摘要
以泡沫铜作为催化剂与超声波耦合降解罗丹明B溶液,分别考察了H2O2投加量、溶液初始pH以及超声功率对罗丹明B降解效果的影响。结果表明,在H_2O_2的投加量为5.0 mmol/L、超声功率300 W、溶液初始pH为3.0的条件下,初始质量浓度为5 mg/L的罗丹明B溶液反应25 min,去除率为99.41%,比超声单独作用相比,增加了86.75个百分点。理论分析显示,超声-泡沫铜耦合体系通过羟基自由基氧化和泡沫铜还原协同降解罗丹明B。
In the paper, rhodamine B（Rh B） was degraded by ultrasound-assisted Fenton-like process with the foam copper as the catalyst. The influencing factors, such as initial pH, the dosage of H_2O_2 and ultrasound power are studied. The results manifest that the optimum conditions： initial pH=3, dosage of H_2O_2 5.0 mmol/L, ultrasound power 300 W, ultrasound time 25 min. Under above conditions, the degradation of RhB was 99.41%, which improved by 86.75 percentage points compared with ultrasound alone. Meanwhile, it indicates that the degradation of RhB follows the oxidation of hydroxyl radicals and the reduction of foamy copper.
出处
《水处理技术》
CAS
CSCD
北大核心
2016年第5期51-55,共5页
Technology of Water Treatment
基金
国家科技重大专项(2013ZX07201007)
