Study on the Mechanism of Humic Acid on Ultrafiltration Membrane


Study on the Mechanism of Humic Acid on Ultrafiltration Membrane


Yuewen Sun, Anchao Geng
College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.


American Journal of Basic and Applied Sciences

In view of the problem of clogging of ultrafiltration membrane in ultrafiltration process, the contamination mechanism of humic acid solution on ultrafiltration membrane was studied in depth. Through the ultrafiltration test of different concentrations of humic acid solution, it was found that humic acid can cause pollution to the ultrafiltration membrane, and the higher the humic acid concentration, the more serious the membrane contamination. The introduction of calcium carbonate particles can delay the progress of ultrafiltration membrane fouling in the initial stage of ultrafiltration, but as the ultrafiltration time increases, the membrane fouling rate increases rapidly. The kaolin particles can aggravate the contamination of the ultrafiltration membrane by humic acid, and the contamination can be washed away by the aqueous sodium hydroxide solution. The introduction of calcium ions can significantly aggravate membrane fouling and polymerize humic acid molecular chains. Sodium hydroxide and sodium hypochlorite alkali solution can effectively remove the humic acid pollution on the ultrafiltration membrane, wherein the sodium hydroxide solution has better cleaning effect, and the calcium carbonate-containing pollutant can be washed with a citric acid solution.


Keywords:  Ultrafiltration membrane; Humic acid; Membrane fouling; Calcium ion; Kaolin.

Free Full-text PDF


How to cite this article:
Yuewen Sun, Anchao Geng. Study on the Mechanism of Humic Acid on Ultrafiltration Membrane. American Journal of Basic and Applied Sciences, 2019, 2:11. DOI: 10.28933/ajbas-2019-04-2007


References:

1. Gamage N P, Chellam S.Mechanisms of physically irreversible fouling during surface water microfiltration and mitigation by aluminum electro-flotation pretreatment[J].Environ Sci Technol, 20 14, 48 (2) :1148-1157.
2. Kim H C, Dempsey B A.Membrane fouling due to alginate, SMP, Ef OM, humic acid, and NOM[J].J Membr Sci, 2013, 428 (1) :190-197.
3. Zhang X R, Minear R A.Characterization of high molecular weight disinfection byproducts resulting from chlorination of aquatic humic sub-stances[J].Environmental Science&Technology, 2002, 36 (19) :4033-4038.
4. [4]Zhang X R, Minear R A.Formation, adsorption and separation of high molecular weight disinfection byproducts resulting from chlorination of aquatic humic substances[J].Water Research, 200 6, 40 (2) :221-230.
5. Jermann D, Pronk W, Meylan S, et al.Interplay of different NOM fouling mechanisms during ultra-filtration for drinking water production[J].Water Research, 2007, 41 (8) :1713-1722.
6. Ma B W, Yu W Z, Liu H J, et al.Effect of low dos-age of coagulant on the ultrafiltration membrane performance in feedwater treatment[J].Water Research, 2014, 51:277-283.
7. Ben Sasson M, Adin A.Fouling mitigation by iron-based electroflocculation in microfiltration:mechanisms and energy minimization[J].Water Research, 2010, 44 (13) :3973-3981.
8. Choi Y H, Kim H S, Kweon J H, et al.Role of hydrophobic natural organic matter flocs on the fouling in coagulation membrane processes[J].Separation and Purification Technology, 2008,62 (3) :529-534.
9. Wang L, Wang X D.Study of membrane morphology by microscopic image analysis and membrane structure parameter model[J].Journal of Membrane Science, 2006, 283 (1-2) :109-115.
10. Li Sheng, Heijman S G J, Verberk J Q J C, et al. Fouling control mechanisms of demineralized water backwash:Reduction of charge screening and calcium bridging effects[J]. Water Research, 2011, 45 (19) :6289-6300.