Chemical-free cleaning of fouled reverse osmosis (RO) membranes derived from bis(triethoxysilyl)ethane (BTESE)
作者： Hiroki Nagasawa , Masakoto Kanezashi , Toshinori Tsuru , Suhaina M. Ibrahim
DOI: 10.1016/J.MEMSCI.2020.117919
关键词: Membrane 、 Chemistry 、 Electrolyte 、 Chemical engineering 、 Ammonium bromide 、 Sodium dodecyl sulfate 、 Reverse osmosis 、 Fouling 、 Chlorine 、 Thermal stability
摘要: Abstract The aim of this work was to study the fouling and cleaning behavior bis(triethoxysilyl)ethane (BTESE)-derived organosilica membranes, which is a new class RO membranes that feature chlorine tolerance thermal stability. foulants used in included bovine serum albumin (BSA) sodium alginate (SA), are typical examples effluent organic matter (EOM). Sodium dodecyl sulfate (SDS) dodecyltrimethyl ammonium bromide (DTAB) surfactants served as industrial waste. With EOM foulants, BSA occurred at pH approximated its iso-electric point (IEP), became more severe with addition electrolytes into SA solution. In both cases, however, fouled BTESE membrane recovered use deionized water (DIW). pronounced presence DTAB by comparison SDS surfactants. Surprisingly, all tests, within 30 min without need chemical agents, integrity applying temperature least 80 °C.
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