Isolation and process parameter optimization of Aspergillus sp. for removal of chromium from tannery effluent.
Five morphologically different fungi were isolated from leather tanning effluent in which Aspergillus sp. and Hirsutella sp. had higher potential to remove chromium. The potential of Aspergillus sp. for removal of chromium was evaluated in shake flask culture in different pH, temperature, inoculums size, carbon and nitrogen source. The maximum chromium was removed at pH 6, temperature 30 degrees C, sodium acetate (0.2%) and yeast extract (0.1%). Aspergillus sp. was applied in 2l bioreactor for removal of chromium, and it was observed that 70% chromium was removed after 3 days.
Srivastava
Shaili
S
Environmental Biotechnology Laboratory, Department of Environmental Sciences, College of Basic Sciences and Humanities, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttaranchal 263 145, India.
Thakur
Indu Shekhar
IS
D001230:Aspergillus / Q000145:classification / Q000378:metabolism*; D018533:Biomass; D019149:Bioreactors; D002857:Chromium / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D007218:Industrial Microbiology; D007220:Industrial Waste / Q000032:analysis*; D013633:Tanning; D013696:Temperature; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*
D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D002857:Chromium