Macroscopic and microscopic characterizations of a cellulosic ultrafiltration (UF) membrane fouled by a humic acid cake deposit: First step for intensification of reverse osmosis (RO) pre-treatments

2007 ◽  
Vol 10 (9) ◽  
pp. 803-812 ◽  
Author(s):  
Anju Thekkedath ◽  
Wahib M. Naceur ◽  
Karima Kecili ◽  
Mohammed Sbai ◽  
Audrey Elana ◽  
...  
Keyword(s):  
Humic Acid ◽  
Reverse Osmosis

Humic Acid Fouling Mitigation by Antiscalant in Reverse Osmosis System

2010 ◽  
Vol 44 (13) ◽  
pp. 5153-5158 ◽  
Author(s):  
Qingfeng Yang ◽  
Yangqiao Liu ◽  
Yajuan Li
Keyword(s):  
Humic Acid ◽  
Reverse Osmosis ◽  
Fouling Mitigation

Implications of humic acid, inorganic carbon and speciation on fluoride retention mechanisms in nanofiltration and reverse osmosis

2017 ◽  
Vol 528 ◽  
pp. 82-94 ◽  
Author(s):  
Isaac Owusu-Agyeman ◽  
Azam Jeihanipour ◽  
Thomas Luxbacher ◽  
Andrea Iris Schäfer
Keyword(s):  
Humic Acid ◽  
Reverse Osmosis ◽  
Inorganic Carbon ◽  
Retention Mechanisms

scholarly journals The Effects of Humic Acid Fouling on the Performane of Polyamide Composite Reverse Osmosis Membranes

2016 ◽  
Vol 132 (8) ◽  
pp. 123-128
Author(s):  
Ryohei TANAKA ◽  
Yuya SAMU ◽  
Tasuma SUZUKI ◽  
Masakazu NIINAE ◽  
Lin LIN ◽  
...  
Keyword(s):  
Humic Acid ◽  
Reverse Osmosis ◽  
Reverse Osmosis Membranes

Removal of humic acid and chloroform from drinking water by using commercial nanofiltration and reverse osmosis membranes

2017 ◽  
Vol 59 ◽  
pp. 48-54 ◽  
Author(s):  
Ahmed Abdel-Karim ◽  
Tarek A. Gad-Allah ◽  
Mohamed I. Badawy ◽  
Ahmed S.G. Khalil ◽  
Mathias Ulbricht
Keyword(s):  
Drinking Water ◽  
Humic Acid ◽  
Reverse Osmosis ◽  
Reverse Osmosis Membranes

scholarly journals Removal characteristics of dissolved organic matter and membrane fouling in ultrafiltration and reverse osmosis membrane combine processes treating the secondary effluent of wastewater treatment plant

2020 ◽  
Author(s):  
Jianwei Liu ◽  
Mengfei Zhao ◽  
Cui Duan ◽  
Peng Yue ◽  
Tinggang Li
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Humic Acid ◽  
Fulvic Acid ◽  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Municipal Wastewater Treatment ◽  
Ro Membrane

Abstract The widespread implementation of municipal wastewater treatment and reuse must first ensure the safety of reused wastewater. The effluent of the municipal wastewater treatment plant contains a large amount of dissolved organic matter (DOM), which adversely affects the reuse of wastewater. In this study, the ultrafiltration (UF) + reverse osmosis (RO) process was used to treat the effluent from wastewater treatment plants. The relationship between the removal performance, membrane fouling of the UF + RO process, and DOM characteristics of influent were studied. The results show that DOM can be removed effectively by UF + RO process. The UF mainly removes DOM with a molecular weight greater than 10 kDa, while RO has a significant removal effect on low-molecular DOM, which mainly cause UF and RO membrane fouling. The UF + RO process has a significant removal rate on fulvic acid, humic acid, tyrosine, and tryptophan, and the order is humic acid > fulvic acid > tyrosine > tryptophan. Fulvic acid contributed the most to the UF membrane fouling, while fulvic acid and protein-like proteins contributed mainly to the RO membrane fouling.

Antiscaling efficacy of CaCO3and CaSO4on polyethylene glycol (PEG)-modified reverse osmosis membranes in the presence of humic acid: interplay of membrane surface properties and water chemistry

2017 ◽  
Vol 19 (7) ◽  
pp. 5647-5657 ◽  
Author(s):  
Jessica R. Ray ◽  
Whitney Wong ◽  
Young-Shin Jun
Keyword(s):  
Polyethylene Glycol ◽  
Humic Acid ◽  
Water Chemistry ◽  
Reverse Osmosis ◽  
Surface Properties ◽  
Membrane Surface ◽  
Reverse Osmosis Membrane ◽  
Membrane Surfaces ◽  
Colloidal Formation ◽  
Reverse Osmosis Membranes

A specific polyethylene glycol (PEG)–humic acid–SO42−interaction results in promoted CaSO4colloidal formation on PEG reverse osmosis membrane surfaces.

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