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Tuning role and mechanism of paint sludge for characteristics of sewage sludge carbon: Paint sludge as a new macro-pores forming agent
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2017-11-07 , DOI: 10.1016/j.jhazmat.2017.11.012
Siyang Li , Jinxi Feng , Shuanghong Tian , Shenyu Lan , Chao Fan , Xiaosheng Liu , Ya Xiong

For the first time, paint sludge waste (PS) was used as a pore forming agent in the preparation of sewage sludge derived carbon (SC). The tuning role and mechanism of PS for characteristics of SC were explored. It was found that a sludge carbon (SCPS-Zn) with rich macro-, meso- and micro- porous could be produced by one-step pyrolytic process of sludge in the presence of PS and ZnCl2. Its surface area could reach as high as 680.5 m2 g−1 as 88.4 times and 4.8 times of sludge carbon without addition of PS and ZnCl2 (SC) and only addition of ZnCl2 (SCZn), respectively. The macro- pores fabricated by PS provided much inner-space for ZnCl2 to generate meso- and micro- porous, leading to a hierarchical porous structure. SCPS-Zn showed a high adsorption capacity of 685.4 mg g−1 for Chrysophenine, which is 1.3 and 1.7 times that of SCPS and SCZn respectively. The adsorption difference could be simply attributed to the fact that the great molecules were difficult to enter micro- pores of SCZn. It was also found that the difference was also dependent on orientation of Chrysophenine, which was related to pH value of solution.



中文翻译:

油漆污泥对污水污泥碳特性的调节作用和机理:油漆污泥作为新型大孔形成剂

涂料污泥废料(PS)首次用作制取污水污泥衍生碳(SC)的成孔剂。探讨了PS对SC特性的调节作用和机理。我们发现淤渣碳(SC PS-Zn系)具有丰富的宏观,中观和微观多孔可通过在PS和氯化锌的存在下污泥的一步法热解方法制备2.其表面积可以达到如在不添加PS和ZnCl 2(SC)且仅添加ZnCl 2(SC Zn)的情况下高达680.5 m 2  g -1,是污泥碳的88.4倍和4.8倍分别。PS制备的大孔为ZnCl 2提供了很多内部空间,从而产生了中孔和微孔,从而形成了分层的多孔结构。SC PS-Zn对金霉素的高吸附容量为685.4 mg g -1,分别是SC PS和SC Zn的1.3倍和1.7倍。吸附差异可以简单地归因于大分子难以进入SC Zn的微孔这一事实。还发现差异还取决于金霉素的取向,这与溶液的pH值有关。

更新日期:2017-11-10
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