{"title":"外骨骼虾壳聚糖对制革废水中铬的生物吸附","authors":"Beatriz Jaramillo Colorado, Edisson Duarte Restrepo, Jesús Olivero Verbel","doi":"10.3407/RPN.V3I1.21","DOIUrl":null,"url":null,"abstract":"Chromium in the effluent is a major concern for tanning industry. Chemical precipitation methods are commonly employed for the removal of chromium but this leads to formation of chrome-bearing solid waste. Ion exchange and membrane separation methods are relatively expensive. In this study a chitosan bioadsorbent has been employed to remove chromium from tannery effluent. The effect of pH and chromium concentration showed chitosan to exhibit uptake of about 52 mg Cr (III)/g at optimum pH of 4.0. Langmuir and Freundlich models were applied. Increase of initial concentration of Cr resulted to a decrease in adsorption efficiency.","PeriodicalId":153647,"journal":{"name":"Revista Productos Naturales","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"BIOSORPTION OF CHROMIUM FROM TANNERY WASTEWATERS BY CHITOSAN OBTAINED FROM EXOSKELETON SHRIMP\",\"authors\":\"Beatriz Jaramillo Colorado, Edisson Duarte Restrepo, Jesús Olivero Verbel\",\"doi\":\"10.3407/RPN.V3I1.21\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Chromium in the effluent is a major concern for tanning industry. Chemical precipitation methods are commonly employed for the removal of chromium but this leads to formation of chrome-bearing solid waste. Ion exchange and membrane separation methods are relatively expensive. In this study a chitosan bioadsorbent has been employed to remove chromium from tannery effluent. The effect of pH and chromium concentration showed chitosan to exhibit uptake of about 52 mg Cr (III)/g at optimum pH of 4.0. Langmuir and Freundlich models were applied. Increase of initial concentration of Cr resulted to a decrease in adsorption efficiency.\",\"PeriodicalId\":153647,\"journal\":{\"name\":\"Revista Productos Naturales\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2009-05-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Revista Productos Naturales\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3407/RPN.V3I1.21\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Revista Productos Naturales","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3407/RPN.V3I1.21","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
BIOSORPTION OF CHROMIUM FROM TANNERY WASTEWATERS BY CHITOSAN OBTAINED FROM EXOSKELETON SHRIMP
Chromium in the effluent is a major concern for tanning industry. Chemical precipitation methods are commonly employed for the removal of chromium but this leads to formation of chrome-bearing solid waste. Ion exchange and membrane separation methods are relatively expensive. In this study a chitosan bioadsorbent has been employed to remove chromium from tannery effluent. The effect of pH and chromium concentration showed chitosan to exhibit uptake of about 52 mg Cr (III)/g at optimum pH of 4.0. Langmuir and Freundlich models were applied. Increase of initial concentration of Cr resulted to a decrease in adsorption efficiency.
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