Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 121, Issue -, Pages 806-813Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2018.10.132
Keywords
Activated carbon; Pesticides; Rapid adsorption
Funding
- National Key Research and Development Program of China [2016YFD0201203]
- National Innovative Training Program for College Students of China
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Pesticides contamination of water has caused considerable concern due to the potential hazard to human health. For the first time, mesoporous activated carbon from starch (ACS) was applied to remove pesticides from water. ACS could remove 11 pesticides rapidly (shake five times). The adsorption rates of ACS (>80%) for the 11 pesticides were higher than those of other adsorbents, including commercial activated carbon (AC), graphitised carbon black (GCB), C18, and primary secondary amine adsorbent (PSA). The mechanisms of the adsorption process for pyraclostrobin were also investigated. The pseudo-second-order model could better describe the adsorption for pyraclostrobin (R-2 = 0.99950). Langmuir model gave the best fit for the isotherm data (R-2 = 0.99899). Our findings demonstrate that oxygen-containing functional groups, N atom and pi-bonding network of benzene promoted the adsorption. The adsorption efficiency of the ACS for 11 pesticides was still over 80% after five cycles. (C) 2018 Published by Elsevier B.V.
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