College of Environment and Material Engineering, Hangzhou Dianzi University, Hangzhou 310027, China.
Environ Sci Pollut Res Int. 2013 Jul;20(7):4405-13. doi: 10.1007/s11356-013-1658-1. Epub 2013 Mar 28.
The effectiveness of hydroxyapatite (HAP) on volatilization reducing of heavy metals during incineration of tannery sludge was investigated. The tannery sludge was treated through doped with different content of HAP, and then incinerated in the tube furnace at the temperature of 600 °C and 900 °C. The results showed that the volatilization rates decreased by 10.19% for Pb, 10.17% for Zn, 7.40% for Cu and 5.33% for Cr at 600 °C when the HAP content was raised to 20%. At 900 °C, the volatilization rates of Pb, Cr and Cu decreased by about 40.0%, 24.0% and 9.0%, respectively, while volatilization of Zn can be considered nearly unchanged at around 5%. The heavy metals can be stabilized effectively in the incineration after the pyromorphite-like minerals were formed in the sludge doped with HAP.
研究了羟磷灰石（HAP）对制革污泥焚烧过程中重金属挥发的抑制效果。将制革污泥用不同含量的 HAP 进行掺杂处理，然后在管式炉中于 600°C 和 900°C 下进行焚烧。结果表明，当 HAP 含量提高到 20%时，Pb、Zn、Cu 和 Cr 的挥发率分别降低了 10.19%、10.17%、7.40%和 5.33%。在 900°C 时，Pb、Cr 和 Cu 的挥发率分别降低了约 40.0%、24.0%和 9.0%，而 Zn 的挥发率可认为基本不变，约为 5%。在掺杂 HAP 的污泥中形成磷氯铅矿样矿物后，重金属在焚烧过程中可得到有效稳定。
