| Title |
Super and selective adsorption of cationic dyes using carboxylate-modified lignosulfonate by environmentally friendly solvent-free esterification |
| ID_Doc |
10262 |
| Authors |
Tang, YF; Lin, TP; Ai, SJ; Li, YQ; Zhou, R; Peng, YZ |
| Title |
Super and selective adsorption of cationic dyes using carboxylate-modified lignosulfonate by environmentally friendly solvent-free esterification |
| Year |
2020 |
| Published |
|
| DOI |
10.1016/j.ijbiomac.2020.05.037 |
| Abstract |
Herein, following the strategy of sustainable, environment protection, circular economy development, carboxylate-modification lignosulfonate polymer (M-LSP) was synthesized from lignosulfonate by solvent-free esterifying with maleic anhydride (MA) by one step, and was used to remove the dyes by adsorption. FT-IR and XPS were used to confirm successful preparation of M-LSP. The result is that: M-LSP is apt W adsorb cationic dye. In single system, the super adsorption performance of M-LSP for methylene blue (MB) is depended on the carboxyl content in M-LSP. M-LSP performs its remarkable adsorption performance for MB stably at pH 7.0 similar to 10.0, and the maximum adsorption capacity of M-LSP for MB is up to 613.5 mg/g according to Langmuir isotherm model. The Langmuir isotherm and pseudo-second-order kinetic models are more suitable to desoipt adsorption process of M-LSP for MB. In binary and ternary system, the M-LSP adsorbs the cationic dyes simultaneously, but selectively adsorbs MB. M-LSP can effectively remove cationic dyes in simulate dyestuff water. Moreover, the removal percentage of regenerated M-LSP decreases only 8.4% after 4 desorption-resorption cycles. The results indicated that M-LSP could be a candidate for remediation of real printing and dyeing or textile wastewater containing cationic dyes. (C) 2020 Published by Elsevier B.V. |
| Author Keywords |
Lignosulfonate (LS); Adsorption; Methylene blue (MB); Maleic anhydride (MA); Cationic dyes |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000564253600010 |
| WoS Category |
Biochemistry & Molecular Biology; Chemistry, Applied; Polymer Science |
| Research Area |
Biochemistry & Molecular Biology; Chemistry; Polymer Science |
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