改性柚子皮生物炭催化过硫酸盐降解盐酸四环素的研究  

Degradation of Tetracycline Hydrochloride by Persulfate Catalyzed by Modified Pomelo Peel Biochar

作　　者：徐清艳 Xu Qingyan(Materials and Chemical Engineering College of Minjiang University,Fuzhou 350108,China)

机构地区：[1]闽江学院材料与化学工程学院,福建福州350108

出　　处：《广东化工》2021年第23期16-18,共3页Guangdong Chemical Industry

基　　金：福建省自然科学基金项目(项目编号2018J01434)。

摘　　要：以废弃柚子皮为生物质制备生物炭,经过KOH进行改性后,将得到的改性柚子皮生物炭催化过硫酸钠(PS)降解盐酸四环素。采用SEM进行性能表征,探讨了不同体系对降解盐酸四环素的影响,考察了生物炭用量、PS用量、pH、盐酸四环素初始浓度和不同无机离子等因素对降解盐酸四环素的影响。实验结果表明:在pH值为4,使用0.3 g改性生物炭和0.2 g PS降解50 mL浓度为25 mg/L的盐酸四环素的条件下,反应120 min盐酸四环素的降解率最高可达96.7%。HCO_(3)^(-)极大地抑制盐酸四环素的降解,Cl^(-)和NO_(3)^(-)对降解盐酸四环素的影响效果较小。Biochar was prepared from waste pomelo peel,which was modified by KOH.The modified pomelo peel biochar was used to catalyze the degradation of tetracycline hydrochloride by sodium persulfate(PS).The effects of different systems on the degradation of tetracycline hydrochloride were investigated by SEM.The effects of biochar dosage,PS dosage,pH,initial concentration of tetracycline hydrochloride and different inorganic ions on the degradation of tetracycline hydrochloride were investigated.The experimental results showed that:When pH value was 4,50 mL of 25 mg/L tetracycline hydrochloride was degraded with 0.3 g modified biochar and 0.2 g sodium persulfate,the maximum degradation rate could reach 96.7%within 120 minutes.HCO_(3)^(-)greatly inhibited the degradation of tetracycline hydrochloride,while Cl^(-)and NO_(3)^(-)had little effect on the degradation of tetracycline hydrochloride.

关 键 词：改性KOH 柚子皮生物炭 过硫酸盐 降解 盐酸四环素 

分 类 号：X703[环境科学与工程—环境工程]