摘要
文中主要探讨以亚麻废料制备活性炭的可行性。通过碳化和CO_2活化两个步骤制得的亚麻废料活性炭有很高的比表面积和总孔容积,说明材料多孔性较好。碳化过程能有效提高亚麻废料的碳含量,并形成一定的微孔。而CO_2活化则可以进一步提高活性炭的孔隙率,最终形成多孔材料。对活性炭最终得率、比表面积和孔容等进行综合分析比较,得出最佳的碳化温度为500℃,碳化时间为60 min,活化温度为800℃,活化时间为60 min。制得的活性炭基本为粉末状。对活性炭的重金属和有机物吸附性能比较则进一步表明,该活性炭吸附效果良好。
The feasibi lity of preparing activated carbon from flax waste was investigated. A two-step me th od , carbonization and C02 act ivat ion,was employed and the resultant activated carbon showed high specif ic surface area and total pore volume. Carbonization increased the carbon content of the flax waste while forming micropores. Then, activation by C02 was able to further improve the porosity of the activated carbon and created a porous material. The optimal carbonization temperature and time were 500 and 60 min while the optimal activation temperature and time were 800 and 60 min respectively in light of the yield, specif ic surface area and pore volumes etc. Particle size distribution indicated that prepared activated carbon was mainly powder. Study on the adsorption capacity for heavy metal and organics manifested that the carbon was ef fective in adsorption.
作者
何飞飞
陈维芳
张思嘉
徐辉
陆伟鹏
He Feifei;Chen Weifang;Zhang Sijia;Xu Hui;Lu Weipeng(School of Environment and Architecture , U n iv e r s i ty of S h a n g h a i f o r S c ie n c e a n d T e c h n o lo g y , S h a n g h a i 2 0 0 0 9 3 , C h i n)
出处
《净水技术》
CAS
2018年第4期82-86,115,共6页
Water Purification Technology
基金
上海市自然科学基金(14ZR1428900)
上海市科委能力建设项目(13230502300)
关键词
亚麻废料
活性炭
碳化
CO2活化
吸附能力
制备优化
flax waste activated carbon carbonization C02 activation adsorption capacity preparation optimization
