Optimization of Chemical Cleaning of Organic-Fouled Reverse Osmosis Membranes. Desalination and Water Purification Research and Development Program Report No. 141
(English)
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The effects of individual foulant and mixtures several types of foulants in the absence and presence of Ca2+ on the fouling of reverse osmosis (RO) membranes are investigated. Alginate, bovine serum albumin, Suwannee River natural organic matter, and octanoic acid are selected as model foulants. Sodium hydroxide, sodium chloride, disodium ethylenediaminetetraacetate, and sodium docecyl sulfate are used as cleaning agents. The effect of cleaning agent concentration on the reduction of the intermolecular adhesion force of organic foulants is investigated using atomic force microscopy, so as to investigate the chemical reactivity of the cleaning agent with the foulants. The effect of single and dual cleaning agents on the chemical cleaning of RO membranes fouled by waste water effluent is also explored.
Optimization of Chemical Cleaning of Organic-Fouled Reverse Osmosis Membranes. Desalination and Water Purification Research and Development Program Report No. 141