Copper doped Fe-N-C as an excellent Fenton-like catalyst for membrane fouling mitigation against natural organic matters at neutral pH

2022 ◽  
pp. 130368
Author(s):  
Liang Wang ◽  
Wenyu Wang ◽  
Nigel Graham ◽  
Muhammad Saboor Siddique ◽  
Hankun Yang ◽  
...  
Keyword(s):  
Membrane Fouling ◽  
Organic Matters ◽  
Neutral Ph ◽  
Fouling Mitigation ◽  
Natural Organic Matters

Identifying Membrane Foulants in Chemical Cleaning Solutions

2013 ◽  
Vol 726-731 ◽  
pp. 1872-1878 ◽  
Author(s):  
Jun Xia Liu ◽  
Bing Zhi Dong ◽  
Yun Ge Sheng ◽  
Ji Ping Wang
Keyword(s):  
Molecular Weight ◽  
Metal Ions ◽  
Membrane Fouling ◽  
Chemical Cleaning ◽  
Organic Matters ◽  
Main Metal ◽  
Acid Cleaning ◽  
Chemical Agents ◽  
Natural Organic Matters ◽  
Hydrophobic Acids

The main objective of this study was to investigate foulants in chemical cleaning solutions of membrane (CCSM). Sodium hydroxide (NaOH), sodium hypochlorite (NaOCl), hydrochloric acid (HCl) were used as chemical agents respectively. Hydrophobicity, molecular weight distribution and metal ions of foulants in CCSM were analyzed as the major characters for membrane fouling. Results reveal that alkali cleaning can remove both hydrophobic and hydrophilic fractions of natural organic matters (NOM), and acid cleaning mainly removes hydrophilic organic matters. Medium molecular weight of very hydrophobic acids (1-10 kDa) and different molecular weight of neutral hydrophilic acids (100-1000 Da & >300kDa) in NOM can lead to membrane irreversible fouling. Acid cleaning is relatively effective for the reduction of inorganic foulants. The main metal ions in acid cleaning solutions are K ,Ca, Al and Mn, which are responsible for membrane inorganic fouling.

Membrane fouling behaviors of ceramic hollow fiber microfiltration (MF) membranes by typical organic matters

2021 ◽  
pp. 118951
Author(s):  
Zhaoyu Bai ◽  
Ruijun Zhang ◽  
Songxue Wang ◽  
Shanshan Gao ◽  
Jiayu Tian
Keyword(s):  
Hollow Fiber ◽  
Membrane Fouling ◽  
Organic Matters

Natural organic matters removal efficiency by coagulation

2017 ◽  
Author(s):  
Mohd Sharizal Mohd Sapingi ◽  
Munirah Pishal ◽  
Mohamad Fared Murshed
Keyword(s):  
Removal Efficiency ◽  
Organic Matters ◽  
Natural Organic Matters

Development of polyaniline conductive membrane for electrically enhanced membrane fouling mitigation

2019 ◽  
Vol 570-571 ◽  
pp. 371-379 ◽  
Author(s):  
Kunpeng Wang ◽  
Lili Xu ◽  
Kuiling Li ◽  
Lie Liu ◽  
Yong Zhang ◽  
...  
Keyword(s):  
Membrane Fouling ◽  
Fouling Mitigation ◽  
Conductive Membrane ◽  
Electrically Enhanced
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