شماره ركورد كنفرانس :
4518
عنوان مقاله :
Study of immobilized and free Thiobacillus thioparus capability for detection of hydrogen sulfide
Author/Authors :
Maryam Mirzaei Department of Chemical Engineering - Faculty of Engineering - University of Tehran , Ghasem Amoabediny Department of Chemical Engineering - Faculty of Engineering - University of Tehran , Hamid Rashedi Department of Chemical Engineering - Faculty of Engineering - University of Tehran , Fatemeh Yazdian Department of Chemical Engineering - Faculty of Engineering - University of Tehran , Marzieh Azizi Research Center for New Technologies in Life Science Engineering - University of Tehran
كليدواژه :
immobilization , free cell , Thiobacillus thioparus , poly vinyl alcohol
عنوان كنفرانس :
The 7th International Chemical Engineering Congress & Exhibition (IChEC 2011
چكيده لاتين :
The microbial immobilization method using polyvinyl alcohol (PVA) gel as an immobilizing
material was used for entrapment of Thiobacillus thioparus, a sulfide oxidizer bacterium. The
immobilized beads and free cells of Thiobacillus thioparus were applied to a system in which
hydrogen sulfide was produced. As H2S was consumed by the bacteria, the content of dissolved
oxygen was decreased and this reduction was determined by use of an O2 electrode. The
immobilized system showed a lag time in detection of hydrogen sulfide because of the resistance
which is caused by the matrix of poly vinyl alcohol. The reduction rate of oxygen was also
calculated and it was shown that consumption rate of hydrogen sulfide in immobilized system is
more uniform than free cell system. H2S was used in 10 ppm and 20 ppm concentration.
