Recovery of palladium using chemically modified cedar wood powder.
Recovery of palladium using chemically modified cedar wood powder.
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DOI：
10.1016/j.jcis.2009.06.043
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发表时间：
2009-10
影响因子：
9.9
通讯作者：
D. Parajuli;K. Hirota
中科院分区：
文献类型：
--
作者：
D. Parajuli;K. Hirota
将日本雪松木粉(CWP)化学改性为叔胺类吸附剂，研究了选择性回收各种工业废水中的Pd(II)。从0.1M到5M的HCl和HNO_3体系的批量吸附试验表明，在HNO_3介质中性能稳定，吸附效果较好。研究了Pd(II)在HCl和HNO3中的最大负载量。采用实际工业溶液进行的连续流动实验表明，使用改性水煤浆选择性吸收和预富集酸性废水中的痕量钯是可行的。此外，γ长时间照射下的稳定吸附性能和从模拟高放废液中选择性回收钯也是该研究的重要成果。
Japanese cedar wood powder (CWP) was chemically modified to a tertiary-amine-type adsorbent and studied for the selective recovery of Pd(II) from various industrial waters. Batch adsorption tests performed from 0.1M to 5M HCl and HNO3systems reveal stable performance with better results in HNO3medium. The maximum loading capacity for Pd(II) was studied in HCl as well as in HNO3. A continuous-flow experiment taking a real industrial solution revealed the feasibility of using modified CWP for the selective uptake and preconcentration of traces of palladium contained in acidic effluents. In addition, stable adsorption performance even on long exposure to γ-irradiation and selective recovery of palladium from simulated high-level liquid waste (HLW) are important outcomes of the study.