Abstract
The effect of sodium dodecylbenzenesulfonate (anionic surfactant) on removal of selected heavy metal ions such as copper(II), cobalt(II), zinc(II) and nickel(II) using Lewatit MonoPlus TP 220 were studied. The critical micellization of concentration in the system containing both heavy metal ions and the anionic surfactant was obtained (surface properties). The percentage removal of heavy metal ions in the system without the anionic surfactant was compared with that of heavy metal ions in the presence of the anionic surfactant of the concentration below (↓CMC) and above (↑CMC) (HCl—heavy metal ions—anionic surfactant systems). Moreover, Lewatit MonoPlus TP 220 was applied for the heavy metal ions removal from real wastewaters (used a pickling bath) originating from leaching of the heat-resistant nickel and cobalt alloys. The critical micellization of concentration values depends on the composition of solution, presence of hydrochloric acid and heavy metal ions. The presence of the surfactant improves slightly the removal efficiency of cobalt(II) and nickel(II) ions and deteriorates the zinc(II) removal efficiency. Lewatit MonoPlus TP 220 shows high affinity for copper(II) in the model and real wastewater solutions in the case of the systems without and with the anionic surfactant.
Highlights
Surfactants (Surface Active Agent) called amphiphilic compounds or tensides due to their specific structure and utility properties are widely used in industry, washing, laundry, cosmetics, pharmaceuticals, textiles, microelectronics, paints, polymers, as well as in food and paper industry, etc. (Atayi et al 2002; Kowalska 2009; Shah et al 2011)
The aim of the paper was to study the effects of the anionic surfactant on removal of selected heavy metal ions (copper(II), zinc(II), nickel(II) and cobalt(II)) from acidic solutions using the ion exchange resin Lewatit Mono Plus TP 220
Lewatit MonoPlus TP 220 was applied in heavy metal ions removal from acidic industrial wastewater, supplied by a company specializing in the utilization of industrial waste using the batch method
Summary
Surfactants (Surface Active Agent) called amphiphilic compounds or tensides due to their specific structure and utility properties (foaming, wetting, softening, antistatic, caking, emulsifying, adsorptive, solubilizing, thermal and chemical stability) are widely used in industry, washing, laundry, cosmetics, pharmaceuticals, textiles, microelectronics, paints, polymers, as well as in food and paper industry, etc. (Atayi et al 2002; Kowalska 2009; Shah et al 2011). Taking into account harmful effects of surfactants on living organisms as well as the natural environment and their common application results in huge amounts of wastewaters production, activity in the systems of different compositions (surface properties), their removal as well as effects on removal efficiency of other components of wastewaters are very important. Due to this fact, the aim of the paper was to study the effects of the anionic surfactant on removal of selected heavy metal ions (copper(II), zinc(II), nickel(II) and cobalt(II)) from acidic solutions using the ion exchange resin Lewatit Mono Plus TP 220. The effectiveness of heavy metal ions removal in the presence of the surfactant of the concentration below (↓CMC) and above (↑CMC) expressed as the percentage removal (%R) was compared with %R obtained in the system without the surfactant
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