Simultaneous removal of nonionic surfactant and heavy metal(II)

Screening long-time plating effluent qualities by sorbent sorption with XRF analysis

“…The presence of organic matters like chelating agents and surfactants may inhibit metal sorption onto chitosan [4,[8][9][10] and the high metal concentrations in effluents may not be long enough to reach metal sorption equilibrium onto chitosan. Therefore, the actual highest metal concentrations in effluents should be higher than the long-time metal concentrations estimated based on sorbed metal concentrations on sorbents.…”

“…However, the S day0-2 and S day0-3 of Ni were slightly lower than their corresponding oneday sorbed concentrations (S day1-2 and S day2-3 ). It is possible that high concentrations of organic matter like chelating agent and surfactants might have interacted with the sorption site of chitosan and thus retarded the Ni sorption onto chitosan [8,9].…”