Study on Mechanism of Flue Gas Desulfuration by Using Liquid-Phase Biochemical Method

Abstract:

Wet Biochemical Flue Gas Desulphurization technique (WB-FGD) is combined both catalyst of transition metal with microbial metabolize to achieve flue gas desulphurization. In the self-designed device of power plant flue gas desulphurization, study the desulphurization kinetics according to the absorption solution pH, Fe³⁺ concentration, inlet concentration of SO₂, temperature and other factors. The results show that: Concentration of Fe³⁺ is the most critical factors in the desulphurization process, the desulphurization efficiency is decreased with the increasing of Fe³⁺ concentration, which in the range of 0~0.01mol·L^-1, and the desulphurization efficiency do not change significantly with the further increasing of the concentration of Fe³⁺.the desulphurization efficiency is decreased with the increasing concentration of H⁺ when pH of the solution in the range of 1.5~3.5. The efficiency of desulphurization decrease with the increasing concentration of SO₂, which in the range of 1145-3432mg·L^-1. The oxidation rate increase with the increasing temperature at 20~40°C.The kinetic equation and controllable parameters of changes of Fe³⁺ concentration are obtained according to the experimental data in WB-FGD.

• Periodical: Advanced Materials Research (Volumes 356-360)
• Pages: 1556-1560
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.356-360.1556
• Online since: October 2011
• Authors: Zhi An Liu, Ying Chang, Peng Wang, Jlan Jun Jia, Qi Wang Liu
• Keywords: Catalyzed Oxidation, Desulfurization, Kinetic

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