文档介绍：Selective Removal of Naphthalene from Non-ionic
and Anionic Surfactants Using Activated Carbon
Daniel . Tsang Boey H. Zhang
Department of Civil and Natural Resources Engineering Department of Civil and Natural Resources Engineering
University of Canterbury University of Canterbury
Christchurch, New Zealand Christchurch, New Zealand
daniel.******@
Abstract—Surfactants have been widely used for extracting minimum concentration at which this occurs is called the
pounds from soils into aqueous phase. critical micelle concentration (CMC) (Fig. 1) [1-5].
Non-ionic surfactants such as Triton X-100 and anionic
surfactants such as SDS (sodium dodecyl sulphate) have been of Figure 1. Schematic diagram of the variation of surface tension, interfacial
particular interest because of their high solubilizing ability and
low toxicity. However, the resulting wastewater that contains
both surfactant anic contaminants should be treated and
surfactants should be recovered as much as possible in view of
residual effects and economic considerations. This paper
investigated the use of activated carbon for surfactant recovery
in wastewater treatment. Selective adsorption of naphthalene (the
simplest form of polyaromatic hydrocarbons) from Triton X-100
and SDS were observed at relatively low surfactant
concentrations (., slight