2, 4-dichlorophenoxyacetic acid (2, 4-D) micropollutant herbicide removing from water using granular and powdered activated carbons: a comparison applied for water treatment and health safety. Issue 4 (2nd April 2020)

• Record Type: Journal Article
• Authors: Coelho, Edumar Ramos Cabral; Brito, Gilberto Maia de; Frasson Loureiro, Lorena; Schettino, Miguel Angelo; Freitas, Jair Carlos Checon de
• Is Part Of: Journal of environmental science and health. Volume 55:Issue 4(2020)
• Page Start: 361
• Page End: 375
• Publication Date: 2020-04-02
• Subjects: Porous materials -- high performance 2, 4-D removal -- emerging contaminant -- adsorption isotherms -- Langmuir and Freundlich isotherms -- 13C NMR -- DRX and FTIR characterization -- π-π stacking -- molecular interaction; Pesticides -- Environmental aspects -- Periodicals; Food contamination -- Periodicals; Agricultural wastes -- Environmental aspects -- Periodicals; Ecology -- periodicals; Pesticides -- toxicity -- periodicals; Food Contamination -- periodicals; 363.73
• DOI: 10.1080/03601234.2019.1705113
• Languages: English
• ISSNs: 0360-1234

Abstract

Abstract: Activated carbons are well-known porous materials as an effective adsorbent used for the removal of emerging contaminants, such as herbicides, which are increasingly present in water bodies. Most water treatment plants, specially in Brazil, are unable to completely remove such contaminants by the conventional process and advanced treatment using activated carbons is required. The aim of this paper was to verify the influence of the activated carbons granulometry and specific surface area on the 2, 4-dichlorophenoxyacetic acid (2, 4-D) herbicide removal efficiency using distilled-deionized water and filtered water collected from a conventional Water Treatment Plant. Commercial activated carbons samples used in this work were obtained from two different manufacturers. Activated carbons were analyzed by the specific surface area, pore size and volume distribution, nuclear magnetic resonance, infrared and x-ray spectroscopy, moisture, volatile matter and ash contents. Batch adsorption isotherms experiments were used and performed by Langmuir and Freundlich models. Granular and powdered activated carbons removed over 99% of 2, 4-D in distilled water and near to 99% using filtered water. The activated carbons evaluated in this work presented high performance and played a key role in water treatment by removing 2, 4-D herbicide, ensuring the protection of human health and the ecosystem.