| Title: | Development of ultra-high surface area polyaniline-based activated carbon for the removal of volatile organic compounds from industrial effluents |
| Author(s): | Choi JS; Lim SH; Lingamdinne LP; Park SY; Koduru JR; Yang JK; Chang YY; |
| Address: | "Department of Environmental Engineering, Kwangwoon University, Seoul, 01897, Republic of Korea. Department of Environmental Engineering, Kwangwoon University, Seoul, 01897, Republic of Korea. Electronic address: reddyjchem@gmail.com. Department of Environmental Engineering, Kwangwoon University, Seoul, 01897, Republic of Korea. Electronic address: yychang@kw.ac.kr" |
| DOI: | 10.1016/j.envpol.2023.122594 |
| ISSN/ISBN: | 1873-6424 (Electronic) 0269-7491 (Linking) |
| Abstract: | "Removing volatile organic compounds (VOCs) from aqueous solutions is critical for reducing VOC emissions in the environment. Activated carbons are widely used for removal of VOCs from water. However, they show less application feasibility and low removal due to less surface area. Here, a cost-effective and high surface area activated carbonized polyaniline (ACP) was synthesized to sustainable removal of VOCs from water. The ACP microstructure, surface properties, and pore structure were investigated using Brunauer-Emmett-Teller (BET) theory, Scanning Electron Microscopy (SEM), and Transmission Electron Microscopy (TEM). The specific surface area of ACP(6:1) (2988.13 m(2)/g) was greater than that of commercial activated carbon (PAC) (1094.49 m(2)/g), indicating that it has excellent VOC adsorption capacity. The effects of pH, initial VOC concentration, time, temperature, and ionic strength were studied. According to kinetic and thermodynamic studies on VOCs adsorption, it is an exothermic and spontaneous process involving rate-limiting kinetics. Adsorption isotherms follow the Freundlich isotherm model, suggesting that the adsorbent surface is heterogeneous with multilayer adsorption and maximum ACP adsorption capacities of 1913.9, 2453.3, 1635.8, and 3327.0 mg/g at 293 K for benzene, toluene, ethylbenzene, and perchloroethylene, respectively, representing a 3- to 5-fold improvement over PAC. ACP is a promising adsorbent with a high adsorption efficiency for VOC removal" |
| Keywords: | Adsorption Chemical activation Polyaniline Ultrahigh surface area material VOC treatment; |
| Notes: | "PublisherChoi, Jong-Soo Lim, Seon-Hwa Lingamdinne, Lakshmi Prasanna Park, Se-Yeon Koduru, Janardhan Reddy Yang, Jae-Kyu Chang, Yoon-Young eng England 2023/09/25 Environ Pollut. 2023 Sep 22; 337:122594. doi: 10.1016/j.envpol.2023.122594" |
