Bioresource Technology ( IF 11.4 ) Pub Date : 2020-06-30 , DOI: 10.1016/j.biortech.2020.123755 Sara Haghighatian 1 , Elham Mazarei 1 , Mohammad Mahdi Doroodmand 1 , Axel Klein 2 , Mina Memarpoor-Yazdi 1
In this study, the interaction of the magnetotactic bacterium with sulfite compounds and their potential to degrade SO2 was investigated using cyclic voltammetry (CV), molecular emission cavity analysis (MECA) and ion-exchange chromatography (IEC). This biofilter was able to degrade SO2 up to 22281 mg m−3 by disproportionation reaction and the formation of S2− and SO42− with ≥99% efficiency. Designed biofilter was able to restart the initial performance at least after seven cycles if it was used at 14-day intervals. According to theoretical studies, the value of mean free energy (E) obtained using the Dubinin-Radushkevich isotherm model was 0.02 kJ mol−1, which is in the range expected for physical adsorption. Designed biofilter can be considered as a powerful tool to degrade SO2 in diverse urban and industrial centers.
中文翻译:
一种用于二氧化硫过滤和降解的新型全细胞生物催化剂。
在这项研究中,使用循环伏安法(CV),分子发射腔分析(MECA)和离子交换色谱法(IEC)研究了趋磁细菌与亚硫酸盐化合物的相互作用及其降解SO 2的潜力。该生物滤池能够通过歧化反应以及形成S 2−和SO 4 2-的效率≥99%降解高达22281 mg m -3的SO 2。如果设计的生物滤池每隔14天使用一次,则至少可以在七个周期后重新开始其初始性能。根据理论研究,使用Dubinin-Radushkevich等温模型获得的平均自由能(E)值为0.02 kJ mol -1,该值在物理吸附的预期范围内。设计的生物过滤器可以被视为在各种城市和工业中心降解SO 2的有力工具。