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Pyrolysis self-activation: An environmentally friendly method to transform biowaste into activated carbon for arsenic removal
Bioresource Technology ( IF 9.7 ) Pub Date : 2022-11-17 , DOI: 10.1016/j.biortech.2022.128353
Qi Gao 1 , Zixing Feng 1 , Yuyu He 1 , Yanmei Hou 1 , Hao Ren 1 , Mengfu Su 1 , Liangmeng Ni 1 , Zhijia Liu 1
Affiliation  

A green method for production of activated carbon and combustible gas was introduced. Without any external reagents and gases, the H2O and CO2 produced by the pyrolysis of bamboo shoot shells were used as activators. The prepared activated carbon had good arsenic adsorption properties with the maximum adsorption capacities of 10.9 mg/g for As(III) and 16.0 mg/g for As(V). The gaseous products were mostly CO and H2, with higher heating value of 11.7 MJ/Nm3. Thermogravimetric experiments were performed in N2, H2O and CO2 atmospheres to simulate the self-activation process and investigate the self-activation mechanism. This work will help to improve the competitiveness of self-activation technology and reduce the production cost of activated carbon.



中文翻译:

热解自活化:一种将生物废物转化为活性炭以去除砷的环保方法

介绍了一种生产活性炭和可燃气体的绿色方法。在没有任何外部试剂和气体的情况下,竹笋壳热解产生的H 2 O和CO 2作为活化剂。制备的活性炭具有良好的砷吸附性能,对 As(III) 的最大吸附容量为 10.9 mg/g,对 As(V) 的最大吸附容量为 16.0 mg/g。气态产物主要为CO和H 2,热值较高,为11.7 MJ/Nm 3。热重实验在 N 2、H 2 O 和 CO 2中进行气氛来模拟自激活过程并研究自激活机制。该工作将有助于提高自活化技术的竞争力,降低活性炭的生产成本。

更新日期:2022-11-19
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