{"title":"咖啡壳捕获水中的铜(II)和镉(II)","authors":"南澤 麿優覽, 中嶋 すぎ子, 友紀 満江, 和江 宮澤, 慶子 上野, 愛 羽鳥, 冴子 宮島, 星野 真希枝, 吉田 章一郎, 信治 高井","doi":"10.1246/NIKKASHI.2002.459","DOIUrl":null,"url":null,"abstract":"Adsorption behavior of heavy metals on arabica and robusta roasted coffee beans treated in 5 roasting degrees was investigated. The coffee beans residue after extraction with hot water were suspended in aqueous solutions (pH = ca.6.6) containg Cu(II) or Cd(II) and the amount of heavy metal remaining in the solution was determined on an atomic absorption spectrophotometer. Adsorption ratios of Cu(II) were 60.5 and 79.6% for the light and French roasted coffee beans of Indonesia robusta employed as adsorbent, respectively. However, when the roasted coffee beans were washed with distilled water and then air-dried prior adsorption experiments, the adsorption ratios of Cu were 92.2 and 92.6%, respectively and that of Cd was 95.6 and 97.0%. Thus, the heavy metals were almost removed from aqueous solution by use of the roasted coffee beans with washing and drying treatments.","PeriodicalId":19311,"journal":{"name":"Nippon Kagaku Kaishi","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2002-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":"{\"title\":\"コーヒー殻による水中の銅(II)およびカドミウム(II)の捕集除去\",\"authors\":\"南澤 麿優覽, 中嶋 すぎ子, 友紀 満江, 和江 宮澤, 慶子 上野, 愛 羽鳥, 冴子 宮島, 星野 真希枝, 吉田 章一郎, 信治 高井\",\"doi\":\"10.1246/NIKKASHI.2002.459\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Adsorption behavior of heavy metals on arabica and robusta roasted coffee beans treated in 5 roasting degrees was investigated. The coffee beans residue after extraction with hot water were suspended in aqueous solutions (pH = ca.6.6) containg Cu(II) or Cd(II) and the amount of heavy metal remaining in the solution was determined on an atomic absorption spectrophotometer. Adsorption ratios of Cu(II) were 60.5 and 79.6% for the light and French roasted coffee beans of Indonesia robusta employed as adsorbent, respectively. However, when the roasted coffee beans were washed with distilled water and then air-dried prior adsorption experiments, the adsorption ratios of Cu were 92.2 and 92.6%, respectively and that of Cd was 95.6 and 97.0%. Thus, the heavy metals were almost removed from aqueous solution by use of the roasted coffee beans with washing and drying treatments.\",\"PeriodicalId\":19311,\"journal\":{\"name\":\"Nippon Kagaku Kaishi\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2002-03-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"7\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nippon Kagaku Kaishi\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1246/NIKKASHI.2002.459\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nippon Kagaku Kaishi","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1246/NIKKASHI.2002.459","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Adsorption behavior of heavy metals on arabica and robusta roasted coffee beans treated in 5 roasting degrees was investigated. The coffee beans residue after extraction with hot water were suspended in aqueous solutions (pH = ca.6.6) containg Cu(II) or Cd(II) and the amount of heavy metal remaining in the solution was determined on an atomic absorption spectrophotometer. Adsorption ratios of Cu(II) were 60.5 and 79.6% for the light and French roasted coffee beans of Indonesia robusta employed as adsorbent, respectively. However, when the roasted coffee beans were washed with distilled water and then air-dried prior adsorption experiments, the adsorption ratios of Cu were 92.2 and 92.6%, respectively and that of Cd was 95.6 and 97.0%. Thus, the heavy metals were almost removed from aqueous solution by use of the roasted coffee beans with washing and drying treatments.