The use of a self-generated current in a coupled MFC-AnMBR system to alleviate membrane fouling

膜污染 化学 多糖 化学工程 阳极 结垢 胞外聚合物 微生物燃料电池 色谱法 生物反应器 电极 细菌 生物膜 有机化学 生物化学 生物 遗传学 工程类 物理化学
作者
Yanqing Liu,Xian Chen,Jingran Zhang,Zhou Fang,Haochi Zhang,Zimin Wei,Xianning Li
出处
期刊:Chemical Engineering Journal [Elsevier BV]
卷期号:442: 136090-136090 被引量:7
标识
DOI:10.1016/j.cej.2022.136090
摘要

In this study, we developed a coupled microbial fuel cell-anaerobic membrane bioreactor (MFC-AnMBR) system to degrade and remove membrane foulants, rather than preventing foulants from reaching the membrane surface through electrostatic repulsion. The MFC-AnMBR system consists of a conductive membrane as the MFC anode and an MBR filter membrane. The operating time of an experimental group with a 0.38-mA current was extended to 89 days longer than that of a control group (no cleaning during the operating period). Fourier-transform infrared spectroscopy indicated that the main membrane foulants were polysaccharides, proteins, and lipids. The concentrations of polysaccharides and proteins were significantly lower in the experimental group than in the control group. In confocal laser scanning microscopy, membrane surface proteins, α-polysaccharides, and β-polysaccharides decreased in the experimental group by 45.34%, 57.19%, and 26.46% compared to the control group. Three-dimensional excitation–emission matrix fluorescence spectroscopy and molecular weight (MW) analysis revealed that foulants deposited on the anode film surface were degraded into substances with low MW more effectively in the experimental group than in the control group. Two-dimensional heterogeneous correlation spectroscopy and high-throughput sequencing revealed that protein-like substances were degraded in both the control and experimental groups, but degradation of polysaccharide-like substances was more efficient in the experimental group. The degradation of polysaccharide-like and protein-like substances can be attributed to bacteria involved in anaerobic fermentation and electrogenic bacteria. Therefore, in the presence of electrons, polysaccharide-like substances with high MW can be converted into hydroxy-containing compounds with low MW, which are more readily degraded and utilized by microorganisms, thereby preventing membrane fouling.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
1秒前
Sun完成签到,获得积分10
1秒前
MADKAI发布了新的文献求助10
1秒前
1秒前
独特白枫完成签到,获得积分10
2秒前
HANK2024发布了新的文献求助10
2秒前
善学以致用应助ZS采纳,获得10
2秒前
2秒前
斯文败类应助NMZN采纳,获得10
2秒前
szn关注了科研通微信公众号
3秒前
李爱国应助Kevin采纳,获得10
4秒前
4秒前
drimary发布了新的文献求助10
4秒前
5秒前
小马甲应助Young采纳,获得10
5秒前
zhaoyali完成签到,获得积分20
5秒前
明哲派发布了新的文献求助30
5秒前
7秒前
MADKAI发布了新的文献求助10
7秒前
在水一方应助Joff_W采纳,获得30
7秒前
7秒前
yang发布了新的文献求助20
8秒前
荷兰香猪发布了新的文献求助10
8秒前
苹果笑寒发布了新的文献求助10
9秒前
9秒前
二喵完成签到 ,获得积分10
10秒前
高兴藏花完成签到 ,获得积分20
10秒前
余小鱼完成签到,获得积分10
10秒前
zhaoyali发布了新的文献求助10
11秒前
轻松的璐啦啦完成签到 ,获得积分10
11秒前
11秒前
11秒前
11秒前
11秒前
陈茜应助勤劳小海豚采纳,获得10
12秒前
归尘发布了新的文献求助10
12秒前
12秒前
瑶瑶酱完成签到,获得积分10
12秒前
刘浩然发布了新的文献求助10
12秒前
rtcpu完成签到,获得积分10
12秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 360
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3971125
求助须知:如何正确求助?哪些是违规求助? 3515824
关于积分的说明 11179811
捐赠科研通 3250971
什么是DOI,文献DOI怎么找? 1795610
邀请新用户注册赠送积分活动 875897
科研通“疑难数据库(出版商)”最低求助积分说明 805207