International Journal of Phytoremediation 2013-01-01

Emission and control characteristics for incineration of Sedum plumbizincicola biomass in a laboratory-scale entrained flow tube furnace.

Longhua Wu, Daoxu Zhong, Yingzhe Du, Shengyong Lu, Dengqiang Fu, Zhu Li, Xiaodong Li, Yong Chi, Yongming Luo, Jianhua Yan

Index: Int. J. Phytoremediation 15(3) , 219-31, (2013)

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Abstract

Experiments were conducted to investigate and control pollutant emission from incineration of Sedum plumbizincicola plants on a laboratory scale using an entrained flow tube furnace. Without control technologies, the flue gas contained 0.101 mg Nm(-3) of Cd, 46.4 mg Nm(-3) of Zn, 553 mg Nm(-3) of NOx, 131 pg Nm(-3) of polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran (PCDD/Fs) and 35.4 mg Nm(-3) of polycyclic aromatic hydrocarbons (PAHs). In pollutants control experiments. Al2O3, CaO, and kaolin were compared as adsorbents and activated carbon was used as an end-of-pipe method for the capture of pollutants. Kaolin, the most effective of the three adsorbents, removed 91.2% of the Cd in flue gas. While 97.6% of the Cd and 99.6% of the PAHs were removed by activated carbon. Incineration may therefore be regarded as a viable option for the safe disposal of the biomass of the zinc and cadmium hyperaccumulator species S. plumbizincicola.