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.

引用

页数：16

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