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Adsorption

Simultaneously efficient adsorption and photocatalytic degradation of sodium dodecyl sulfate surfactant by one-pot synthesized TiO2/layered double hydroxide materials

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Pages 1095-1105 | Received 10 May 2018, Accepted 19 Sep 2018, Published online: 27 Sep 2018
 

ABSTRACT

The large amount of surfactants discharge into wastewater are harmful for both terrestrial and aquatic life; in fact the removal of surfactants from wastewater becomes necessary. The present study is focused on to the removal of sodium dodecyl sulphate surfactant (SDS) by adsorption and photocatalytic degradation using Zn(2)Al-LDH and TiO2/Zn(2)Al-LDH materials synthesized by co-precipitation. The experimental adsorption data obtained were evaluated using Langmuir Freundlich and Temkin isotherms models. The photocatalytic degradation activities of SDS at different concentration in the range of (10−100 mg/L) over Zn(2)Al-LDH and TiO2/Zn(2)Al-LDH follows the pseudo first-order kinetics in accordance with the Langmuir Hinshelwood model. The results indicated that TiO2(3.6)/Zn(2)Al-LDH show the highest photocatalytic activity compared to Zn(2)Al-LDH sample.

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