The Study on Removal the PH₃ in CO by Dephosphorization Bacteria

Abstract:

For finding microbes of degradation phosphine (PH₃) in CO, a low concentration PH₃ gas in CO was used to induce domestication the microorganism from anaerobic tank of sewage treatment plant. The influence of domestication process was researched in detail, and the microbial growth and performance of dephosphorization domesticated was inspected. The results shown that PH₃ concentration, pH, and replaced water have a greatly influence for the process. A group dephosphorization bacterium which have a characteristic of fast growth and reproduction and degradation PH₃ in CO to phosphate was acquired after domesticated the bacteria from anaerobic tank more than 11d. Appropriate conditions of dephosphorization bacteria to degradation PH₃ are pH=4.5-5.5, 30°C. The phosphine conversion rate was 68.59% and 65.32% for 24h respectively to the concentration of 12 ppm or7ppm PH₃ in CO and the 2/3 of products was phosphate primarily. But the aerobic tank bacteria cannot be domesticated.

• Periodical: Advanced Materials Research (Volumes 781-784)
• Pages: 861-868
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.781-784.861
• Online since: September 2013
• Authors: Jing Deng, Liang Chen, Wen Wei
• Keywords: Carbon Monoxide, Dephosphorization Bacteria, Induced Domesticated, Phosphate, Phosphine

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