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- Title
Self-Nitrogen-Doped Biochar Derived from Soybean cake for Rhodamine B Removal Prepared via Simple Carbonization.
- Authors
Xinyu Zhang; Chao Yang; Tingwei Zhang; Jiaqi Guo; Yusheng Gan; Haibiao Wu; Khan, Mohammad Rizwan; Huining Xiao; Junlong Song
- Abstract
Nitrogen-doped biochar performs much better in dye adsorption due to its rich functional groups. Soybean cake, a by-product of soybean oil production, comprises rich contents of cellulose, lignin, and protein. Therein, simple direct carbonization was utilized to prepare self-nitrogendoped biochar (SCB). The results showed that the N content of SCB was 6.81 wt%, and its specific surface area was 18.8 m2/g. X-ray photoelectron spectroscopic results confirmed that the surface of SCB was rich in pyridine-N, pyrrole-N, graphite-N, and oxidized-N functional groups. The adsorption capacity of SCB for Rhodamine B was 17.2 mg/g, which is higher compared with other unactivated biochars. The results of thermodynamic parameters indicate that Rhodamine B adsorption on SCB is an endothermic, entropy-increasing, and spontaneous process.
- Subjects
RHODAMINE B; BIOCHAR; CARBONIZATION; SOYBEAN; SOY oil; METHYLENE blue
- Publication
BioResources, 2023, Vol 18, Issue 4, p7460
- ISSN
1930-2126
- Publication type
Article
- DOI
10.15376/biores.18.4.7460-7473