Biocrystallization of silver and gold ions by inactive cell filtrate of Rhizopus stolonifer

10.1016/j.colsurfb.2010.05.021Colloids and Surfaces B: Biointerfaces792531-534CSBB

Sequestration of Reactive Blue 4 by free and immobilized Bacillus subtilis cells and its extracellular polysaccharides

10.1016/j.colsurfb.2009.10.031Colloids and Surfaces B: Biointerfaces761179-185CSBB

Bioreduction of trivalent aurum to nano-crystalline gold particles by active and inactive cells and cell-free extract of Aspergillus oryzae var. viridis

10.1016/j.jhazmat.2009.12.066Journal of Hazardous Materials1771-3539-545JHMA

A Novel Method in Utilization of Bokbunja Seed Wastes From Wineries in Liquid-Phase Sequestration of Reactive Blue 4

Bokbunja seed wastes from a wine manufacturing industry were used to prepare carbon for the purpose of using it as an adsorbent for the removal of Reactive Blue 4 from aqueous solutions. A part of prepared carbon was treated with n-hexane to remove the seed oil present in large amounts in Bokbunja seeds. It was found that the hexane treated carbon was more efficient in removing the dye from aqueous solutions. Optimization of process parameters showed that pH 2 and contact time of 120 min was favorable for maximum adsorption. Langmuir and Khan isotherm models were applied to comprehend the adsorption process. Kinetic data showed that pseudo-first order model was a better fit than the pseudo-second order model. Alkaline pH favored desorption. Among the various desorption medium tested, acetone and ethanol showed promising results thus enabling the reuse of the carbon for next adsorption cycle. The study justifies the efforts to minimize the wastes by firstly using a winery waste as adsorbent and later reusing the same for the next cycle of adsorption in addition to recycling the desorption medium while simultaneously recovering the adsorbed dyes

Carbaryl sorption by porogen-treated banana pith carbon

10.1260/026361708788251367Adsorption Science and Technology269679-686ASTE