优化富含胺的壳聚糖/聚乙烯亚胺复合材料对 Cr (VI) 的批次吸附和填料床柱吸附:在电镀废水处理中的应用

IF 4.3 3区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC ACS Applied Electronic Materials Pub Date : 2024-05-14 DOI:10.1039/D4EW00123K
Ali Ansari, Raynara Maria Silva Jacovone, Enrico Tapire Nadres, Minh Đỗ and Debora Frigi Rodrigues
{"title":"优化富含胺的壳聚糖/聚乙烯亚胺复合材料对 Cr (VI) 的批次吸附和填料床柱吸附:在电镀废水处理中的应用","authors":"Ali Ansari, Raynara Maria Silva Jacovone, Enrico Tapire Nadres, Minh Đỗ and Debora Frigi Rodrigues","doi":"10.1039/D4EW00123K","DOIUrl":null,"url":null,"abstract":"<p >Toxic oxyanions of Cr(<small>VI</small>) can be potentially removed by adsorbents with positively charged surfaces. In this study, we synthesized a stable and insoluble amine-rich polymer composite (CS–PEI–GLA) by crosslinking polyethyleneimine (PEI), a soluble amine-rich synthetic polymer, and chitosan (CS) with glutaraldehyde (GLA). The positively charged amine groups were the main adsorption sites. The batch investigation demonstrated that the adsorbent was able to remove ≥90% of chromium at pH ranging from 2 to 8. Due to deprotonation of the amine groups, chromium removal decreased at higher pH values. The adsorption was fast and reached equilibrium after 45 min. The maximum adsorption capacity was 500 mg g<small><sup>−1</sup></small> according to the Langmuir isotherm and did not decrease in the presence of monovalent anions. In the column study, the adsorption capacity was the highest when the flow rate was the lowest (5 mL min<small><sup>−1</sup></small>), influent concentration was medium (225 mg L<small><sup>−1</sup></small>), and the bed height was the shortest (3.5 cm). NaOH was the best recovery reagent with recovery of 67% in batch and 31% in the column. The CS–PEI–GLA composite was able to remove 97.1 ± 0.1% chromium in batch and treat 750 mL of electroplating wastewater with a 3.5 cm packed-bed column.</p>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":null,"pages":null},"PeriodicalIF":4.3000,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Optimization of batch and packed-bed column Cr(vi) adsorption of an amine-rich chitosan/polyethyleneimine composite: application in electroplating wastewater treatment†\",\"authors\":\"Ali Ansari, Raynara Maria Silva Jacovone, Enrico Tapire Nadres, Minh Đỗ and Debora Frigi Rodrigues\",\"doi\":\"10.1039/D4EW00123K\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Toxic oxyanions of Cr(<small>VI</small>) can be potentially removed by adsorbents with positively charged surfaces. In this study, we synthesized a stable and insoluble amine-rich polymer composite (CS–PEI–GLA) by crosslinking polyethyleneimine (PEI), a soluble amine-rich synthetic polymer, and chitosan (CS) with glutaraldehyde (GLA). The positively charged amine groups were the main adsorption sites. The batch investigation demonstrated that the adsorbent was able to remove ≥90% of chromium at pH ranging from 2 to 8. Due to deprotonation of the amine groups, chromium removal decreased at higher pH values. The adsorption was fast and reached equilibrium after 45 min. The maximum adsorption capacity was 500 mg g<small><sup>−1</sup></small> according to the Langmuir isotherm and did not decrease in the presence of monovalent anions. In the column study, the adsorption capacity was the highest when the flow rate was the lowest (5 mL min<small><sup>−1</sup></small>), influent concentration was medium (225 mg L<small><sup>−1</sup></small>), and the bed height was the shortest (3.5 cm). NaOH was the best recovery reagent with recovery of 67% in batch and 31% in the column. The CS–PEI–GLA composite was able to remove 97.1 ± 0.1% chromium in batch and treat 750 mL of electroplating wastewater with a 3.5 cm packed-bed column.</p>\",\"PeriodicalId\":3,\"journal\":{\"name\":\"ACS Applied Electronic Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-05-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Electronic Materials\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2024/ew/d4ew00123k\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Electronic Materials","FirstCategoryId":"93","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/ew/d4ew00123k","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0

摘要

表面带正电荷的吸附剂有可能去除有毒的氧阴离子 Cr (VI)。在这项研究中,我们利用戊二醛(GLA)交联可溶性富胺合成聚合物聚乙烯亚胺(PEI)和壳聚糖(CS),合成了一种稳定的不溶性富胺聚合物复合材料(CS-PEI-GLA)。带正电荷的胺基团是主要的吸附位点。批量研究表明,在 pH 值为 2 到 8 的条件下,该吸附剂能够去除 ≥90% 的铬。由于胺基团的去质子化作用,pH 值越高,铬的去除率越低。吸附速度很快,45 分钟后就达到了平衡。根据 Langmuir 等温线,最大吸附容量为 500 毫克/克,并且在存在单价阴离子的情况下吸附容量没有降低。在色谱柱研究中,流速最低(5 mL/min)、进水浓度中等(225 mg/L)、床层高度最短(3.5 cm)时,吸附容量最大。NaOH 是最好的回收试剂,批次回收率为 67%,色谱柱回收率为 31%。CS-PEI-GLA 能够去除 97.1 ± 0.1% 的铬,并能用 3.5 厘米填料床柱处理 750 毫升电镀废水。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

摘要图片

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Optimization of batch and packed-bed column Cr(vi) adsorption of an amine-rich chitosan/polyethyleneimine composite: application in electroplating wastewater treatment†

Toxic oxyanions of Cr(VI) can be potentially removed by adsorbents with positively charged surfaces. In this study, we synthesized a stable and insoluble amine-rich polymer composite (CS–PEI–GLA) by crosslinking polyethyleneimine (PEI), a soluble amine-rich synthetic polymer, and chitosan (CS) with glutaraldehyde (GLA). The positively charged amine groups were the main adsorption sites. The batch investigation demonstrated that the adsorbent was able to remove ≥90% of chromium at pH ranging from 2 to 8. Due to deprotonation of the amine groups, chromium removal decreased at higher pH values. The adsorption was fast and reached equilibrium after 45 min. The maximum adsorption capacity was 500 mg g−1 according to the Langmuir isotherm and did not decrease in the presence of monovalent anions. In the column study, the adsorption capacity was the highest when the flow rate was the lowest (5 mL min−1), influent concentration was medium (225 mg L−1), and the bed height was the shortest (3.5 cm). NaOH was the best recovery reagent with recovery of 67% in batch and 31% in the column. The CS–PEI–GLA composite was able to remove 97.1 ± 0.1% chromium in batch and treat 750 mL of electroplating wastewater with a 3.5 cm packed-bed column.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
CiteScore
7.20
自引率
4.30%
发文量
567
期刊最新文献
Vitamin B12: prevention of human beings from lethal diseases and its food application. Current status and obstacles of narrowing yield gaps of four major crops. Cold shock treatment alleviates pitting in sweet cherry fruit by enhancing antioxidant enzymes activity and regulating membrane lipid metabolism. Removal of proteins and lipids affects structure, in vitro digestion and physicochemical properties of rice flour modified by heat-moisture treatment. Investigating the impact of climate variables on the organic honey yield in Turkey using XGBoost machine learning.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1