摘要
为了对石油化工废水净化处理后的废弃活性炭实现循环利用,提出了在无保护气体和活化气体条件下进行微波加热的方法。主要评估了再生温度和再生时间对再生活性炭的吸附性能和得率的影响。结果表明,在再生温度为600℃,再生时间为15 min时,活性炭的碘吸附能力达到最大值971 mg/g,得率为82.36%。再生活性炭比表面积高达1 028m2/g,总孔体积为1.23 m L/g,平均孔径为4.89 nm。通过废弃活性炭和再生活性炭进行了SEM对比分析,再生活性炭表面杂质减少,孔隙数量明显增多。
In order to achieve the purpose of recycling of spent activated carbon which was from purification of the petrochemical wastewater,the experiment put forward a method of utilizing microwave heating reproduction under the condition without protecting and activating gas. The effects of regeneration temperature and regeneration time were assessed on the adsorption ability and yield of regenerated activated carbon. Results show that iodine adsorption capacity is up to the maximum value of 971 mg / g and yield is 82. 36% when the regeneration temperature and regeneration time are 600℃ and 15 min,respectively. The BET surface area,total pore volume and average pore diameter of regenerated activated carbon are 1 028 m2/ g,1. 23 m L / g and 4. 89 nm,respectively. By the SEM analyses of spent and regenerated activated carbon,surface impurities of regenerated activated carbon decrease and pores increase obviously.
出处
《环境工程学报》
CAS
CSCD
北大核心
2015年第3期1209-1213,共5页
Chinese Journal of Environmental Engineering
基金
高等学校博士学科点专项科研基金新教师类资助课题(20115314120014)
昆明理工大学人才培养基金(KKSY201252077)
云南科技创新人才计划-科技领军人才(2013HA002)
关键词
活性炭
微波加热
碘吸附能力
比表面积
activated carbon
microwave heating
iodine adsorption capacity
surface area
