Fouling of reverse osmosis membrane by protein (BSA): Effects of pH, calcium, magnesium, ionic strength and temperature

Mo, H.; Tay, Kwee Guan; Ng, Henry

doi:10.1016/j.memsci.2008.02.002

Cited by 229 publications

(153 citation statements)

References 31 publications

Supporting

Mentioning

140

Contrasting

Unclassified

Order By: Relevance

“…Similar results have been reported in the literature and have been attributed to the electric double layer (EDL) compression (i.e., charge shielding effect) induced by the increasing solution ionic strength. 31,32 Nevertheless, EDL compression alone is not able to explain the highly saltidentity dependent ZP values at identical ionic strength (ZP 5 235.7 mV in 15 mM NaBr solution vs. 213.3 mV in 15 mM KCl solution). These results suggest that the ZP values of alginate in monovalent salt solutions may be governed by some specific interactions in addition to EDL compression.…”

Section: Resultsmentioning

confidence: 99%

Characteristics and fouling propensity of polysaccharides in the presence of different monovalent ions

Meng

Lin

et al. 2016

AIChE Journal

View full text Add to dashboard Cite

In this study the fouling behavior of alginate in the presence of monovalent ions (i.e., NaCl, KCl, CsCl, NaBr, and NaI) was explored. Results showed that alginate tended to be less negatively charged in the presence of monovalent ions. The cation ion identity had a more substantial impact on the zeta potentials of alginate solution than the anion ion identity, which was likely due to preferential attraction between alginate and cation ion. Nevertheless, significantly increased particle size was observed for alginate in 150 mM CsCl, possibly arising from the specific interaction between alginate and Cs 1. Membrane fouling was more severe for alginate in monovalent solutions, particularly at 150 mM ionic strength. The unified membrane fouling index was increased by cation and anion ions in the order of Naand Cl 2 > Br 2 > I 2 , respectively. Nevertheless, the addition of monovalent ions could promote the fouling reversibility.

show abstract

Section: Resultsmentioning

confidence: 99%

Characteristics and fouling propensity of polysaccharides in the presence of different monovalent ions

Meng

Lin

et al. 2016

AIChE Journal

View full text Add to dashboard Cite

show abstract

“…Now more and more studies have focused on two or more contaminants in the solution, and some different pollution mechanisms have really been found compared to only one single pollutant in feed water (Jermann et al, 2007;Katsoufidou et al, 2010;Zazouli et al, 2010). Humic acid (HA) and bovine serum albumin (BSA) are used as model contaminants for their widely application in many studies (Tang and Leckie, 2007;Mo et al, 2008;Listiarini et al, 2009;She et al, 2009;Huber et al, 2011;Wang and Tang, 2011).…”

Section: Introductionmentioning

confidence: 99%

Effect of low dosage of coagulant on the ultrafiltration membrane performance in feedwater treatment

Liu

et al. 2014

Water Research

View full text Add to dashboard Cite

Low dosageCritical dose Ultrafiltration Flux decline a b s t r a c t One of the critical issues for the widely application of ultrafiltration (UF) in water treatment is membrane fouling owning to the dissolved organic matter. The aim of the present study is to explore the effect of various particle sizes caused by low dosages of coagulant with dissolved organic matter on the UF membrane performance. Aluminum chloride was added to the synthetic water with the hydrophobic humic acid (HA), the hydrophilic bovine serum albumin (BSA) e a protein-and their 1:1 (mass ratio) mixture. The results showed that there was a critical dose of Al that could cause dramatic flux reduction by blocking the membrane pores after coagulating with HA/BSA. For HA or BSA, the critical dose of Al was relatively lower at pH 6.0 than that at pH 8.0. After coagulation, the flux decline caused by HA was slightly varied as a function of pH while that caused by BSA was greatly affected by pH. The flux decline caused by the 1:1 (mass ratio) HA/BSA mixture after coagulation was similar to that caused by HA after coagulation because BSA could be encapsulated by HA. In addition, the peak value of the molecular weight (MW) distribution of HA coagulated with Al was changed more drastically compared to that of BSA after filtration. ª

show abstract

“…1) were equipped with a rectangular cross-flow cell having a membrane area of 68 cm 2 . The membrane charge has been shown to become less negative (reduced zeta potential) when the temperature of the feed water increased [18]. Therefore, a cooling coil was submerged in the feed water tank to maintain the feed water temperature at a constant 20 ± 2°C.…”

Section: Methodsmentioning

confidence: 99%

Use of nanofiltration and reverse osmosis in reclaiming micro-filtered biologically treated sewage effluent for irrigation

et al. 2015

View full text Add to dashboard Cite

Nanofiltration (NF) pre-treatment reduced reverse osmosis (RO) membrane fouling.• Permeate blends of RO after NF treatment and NF only are suitable for irrigation.• NF or RO, alone removed most pharmaceuticals and personnel care products (PPCPs).• PPCPs removals by NF membranes were lower than those by RO membranes. a b s t r a c tMicro-filtered, biologically treated sewage effluent (BTSE) generally has high sodium adsorption ratio (SAR) and sodium (Na) and chloride (Cl) concentrations. Therefore it cannot be directly used for irrigating sensitive crops. A study was conducted on a micro-filtered BTSE from a Sydney water treatment plant to determine whether the BTSE can be treated using nanofiltration (NF) and reverse osmosis (RO) to bring these risk parameters within safety limits. The study showed that using NF and RO alone could not produce the required ratio of SAR. Furthermore, NF alone did not remove the necessary levels of Na and Cl ions while RO did. However, blending equal proportions of NF permeate and RO permeate obtained from a two stages hybrid treatment system consisting of NF followed by RO resulted in a product quality suitable for irrigation in terms of the above mentioned risk factors. Utilizing NF prior to RO reduced the RO membrane fouling as well. Both NF and RO removed most of the pharmaceutical and personal care products from the feed water and this may subsequently protect soil and ground water from potential hazards.

show abstract

Fouling of reverse osmosis membrane by protein (BSA): Effects of pH, calcium, magnesium, ionic strength and temperature

Cited by 229 publications

References 31 publications

Characteristics and fouling propensity of polysaccharides in the presence of different monovalent ions

Characteristics and fouling propensity of polysaccharides in the presence of different monovalent ions

Effect of low dosage of coagulant on the ultrafiltration membrane performance in feedwater treatment

Use of nanofiltration and reverse osmosis in reclaiming micro-filtered biologically treated sewage effluent for irrigation

Contact Info

Product

Resources

About