Chitosan-derived activated carbon/chitosan composite beads for adsorptive removal of methylene blue and acid orange 7 dyes

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers Pub Date : 2024-08-22 DOI:10.1016/j.reactfunctpolym.2024.106028

Seungoh Jung , Minjung Jung , Juhee Yoon , Jungkyu Kim , Hyoung-Joon Jin , Hyo Won Kwak

{"title":"Chitosan-derived activated carbon/chitosan composite beads for adsorptive removal of methylene blue and acid orange 7 dyes","authors":"Seungoh Jung , Minjung Jung , Juhee Yoon , Jungkyu Kim , Hyoung-Joon Jin , Hyo Won Kwak","doi":"10.1016/j.reactfunctpolym.2024.106028","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, a chitosan/activated carbon composite was developed for the sustainable removal of dye pollutants from activated carbon derived from chitosan. First, chitosan was converted into chitosan-derived activated carbon (C-AC) with a large Brunauer-Emmett-Teller (BET) surface area of 2428 m<sup>2</sup>/g through carbonization using a potassium hydroxide (KOH) chemical activator. To enable simple separation from contaminated water and sustainable use in the adsorption process, the generated C-AC was incorporated into a bead-type, stable three-dimensional chitosan polymer network structure. The prepared C-AC-incorporated chitosan beads showed excellent adsorption capacity for the anionic acid orange 7 (AO) (511.38 mg/g) and the cationic methylene blue (MB) (413.08 mg/g). In addition, it maintained structural stability even in various pH environments and could be easily separated from contaminated water. The C-AC-incorporated chitosan beads showed excellent reusability and durability, maintaining at least 82% and 86% removal efficiencies for AO and MB dyes even after five reuses. This study suggests the potential use of chitosan as an eco-friendly adsorbent that can be utilized simultaneously as an activated carbon precursor and as a matrix for robust bead-like polymer composites.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":"204 ","pages":"Article 106028"},"PeriodicalIF":4.5000,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reactive & Functional Polymers","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1381514824002037","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

In this study, a chitosan/activated carbon composite was developed for the sustainable removal of dye pollutants from activated carbon derived from chitosan. First, chitosan was converted into chitosan-derived activated carbon (C-AC) with a large Brunauer-Emmett-Teller (BET) surface area of 2428 m²/g through carbonization using a potassium hydroxide (KOH) chemical activator. To enable simple separation from contaminated water and sustainable use in the adsorption process, the generated C-AC was incorporated into a bead-type, stable three-dimensional chitosan polymer network structure. The prepared C-AC-incorporated chitosan beads showed excellent adsorption capacity for the anionic acid orange 7 (AO) (511.38 mg/g) and the cationic methylene blue (MB) (413.08 mg/g). In addition, it maintained structural stability even in various pH environments and could be easily separated from contaminated water. The C-AC-incorporated chitosan beads showed excellent reusability and durability, maintaining at least 82% and 86% removal efficiencies for AO and MB dyes even after five reuses. This study suggests the potential use of chitosan as an eco-friendly adsorbent that can be utilized simultaneously as an activated carbon precursor and as a matrix for robust bead-like polymer composites.

Abstract Image

查看原文本刊更多论文

壳聚糖衍生活性炭/壳聚糖复合珠用于吸附去除亚甲基蓝和酸性橙 7 染料

本研究开发了一种壳聚糖/活性炭复合材料，用于从壳聚糖衍生的活性炭中持续去除染料污染物。首先，通过使用氢氧化钾（KOH）化学活化剂进行碳化，将壳聚糖转化为具有 2428 m2/g 大布伦纳-艾美特-泰勒（BET）表面积的壳聚糖衍生活性炭（C-AC）。为了能够简单地从受污染的水中分离出来并在吸附过程中持续使用，生成的 C-AC 被纳入了一种珠状、稳定的三维壳聚糖聚合物网络结构中。所制备的 C-AC 嵌合壳聚糖珠对阴离子酸性橙 7（AO）（511.38 毫克/克）和阳离子亚甲基蓝（MB）（413.08 毫克/克）具有出色的吸附能力。此外，即使在不同的 pH 值环境中，它也能保持结构稳定，并且很容易从受污染的水中分离出来。C-AC 嵌合壳聚糖微珠表现出极佳的重复使用性和耐久性，即使重复使用五次，对 AO 和 MB 染料的去除率仍分别保持在 82% 和 86% 以上。这项研究表明，壳聚糖可作为一种环保型吸附剂，同时用作活性炭前体和坚固的珠状聚合物复合材料基质。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.