Industrial Water Treatment ›› 2025, Vol. 45 ›› Issue (1): 79-86. doi: 10.19965/j.cnki.iwt.2023-1263

• RESEARCH AND EXPERIMENT • Previous Articles     Next Articles

Degradation of Rhodamine B by manganese residue activated peroxymonosulfate

Guoqing ZHENG1(), Yukun HUANG1, Yaocong HAN1,2,3(), Xingyong XUE1,2, Yanyue LU1,2, Lihong LAN1,2, Zhennan CHEN3   

  1. 1. School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
    2. Guangxi Key Laboratory of Polysaccharide Materials and Modification, Nanning 530006, China
    3. Geely Baikuang Group Co. , Ltd. , Baise 533000, China
  • Received:2024-11-11 Online:2025-01-20 Published:2025-01-22

锰渣活化过一硫酸盐降解罗丹明B

郑国庆1(), 黄煜坤1, 韩要丛1,2,3(), 薛兴勇1,2, 卢彦越1,2, 蓝丽红1,2, 陈贞南3   

  1. 1. 广西民族大学化学化工学院,广西 南宁 530006
    2. 广西多糖材料与改性重点实验室,广西 南宁 530006
    3. 吉利百矿集团有限公司,广西 百色 533000
  • 作者简介:

    郑国庆(1997— ),硕士研究生。E-mail:

    韩要丛,博士。E-mail:

  • 基金资助:
    广西民族大学科研基金项目(2020KJQD15); 崇左市科技计划项目(崇科2023ZY0502); 广西民族大学自治区级大学生创新创业训练计划项目(S202210608146); 2022年度广西高校中青年教师科研基础能力提升项目(2022KY0160)

Abstract:

Manganese residue was used to activate peroxymonosulfate(PMS) for Rhodamine B(RhB) degradation. The physichemical properties of manganese residue were analyzed by X-ray diffractometer, specific surface area and porosity analyzer and Fourier transform infrared spectrometer. The effects of manganese residue dosage, PMS concentration, temperature, pH, and RhB concentration of the solution on RhB degradation were studied. The reusability of manganese residue and mechanism of RhB degradation using PMS activated by manganese residue were also investigated. The results showed that manganese residue used in this study contained abundant Fe3O4, with a saturation magnetization of 8.67 emu/g and a specific surface area of 29.95 m2/g. The pores in manganese residue were predominantly mesoporous. The removal rate of RhB could reach 97.6% at 120 min under the conditions of temperature of 25 ℃, RhB concentration of 20 mg/L, manganese residue dosage of 2.0 g/L, PMS concentration of 0.50 mmol/L, pH of 4.9, and still could maintain 84.2% after 5 cycles. In the degradation process, 1O2, O2 ·- and ·OH were all involved in the reaction, with 1O2 playing a dominant role.

Key words: manganese residue, Rhodamine B, peroxymonosulfate, advanced oxidation process, catalytic degradation

摘要:

将锰渣用于活化过一硫酸盐(PMS)降解罗丹明B(RhB)。采用X射线衍射仪、振动样品磁强计、比表面积及孔隙度分析仪、傅里叶红外光谱仪分析了锰渣的理化性质,研究了锰渣投加量、PMS浓度、反应温度、溶液初始pH及RhB浓度等工艺条件对RhB降解效果的影响,考察了锰渣的循环使用性能,同时探讨了锰渣活化PMS降解RhB的机理。结果表明,所用锰渣富含Fe3O4,饱和磁化强度为8.67 emu/g,比表面积为29.95 m2/g,且锰渣中的孔以介孔为主。在反应温度为25 ℃,RhB初始质量浓度为20 mg/L,锰渣投加量为2.0 g/L,PMS浓度为0.50 mmol/L,pH=4.9条件下,反应120 min时体系对RhB的去除率为97.6%,且循环使用5次后,RhB去除率依然可达84.2%。在锰渣活化PMS降解RhB的过程中,1O2、O2 ·-和·OH均参与了反应,其中1O2起主导作用。

关键词: 锰渣, 罗丹明B, 过一硫酸盐, 高级氧化, 催化降解

CLC Number: