Lead Ion Removal in Water Using Low Methoxy Pectin-Guar Gum Beads Hybrid Adsorbent

Indo. J. Chem. Res. Pub Date : 2022-05-31 DOI:10.30598/ijcr.2022.10-nad

Nadya Nursidah Pratiwi Subroto, Fadhil Muhammad Tarmidzi, I. Wati, Velia Mulya Armans

{"title":"Lead Ion Removal in Water Using Low Methoxy Pectin-Guar Gum Beads Hybrid Adsorbent","authors":"Nadya Nursidah Pratiwi Subroto, Fadhil Muhammad Tarmidzi, I. Wati, Velia Mulya Armans","doi":"10.30598/ijcr.2022.10-nad","DOIUrl":null,"url":null,"abstract":"A high level of lead in the sediment will cause contamination of aquatic biota. Lead pollutants in water may be treated by an easy and common adsorption process. A combination of both environmentally friendly and renewable materials, low methoxy pectin (LMP), and guar gum as adsorbents can reduce the need of activated carbon which requires high temperatures in its synthesis process. LMP was prepared from high methoxy pectin using a demethylation process under alkaline conditions. LMP and guar gum are diluted in 1 M calcium chloride as a crosslinking agent. The degree of esterification was carried out to determine the demethylation process. Adsorption of lead was carried out with a lead concentration of 165 ppm in acidic conditions for 24 hours. Lead concentration was measured using AAS. Results show that the optimal pH for demethylation was 12. The ratio of 1:2 pectin-guar gum produces the strong beads related to more O-H bonds in guar gum that can be developed. pectin-guar gum beads can adsorb 63% of lead at pH 6 due to the development of hydro-complex metal ions under more basic conditions.","PeriodicalId":13392,"journal":{"name":"Indo. J. Chem. Res.","volume":"34 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Indo. J. Chem. Res.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.30598/ijcr.2022.10-nad","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 3

Abstract

A high level of lead in the sediment will cause contamination of aquatic biota. Lead pollutants in water may be treated by an easy and common adsorption process. A combination of both environmentally friendly and renewable materials, low methoxy pectin (LMP), and guar gum as adsorbents can reduce the need of activated carbon which requires high temperatures in its synthesis process. LMP was prepared from high methoxy pectin using a demethylation process under alkaline conditions. LMP and guar gum are diluted in 1 M calcium chloride as a crosslinking agent. The degree of esterification was carried out to determine the demethylation process. Adsorption of lead was carried out with a lead concentration of 165 ppm in acidic conditions for 24 hours. Lead concentration was measured using AAS. Results show that the optimal pH for demethylation was 12. The ratio of 1:2 pectin-guar gum produces the strong beads related to more O-H bonds in guar gum that can be developed. pectin-guar gum beads can adsorb 63% of lead at pH 6 due to the development of hydro-complex metal ions under more basic conditions.

查看原文本刊更多论文

低甲氧基果胶-瓜尔胶复合吸附剂去除水中铅离子

沉积物中高水平的铅会造成水生生物的污染。水中的铅污染物可以用一种简单而常见的吸附法处理。低甲氧基果胶(LMP)和瓜尔胶作为吸附剂，结合环保和可再生材料，可以减少活性炭在合成过程中对高温的需求。以高甲氧基果胶为原料，在碱性条件下采用去甲基化工艺制备LMP。LMP和瓜尔胶在1 M氯化钙中稀释作为交联剂。通过酯化程度来确定去甲基化过程。在铅浓度为165 ppm的条件下，在酸性条件下吸附铅24小时。采用原子吸收光谱法测定铅浓度。结果表明，去甲基化的最佳pH为12。果胶与瓜尔胶的比例为1:2时，瓜尔胶中O-H键较多，可形成较强的胶珠。果胶瓜尔胶珠在pH为6的条件下可以吸附63%的铅，这是由于在更基本的条件下，水络合金属离子的发展。

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

Indo. J. Chem. Res.

自引率

0.00%

发文量