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Wang B, Mo Q, Qin B, Song L, Li J, Sheng G, Shi D, Xu X, Hou L. Adsorption behaviors of three antibiotics in single and co-existing aqueous solutions using mesoporous carbon. ENVIRONMENTAL RESEARCH 2022; 215:114375. [PMID: 36167111 DOI: 10.1016/j.envres.2022.114375] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 09/09/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
The residual antibiotics detected frequently in aquatic environment may pose a potential threat to human health and ecosystem. Exploring a possible way to remove them from antibiotic polluted-water is a key problem demanding prompt solution. To investigate their adsorption characteristics, three antibiotics including tetracycline (TC), ciprofloxacin (CIP), and sulfadiazine (SDZ) have been removed using sucrose-based mesoporous carbon (SMC) in single and co-existing systems. Characterization revealed that the SMC had a high Brunauer-Emmett-Teller (BET) surface area (1215.48 m2/g), large mesoporous pore size (6.36 nm), and abundant oxygen-containing functional groups, which might offer sufficient adsorption sites for antibiotics. The process of antibiotics adsorption was described well using pseudo-second-order model. The rate constant K2 at various temperatures followed the order 308 K > 298 K > 288 K. This finding suggesting the increase in temperature could promote the removal of antibiotics. The maximum adsorption capacities for TC (232.10 mg/g), CIP (257.30 mg/g), and SDZ (204.28 mg/g) of SMC were obtained using Langmuir isotherm (pH = 4-6, T = 308K, SMC dosage = 10 mg, C0 = 30-40 mg/L). These data implied SMC had the excellent adsorptive property and affinity to antibiotics. In binary systems, SMC offers efficient removal percentages (>90%) for each of the target antibiotic. While the removal efficiencies of TC, CIP, and SDZ by SMC in the ternary system were 90.40, 72.99, and 80.46%, respectively. These results suggested the competition on active sites of SMC happened among the three antibiotics. The affinities of SMC to three antibiotics followed the order TC > SDZ > CIP. The removal of antibiotics by SMC were mainly attributed to the mechanisms including electrostatic interactions, hydrophobic interactions, hydrogen bonding and so on. This study will provide a technical support for antibiotic wastewater treatment.
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Affiliation(s)
- Bin Wang
- College of Civil Engineering, Guizhou Provincial Key Laboratory of Rock and Soil Mechanics and Engineering Safety, Guizhou University, Guiyang, 550025, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China; Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Qianyuan Mo
- College of Civil Engineering, Guizhou Provincial Key Laboratory of Rock and Soil Mechanics and Engineering Safety, Guizhou University, Guiyang, 550025, China
| | - Bo Qin
- College of Civil Engineering, Guizhou Provincial Key Laboratory of Rock and Soil Mechanics and Engineering Safety, Guizhou University, Guiyang, 550025, China
| | - Lei Song
- College of Civil Engineering, Guizhou Provincial Key Laboratory of Rock and Soil Mechanics and Engineering Safety, Guizhou University, Guiyang, 550025, China
| | - Jiang Li
- College of Resources and Environmental Engineering, Guizhou University, Guiyang, 550025, China
| | - Guishang Sheng
- College of Civil Engineering, Guizhou Provincial Key Laboratory of Rock and Soil Mechanics and Engineering Safety, Guizhou University, Guiyang, 550025, China
| | - Dezhi Shi
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Xiaoyi Xu
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - Li'an Hou
- Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China; Xi'an High-Tech Institute, Xi'an, 710025, China
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Zhang Q, Cheng Y, Fang C, Shi J, Han H, Li M, Zhao J. Electrochemically enhanced adsorption of organic dyes from aqueous using a freestanding metal-organic frameworks/cellulose-derived porous monolithic carbon foam. BIORESOURCE TECHNOLOGY 2022; 347:126424. [PMID: 34838965 DOI: 10.1016/j.biortech.2021.126424] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/17/2021] [Accepted: 11/21/2021] [Indexed: 06/13/2023]
Abstract
Monolithic carbon foams are promising materials for adsorption due to the easy recyclability and without secondary-pollution. However, poor adsorption efficiency for organic pollutants limits its practical application. Hence, this work proposed a novel monolithic porous carbon foam by a facile carbonization approach as freestanding electrodes to remove the organic dyes. The prepared carbon foam derived from waste cigarette filters and zeolitic-imidazolate frameworks-8 with well-developed pores, and the calculated surface area is 1457 m2·g-1, and exhibited an outstanding removal efficiency for methylene blue in aqueous. The maximum adsorption capacity for methylene blue can reach up to 1846.7 mg·g-1 under the applied voltage of -1.2 V. Importantly, as-prepared carbon foams possessed excellent stability, and the removal efficiency can remain above 85% after 5 cycles. Thus, obtained porous carbon foams in this paper as a free standing electrode is expected to be promising materials of adsorbent besides supercapacitors.
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Affiliation(s)
- Qingling Zhang
- School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, PR China
| | - Youliang Cheng
- Faculty of Printing, Packaging Engineering and Digital Media, Xi'an University of Technology, Xi'an 710048, PR China.
| | - Changqing Fang
- School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, PR China; Faculty of Printing, Packaging Engineering and Digital Media, Xi'an University of Technology, Xi'an 710048, PR China.
| | - Jiayu Shi
- Faculty of Printing, Packaging Engineering and Digital Media, Xi'an University of Technology, Xi'an 710048, PR China
| | - Hanzhi Han
- School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, PR China
| | - Mengyao Li
- School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, PR China
| | - Jiarui Zhao
- School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, PR China
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