Removal of Cr (VI) from Aqueous Solution by Immobilized Tannin Extracted from Eucalyptus Leaves

摘要：

Tannin, which was extracted from eucalyptus leaves, was immobilized with alginate sodium-calcium to form gel beads which were used as bio-adsorbent to remove Cr(VI) from aqueous solution. The influences of various factors, such as dosage of gel beads, pH, contact time, initial Cr(VI) concentration and coexistence ions on the sorption capacity were studied in batch equilibration technique. The results showed that almost 100％ of Cr(Vl) was removed with the dosage of 400 gel beads and contacting time of 3 h at 55℃. The results indicate that the immobilized tannin used in this work is proved to be effective materials for the treatment of chromium-bearing aqueous solutions.

关键词： tannin eucalyptus leaves gel bead removal Cr(VI)

作者: Wen LIU Yankui TANG Jing WANG Lisa TAN

作者单位: College of the Environment, Guangxi University, Naiming, Guangxi, China, 531004

会议类型: 国际会议

会议名称: The Sixth International Conference on Waste Management and Technology(第六届固体废物管理与技术国际会议 ICWMT 6)

会议地点: 苏州

会议语种:英文

页码: 146-150

在线出版日期: 2011-08-30（万方平台首次上网日期，不代表论文的发表时间）