Effective tetracycline removal from liquid streams of dairy manure via hierarchical poly (vinyl alcohol-co-ethylene)/polyaniline metal complex nanofibrous membranes
| Autor: | Gang Sun, Pramod Pandey, Ahmed Y. El-Moghazy, Noha Amaly |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Vinyl alcohol
Nanofibers 02 engineering and technology 010402 general chemistry 01 natural sciences Biomaterials chemistry.chemical_compound Colloid and Surface Chemistry Adsorption Polyaniline Animals Aniline Compounds Ethylenes Tetracycline 021001 nanoscience & nanotechnology Anti-Bacterial Agents 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Manure Membrane Wastewater chemistry Chemical engineering Polyvinyl Alcohol Nanofiber Selective adsorption Leaching (metallurgy) 0210 nano-technology Water Pollutants Chemical |
| Zdroj: | Journal of Colloid and Interface Science. 597:9-20 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2021.03.165 |
| Popis: | Antibiotic residues from animal wastes enter underground and surface water streams, posing high risks to public health. Novel technologies capable of removing the residues from the matrix of concern such as animal waste should be developed. This research investigates the development of nanofiber absorbent for removing tetracycline (TC) antibiotic residues from liquid streams of dairy manure produced in a typical dairy farm. Hierarchically structured nanofibrous adsorbent was developed through growing a uniform polyaniline (PAni) nanodots on poly (vinyl alcohol-co-ethylene) (EVOH) nanofiber membrane (NFM). Moreover, Cu2+ ions were chelated on the developed EVOH/PAni-Cl NFM to improve TC adsorption efficiency and selectivity. The TC adsorption capacities of EVOH/PAni-Cl-Cu2+ and EVOH/PAni-Cl) NFM were 1100 mg g−1 and 600 mg g−1 within 120 min., respectively. The NFMs adsorption efficiency was investigated using dairy wastewater. Initial TC concentrations in dairy wastewater sample varied between 20 and 50 ppm. The EVOH/PAni-Cl-Cu2+ NFM showed TC removal of 86% from dairy manure samples at 25 ppm initial TC concentration within 60 min. during batch mode treatment. Results showed that the dynamic binding efficiency of 450 mg g−1 can be achieved at an initial TC concentration of 50 ppm. Furthermore, the NFM displayed efficient chemical and physical stability even after 8 cycles of reusing without significant changes in its performance or hazardous Cu2+ leaching. |
| Databáze: | OpenAIRE |
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