| Title: | Biochar for volatile organic compound (VOC) removal: Sorption performance and governing mechanisms |
| Author(s): | Zhang X; Gao B; Zheng Y; Hu X; Creamer AE; Annable MD; Li Y; |
| Address: | "School of Environmental Engineering, Xuzhou University of Technology, Xuzhou 221000, PR China; Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle (Nanchang HangKong University), Nanchang 330063, PR China; Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA. Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, USA. Electronic address: bg55@ufl.edu. Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611, USA. State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering and Center of Material Analysis, 20 Hankou Road, Nanjing University, Nanjing 210093, PR China. School of Environmental Engineering, Xuzhou University of Technology, Xuzhou 221000, PR China. Tropical Research and Education Center, University of Florida, Homestead, FL 33031, USA" |
| DOI: | 10.1016/j.biortech.2017.09.025 |
| ISSN/ISBN: | 1873-2976 (Electronic) 0960-8524 (Linking) |
| Abstract: | "Sorption is one of the most efficient and low cost strategies for volatile organic compound (VOC) removal, but VOC sorption by biochar has seen limited research. In this work, gas phase sorption experiments were conducted to determine the sorption potential and mechanisms of VOCs onto biochar. A total of 15 biochars produced from 5 common feedstocks at 300, 450, and 600 degrees C were evaluated as sorbents. Three common VOCs (acetone, cyclohexane, and toluene) were chosen as sorbates. The results showed that all the tested biochars had VOC sorption capacity in the range of 5.58-91.2mgg(-1). The sorption capacities were mainly influenced by both the surface area of biochar and its noncarbonized organic matter content. The vapor sorption process was exothermic, and the removal of VOCs by the biochars decreased with increasing feedstock temperature. Both the physical adsorption and partition mechanisms played important roles in controlling the VOC removal by the biochars. Biochar maintained its VOC removal ability after five consecutive sorption-desorption cycles, which indicated good reusability. Findings of this work suggest that biochar is a promising alternative sorbent for gaseous VOC removal" |
| Keywords: | Adsorption *Charcoal *Volatile Organic Compounds Air pollution Biochar Partition Volatile organic compound; |
| Notes: | "MedlineZhang, Xueyang Gao, Bin Zheng, Yulin Hu, Xin Creamer, Anne Elise Annable, Michael D Li, Yuncong eng England 2017/09/15 Bioresour Technol. 2017 Dec; 245(Pt A):606-614. doi: 10.1016/j.biortech.2017.09.025. Epub 2017 Sep 5" |
