Biosorption of Arsenic (III) from Aqueous Solutions by Industrial Fermentation Waste <i>Aspergillus niger</i>

Abstract

Biosorption of As3+ ions by industrial fermentation waste Aspergillus niger free dry mycelium was investigated in a batch system..The influences of solution pH, biosorbent dose, As3+concentration, and contact time on As3+ were studied.The results indicatd that absorption capacity was strongly affected by the solution pH, the biosobent dose and initial As3+concentration.Optimum biosorption was observed to be 75% at pH 5.0,biosorbent dose 20g/L, initial As3+concentration 800ug/L. Adsorption equilibrium was established in 100 min. Biosorption equilibrium data were best described by Langmuir isotherm model.

Removal of Arsenic using Low Cost Biosorbent Tamarind Bark

“…It minimizes the sludge formation, cost and residual metal ion precipitation. In biosorption process the biosorbent selected for removal of heavy metal was a low cost easily available agricultural waste dead biomass [6].The objective of present work is to find the biosorption capacity of agricultural waste biosorbent tamarind bark for reducing arsenic metal using biosorption method. The various factors affecting the biosorption process were also evaluated.…”