Department of Forest Sciences and Research Institute for Agriculture and Life Science, Seoul National University, Seoul, Republic of Korea.
J Hazard Mater. 2012 Aug 15;227-228:445-52. doi: 10.1016/j.jhazmat.2012.05.052. Epub 2012 May 27.
In this study, chromated copper arsenate-treated wood (CCA-W) and alkaline copper quaternary compounds-treated wood (ACQ-W) were subjected to fast pyrolysis at 500°C for ca. 2s to produce bio-oil and char. The physicochemical properties of the pyrolytic products as well as the distribution of heavy metals - arsenic, copper and chrome - during fast pyrolysis were investigated. The water content, viscosity, pH and higher heating value (HHV) of bio-oil from CCA-W were 24.8 wt%, 13.5 cSt, 2.1 and 16 MJ/kg, respectively, whereas those of bio-oil from ACQ-W were 27.9 wt%, 16 cSt, 3.0 and 14.1 MJ/kg, respectively. The yields of bio-oil from CCA-W and ACQ-W were 43.3% and 46.6%, respectively, significantly lower than that of control (61.6%). In the pyrolytic products of CCA-W, the concentrations of arsenic, copper and chromium were determined to be 36.4 wt%, 74.0 wt% and 75.4 wt% in char, respectively, 34.5 wt%, 10.3 wt% and 9.0 wt% in bio-oil, respectively, and 29.0 wt%, 15.7 wt% and 15.5 wt% in gas, respectively. In addition, most of the copper appeared in the char (98.8 wt%) and only a trace amount of copper was detected in the bio-oil (0.2 wt%) produced by ACQ-W.
在这项研究中，采用铬酸铜砷酸盐处理木材（CCA-W）和堿性铜季铵化合物处理木材（ACQ-W），在 500°C 下进行快速热解约 2 秒，以生产生物油和炭。研究了热解产物的物理化学性质以及快速热解过程中重金属砷、铜和铬的分布情况。CCA-W 生产的生物油的含水量、粘度、pH 值和高位热值（HHV）分别为 24.8wt%、13.5cSt、2.1 和 16MJ/kg，而 ACQ-W 生产的生物油的含水量、粘度、pH 值和高位热值（HHV）分别为 27.9wt%、16cSt、3.0 和 14.1MJ/kg。CCA-W 和 ACQ-W 生产的生物油产率分别为 43.3%和 46.6%，明显低于对照（61.6%）。在 CCA-W 的热解产物中，分别在炭中检测到砷、铜和铬的浓度为 36.4wt%、74.0wt%和 75.4wt%，在生物油中分别为 34.5wt%、10.3wt%和 9.0wt%，在气体中分别为 29.0wt%、15.7wt%和 15.5wt%。此外，大部分铜出现在炭中（98.8wt%），而 ACQ-W 生产的生物油中仅检测到痕量铜（0.2wt%）。
