Energetic and environmental optimizations and byproduct valorization of pyrolysis of textile dyeing sludge with FeCl3
Energetic and environmental optimizations and byproduct valorization of pyrolysis of textile dyeing sludge with FeCl3
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DOI：
10.1016/j.jclepro.2023.139940
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发表时间：
2023-11
影响因子：
11.1
通讯作者：
Haoyu Guan;Li Wang;Jingyong Liu;F. Evrendilek;Zhibin Chen;Shengzheng Huang;Sheng Zhong;Zuoyi Yang
中科院分区：
文献类型：
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作者：
Haoyu Guan;Li Wang;Jingyong Liu;F. Evrendilek;Zhibin Chen;Shengzheng Huang;Sheng Zhong;Zuoyi Yang
最大限度地实现危险废物的循环经济是不超越地球生物化学极限的必要措施之一。研究了N2和CO2气氛下添加FeCl 3调理剂对印染污泥热解的影响。在20 °C/min下，FeCl 3的加入使N2气氛下的综合热解指数（CPI 600）从1.05降低到0.42，使CO2气氛下的CPI 600从0.71降低到0.41。无论热解气氛的类型，有或没有FeCl 3，所有的TDS热解释放CO，CO2，CH 4，芳烃，NH3，和SO2。热解副产物主要为氮化物和烃类，以乙醇胺（C2 H7 NO）和苯（C6 H6）为代表。添加4%FeCl3不仅有利于热解过程中氮化物向碳氢化合物的转化，而且能实现最佳的能量性能和减排效果。我们的研究结果为TDS热解过程中的副产品价值和污染控制以及促进碳捕获，利用和储存提供了新颖和可操作的见解。
Maximizing the circular economy of hazardous wastes is one of the imperatives not to overshoot the biogeochemical limits of Earth. This study aimed to characterize and valorize the textile dyeing sludge (TDS) pyrolysis in response to the addition of FeCl3conditioner in the N2and CO2atmospheres. The increase fraction of FeCl3decreased comprehensive pyrolysis index (CPI600) from 1.05 to 0.42 in the N2atmosphere and from 0.71 to 0.41 in the CO2atmosphere at 20 °C/min. The addition of FeCl3diminished the pyrolysis performance, with a more pronounced inhibitory effect occurring in the N2atmosphere than in the CO2atmosphere. Regardless of the type of pyrolysis atmosphere, with or without FeCl3, all the TDS pyrolysis released CO, CO2, CH4, aromatics, NH3, and SO2. The main pyrolytic byproducts were nitrides and hydrocarbons, represented by ethanolamine (C2H7NO) and benzene (C6H6). Not only did 4 % FeCl3addition facilitate the transformation of nitrides into hydrocarbons during the pyrolysis, but it also achieved the optimal energetic performance and emission reduction. Our findings provide novel and actionable insights into the byproduct valorization and pollution control during the TDS pyrolysis and the promotion of carbon capture, utilization, and storage.