{"title":"利用自然低pH增强工业废水中2,4-二氯苯氧乙酸的去除:炭黑吸附和资源回收方法","authors":"Noppaluck Promjan , Kullapa Soratana , Tanapon Phenrat","doi":"10.1016/j.jwpe.2025.108137","DOIUrl":null,"url":null,"abstract":"<div><div>A sustainable approach for treating 2,4-dichlorophenoxyacetic acid (2,4-D) in acidic industrial wastewater was investigated by leveraging its naturally low pH characteristics. The adsorption performance of bare carbon black (CB) under acidic conditions was evaluated in comparison with 3-aminopropyltriethoxysilane (APTES)-modified CB, while exploring the integration of waste-derived sodium hydroxide (NaOH) for final pH adjustment. The results showed that optimal 2,4-D removal was achieved by bare CB at pH 2, aided by hydrogen bonding, electrostatic interactions, and Lewis acid–base interactions working synergistically. At pH 2, the maximum sorption capacity of 14 mg/g was observed at an optimal CB dose of 4.5 g/L. While APTES-modified CB at pH 4 had a 3.63-times higher sorption capacity, our life-cycle assessment revealed that utilizing bare CB under naturally acidic conditions coupled with waste-derived NaOH reduced the global warming potential by 27 % compared to using APTES-modified CB with fresh NaOH. This reduction primarily resulted from avoiding energy-intensive modification processes and utilizing waste-derived chemicals. The approach also decreased operational costs by 35 %. The adsorption process followed the Freundlich isotherm and pseudo-second-order kinetic models, indicating multi-layer adsorption and chemisorption mechanisms. This research demonstrates that integrating naturally occurring acidic conditions with waste-derived materials can enhance both environmental and economic sustainability in treating industrial wastewater under challenging pH conditions, supporting circular-economy principles in wastewater treatment.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"76 ","pages":"Article 108137"},"PeriodicalIF":6.3000,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Leveraging naturally low pH for enhanced 2,4-dichlorophenoxyacetic acid removal from industrial wastewater: Carbon black adsorption and resource recovery approach\",\"authors\":\"Noppaluck Promjan , Kullapa Soratana , Tanapon Phenrat\",\"doi\":\"10.1016/j.jwpe.2025.108137\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A sustainable approach for treating 2,4-dichlorophenoxyacetic acid (2,4-D) in acidic industrial wastewater was investigated by leveraging its naturally low pH characteristics. The adsorption performance of bare carbon black (CB) under acidic conditions was evaluated in comparison with 3-aminopropyltriethoxysilane (APTES)-modified CB, while exploring the integration of waste-derived sodium hydroxide (NaOH) for final pH adjustment. The results showed that optimal 2,4-D removal was achieved by bare CB at pH 2, aided by hydrogen bonding, electrostatic interactions, and Lewis acid–base interactions working synergistically. At pH 2, the maximum sorption capacity of 14 mg/g was observed at an optimal CB dose of 4.5 g/L. While APTES-modified CB at pH 4 had a 3.63-times higher sorption capacity, our life-cycle assessment revealed that utilizing bare CB under naturally acidic conditions coupled with waste-derived NaOH reduced the global warming potential by 27 % compared to using APTES-modified CB with fresh NaOH. This reduction primarily resulted from avoiding energy-intensive modification processes and utilizing waste-derived chemicals. The approach also decreased operational costs by 35 %. The adsorption process followed the Freundlich isotherm and pseudo-second-order kinetic models, indicating multi-layer adsorption and chemisorption mechanisms. This research demonstrates that integrating naturally occurring acidic conditions with waste-derived materials can enhance both environmental and economic sustainability in treating industrial wastewater under challenging pH conditions, supporting circular-economy principles in wastewater treatment.</div></div>\",\"PeriodicalId\":17528,\"journal\":{\"name\":\"Journal of water process engineering\",\"volume\":\"76 \",\"pages\":\"Article 108137\"},\"PeriodicalIF\":6.3000,\"publicationDate\":\"2025-06-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of water process engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2214714425012097\",\"RegionNum\":2,\"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":"Journal of water process engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214714425012097","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Leveraging naturally low pH for enhanced 2,4-dichlorophenoxyacetic acid removal from industrial wastewater: Carbon black adsorption and resource recovery approach
A sustainable approach for treating 2,4-dichlorophenoxyacetic acid (2,4-D) in acidic industrial wastewater was investigated by leveraging its naturally low pH characteristics. The adsorption performance of bare carbon black (CB) under acidic conditions was evaluated in comparison with 3-aminopropyltriethoxysilane (APTES)-modified CB, while exploring the integration of waste-derived sodium hydroxide (NaOH) for final pH adjustment. The results showed that optimal 2,4-D removal was achieved by bare CB at pH 2, aided by hydrogen bonding, electrostatic interactions, and Lewis acid–base interactions working synergistically. At pH 2, the maximum sorption capacity of 14 mg/g was observed at an optimal CB dose of 4.5 g/L. While APTES-modified CB at pH 4 had a 3.63-times higher sorption capacity, our life-cycle assessment revealed that utilizing bare CB under naturally acidic conditions coupled with waste-derived NaOH reduced the global warming potential by 27 % compared to using APTES-modified CB with fresh NaOH. This reduction primarily resulted from avoiding energy-intensive modification processes and utilizing waste-derived chemicals. The approach also decreased operational costs by 35 %. The adsorption process followed the Freundlich isotherm and pseudo-second-order kinetic models, indicating multi-layer adsorption and chemisorption mechanisms. This research demonstrates that integrating naturally occurring acidic conditions with waste-derived materials can enhance both environmental and economic sustainability in treating industrial wastewater under challenging pH conditions, supporting circular-economy principles in wastewater treatment.
期刊介绍:
The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies