当前位置: 首页 > 文章 > 响应面法优化鱿鱼墨黑色素吸附六价铬离子条件 食品科学 2014,35 (20) 17-21
Position: Home > Articles > Optimization of Removal of Hexavalent Chromium from Aqueous Solution by Adsorption onto Squid Ink Melanin Using Response Surface Methodology FOOD SCIENCE 2014,35 (20) 17-21

响应面法优化鱿鱼墨黑色素吸附六价铬离子条件

作  者:
韦荣编;鲁婷婷;王阳光;宋茹
单  位:
浙江海洋学院海洋科学与技术学院;浙江海洋学院食品与医药学院
关键词:
鱿鱼墨;黑色素;六价铬;脱除作用;响应面分析;扫描电镜;红外光谱
摘  要:
以鱿鱼墨黑色素为吸附剂,在黑色素粉碎粒径90目和质量浓度15 mg/mL条件下,进行六价铬离子Cr(Ⅵ)吸附条件优化研究,并探讨吸附机制。通过吸附温度、吸附时间和溶液pH值三因素三水平Box-Behnken响应面试验分析,确定鱿鱼墨黑色素吸附Cr(Ⅵ)最佳条件为吸附温度35℃、吸附时间90 min、溶液pH 5.2。在确定的最优吸附条件下,鱿鱼墨黑色素对总铬离子实际清除率达到64.86%。扫描电镜结果显示吸附Cr(Ⅵ)后鱿鱼墨黑色素的球形颗粒相互聚集形成大量聚合物,红外光谱分析揭示鱿鱼墨黑色素的羟基、氨基、酰胺键Ⅲ与铬离子吸附有关。
译  名:
Optimization of Removal of Hexavalent Chromium from Aqueous Solution by Adsorption onto Squid Ink Melanin Using Response Surface Methodology
作  者:
WEI Rong-bian;LU Ting-ting;WANG Yang-guang;SONG Ru;College of Marine Science and Technology, Zhejiang Ocean University;College of Food Science and Pharmacy, Zhejiang Ocean University;
关键词:
squid ink;;melanin;;hexavalent chromium;;removal activity;;response surface methodology;;scanning electron microscopy;;Fourier transform infrared spectroscopy
摘  要:
In the present study, squid(Ommastrephes bartrami) melanin was employed to adsorb Cr(Ⅵ) in aqueous solutions. Three adsorption conditions(temperature, time and pH) for Cr(Ⅵ) onto squid melanin powder with a granularity of 90 mesh at a concentration of 15 mg/mL were optimized by response surface methodology based on a Box-Behnken model. The observed removal rate of total chromium ions was 64.86% under the optimal adsorption conditions: 35 ℃, 90 min and pH 5.2. Scanning electron microscopy(SEM) demonstrated massive aggregation of the spherical granules of squid melanin upon adsorption of Cr(Ⅵ). Fourier transform infrared(FT-IR) spectroscopy revealed that hydroxyl, amino and amide groups were the potential binding sites for chromium ions.

相似文章

计量
文章访问数: 7
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊