摘要
模拟二甲胺的水体污染,采用静态实验装置,从吸附的热力学和动力学方向,讨论活性炭对水体中二甲胺的降解情况;同时讨论了Fenton氧化-活性炭联合法降解二甲胺的效果。结果表明,活性炭吸附二甲胺是一个放热自发的过程,在常温下吸附符合Langmuir的吸附等温模型,吸附速率较慢,在90 min左右才能够达到吸附平衡,同时,溶液的pH值越大,活性炭对二甲胺的吸附作用越明显;而Fenton氧化-活性炭联合法对高浓度的二甲胺溶液降解效果明显,当按H2O2 2.4 mL/L,FeSO.47H2O 12 mg/L,活性炭0.2 g/L的比例投加药剂时,二甲胺的去除率在99%以上,溶液COD的去除率达到81.6%。
Simulation of water pollution dimethylamine,a static test apparatus was used to discuss the activated carbon on degradation of dimethylamine in water from the direction of the adsorption thermodynamics and kinetics and Fenton-activated carbon degradation of the effects of dimethylamine.Result indicated that activated carbon adsorption of dimethylamine is a spontaneous exothermic process and consistent with Langmuir＇s adsorption isotherm model at room temperature.The adsorption rate is slow until about 90 minutes to reach the equilibrium.At the same time,the greater of the solution pH,the adsorption is more obivious.The degradation using Fenton-activated carbon method was significant for high concentration of dimethylamine solution.When the proportion of pharmaceutical dosage was dosinged by H2O2 2.4 mL/L,FeSO4·7H2O 12 mg/L,carbon 0.2g/L,the removal of dimethylamine in 99% and COD in 81.6% were reached.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2012年第2期148-153,共6页
Environmental Science & Technology
基金
国家科技重大专项"水体污染控制与治理"子课题:危险化学品应急控制措施研究(2009ZX07528-003-05)
