玉米秸秆制备活性炭吸附剂新工艺.pdf

Study on New Technology of Preparing Activated Carbon Adsorbents from Corn Stalks 陈亚伟 苗 娟 魏学锋 张 张鹏超 于 勇 ( 河南科技大学化工与制药学院环境工程系 洛阳 471003) 以 米秸秆为原料, 采用化学活化法制备活性炭吸附剂, 研究了料液比添加剂用量活化剂的浓度活化时 间活化温度等工艺条件, 探讨了浸泡时间和超声活化对产品收率和吸附性能的影响结果表明: 较佳的工艺条件为料液 比 12. 5活化剂浓度60% 添加剂用量6% 活化时间45 min活化温度400 超声浸泡可以大大缩短浸泡时间, 明显提 高产品的收率和吸附性能制备出的吸附剂吸附性能优于商业活性炭, 产品质量指标接近水质净化用活性炭标准 Abstract Taking cornsta k as raw materia , w e prepared activated carbon by adopting chemica activated method. Some techno ogi ca conditions w ere investigated such as the ratio of materia s and so ution, additives dosage, activator concentration , activation time, acti vation temperature. The resu ts show ed that optimum conditions w ere materia - to- so ution ratio 1: 2. 5 , additive concentration 60% , ac tivator dosage 6% , time 45 min and activation temperature 400 . Further more, we proposed the eff ects of soaking time on the product and found that u trasound activation can significant y improve product yie d and adsorption properties .The adsorption performance of se f - regu ating adsorbent is superior to commercia activated carbon, and product qua ity index is c ose to the activated carbon standard for w a ter purification. Key words Corn Stalks Activated Carbon Adsorbent Ultrasound , , , , , , 10 t/ a , , , , , , , , , , , , , , , , , , , , ,