Naslov
Biosorption of Mn (II), Co (II) and Cr(VI) in a horizontal rotating tubular bioreactor : experiment and evaluation of integral bioprocess model

Autori
Rezić, Tonči ; Rezić, Iva ; Zeiner, Michaela ; Hann, Stephan ; Stingeder, Gerhard ; Šantek, Božidar

Izvornik
Brazilian journal of chemical engineering (0104-6632) 31 (2014), 3; 799-814

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
heavy metals; mixed microbial culture; bioadsorption; biofilm; horizontal rotating tubular bioreactor

Sažetak
Industrial wastewater contaminated with toxic heavy metals is big ecological and environmental problem. The use of biological materials for effective removal and recovery of heavy metals from contaminated wastewaters has emerged as a potential alternative method to conventional treatment techniques. The aim of this paper was the study of biosorption of toxic metals from aqueous solution by the application of microorganisms, isolated from polluted (metal-laden) soil. Bioadsorption process for heavy metals removal was conducted in a new pilot scale horizontal rotating tubular bioreactor (HRTB). This bioreactor provides conditions for microorganisms’ growth in a form of suspended cells and biofilm. Due to the biofilm properties, it can protect microorganisms from interaction with toxic metals in the surrounding environment. Three metals were selected as model examples: cations of manganes and cobalt, and hexavalent chromium (an oxyanion). Optimized bioreactor condition [medium inflow rate (F) and bioreactor rotation speed (n)] for metal removal was monitored, and, under optimized bioreactor conditions, promising results were obtained.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA