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- Title
Hydrothermal preparation of carbon adsorbent from 1,2-dichloroethane waste liquid assisted by nonylphenol ethoxylate.
- Authors
Xinying Yu; Wenqi Zhang; Ziyun Yao; Jiawei Wang
- Abstract
Chlorinated organic pollutants have been recognized as one of the major problems in the field of environmental engineering. In this work, 1,2-dichloroethane (DCE) waste liquid was used as feedstock to produce carbon adsorbent through the hydrothermal carbonization process. And the effects of nonylphenol ethoxylate (NP-10)/DCE mixing ratio, sulfuric acid initial concentration, and reaction time on the adsorption capacity of hydrochars at 180°C were investigated. Properties of the NP-10/DCE blended hydrochars were assessed by scanning electron microscopy, Brunauer-Emmett-Teller, and Fourier-transform infrared spectroscopy analysis. Experimental results show that the hydrochar obtained by using 50% DCE and 50% NP-10 with 71 wt.% sulfuric acid at 5 h demonstrated the best surface area (567.61 m2·g-1) and abundant functional groups. The methylene blue adsorption experiments indicated that the maximum adsorption capacity of the hydrochar was 440.49 mg·g-1, which was higher than that of commercial activated carbon (261.74 mg·g-1). This study provides a novel approach for the disposal of chlorinated organic waste liquids.
- Subjects
LIQUID waste; HYDROTHERMAL carbonization; ENVIRONMENTAL engineering; NONYLPHENOL; ORGANIC wastes; METHYLENE blue; CARBONIZATION
- Publication
Desalination & Water Treatment, 2023, Vol 311, p188
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2023.29977