Viscose-Derived Activated Carbons Fibers as Highly Efficient Adsorbents for Dimethoate Removal from Water.

Ana Jocić,Tamara Lazarević-Pašti,Christoph Unterweger,Igor A Pašti,Christian Fürst,Danica Bajuk-Bogdanović,Stefan Breitenbach

doi:10.3390/molecules27051477

Abstract

Extensive use of pesticides resulting in their accumulation in the environment presents a hazard for their non-target species, including humans. Hence, efficient remediation strategies are needed, and, in this sense, adsorption is seen as the most straightforward approach. We have studied activated carbon fibers (ACFs) derived from viscose fibers impregnated with diammonium hydrogen phosphate (DAHP). By changing the amount of DAHP in the impregnation step, the chemical composition and textural properties of ACFs are effectively tuned, affecting their performance for dimethoate removal from water. The prepared ACFs effectively reduced the toxicity of treated water samples, both deionized water solutions and spiked tap water samples, under batch conditions and in dynamic filtration experiments. Using the results of physicochemical characterization and dimethoate adsorption measurements, multiple linear regression models were made to reliably predict performance towards dimethoate removal from water. These models can be used to quickly screen among larger sets of possible adsorbents and guide the development of novel, highly efficient adsorbents for dimethoate removal from water.

Highlights

Pesticides are widely used to improve agricultural production and control various pests and disease vectors in public health
We have studied activated carbon fibers (ACFs) derived from viscose fibers impregnated with diammonium hydrogen phosphate (DAHP)
A series of ACFs was produced upon impregnating viscose fibers with different amounts of DAHP

Summary

Introduction

Pesticides are widely used to improve agricultural production and control various pests and disease vectors in public health Despite their many benefits, excessive or improper application of pesticides in agricultural activity leads to the pollution of soils and aqueous environments, which may produce a range of hazardous effects to non-target species such as humans and animals [1]. The increased application of OPs leads to the pollution of land and water ecosystems and is a serious threat to human health due to the toxic nature of these compounds [2]. Their primary toxicity is associated with the irreversible inhibition of acetylcholinesterase enzyme (AChE) in the nervous system and blood, resulting in acetylcholine accumulation and, disrupted neurotransmission [3]

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Results

Conclusion