文献类型：期刊文献

英文题名：Decreasing sulfide in sediment and promoting plant growth by plant-sediment microbial fuel cells with emerged plants

作者：Liu, Yiyang[1];Zhang, Haiqin[1];Lu, Zhihao[1];de Lourdes Mendoza, Maria[2];Ma, Jingxing[1];Cai, Lankun[1];Zhang, Lehua[1,3]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Super Polytech Sch Coast ESPOL, Dept Environm & Chem Sci DCQA, Guayaquil 090112, Ecuador;[3]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2019

卷号：17

期号：1

起止页码：13

外文期刊名：PADDY AND WATER ENVIRONMENT

收录：;EI(收录号：20184406013510);WOS:【SCI-EXPANDED(收录号:WOS:000457414700002)】；

基金：This work was supported by the National Natural Science Foundation of China (NSFC) (20906026) and the special fund of State Key Joint Laboratory of Environment Simulation and Pollution Control (18K10ESPCT). Authors thank Dr. Shengyong Zhai for her suggestions and comments.

语种：英文

外文关键词：Sediment microbial fuel cells; Sulfide; Sediment; Aquatic plants

摘要：Four plant-sediment microbial fuel cells (plant-SMFCs) with four plant species, Oryza sativa, Acorus calamus, Spathiphyllum petite and Chamaedorea elegans, were built to investigate sulfide concentrations, pH and oxidation-reduction potential (ORP) in the sediment as well as plant growth. Sulfide concentrations at 1 and 2cm depth of sediment in plant-SMFCs and their control reactors were 1.66 +/- 0.30, 9.29 +/- 3.46, 2.38 +/- 0.10 and 24.20 +/- 1.02molg(-1), respectively. The ORP in water and sediment of 1 and 2cm depth in plant-SMFCs was 106.0 +/- 7.7, -142 +/- 30 and -209 +/- 9mV, respectively. The ORP in the three control reactors was 119.0 +/- 11.5, -209 +/- 9 and -386 +/- 2mV, respectively. Harvest of O. sativa, A. calamus, Spathiphyllum petite and C. elegans was 0.218 +/- 0.009, 0.136 +/- 0.007, 0.127 +/- 0.007 and 0.340 +/- 0.007gDWg(-1)GW in the plant-SMFCs, while that of their control reactors was 0.179 +/- 0.011, 0.127 +/- 0.008, 0.102 +/- 0.007 and 0.318 +/- 0.006gDWg(-1)GW, respectively. The results showed that sulfide concentrations decreased in sediments of plant-SMFCs, while the ORPs in both the overlying water and sediments increased. Moreover, plant growth due to operating plant-SMFCs was promoted. Running plant-SMFCs abates the toxicity of sulfide to the emerged plants as well as decreases the sulfide emission in water-plant-sediment systems.