林产化学与工业2012，Vol.32Issue(5)：93-96,4.
单宁锗沉淀中单宁的回收及再利用的研究
Recovery and Reuse of Tannin from Tannin-germanium Slag
摘要
Abstract
The disposing of the tannin-germanium slag,which was obtained during tannin-germanium precipitation process,was studied. The separation of tannin and germanium can be achieved by successively slurrying the tannin-germanium slag,complex-ation with oxalic acid and adjusting the pH value of the suspension to 8 -9 with 10 % aqueous sodium hydroxide. The germanium salt is removed by centrifugal separation,and the aqueous tannin solution can be reused to extract germanium. The result shows that recovery rate of tannin can reach 50 % . Using 28 times of tannin as much as germanium,the recovery rate of germanium can be 98 %.关键词
单宁/锗渣/回收/草酸/碱Key words
tannin/tannin-germanium slag/recycling/oxalic acid/sodium hydroxide分类
化学化工引用本文复制引用
徐浩,秦清,钱星,张宗和,黄嘉玲,陈文文,陶林..单宁锗沉淀中单宁的回收及再利用的研究[J].林产化学与工业,2012,32(5):93-96,4.基金项目
国家林业公益性行业科研专项资助项目(201004013) （201004013）
