Environmentally Benign Cellulose Acetate Hydrogel Beads for Solid Phase Extraction of Chlorpyrifos Pesticide from Water

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Water, Air, & Soil Pollution Pub Date : 2024-12-03 DOI:10.1007/s11270-024-07601-8

Majakkar Nishitha, Badiadka Narayana, Balladka Kunhanna Sarojini, Arun Krishna Kodoth

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Abstract

A new cellulose acetate hydrogel beads were fabricated by dropping method from an aqueous solution of cellulose acetate (CA) by crosslinking polyethylene glycol upon microwave irradiation for the adsorption of chlorpyrifos (CP) from water. The hydrogel beads formed were thermally stable and of semi-crystalline nature confirmed by TGA, FESEM and XRD analysis. The maximum swelling ratio of 250 gg⁻¹ was attained at pH 7.3 and 480 min with a maximum adsorption capacity of 357.14 mgg⁻¹. The adsorption process followed pseudo second-order kinetics and Langmuir isotherm with regression co-efficient values as 0.9924 and 0.9921 predominantly chemisorption process and physisorption as well. The chemisorption occurred by the nucleophilic attack of the hydroxyl group of cellulose acetate- polyethylene glycol hydrogel beads (CAB) on -P = S of CP expelling 3,5,6-trichloropyridinol (TCP) forming 2. This was also evidenced by the presence of an absorption band due to -P = S (699 cm⁻¹) in the CP adsorbed CAB (CPCAB). Further, the desorption occurred at pH 1.3 by the acid hydrolysis of 2 with 99% recovery up to three cycles.

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.