Preparation of the sludge activated carbon with domestic sludge mixed agricultural straw

1st International Conference on New Material and Chemical Industry

材料科学;化学工业

Wang, Laifu^1 ; Wang, Yan^1 ; Lian, Jingyan^1

Tianjin University of Technology, Tianjin

300384, China^1

关键词: Activator concentration;    Agricultural straw;    Focus of Attention;    Orthogonal experiment;    Pollution problems;    Process condition;    Resource utilizations;    Solid-liquid ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/167/1/012004/pdf
DOI  :  10.1088/1757-899X/167/1/012004

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Urban sewage sludge with complicated composition produce largely each year, pollution problem and resource utilization has increasingly become the focus of attention. Sewage sludge is utilized to prepare adsorbent that is a new type method. Agricultural stalks was added to material (urban sewage sludge) and activator (ZnCl2), calcined under the condition of no inert gas, and obtained domestic sludge activated carbon. The properties were measured by iodine adsorption value and BET, discussed influence factors of sludge activated carbon preparation, including activator concentration, solid-liquid ratio, calcific temperature and calcific time. The best process condition of orthogonal experiment had explored that activated time is 10 minutes, calcific temperature is 350°C, the activator concentration ZnCl2is 3 mol/L and the mixing ratio of raw materials and activator is approximately 1:5. The iodine adsorption value and the optimal BET of as-obtained domestic sludge activated carbon is 445.06 mg/g, 525.31m2/g, respectively.