Managing dissolved methane gas in anaerobic effluents using microbial resource management-based strategies
Managing dissolved methane gas in anaerobic effluents using microbial resource management-based strategies
复制标题
利用基于微生物资源管理的策略管理厌氧流出物中的溶解甲烷气体
DOI：
10.1016/j.biortech.2019.121601
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发表时间：
2019-10-01
影响因子：
11.4
通讯作者：
Goel, Ramesh
中科院分区：
文献类型：
--
作者：
Gupta, Vedansh;Goel, Ramesh
这项研究报告了三种独立的基于微生物资源管理的策略来管理厌氧废水中溶解甲烷(D-CH4)气体的结果。在第一种方法中，固定化了一株好氧的甲基球菌壳甲藻。附着式好氧甲烷氧化反应器在水力停留时间为0.5h时，最高可达1.75kgCODm(-3)d(-1)。在第二种策略中，反硝化甲烷氧化菌(达摩)首先在实验室规模的间歇反应器中进行浓缩，使甲烷的最大氧化速率达到0.31 kg CODM(-3)d(-1)。在最后一种策略中，好氧氨氧化菌的混合群落被固定在海绵载体上，用于将D-CH4气体转化为有用的生物燃料甲醇，转化速度为0.73 kg CODM(-3)d(-1)相当于COD，甲醇产量为31.5g CODM(-3)d(-1)。以化学需氧量计算，甲醇的产生量可以反硝化近7 mg L-1的硝态氮。
This study reports the findings of three independent microbial resource management-based strategies to manage dissolved methane (D-CH4) gas in anaerobic effluents. In the first approach, an aerobic methanotroph Methylococcus capsulatus was immobilized. A maximum of 1.75 kg COD m(-3) d(-1) at a hydraulic retention time of 0.5 h was recorded in the attached growth aerobic methane oxidizing reactor. In the second strategy, denitrifying methane oxidizing organisms (DAMO) were first enriched in a lab-scale batch reactor which enabled a maximum methane oxidation rate of 0.31 kg CODm(-3) d(-1). In the last strategy, a mixed community of aerobic ammonia oxidizers was immobilized on sponge carriers and used to convert the D-CH4 gas into useful biofuel methanol at a rate of 0.73 kg CODm(-3) d(-1) equivalent of COD with a methanol production of 31.5 g CODm(-3) d(-1). On a COD basis, the amount of methanol generated could denitrify nearly 7 mg L-1 of NO3-N.