Tetracycline Adsorption Performance and Mechanism Using Calcium Hydroxide-Modified Biochars
Tetracycline is frequently found in various environments and poses significant ecological risks. Calcium hydroxide-modified biochar has shown potential as a material for removing multiple classes of pollutants from wastewater streams. The tetracycline-adsorption performance and mechanism of alkali-m...
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| Format: | Article |
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MDPI AG
2023-10-01
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| Series: | Toxics |
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| Online Access: | https://www.mdpi.com/2305-6304/11/10/841 |
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| author | Kaifeng Wang Runlin Yao Dongqing Zhang Na Peng Ping Zhao Yongming Zhong Haijun Zhou Jiahui Huang Chen Liu |
| author_facet | Kaifeng Wang Runlin Yao Dongqing Zhang Na Peng Ping Zhao Yongming Zhong Haijun Zhou Jiahui Huang Chen Liu |
| author_sort | Kaifeng Wang |
| collection | DOAJ |
| description | Tetracycline is frequently found in various environments and poses significant ecological risks. Calcium hydroxide-modified biochar has shown potential as a material for removing multiple classes of pollutants from wastewater streams. The tetracycline-adsorption performance and mechanism of alkali-modified biochars derived from nine wastes (corn straw, rice straw, swine manure, cypress powder, wheat straw, peanut shell, walnut shell powder, soybean straw, and corncobs) were investigated in the study. Among the four alkalis tested, calcium hydroxide exhibited the most effective modification effects at a pyrolysis temperature of 500 °C. Straw biomass was most suitable to be modified by calcium hydroxide, and calcium hydroxide-modified biochar showed the highest adsorption performance for tetracycline. The maximum adsorption capacities were 8.22 mg g<sup>−1</sup> for pristine corn straw biochar and 93.46 mg g<sup>−1</sup> for calcium hydroxide-modified corn straw biochar. The tetracycline adsorption mechanism by calcium hydroxide-modified corn straw biochar involved hydrogen bonding, oxygen-containing functional groups, Ca<sup>2+</sup> metal complexation, and electrostatic attraction. Consequently, calcium hydroxide-modified corn straw biochar emerges as an environment-friendly, cost-effective, and efficient tetracycline adsorbent. |
| first_indexed | 2024-03-10T20:50:57Z |
| format | Article |
| id | doaj.art-52e627f9d2ff40eca4c639e753edeef3 |
| institution | Directory Open Access Journal |
| issn | 2305-6304 |
| language | English |
| last_indexed | 2024-03-10T20:50:57Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Toxics |
| spelling | doaj.art-52e627f9d2ff40eca4c639e753edeef32023-11-19T18:21:45ZengMDPI AGToxics2305-63042023-10-01111084110.3390/toxics11100841Tetracycline Adsorption Performance and Mechanism Using Calcium Hydroxide-Modified BiocharsKaifeng Wang0Runlin Yao1Dongqing Zhang2Na Peng3Ping Zhao4Yongming Zhong5Haijun Zhou6Jiahui Huang7Chen Liu8Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, ChinaBathurst Future Agri-Tech Institute, Qingdao Agricultural University, Qingdao 266109, ChinaGuangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, ChinaGuangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, ChinaGeological Party 105, Guizhou Provincial Bureau of Geology and Mineral Exploration and Development, Guiyang 550018, ChinaGuangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, ChinaGuangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, ChinaGuangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, ChinaGuangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, ChinaTetracycline is frequently found in various environments and poses significant ecological risks. Calcium hydroxide-modified biochar has shown potential as a material for removing multiple classes of pollutants from wastewater streams. The tetracycline-adsorption performance and mechanism of alkali-modified biochars derived from nine wastes (corn straw, rice straw, swine manure, cypress powder, wheat straw, peanut shell, walnut shell powder, soybean straw, and corncobs) were investigated in the study. Among the four alkalis tested, calcium hydroxide exhibited the most effective modification effects at a pyrolysis temperature of 500 °C. Straw biomass was most suitable to be modified by calcium hydroxide, and calcium hydroxide-modified biochar showed the highest adsorption performance for tetracycline. The maximum adsorption capacities were 8.22 mg g<sup>−1</sup> for pristine corn straw biochar and 93.46 mg g<sup>−1</sup> for calcium hydroxide-modified corn straw biochar. The tetracycline adsorption mechanism by calcium hydroxide-modified corn straw biochar involved hydrogen bonding, oxygen-containing functional groups, Ca<sup>2+</sup> metal complexation, and electrostatic attraction. Consequently, calcium hydroxide-modified corn straw biochar emerges as an environment-friendly, cost-effective, and efficient tetracycline adsorbent.https://www.mdpi.com/2305-6304/11/10/841biocharcalcium hydroxideagricultural and forestry wastestetracyclineadsorption |
| spellingShingle | Kaifeng Wang Runlin Yao Dongqing Zhang Na Peng Ping Zhao Yongming Zhong Haijun Zhou Jiahui Huang Chen Liu Tetracycline Adsorption Performance and Mechanism Using Calcium Hydroxide-Modified Biochars Toxics biochar calcium hydroxide agricultural and forestry wastes tetracycline adsorption |
| title | Tetracycline Adsorption Performance and Mechanism Using Calcium Hydroxide-Modified Biochars |
| title_full | Tetracycline Adsorption Performance and Mechanism Using Calcium Hydroxide-Modified Biochars |
| title_fullStr | Tetracycline Adsorption Performance and Mechanism Using Calcium Hydroxide-Modified Biochars |
| title_full_unstemmed | Tetracycline Adsorption Performance and Mechanism Using Calcium Hydroxide-Modified Biochars |
| title_short | Tetracycline Adsorption Performance and Mechanism Using Calcium Hydroxide-Modified Biochars |
| title_sort | tetracycline adsorption performance and mechanism using calcium hydroxide modified biochars |
| topic | biochar calcium hydroxide agricultural and forestry wastes tetracycline adsorption |
| url | https://www.mdpi.com/2305-6304/11/10/841 |
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