The Use of Pyrolytic Char Derived from Waste Tires in the Removal of Malachite Green from Dyeing Wastewater

被引：2
|
作者：
Ji, Dongliang [1 ]
Gai, Didi [2 ]
Xu, Yikun [2 ]
Huang, Zhaoqin [1 ]
Zhao, Peitao [2 ]
机构：
[1] Jiangsu Open Univ, Coll Environm & Ecol, Nanjing 210036, Peoples R China
[2] China Univ Min & Technol, Sch Low Carbon Energy & Power Engn, Xuzhou 221116, Peoples R China
来源：
NANOMATERIALS | 2022年 / 12卷 / 23期
关键词：
waste tire; pyrolytic char; adsorption; malachite green; metal oxide catalyst; MESOPOROUS ACTIVATED CARBON; AQUEOUS-SOLUTION; CHEMICAL ACTIVATION; METHYLENE-BLUE; ADSORPTION; KINETICS; RUBBER; ADSORBENT; BEHAVIOR; PHENOL;
D O I：
10.3390/nano12234325
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The organic dye malachite green (MG) poses a potential risk of cancer and fertility loss in humans and aquatic organisms. This study focused on a modified pyrolytic char (PC) derived from waste tires to efficiently remove MG from wastewater. Modified PC has rich -OH functional groups, higher BET (Brunauer-Emmett-Teller) surfaces of 74.4, 64.95, and 67.31 m(2)/g, and larger pore volumes of 0.52, 0.47, and 0.62 cm(3)/g for NaOH, Na2CO3, and CaO modification, respectively. The pseudo-second-order model fit the adsorption well, and the maximum equilibrium adsorption capacity was 937.8 mg/g for PC after CaO activation (CaO-PC). NaOH-modified PC (NaOH-PC) showed the best fit with the Langmuir model (R-2 = 0.918). It is suggested that alkali-modified waste tire pyrolytic char could be a potential adsorbent for removing MG from dye-containing wastewater.
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页数：16
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