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Removal of (2,4-Dichlorophenoxy)acetic Acid from Aqueous Solutions Using Low-cost Sorbents

Despite reducing the consumption of the pesticide (2,4-dichlorophenoxy)acetic acid (2,4-D), it can still be occasionally found in natural waters. The most effective method for its removal is adsorption on a solid surface using carbonaceous sorbents; however, these sorbents are considered highly pric...

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Published in:Air, soil and water research soil and water research, 2015-01, Vol.8
Main Authors: Olga D. Arefieva, Lyudmila A. Zemnukhova, Natalya P. Morgun, Viacheslav G. Rybin, Michael A. Tsvetnov, Anastasia A. Kovshun, Alexander E. Panasenko
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container_title Air, soil and water research
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creator Olga D. Arefieva
Lyudmila A. Zemnukhova
Natalya P. Morgun
Viacheslav G. Rybin
Michael A. Tsvetnov
Anastasia A. Kovshun
Alexander E. Panasenko
description Despite reducing the consumption of the pesticide (2,4-dichlorophenoxy)acetic acid (2,4-D), it can still be occasionally found in natural waters. The most effective method for its removal is adsorption on a solid surface using carbonaceous sorbents; however, these sorbents are considered highly priced. Therefore, diverse waste products have been increasingly used in recent years. In this study, the sorption possibility of 2,4-D from aqueous solutions with low concentration (1 μg L −1 ) of carbon- and silicon-containing sorbents of different nature was investigated. It was observed that precipitated silica from rice husk could be used for sorption posttreatment of 2,4-D. There was almost a complete removal of the pesticide with the carbon sorbent by “Sibunit”. Mesoporous sorbents derived from rice husk and straw showed a sorption efficiency of 23%-35%, indicating their use for treatment of natural waters.
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title Removal of (2,4-Dichlorophenoxy)acetic Acid from Aqueous Solutions Using Low-cost Sorbents
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