{"title":"环境友好型醋酸纤维素水凝胶珠用于固相萃取水中毒死蜱农药","authors":"Majakkar Nishitha, Badiadka Narayana, Balladka Kunhanna Sarojini, Arun Krishna Kodoth","doi":"10.1007/s11270-024-07601-8","DOIUrl":null,"url":null,"abstract":"<div><p>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<sup>−1</sup> was attained at pH 7.3 and 480 min with a maximum adsorption capacity of 357.14 mgg<sup>−1</sup>. 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 <b>2.</b> This was also evidenced by the presence of an absorption band due to -P = S (699 cm<sup>−1</sup>) in the CP adsorbed CAB (CPCAB). Further, the desorption occurred at pH 1.3 by the acid hydrolysis of <b>2</b> with 99% recovery up to three cycles.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 1","pages":""},"PeriodicalIF":3.8000,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Environmentally Benign Cellulose Acetate Hydrogel Beads for Solid Phase Extraction of Chlorpyrifos Pesticide from Water\",\"authors\":\"Majakkar Nishitha, Badiadka Narayana, Balladka Kunhanna Sarojini, Arun Krishna Kodoth\",\"doi\":\"10.1007/s11270-024-07601-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>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<sup>−1</sup> was attained at pH 7.3 and 480 min with a maximum adsorption capacity of 357.14 mgg<sup>−1</sup>. 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 <b>2.</b> This was also evidenced by the presence of an absorption band due to -P = S (699 cm<sup>−1</sup>) in the CP adsorbed CAB (CPCAB). Further, the desorption occurred at pH 1.3 by the acid hydrolysis of <b>2</b> with 99% recovery up to three cycles.</p></div>\",\"PeriodicalId\":808,\"journal\":{\"name\":\"Water, Air, & Soil Pollution\",\"volume\":\"236 1\",\"pages\":\"\"},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2024-12-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Water, Air, & Soil Pollution\",\"FirstCategoryId\":\"6\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11270-024-07601-8\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water, Air, & Soil Pollution","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s11270-024-07601-8","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
摘要
以醋酸纤维素(CA)水溶液为原料,在微波照射下,用交联聚乙二醇滴下法制备了新型醋酸纤维素水凝胶珠,用于吸附水中毒死蜱(CP)。经TGA、FESEM和XRD分析证实,所制得的水凝胶珠具有半晶性和热稳定性。在pH 7.3、480 min条件下,溶胀率最高可达250 gg−1,吸附量最高可达357.14 mg−1。吸附过程符合拟二级动力学和Langmuir等温线,回归系数分别为0.9924和0.9921,主要为化学吸附过程和物理吸附过程。化学吸附发生在醋酸纤维素-聚乙二醇水凝胶珠(CAB)的羟基亲核攻击CP的- p = S上,排出3,5,6-三氯吡啶醇(TCP)形成2。由于-P = S (699 cm−1)在CP吸附的CAB (CPCAB)中存在一个吸收带,也证明了这一点。此外,在pH为1.3时,通过2的酸水解进行解吸,三次循环回收率达99%。
Environmentally Benign Cellulose Acetate Hydrogel Beads for Solid Phase Extraction of Chlorpyrifos Pesticide from Water
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.
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.
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Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.