Division of Environmental Science & Ecological Engineering, College of Life Sciences & Biotechnology, Korea University, 5-1 Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea.
Bioresour Technol. 2012 Sep;120:328-31. doi: 10.1016/j.biortech.2012.06.045. Epub 2012 Jun 21.
In the present study, wood vinegar was used to extract chromium, copper, and arsenic from chromated copper arsenate (CCA)-treated wood. The extraction efficiency for CCA elements was evaluated using various concentrations of wood vinegar, extraction temperatures, and extraction periods. The extraction efficiency for CCA elements increased with increasing the concentration of wood vinegar and the extraction conditions, resulting in maximal removal rate of copper (95.7%), followed by arsenic (92.7%) and chromium (86.3%). Since wood vinegar afforded high levels of copper extraction, its use was extended to copper-based preservative-treated wood, wherein significant extraction of copper up to 97.6% and 95.7% was obtained from alkaline copper quats (ACQ)- and copper azole (CuAz)-treated sawdust, respectively. To the best of our knowledge, this is the first study on the application of wood vinegar for the extraction of metal elements from CCA-treated wood.
在本研究中，木醋液被用于从铬酸铜砷酸（CCA）处理过的木材中提取铬、铜和砷。使用不同浓度的木醋液、提取温度和提取时间来评估 CCA 元素的提取效率。随着木醋液浓度和提取条件的增加，CCA 元素的提取效率增加，导致铜的去除率最高（95.7%），其次是砷（92.7%）和铬（86.3%）。由于木醋液提供了高水平的铜提取，因此将其应用于铜基防腐剂处理过的木材中，从碱性铜季铵盐（ACQ）和铜唑（CuAz）处理过的木屑中分别获得了高达 97.6%和 95.7%的铜提取。据我们所知，这是首次将木醋液应用于从 CCA 处理过的木材中提取金属元素的研究。
