Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/105256
Title: | Poly(β-cyclodextrin)-Activated Carbon Gel Composites for Removal of Pesticides from Water | Authors: | Utzeri, Gianluca Veríssimo, Luís Murtinho, Dina Pais, Alberto Perrin, F. Xavier Ziarelli, Fabio Iordache, Tanta-Verona Sarbu, Andrei Valente, Artur J. M. |
Keywords: | β-cyclodextrin; activated carbon; hydrogels; pesticides; remediation | Issue Date: | 6-Mar-2021 | Publisher: | MDPI | Project: | UID/QUI/00313/2020 | Serial title, monograph or event: | Molecules | Volume: | 26 | Issue: | 5 | Abstract: | Pesticides are widely used in agriculture to increase and protect crop production. A substantial percentage of the active substances applied is retained in the soil or flows into water courses, constituting a very relevant environmental problem. There are several methods for the removal of pesticides from soils and water; however, their efficiency is still a challenge. An alternative to current methods relies on the use of effective adsorbents in removing pesticides which are, simultaneously, capable of releasing pesticides into the soil when needed. This reduces costs related to their application and waste treatments and, thus, overall environmental costs. In this paper, we describe the synthesis and preparation of activated carbon-containing poly(β-cyclodextrin) composites. The composites were characterized by different techniques and their ability to absorb pesticides was assessed by using two active substances: cymoxanil and imidacloprid. Composites with 5 and 10 wt% of activated carbon showed very good stability, high removal efficiencies (>75%) and pesticide sorption capacity up to ca. 50 mg g-1. The effect of additives (NaCl and urea) was also evaluated. The composites were able to release around 30% of the initial sorbed amount of pesticide without losing the capacity to keep the maximum removal efficiency in sorption/desorption cycles. | URI: | https://hdl.handle.net/10316/105256 | ISSN: | 1420-3049 | DOI: | 10.3390/molecules26051426 | Rights: | openAccess |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Polycyclodextrinactivated-carbon-gel-composites-for-removal-of-pesticides-from-waterMolecules.pdf | 2.53 MB | Adobe PDF | View/Open |
SCOPUSTM
Citations
23
checked on Oct 14, 2024
WEB OF SCIENCETM
Citations
21
checked on Oct 2, 2024
Page view(s)
115
checked on Oct 15, 2024
Download(s)
34
checked on Oct 15, 2024
Google ScholarTM
Check
Altmetric
Altmetric
This item is licensed under a Creative Commons License