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Use of a Low‐Cost Biosorbent to Remove Pesticides from Wastewater
Author(s) -
Boudesocque Stéphanie,
Guillon Emmanuel,
Aplincourt Michel,
Martel Frédéric,
Noël Sandrine
Publication year - 2008
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.2134/jeq2007.0332
Subject(s) - wastewater , pesticide , environmental science , waste management , cost analysis , environmental engineering , chemistry , environmental chemistry , pulp and paper industry , engineering , agronomy , biology , reliability engineering
A lignocellulosic substrate (LS) obtained from our local agroindustry was used as a low‐cost and effective adsorbent for the removal of pesticides from wastewaters. The studied pesticides were terbumeton (N‐(1,1‐dimethyl)‐Nethyl‐6‐methoxy‐1,3,5‐triazine‐2,4‐diamine), desethyl terbumeton (N‐(1,1‐dimethylethyl)‐6‐methoxy‐1,3,5‐triazine‐2,4‐diamine), dimetomorph (4‐[3‐(4‐chlorophenyl)‐3‐(3,4‐dimethoxyphenyl)acryloyl]morpholine), and isoproturon (3‐(4‐isopropylphenyl)‐1,1‐dimethylurea). Batch and column experiments were conducted as a function of pH and pesticide concentration under laboratory and industrial conditions. The concentration range studied for the pesticides varied from 2 × 10 −7 to 3 × 10 −4 mol L −1 The influence of organic and inorganic pollutants was assessed by studying the retention of pesticide in the presence of copper(II) and a surfactant. These experiments indicated that LS is an efficient adsorbent toward the investigated pesticides and has little influence of the other pollutants. The kinetic adsorptions are fast, and the amounts of adsorbed pesticide varied from 1 to 8 g kg −1 of LS. These retention capacities show that LS can provide a simple, effective, and cheap method for removing pesticides from contaminated waters. Thus, this biomaterial may be useful for cleaning up polluted waters.