Removal of anionic surfactant from wastewater by alumina: a case study

被引：134

作者：

Adak, A ^{[1
]}

Bandyopadhyay, M ^{[1
]}

Pal, A ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Civil Engn, Kharagpur 721302, W Bengal, India

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2005年 / 254卷 / 1-3期

关键词：

alumina; anionic surfactant; equilibrium time; adsorption rate coefficient; adsorption capacity coefficient;

D O I：

10.1016/j.colsurfa.2004.12.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The adsorption characteristics of sodium dodecyl sulfate (SDS) on neutral alumina were studied in detail. Alumina was found to be an efficient adsorbent for SIDS and could be used for the removal of anionic surfactant (AS)from wastewater when it is present in high concentration (several thousand ppm). In the present work the actual laundry wastewater was treated by both batch and continuous mode. The initial AS concentration in wastewater was 8068 ppm. The optimum adsorbent dose and equilibrium time found were 120 g/l and I h, respectively. Under optimised conditions the removal efficiency was found to be 94%. The removal of SDS by alumina follows the pseudo-second order reaction kinetics. In column study the flow rate was maintained at 1.63 m(3)/m(2)/h. The breakthrough and exhaust time were found to be 48 and 86 min, respectively, using 10 cm column depth. Height of adsorption zone was found to be 5.5 cm and the rate at which the adsorption zone was moving through the bed was 9.42 cm/h. The percentage of the total column saturated at breakthrough was found 75.5%. The value of adsorption rate coefficient (K) and adsorption capacity coefficient (N) were obtained as 0.000824 l/(mg h) and 143460 mg/l, respectively. After exhaustion. aqueous NaOH could efficiently regenerate alumina. (C) 2004 Elsevier B.V All rights reserved.

引用

页码：165 / 171

页数：7

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