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Microbial removal of sulphur from petroleum coke (petcoke)
Fuel ( IF 7.4 ) Pub Date : 2019-01-01 , DOI: 10.1016/j.fuel.2018.08.072
Nimisha Tripathi , Raj S. Singh , Colin D. Hills

Petroleum coke (pet coke) is a carbonised heavy residual product obtained from petroleum processing. Pet coke contains between 1 and 10% w/w sulphur as both inorganic and organic forms. The removal of organic sulphur from pet coke is desirable to reduce the environmental harm of its combustion emissions but the elevated temperatures and pressures needed result in a lower fuel-value. The removal of sulphur by microbial attack involving acidophilic bacteria is an alternative approach and is the subject of this study. Single and mixed cultures of Thiobacillus thiooxidans (isolated from natural hot sulphur spring) and Thiobacillus ferrooxidans (isolated from an existing culture) were investigated for total sulphur removal from pet coke. Batch leaching experiments showed a reduction in total sulphur of 92% over 28 days. A combination of Thiobacillus species performed better than the single bacterial culture.

中文翻译:

微生物去除石油焦(石油焦)中的硫

石油焦(石油焦)是从石油加工中获得的碳化重质残余产品。石油焦含有 1% 至 10% w/w 的无机和有机形式的硫。从石油焦中去除有机硫有助于减少其燃烧排放对环境的危害,但所需的高温和高压会导致燃料价值降低。通过涉及嗜酸细菌的微生物攻击去除硫是另一种方法,也是本研究的主题。研究了硫氧化硫杆菌(从天然热硫泉分离)和氧化亚铁硫杆菌(从现有培养物中分离)的单一和混合培养物,以从石油焦中去除总硫。批量浸出实验表明,在 28 天内总硫减少了 92%。
更新日期:2019-01-01
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