabrics quantity carboxyl groups on biosorption capacity nickel ions. The effects contact time initial concentration ions were also investigated. obtained results revealed that can be explained by pseudo-second- order kinetic model, while ex...

In recent decades, environmental pollution has emerged as a core issue, around the globe, rendering it of fundamental concern to eco-toxicologists, environmental biologists, eco-chemists, pathologists, and researchers from other fields. The dissolution of polluting agents is a leading cause of environmental pollution of all key spheres including the hydrosphere, lithosphere, and biosphere, amon...

Abstract Dissolved copper in stormwater runoff is a significant environmental problem. Biosorption of dissolved metals using microorganisms known as green, low-cost and efficient method. However, the role live biological agents remediation Sustainable Drainage (SuDS) has not been reported. In this study, effect pH, initial concentration temperature, on bacteria different stages biofilm developm...

ABSTRACT. Biosorption is a cost effective tool for removing heavy metals from aqueous solutions. In the present study, M. azedarach biomass has been used biosorption of Ni(II) ion solution. The effect pH, contact time, concentration and temperature were separately studied. optimum pH was found to be 6.0. 92% founded, when 25 mg/L initial concentrations at room temperatures in 60 min. It also ob...

The study was navigated to examine the metal biosorbing ability of bacterial strain OSM29 recovered from rhizosphere of cauliflower grown in soil irrigated consistently with industrial effluents. The metal tolerant bacterial strain OSM29 was identified as Bacillus thuringiensis following 16S rRNA gene sequence analysis. In the presence of the varying concentrations (25-150 mgl(-1)) of heavy met...

Extracellular Polysaccharides (EPS) from both prokaryotes and eukaryotes have a great deal of research interest as they protect the producer from different stresses including antibiotics, ionic stress, desiccation and assist in bio-film formation, pathogenesis, adhesion, etc. In this study haloalkaliphilic Bacillus sp., known to cope with osmophilic stress, was selected and screened for EPS pro...

Highly toxic nickel is released into the environment from a number of industrial processes, but current techniques for its removal are expensive and may cause secondary pollution. We developed a biosorbent of chitosan-immobilized brown algae (Laminaria japonica). The effects of different parameters on the adsorption capacity and biosorption-desorption of Ni from aqueous solution were evaluated....

The decolorization potential of textile dye Reactive Red 198 (RR198) by Aspergillus parasiticus fungal biosorbent has been investigated as a function of initial pH, contact time, biosorbent and initial dye concentration in a batch system. Maximum dye biosorption capacity 1.03x10 mol g was observed at pH 2.0 and 2.0 g L of biosorbent concentration. Biosorption equilibrium was attained within 50 ...