Jia Hui Ong , Zheng Wang , Chi Cheng Chong , Xiao Hu , Rong Xu
{"title":"从废物到资源:将纺织废料转化为多孔碳吸附剂,用于铵的吸附","authors":"Jia Hui Ong , Zheng Wang , Chi Cheng Chong , Xiao Hu , Rong Xu","doi":"10.1016/j.seppur.2025.134364","DOIUrl":null,"url":null,"abstract":"<div><div>Ammonia pollution in wastewater from aquaculture poses a significant threat to water quality and aquatic ecosystems. Conventional ammonia removal methods can be costly and inefficient, driving the need for more sustainable and affordable alternatives. In this study, post-consumer textile waste was converted to carbon adsorbent via a facile process under mild conditions involving pre-oxidation at 150 °C, pyrolysis at 400 °C in limited air, and modification with dilute sodium hydroxide (NaOH) solution (0.05 M). The combined approach leads to favorable textural properties and surface chemistry of the resultant carbon adsorbent for ammonium adsorption. The optimal adsorbent features a maximum adsorption capacity of 25.3 mg g<sup>−1</sup>, and fast adsorption kinetics with 90 % of equilibrium adsorption capacity achieved within 5 min, mainly via electrostatic adsorption and ion exchange. The spent adsorbent can be easily regenerated using 0.1 M sodium chloride (NaCl) solution, with the adsorption capacity dropped only 9 % performance after five cycles. This study offers a potential solution for wastewater treatment by using low-cost carbon adsorbents converted from waste materials, and contributes to circular economy and sustainability.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"377 ","pages":"Article 134364"},"PeriodicalIF":9.0000,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"From waste to resource: repurposing textile waste to porous carbon adsorbent for ammonium adsorption\",\"authors\":\"Jia Hui Ong , Zheng Wang , Chi Cheng Chong , Xiao Hu , Rong Xu\",\"doi\":\"10.1016/j.seppur.2025.134364\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Ammonia pollution in wastewater from aquaculture poses a significant threat to water quality and aquatic ecosystems. Conventional ammonia removal methods can be costly and inefficient, driving the need for more sustainable and affordable alternatives. In this study, post-consumer textile waste was converted to carbon adsorbent via a facile process under mild conditions involving pre-oxidation at 150 °C, pyrolysis at 400 °C in limited air, and modification with dilute sodium hydroxide (NaOH) solution (0.05 M). The combined approach leads to favorable textural properties and surface chemistry of the resultant carbon adsorbent for ammonium adsorption. The optimal adsorbent features a maximum adsorption capacity of 25.3 mg g<sup>−1</sup>, and fast adsorption kinetics with 90 % of equilibrium adsorption capacity achieved within 5 min, mainly via electrostatic adsorption and ion exchange. The spent adsorbent can be easily regenerated using 0.1 M sodium chloride (NaCl) solution, with the adsorption capacity dropped only 9 % performance after five cycles. This study offers a potential solution for wastewater treatment by using low-cost carbon adsorbents converted from waste materials, and contributes to circular economy and sustainability.</div></div>\",\"PeriodicalId\":427,\"journal\":{\"name\":\"Separation and Purification Technology\",\"volume\":\"377 \",\"pages\":\"Article 134364\"},\"PeriodicalIF\":9.0000,\"publicationDate\":\"2025-07-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Separation and Purification Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1383586625029612\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1383586625029612","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
From waste to resource: repurposing textile waste to porous carbon adsorbent for ammonium adsorption
Ammonia pollution in wastewater from aquaculture poses a significant threat to water quality and aquatic ecosystems. Conventional ammonia removal methods can be costly and inefficient, driving the need for more sustainable and affordable alternatives. In this study, post-consumer textile waste was converted to carbon adsorbent via a facile process under mild conditions involving pre-oxidation at 150 °C, pyrolysis at 400 °C in limited air, and modification with dilute sodium hydroxide (NaOH) solution (0.05 M). The combined approach leads to favorable textural properties and surface chemistry of the resultant carbon adsorbent for ammonium adsorption. The optimal adsorbent features a maximum adsorption capacity of 25.3 mg g−1, and fast adsorption kinetics with 90 % of equilibrium adsorption capacity achieved within 5 min, mainly via electrostatic adsorption and ion exchange. The spent adsorbent can be easily regenerated using 0.1 M sodium chloride (NaCl) solution, with the adsorption capacity dropped only 9 % performance after five cycles. This study offers a potential solution for wastewater treatment by using low-cost carbon adsorbents converted from waste materials, and contributes to circular economy and sustainability.
期刊介绍:
Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.