摘要
制备出吸附效率更高、价廉易得的生物质碳材料具有十分重要的意义。以椰壳为原料,经过碱预处理后再高温碳化后得到中空椰壳生物质碳。碱活化碳化提供了丰富的含氧官能团、中空的大孔和粗糙结构。经过吸附实验后发现改性后的中空椰壳对25 ppm亚甲基蓝的去除率为96.09%。当pH从6.8调至10时,对亚甲基蓝的去除率仍高达94.85%。该研究为以后新的改性技术和染料废水的处理提供了有效的思路。
It is very important to prepare biomass carbon materials with higher adsorption efficiency and low price.Coconut shell as raw material,after alkali pretreatment and high temperature carbonization,hollow coconut shell biomass carbon was obtained.It was found that alkali-activated carbonization provided abundant oxygen-containing functional groups,large hollow pores and rough structure.After adsorption experiment,it was found that the adsorption capacity of 25 ppm methylene blue by modified hollow coconut shell could reach 96.09%.When pH was adjusted from 6.8 to 10,the adsorption capacity was still up to 94.85%.An effective idea was provided for the new modification technology and the treatment of dye waste water.
作者
张想泰
吴磊
韩得明
司杨
ZHANG Xiang-tai;WU Lei;HAN De-ming;SI Yang(Laboratory Management Office,Qinghai University,Qinghai Xining 810016;New Energy(Photovoltaic)Industry Research Center,Qinghai University,Qinghai Xining 810016;State Key Laboratory of Plateau Ecology and Agriculture,Qinghai University,Qinghai Xining 810016,China)
出处
《广州化工》
CAS
2023年第2期130-133,共4页
GuangZhou Chemical Industry
基金
青海省科技厅应用基础研究(2019-ZJ-7027)
青海大学省部共建三江源生态与高原农牧业国家重点实验室自主课题(2020-ZZ-05)。
关键词
生物质碳
椰壳
氢氧化钠
吸附
亚甲基蓝
biochar
coconut shell
sodium hydroxide
adsorption
methylene blue
