期刊论文

Effect of different extractants on removal of heavy metals in peanut meal

中文

环境工程技术学报

1674-991X

2020

10

1

112-117

10.12153/j.issn.1674-991X.20190053

国家重点研发计划项目(2016YFD0800807)。

本校为第一机构

比较了柠檬酸钾、酒石酸钾和盐酸萃取对花生粕饼中重金属的去除效果,并对萃取前后花生粕饼中营养元素和粗蛋白浓度的变化进行了研究。结果表明:随着萃取时间和萃取剂浓度的增加,花生粕饼中Pb、Zn、Cu和Cd的去除率也逐渐增加;采用0. 50%和1. 00%的盐酸萃取后,粕饼中的Cd浓度为0. 42和0. 34 mg/kg; 3种萃取剂连续萃取3次后,Zn和Cu的去除率均有较大提升,30 mmol/L酒石酸钾第3次萃取和0. 25%盐酸第2次萃取后粕饼中Cd浓度为0. 36和0. 21 mg/kg,均满足GB13078—2017《饲料卫生标准》的要求;柠檬酸钾和酒石酸钾在去除重金属的同时,营养元素流失较小,低浓度的盐酸萃取使部分营养元素流失量大,对粗蛋白流...

The effects of potassium citrate,potassium tartrate and hydrochloric acid on heavy metals removal from peanut meals were compared,and the variation of nutrient elements and crude protein concentrations before and after extraction were studied.The results showed that the removal rate of Pb,Zn,Cu and Cd in peanut meals gradually increased with the increase of extraction time and concentrations of extractants.The remaining Cd content in the meal under the extraction via 0.50%and 1.00%hydrochloric acid were only 0.42 mg/kg and 0.34 mg/kg,respectively.After three successive extractions with the thr...