Understanding Activation Effects on Low-Temperature Biochar for Optimization of Herbicide Sorption
16 páginas.- 6 figuras.- 2 tablas.- 50 referencias
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Multidisciplinary Digital Publishing Institute
2019-09-27
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Subjects: | Activated charcoal, Aging, Pesticides, |
Online Access: | http://hdl.handle.net/10261/191824 http://dx.doi.org/10.13039/501100010198 http://dx.doi.org/10.13039/501100011033 |
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dig-irnas-es-10261-1918242020-09-30T08:00:59Z Understanding Activation Effects on Low-Temperature Biochar for Optimization of Herbicide Sorption Gámiz, B. Hall, K. E. Spokas, K. A. Cox, L. Agencia Estatal de Investigación (España) Ministerio de Economía, Industria y Competitividad (España) Ministerio de Ciencia, Innovación y Universidades (España) Gámiz, B. [0000-0002-7244-778X] Spokas, K. A. [0000-0002-5049-5959] Cox, L. [0000-0003-2113-4780] Activated charcoal Aging Pesticides 16 páginas.- 6 figuras.- 2 tablas.- 50 referencias Activation treatments are often used as a means of increasing a biochar’s sorption capacity for agrochemical compounds but can also provide valuable insight into sorption mechanisms. This work investigates the effects of H2O2 activation on a low-temperature (350 °C) grape wood biochar, evaluates subsequent changes to the removal efficiency (RE) of cyhalofop and clomazone, and elucidates potential sorption mechanisms. Activation by H2O2 decreased the biochar pH, ash content, and C content. Additionally, the biochar O content and surface area increased following activation, and Fourier transform infrared spectroscopy (FTIR) data suggested a slight increase in surface O groups and a decrease in aliphatic C. Cyhalofop RE significantly increased following activation, while clomazone RE was unchanged. The increased sorption of cyhalofop was attributed to pH effects and charge-based interactions with biochar O moieties. Results from this study suggest that H2O2 activation treatments on low-temperature biochars may improve the removal of organic acid herbicides but are of little value in optimizing the removal of polar, non-ionizable herbicides. The Spanish Ministry of Science, Innovation and Universities (MICINN Project AGL2016-77821-R). Peer reviewed 2019-09-30T07:33:57Z 2019-09-30T07:33:57Z 2019-09-27 artículo http://purl.org/coar/resource_type/c_6501 Agronomy 9(10): 588 (2019) http://hdl.handle.net/10261/191824 10.3390/agronomy9100588 2073-4395 http://dx.doi.org/10.13039/501100010198 http://dx.doi.org/10.13039/501100011033 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2016-77821-R Publisher's version http://dx.doi.org/10.3390/agronomy9100588 Sí open Multidisciplinary Digital Publishing Institute |
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Activated charcoal Aging Pesticides Activated charcoal Aging Pesticides |
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Activated charcoal Aging Pesticides Activated charcoal Aging Pesticides Gámiz, B. Hall, K. E. Spokas, K. A. Cox, L. Understanding Activation Effects on Low-Temperature Biochar for Optimization of Herbicide Sorption |
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16 páginas.- 6 figuras.- 2 tablas.- 50 referencias |
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Agencia Estatal de Investigación (España) |
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Agencia Estatal de Investigación (España) Gámiz, B. Hall, K. E. Spokas, K. A. Cox, L. |
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Activated charcoal Aging Pesticides |
author |
Gámiz, B. Hall, K. E. Spokas, K. A. Cox, L. |
author_sort |
Gámiz, B. |
title |
Understanding Activation Effects on Low-Temperature Biochar for Optimization of Herbicide Sorption |
title_short |
Understanding Activation Effects on Low-Temperature Biochar for Optimization of Herbicide Sorption |
title_full |
Understanding Activation Effects on Low-Temperature Biochar for Optimization of Herbicide Sorption |
title_fullStr |
Understanding Activation Effects on Low-Temperature Biochar for Optimization of Herbicide Sorption |
title_full_unstemmed |
Understanding Activation Effects on Low-Temperature Biochar for Optimization of Herbicide Sorption |
title_sort |
understanding activation effects on low-temperature biochar for optimization of herbicide sorption |
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Multidisciplinary Digital Publishing Institute |
publishDate |
2019-09-27 |
url |
http://hdl.handle.net/10261/191824 http://dx.doi.org/10.13039/501100010198 http://dx.doi.org/10.13039/501100011033 |
work_keys_str_mv |
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