首页> 外文会议>2011 Membrane technology conference amp; exposition. >Effects of Membrane Surface Reconditioning by Organic Macromolecules on Gypsum Scaling of Forward Osmosis Membranes
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Effects of Membrane Surface Reconditioning by Organic Macromolecules on Gypsum Scaling of Forward Osmosis Membranes

机译:有机大分子对膜表面的修复作用对正渗透膜的石膏结垢的影响

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This study investigates how organic macromolecules may change the surface characteristics of membranes and further affect gypsum scaling in forward osmosis (FO) membrane processes. A commercial FO membrane made of cellulose triacetate (CA) is tested in this study. Three organic macromolecules, including sodium alginate, bovine serum albumin (BSA) and humic acid, are used as model organic compounds to recondition membrane surfaces. Gypsum scaling behavior on the reconditioned membrane is compared with that on the unmodified membrane. The results of this study demonstrate that organic macromolecules with different properties show different effects on gypsum scaling. The adsorption of alginate or humic acid on membrane surfaces results in accelerated gypsum scaling in FO processes, while the adsorption of BSA shows slightly inhibitory effects.
机译:这项研究调查了有机大分子如何改变膜的表面特性,并进一步影响正向渗透(FO)膜工艺中石膏的结垢。在这项研究中测试了由三乙酸纤维素(CA)制成的商用FO膜。三种有机大分子,包括海藻酸钠,牛血清白蛋白(BSA)和腐殖酸,被用作模型有机化合物来修复膜表面。将修复过的膜上的石膏结垢行为与未改性的膜上的石膏结垢行为进行比较。这项研究的结果表明,具有不同性质的有机大分子对石膏结垢的影响不同。藻酸盐或腐殖酸在膜表面的吸附导致石膏在FO过程中加速结垢,而BSA的吸附则显示出轻微的抑制作用。

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