论文部分内容阅读
基于价格低廉、供应充足及以废治废的优点,对兰炭末的吸附性能进行了研究。兰炭末属于低温炼焦兰炭生产过程中不成形物。吸附后的兰炭末不经脱附可直接替代燃煤进行燃烧或造合成气,无二次污染物排放。采用静态吸附法研究了废水中三聚甲醛(TOX)在兰炭末上的吸附性能。探讨了兰炭末对TOX的吸附等温线、吸附动力学模型,考察了TOX初始浓度和p H值对吸附效果的影响。结果表明,兰炭对TOX吸附等温线符合Freundlich吸附等温式;兰炭末对TOX的吸附符合准二级动力学方程;TOX的去除率随初始浓度和p H的增大均降低,但降低程度不大。
Based on the advantages of low cost, adequate supply, and waste treatment, the adsorption properties of blue charcoal powder were studied. Blue charcoal belongs to the low temperature coke charcoal production process is not formed. Adsorbed blue carbon without desorption directly substituting coal for combustion or syngas, no secondary pollutant emissions. Static adsorption was used to study the adsorption of paraformaldehyde (TOX) on the ends of blue carbon in waste water. The adsorption isotherms and adsorption kinetics models of TOX were investigated. The effects of initial concentrations of TOX and p H on the adsorption were investigated. The results showed that the adsorption isotherms of TOX on blue carbon were in accordance with the Freundlich adsorption isotherm. The adsorption of TOX on the charcoals at the end of blue carbon was in accordance with the quasi-second-order kinetic equation. The removal rate of TOX decreased with the increase of initial concentration and p H, Not big.