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Application of Thermally Treated Water Treatment Sludge as a Remarkable Adsorbent Towards Emerging Pollutant Removal from Aqueous Solution
Water, Air, & Soil Pollution ( IF 2.9 ) Pub Date : 2021-09-21 , DOI: 10.1007/s11270-021-05354-2
Patrícia Grassi 1 , Edson Luiz Foletto 1 , Guilherme Luiz Dotto 1 , Dison Stracke Pfingsten Franco 1 , Sérgio Luiz Jahn 1
Affiliation  

In this work, the application of thermally treated water treatment sludge on the adsorptive removal of acid red 97 dye, as well as on the treatment of a synthetic textile mixture, was evaluated. The material properties were obtained by different instrumental techniques. The calcined sludge presented mesoporous texture, and specific surface area of 60.2 m2 g−1. The pseudo-second-order model satisfactorily described the adsorption kinetics, while the Langmuir model was appropriate to describe the equilibrium data. A high adsorptive capacity of 4957 mg g−1 was found at 328 K. The thermodynamic investigation showed that the adsorption process is endothermic and spontaneous. There was a remarkable removal of several dyes contained in the synthetic mixture, corresponding to 74.4%. Therefore, the calcined sludge sample could be applied as a potential adsorbent in the treatment of colored wastewaters.



中文翻译:

热处理水处理污泥作为显着吸附剂在去除水溶液中新兴污染物中的应用

在这项工作中,评估了热处理水处理污泥在吸附去除酸性红 97 染料以及处理合成纺织品混合物方面的应用。材料特性是通过不同的仪器技术获得的。煅烧后的污泥呈介孔结构,比表面积为60.2 m 2  g -1。伪二级模型令人满意地描述了吸附动力学,而朗缪尔模型适合描述平衡数据。4957 mg g -1 的高吸附容量在 328 K 时发现。热力学研究表明吸附过程是吸热和自发的。合成混合物中含有的几种染料显着去除,相当于 74.4%。因此,煅烧后的污泥样品可以作为一种潜在的吸附剂处理有色废水。

更新日期:2021-09-21
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