Lead biosorption onto waste beer yeast by-product, a means to decontaminate effluent generated from battery manufacturing industry

Abstract

This paper projects the potential of waste beer yeast Saccharomyces cerevisiae in biosorbing lead from battery manufacturing industrial effluent. Experiments were carried out as a function of pH, biosorbent concentration, lead concentration and agitation speed. Specific lead uptake of 2.34 mg/g was recorded and the data gave good fits for Freundlich and Langmuir models with K f and Q max values of 0.5149 and 55.71 mg/g. The roles played by amines, carboxylic acids, phosphates, sulfhydryl group and lipids in lead biosorption were studied. Electrostatic attraction may be the mechanism of biosorption. The extent of contribution of the functional groups and lipids to lead biosorption was in the order: carboxylic acids > lipids > amines > phosphates. Blocking of sulfhydryl group did not have any significant effect on lead uptake.

Bacteria and Fungi as Alternatives for Remediation of Water Resources Polluting Heavy Metals

“…Physical and chemical treatments such as autoclaving, drying, and boiling may affect binding properties, also chemical treatments such as alkali or ethanol treatment can elevate the biosorption capacity, especially evident in some fungal systems because of deacetylation of chitin to form chitosan-glucan complexes with higher metal affinities (Wang and Chen 2006). Pre-treating the fungal biomass can help shed light on the role played by functional groups in biosorption of lead (Parvathi, 2007). The bioadsorption capacity of autoclaved Mucor rouxii decreased as compared to the live fungus, attributed to the loss of intracellular uptake (Yan and Viraraghavan, 2000).…”

Metal uptake by psyllium (Plantago ovata L.) treated with lead (Pb) under semi-arid conditions

“…At present, adulteration of soil in cultivated fields with noxious heavy metals has appeared as a new menace to agriculture (Singh et al, 2007;Ahmad et al, 2012;Khan et al, 2012Khan et al, , 2013. Lead is extensively utilized in battery industries, pigments, photographic resources and paint industry (Martins et al, 2006;Parvathi et al, 2007). From these sources Pb easily reaches most of the farm fields due to man-made waste mismanagement.…”

Sequestering of Fe and Pb ions from Wastewater by <i>Canarium schweinfurthii</i> after carbonization and chemical treatment: Isothermal and Kinetic Modeling

“…This can be achieved physically; a process involving carbonization of the precursor material or chemically; a process of adding a chemical agent and then subjecting it to temperature (Dilek and Oznur, 2008). Metal uptake by biosorption is reported to occur through interactions with functional groups native to the biomass cell wall *1 (Goksungur et al, 2005;Krishnakuman et al, 2007). It is metabolism-independent and proceeds rapidly within some minutes by any one or combination of the following metal binding mechanisms; coordination, complexation, ion exchange, physical adsorption (e.g.electrostatic) or inorganic microprecipitation Carbonaceous surfaces, typically in the form of soot particles, play an important role in the chemistry of adsorption.…”