Electroosmotic pump: Rate controlling mechanism for unusually fast electroremediation kinetics of Cr(VI) in basic Kanpur soil

摘要: Abstract Electroremediation of Cr(VI) from a wet-sieved, basic (pH = 10.5) Kanpur soil showed unusually fast kinetics. 75% was removed in 40 h, contrast to 34% kaolin 144 h. Moreover, published studies, the predominant transport mechanism electroosmosis and not electromigration. The high kinetics electroremediation has been attributed formation an electroosmotic pump near anodic end soil. buffering capacity rate generation H+ anode chamber appear be dominant factors for pump. In addition maintaining flow rate, also increases degree saturation initial period itself, thereby increasing effective cross-sectional area removal Cr(VI). This study shows that depending on nature soil, acid–base neutralisation could either enhance or retard