文献类型：期刊文献

中文题名：萃取过程中的盐析效应

英文题名：Salting-Out Effect in Extraction Process

作者：蔡水洪[1];王大为[1];周建中[1];苏元复[1]

机构：[1]华东化工学院化学工程系

年份：1992

卷号：18

期号：2

起止页码：139

中文期刊名：华东化工学院学报

外文期刊名：Huadong Huagong Xueyuan xuebao

收录：国家哲学社会科学学术期刊数据库;EI(收录号：1992080551164);Scopus;CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：萃取;盐析效应;锡

外文关键词：extraction; salting-out effect; tin; malic acid; succinic acid; fumaric acid; hydrochloric acid; phosphoric acid

摘要：以磷酸三丁酯萃取富马酸和从盐酸溶液中苹取Sn^(4+),三烷基氧化磷革取苹果酸、琥珀酸,二丁基亚矾从天然磷矿的盐酸分解液中萃取盐酸和磷酸为例,进行了萃取过程盐析效应的研究。提出了盐析剂浓度对被萃物分配比或萃取率经验公式,并用文献中的数据对此经验公式进行了检验,计算值与实验值吻合较好。
The effects of salting-out agents on the extraction of Sn^(4+) and fumaric acid with TBP, malic acid and succinic acid with TRPO as well as HCl and H_3PO_4 with DBSO are discussed. For the salting-out agents used in Sn^(4+) extraction, the effect is in the following order; AlCl_3>CaCl_2>NaCl>NH_4Cl>KGl. The distribution coefficients(D_(MA), D(SA) and D_(FA)) of malic acid, succinic acid and fumaric acid increase with increasing concentration of NaCl; D_(MA) and D_(SA) decrease while D_(FA) increases with increasing concentration of NaNO_3; D_(MA) and D_(FA) decrease with increasing concentration of Na_2SO_4. The higher the concentration of CaCl_2 in the leach liquor of phosphorite by hydrochloric acid, the higher the distribution coefficients of HCl and H_3PO_4 in extraction. An empirical formula has been proposed, by which the effect of concentration of salting-out agents on distribution coefficient(D_2)and percentage extraction (E_1)can be calculated. Where n is equal to 3/2 when the anion of salting-out agents is the same as that of the solute. The calculated values are in close agreement with experimental results for TBP-UO_2(NO_3)_2-HNO_3 system as reference.