Comparative study of using different materials as bacterial carriers to treat hydrogen sulfide
Comparative study of using different materials as bacterial carriers to treat hydrogen sulfide
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DOI：
10.1007/s00253-008-1745-2
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发表时间：
2008-12-01
影响因子：
5
通讯作者：
Jia, Jinping
中科院分区：
文献类型：
--
作者：
Li, Zhiling;Sun, Tonghua;Jia, Jinping
众所周知，使用支持介质固定微生物为微生物生长提供表面并保护微生物免受抑制性化合物的影响。在这项研究中，分子筛，颗粒状多孔碳，和氧化铁脱硫剂，固定与自养细菌能够氧化亚铁铁，处理硫化氢（H2S）。它们相应的生物反应器分别称为BMS、BPC和BFO。H2S负荷，气体停留时间，氢离子，和铝，铁，和二价铁的浓度回收废水进行了评价。采用热重分析、Brauner-Emmett-Teller法和扫描电子显微镜对填料进行了表征。结果表明，BFO对BPC的清除能力最强，BPC次之，BMS最弱。本研究表明，材料特性逐渐影响生物反应器的生物降解能力。根据载体的不同，H2S被氧化成单质硫和氧化态硫。此外，本研究揭示了在极酸性条件下同时处理H2S的潜在应用。
The use of support media for the immobilization of microorganisms is widely known to provide a surface for microbial growth and protect the microorganisms from inhibitory compounds. In this study, molecular sieve, granular porous carbon, and ferric oxide desulfurizer, immobilized with autotrophic bacteria capable of oxidizing ferrous iron to ferric iron, were developed to treat hydrogen sulfide (H2S). Their corresponding bioreactors were referred to as BMS, BPC, and BFO, respectively. H2S loading, gas retention time, hydrogen ion, and aluminous, ferric, and ferrous iron concentrations of recycling effluents were evaluated. Thermogravimetric analysis, Brauner-Emmett-Teller method, and scanning electron microscopy were used to characterize packing materials. Results showed that the elimination capacity was in the order of BFO > BPC > BMS. This study suggested that the material characteristics progressively influenced the deodorization capacities of bioreactors. H2S was oxidized into elemental sulfur and oxidized sulfur species, according to differences of carriers. Furthermore, this study revealed the potential application of simultaneously treating of H2S under extremely acidic conditions.