【摘要】 以市政污泥为原料，ZnCl₂为活化剂，通过浸渍-热解法制备改性污泥生物炭（ASBC），通过构建ASBC/过一硫酸氢钾（PMS）体系并用于降解罗丹明B（RhB），探究ASBC投加量、PMS浓度、反应pH和共存无机阴离子等反应条件对ASBC/PMS体系降解RhB的影响。BET结果表明，经过活化后的生物炭的比表面积从8.19 m²/g提高至175.04 m²/g，孔容从0.017 cm³/g提高至0.189 cm³/g，活化后的污泥生物炭具备更多的反应活性位点；当ASBC投加量为0.2 g/L、PMS浓度为0.8 mmol/L，反应5 min后对RhB的去除率高达99.7%，反应可在较宽的pH范围（3～11）内发挥作用；H₂PO₄^-和NO₃^-对ASBC/PMS体系降解效果无显著影响，HCO₃^-具有抑制作用，Cl^-具有促进作用；ASBC/PMS体系降解RhB是非自由基路径，主要活性物质是¹O₂。更多还原

【Abstract】 In this study,modified sludge biochar（ASBC） was prepared by impregnation-pyrolysis method with municipal sludge as raw material and ZnCl₂ as activator.ASBC/Peroxymonosulfate（PMS） system was constructed and used to degrade Rhodamine B（RhB）.The effects of ASBC dosage,PMS concentration,reaction pH,and co-existing inorganic anions on the degradation of RhB in ASBC/PMS system were investigated.BET results showed that the specific surface area of activated biochar increased from 8.19 m²/g to 175.04 m²/g,pore volume increased from 0.017cm³/g to 0.189 cm³/g,and activated sludge biochar had more active sites.When the dosage of ASBC was 0.2 g/L and the concentration of PMS was 0.8 mmol/L,the removal rate of RhB was as high as 99.7%after 5 min reaction,and the reaction could work in a wide pH range（3-11）.H₂PO₄^-and NO₃^-had no significant effect on the degradation of ASBC/PMS system,HCO₃^-had inhibitory effect and Cl^-had promotional effect.RhB degradation by ASBC/PMS system was a non-radical pathway with ¹O₂ as the main active substance.更多还原