Designing degradable lignin-grafted magnetic nano-composite materials for cost-effectively sustainable removal of fluoroquinolone antibiotics from environmental water. (1st August 2022)

• Record Type: Journal Article
• Authors: Hou, Siyu; Zhang, Yuqi; Qin, Guowen; Song, Huilin; Shu, Chang; Zheng, Yang; Ji, Shunli
• Is Part Of: Journal of cleaner production. Volume 360(2022)
• Publication Date: 2022-08-01
• Subjects: Dealkaline lignin -- Magnetic nano-composite -- Fluoroquinolone antibiotics -- Water treatment -- Recycling; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2022.132215
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: Developing a novel green adsorbent to meet the requirements of low-cost, high quality of enrichment for analytes, and environmental sustainability is significant but remains a challenge. Herein, an eco-friendly dealkaline lignin-grafted magnetic iron oxide nanoparticle (Fe3 O4 @DAL) used as a dispersion solid adsorbent for the removal of fluoroquinolone antibiotics (FQs) from environmental water was developed based on the amide reactions between cost-effective plant-derived dealkaline lignin (DAL) and amino-functionalized Fe3 O4 nanoparticles at room temperature. Fe3 O4 @DAL combined with the advantages of lignin and magnetic nanoparticles, which had abundant functional groups (phenols and aliphatic hydroxyl, carboxyl, phenyl) and high separation efficiency, so typical FQs including pefloxacin (PEF), lomefloxacin (LOM), enrofloxacin (ENR) and difluoxacin (DIF) could be easily removed by multiple interactions. The Langmuir isotherm model and pseudo-second-order model could be more suitable to describe the adsorption process of FQs on Fe3 O4 @DAL. The maximum adsorption capacities of Fe3 O4 @DAL for PEF, LOM, ENR, DIF were 25.2 mg g −1, 19.2 mg g −1, 30.0 mg g −1, 33.7 mg g −1, respectively. And the total maximum adsorption capacities of four FQs could reach 108.2 mg g −1 . The whole adsorption process was spontaneous and endothermic based on thermodynamic data. Moreover, Fe3 O4 @DAL was of great reusability and could be used at least 5 cycles. In particular, the recycled adsorbent can be degraded as slow-release fertilizer under the action of soil microorganisms, which helps the growth of plants and further expands application range of lignin. As an effective, environmental-friendly, low-cost adsorbent for alleviating FQs contamination not only increased the added value of natural raw materials, but also had a great potential in the field of water treatment. Graphical abstract: Image 1 Highlights: The environment-friendly dealkaline lignin-grafted Fe3 O4 nanoparticles (Fe3 O4 @DAL) were first prepared. Multiple interactions resulting in highly efficient removal of FQs. Superior adsorption and reusability performance of Fe3 O4 @DAL were confirmed. The recovered Fe3 O4 @DAL could be degraded as fertilizer to help the growth of crops. Fe3 O4 @DAL increased added the value of natural raw materials.