Abstract
A laboratory-scale investigation was performed to study arsenic (As (V)) removal by negatively charged GE-HL nanofiltration (NF) membrane in simulated drinking water. Effects of As (V) concentration (0–200 μg·L−1), pH, and co-ions and counter-ions were investigated. The NF membrane presented good stability, and the rejection rates exceeded 90%. The rejection rates of As (V) decreased with the increase of As (V) concentration, while it increased with the increase of pH (reached 96% at pH 6.75). Moreover, a negative relationship was observed between the co-existing ions of Cl−, Na+, SO 2−4 , and Ca2+ and the removal of As (V), in which bivalent ions presented more significant effects than monovalent ions.
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Wang, X., Liu, W., Li, D. et al. Arsenic (V) removal from groundwater by GE-HL nanofiltration membrane: effects of arsenic concentration, pH, and co-existing ions. Front. Environ. Sci. Eng. China 3, 428–433 (2009). https://doi.org/10.1007/s11783-009-0146-9
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DOI: https://doi.org/10.1007/s11783-009-0146-9