Biosorption of uranium metal ions by a nonliving protonated Sargassum fluitans seaweed biomass was used to remove the heavy metal uranium from the aqueous solution. Uranium biosorption isotherms were established for solution pH values ranging from pH 2.5-4.0. Uranium biosorption uptake was accompanied by the release of protons from the biomass. The sorption isotherms were highly pH dependent, a...

The potential to remove Cr(VI) from aqueous solutions through biosorption using dried Sargassum thunbergii Kuntze was investigated with respect to initial pH, amount of biosorbent, initial Cr(VI) concentrations and temperature. Cr(VI) removal efficiency was influenced significantly by the variation of pH, and the optimum pH was about 2.0. Moreover, the biosorption kinetics followed the pseudo-s...

Scanning transmission X-ray microscopy (STXM) was utilized for analysing the bioremediation of Cr(VI) by Citrobacter freundii, a species gram-negative bacteria. The biosorption and bioreduction processes were analysed chemical mapping cells biosorbed at different concentrations Cr(VI). STXM spectromicroscopy images recorded O K-edge Cr L-edge. A thorough analysis absorption features correspondi...

White Rot Fungi (WRF) are a class of microorganisms widely understood for their ability to breakdown an extensive range pollutants generally found in industrial wastewater. This specific literature review centers on the abilities treat wastewater, analysis biodegradation mechanism, future applications, and scaling up practical implementation. WRF usually carry out degradation process with ligni...

A kinetic study of cadmium and lead biosorption to a brown alga, Kjellmaniella crassiforia, was carried out. The shrinking core model derived by M. Gopala Rao and A. K. Gupta (Chem. Eng. J.24, 181, (1982)) was modified and adapted for description of the rate process of cadmium and lead biosorption to the alga. The biosorption rate process was well described and average apparent diffusion coeffi...

The potential use of microorganisms in the bioremediation U pollution has been extensively described. However, a lack knowledge on molecular resistance mechanisms become challenge for these technologies. We reported transcriptomic and microscopic response Stenotrophomonas bentonitica BII-R7 exposed to 100 250 ?M U. Results showed that exposure displayed up-regulation 185 148 genes during lag ex...

The incessant pervasiveness of heavy metals in the environment is one precursory factors pollution. This research study was endeavored upon to investigate bioremediation potential a nickel (Ni)-resistant bacterial isolate, identified as Bacillus altitudinis MT422188, whose optimum growth parameters were demonstrated at pH 7, temperature 32 °C, and 1 mM phosphate. Minimal Inhibitory Concentratio...

The present study aims to evaluate the competitive biosorption of lead, cadmium, copper, and arsenic ions by using native algae. A series of experiments were carried out in a batch reactor to obtain equilibrium data for adsorption of single, binary, ternary, and quaternary metal solutions. The biosorption of these metals is based on ion exchange mechanism accompanied by the release of light met...

1041 Heavy metals represent an important environmental problem due to their potential toxic effects, and their accumulation throughout the food chain leads to serious ecological and health problems. The increase of environment pollution by heavy metals generated the interest to the problem of live organisms resistance to these metals. Biosorption is one of the mechanisms of microorganisms resis...

The paper discusses various aspects of biosorption of microelements by marine seaweeds to be used as mineral feed supplement for livestock. n the study, biosorptive properties of a single marine species Cladophora rupestris and mixed species of algae from the Baltic Sea (a mixture f Cladophora sp. and Enteromorpha prolifera) were investigated. The mechanism of biosorption was identified as cati...