title: Kinetics and the mass transfer mechanism of hydrogen sulfide removal by biochar derived from rice hull.
abstract: The biochar derived from rice hull was evaluated for its abilities to remove hydrogen sulfide (H2S) from gas phase. The surface area and pH of the biochar were compared. The biochar derived from rice hull was evaluated for its abilities to remove hydrogen sulfide (H2S) from gas phase. The surface area and pH of the biochar were compared. The different pyrolysis temperature has great influence on the adsorption of H2S. At the different pyrolysis temperature, the H2S removal efficiency of rice hull-derived biochar was different. The adsorption capacities of biochar were 2.09 mg·g(-1), 2.65 mg·g(-1), 16.30 mg·g(-1), 20.80 mg·g(-1), and 382.70 mg·g(-1), which their pyrolysis temperatures were 100 °C, 200 °C, 300 °C, 400 °C and 500 °C respectively. Based on the Yoon-Nelson model, it analyzed the mass transfer mechanism of hydrogen sulfide adsorption by biochar.
  
  
  CONCLUSIONS
  The paper focuses on the biochar derived from rice hull-removed hydrogen sulfide (H2S) from gas phase. The surface area and pH of the biochar were compared. The different pyrolysis temperatures have great influence on the adsorption of H2S. At the different pyrolysis temperatures, the H2S removal efficiency of rice hull-derived biohar was different. The adsorption capacities of biochar were 2.09, 2.65, 16.30, 20.80, and 382.70 mg·g(-1), and their pyrolysis temperatures were 100, 200, 300, 400, and 500 °C, respectively. Based on the Yoon-Nelson model, the mass transfer mechanism of hydrogen sulfide adsorption by biochar was analyzed.
authors.affiliation: a Department of Environment and Resource , School of Agriculture and Biology, Shanghai Jiao Tong University , Shanghai , People's Republic of China.
authors.forename: Guofeng
authors.initials: G
authors.lastname: Shang
authors.affiliation: a Department of Environment and Resource , School of Agriculture and Biology, Shanghai Jiao Tong University , Shanghai , People's Republic of China.
authors.forename: Liang
authors.initials: L
authors.lastname: Liu
authors.affiliation: a Department of Environment and Resource , School of Agriculture and Biology, Shanghai Jiao Tong University , Shanghai , People's Republic of China.
authors.forename: Ping
authors.initials: P
authors.lastname: Chen
authors.affiliation: a Department of Environment and Resource , School of Agriculture and Biology, Shanghai Jiao Tong University , Shanghai , People's Republic of China.
authors.forename: Guoqing
authors.initials: G
authors.lastname: Shen
authors.affiliation: b Hunan Environmental Monitoring Center , Changsha , Hunan , People's Republic of China.
authors.forename: Qiwu
authors.initials: Q
authors.lastname: Li
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000517:prevention & control*; D002606:Charcoal / Q000737:chemistry*; D006862:Hydrogen Sulfide / Q000737:chemistry*; D007700:Kinetics; D012275:Oryza; D012639:Seeds / Q000737:chemistry
chemical_list: D000393:Air Pollutants; C540010:biochar; D002606:Charcoal; D006862:Hydrogen Sulfide