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| Amination of Enzymatic Hydrolysis Lignin and Adsorption Property Towards Congo Red Dye |
| Received:August 05, 2024 |
| DOI：10.11980/j.issn.0254-508X.2025.01.002 |
| Key Words:amination enzyme hydrolysis lignin adsorption Congo red dye |
| Fund Project:国家自然科学基金项目（22278072）；福建省自然科学基金（2021J01101，2022J01994）；国家级大学生创新创业项目（202310389014）。 |
| Author Name | Affiliation | Postcode | | MA Ziqiang | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province,350002 | 350002 | | LU Juan | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province,350002 | 350002 | | LIN Shukai | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province,350002 | 350002 | | LOU Chenfang | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province,350002 | 350002 | | TIAN Qinfen | College of Media and Exhibition, Fujian Business University, Fuzhou, Fujian Province,350012 | 350012 | | ZHUANG Jiandong* | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province,350002 | 350002 |
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| Abstract:In this study， enzymatic hydrolysis lignin （EHL） was modified via Mannich reaction to prepare aminating enzymatic hydrolysis lignin （NEHL）， which further improved its recognition and selective adsorption capacity of Congo red （CR） dye， and the preparation process was optimized. The results showed that the method could successfully graft amine groups on the surface of EHL， the microstructure of the modified NEHL had obvious changes， from a smooth surface to a rough surface， its surface was composed of a structure of irregular particles， and the specific surface area increased. The adsorption experiment results showed that the adsorption capacity of CR reached 2 444.82 mg/g when the dosage of NEHL was 0.05 g. At the same time， the adsorption kinetics and isotherm adsorption models of NEHL were analyzed， and it was concluded that NEHL could adsorb CR by single layer chemisorption. NEHL was a potential adsorbent for removing CR dye from wastewater due to its simple preparation process and superior dye-removing performance. |
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