Graduate Students' Affairs Department, Northeast Electric Power University , Jilin, People's Republic of China.
College of Chemical and Environmental Engineering, Harbin University of Science and Technology , Harbin, People's Republic of China.
J Air Waste Manag Assoc. 2020 Jun;70(6):649-656. doi: 10.1080/10962247.2020.1754306.
Activated carbonaceous were prepared from high-carbon, abandoned straw biomass. With hydrogen sulfide gas as the target pollutant, single factor experiments were employed to assess the effects of activator type, activation temperature, activation time, and liquid-material ratio on the adsorption performance of the prepared carbonaceous adsorbent. The materials were characterized using elemental analysis, SEM, FTIR, and BET. The results showed -OH, -CH-, and -C = O groups exist on the surface of the prepared adsorbent, specific surface area can reach 1104.84 m•g, total pore volume can reach 0.261 cm•g and, where the pore volume is greater than 80%, well-developed pore structures were present that facilitated adsorption. The experimental results showed the adsorption time could reach 198 min with optimal ZnCl activator concentration (30%), carbonization temperature (550°C), and liquid-to-material ratio (3:1). Compared with the existing activated carbon adsorbents, the adsorption effects and preparation cost of this absorbent are advantageous, and the absorbent has prospects for broad market application.
Activated carbons were prepared from high-carbon, abandoned straw biomass. With hydrogen sulfide gas as the target pollutant, single factor experiments were employed to assess the effects of activator type, activation temperature, activation time, and liquid-material ratio on the adsorption performance of the prepared carbonaceous adsorbent. The materials were characterized using elemental analysis, SEM, FTIR, and BET. Compared with the existing activated carbon adsorbents, the adsorption effects and preparation cost of this absorbent are advantageous, and the absorbent has prospects for broad market application.
本研究采用富含碳的废弃秸秆生物质制备活性炭。以硫化氢气体为目标污染物，采用单因素实验考察了活化剂种类、活化温度、活化时间和液固比等因素对所制备的炭质吸附剂吸附性能的影响。采用元素分析、SEM、FTIR 和 BET 对材料进行了表征。结果表明，所制备的吸附剂表面存在-OH、-CH-和-C=O 基团，比表面积可达 1104.84 m²/g，总孔体积可达 0.261 cm³/g，其中孔体积大于 80%，具有发达的孔结构，有利于吸附。实验结果表明，最佳 ZnCl 活化剂浓度（30%）、碳化温度（550°C）和液固比（3:1）下，吸附时间可达 198 min。与现有的活性炭吸附剂相比，该吸附剂具有吸附效果好、制备成本低的优点，具有广阔的市场应用前景。
