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Kaur P, Kumar S, Rani J, Babu JN, Mittal S. Comparison of surface adsorption efficacies of eco-sustainable agro/animal biomass-derived activated carbon for the removal of rhodamine B and hexavalent chromium. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34686-9. [PMID: 39150669 DOI: 10.1007/s11356-024-34686-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 08/07/2024] [Indexed: 08/17/2024]
Abstract
Effective management and remediation strategies are crucial to minimize the impacts of both organic and inorganic contaminants on environmental quality and human health. This study investigates a novel approach utilizing cotton shell activated carbon (CSAC), rice husk activated carbon (RHAC), and wasp hive activated carbon (WHAC), produced through alkali treatment and carbonization under N2 atmosphere at 600 °C. The adsorption capacities of biomass-derived mesoporous activated carbons (CSAC, RHAC, WHAC) alongside macroporous commercial activated carbons (CAC) were evaluated for removing rhodamine B (Rh B) and hexavalent chromium (Cr6+). The CSAC exhibits remarkable adsorption efficiency (255.4 mg.g-1) for Cr(VI) removal, while RHAC demonstrates superior efficacy (174.2 mg.g-1) for Rh B adsorption. Investigating various optimal parameters including initial pH (pH 3 for Cr and pH 7 for Rh B), catalyst dosage (200 mg.L-1), and initial concentration (20 mg.L-1), the Redlich-Peterson isotherm model is applied to reveal a hybrid adsorption mechanism encompassing monolayer (chemisorption) and multilayer (van der Waals adsorption) processes. Kinetic analysis highlights the pseudo-second-order and Elovich models as the most suitable, suggesting physiochemisorption mechanisms. Thermodynamic analysis indicates the endothermic nature of the adsorption process, with increased randomness at the solid-solution interface. Isosteric heat investigations using Clausius-Clapeyron, Arrhenius, and Eyring equations reveal a heterogeneous surface nature across all activated carbons. Further confirmation of Rh B and Cr(VI) adsorption onto activated carbons is provided through FTIR, FESEM, and EDAX analysis. This study highlights the innovation and promise of utilizing biomass-derived activated carbons for effective pollutant removal.
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Affiliation(s)
- Parminder Kaur
- Department of Chemistry, Akal University, Talwandi Sabo, Bathinda, 151302, Punjab, India
| | - Sandeep Kumar
- Department of Chemistry, Akal University, Talwandi Sabo, Bathinda, 151302, Punjab, India.
| | - Jyoti Rani
- Department of Chemistry, Akal University, Talwandi Sabo, Bathinda, 151302, Punjab, India
| | - JNagendra Babu
- Department of Chemistry, School of Basic and Applied Science, Central University of Punjab, Bathinda, 151001, Punjab, India
| | - Sunil Mittal
- Department of Environment Science and Technology, Central University of Punjab, Bathinda, 151001, Punjab, India
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Kumari S, Chowdhry J, Kumar M, Garg MC. Machine learning (ML): An emerging tool to access the production and application of biochar in the treatment of contaminated water and wastewater. GROUNDWATER FOR SUSTAINABLE DEVELOPMENT 2024; 26:101243. [DOI: 10.1016/j.gsd.2024.101243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2024]
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He Z, Lin H, Sui J, Wang K, Wang H, Cao L. Seafood waste derived carbon nanomaterials for removal and detection of food safety hazards. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 929:172332. [PMID: 38615776 DOI: 10.1016/j.scitotenv.2024.172332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 03/19/2024] [Accepted: 04/07/2024] [Indexed: 04/16/2024]
Abstract
Nanobiotechnology and the engineering of nanomaterials are currently the main focus of many researches. Seafood waste carbon nanomaterials (SWCNs) are a renewable resource with large surface area, porous structure, high reactivity, and abundant active sites. They efficiently adsorb food contaminants through π-π conjugated, ion exchange, and electrostatic interaction. Furthermore, SWCNs prepared from seafood waste are rich in N and O functional groups. They have high quantum yield (QY) and excellent fluorescence properties, making them promising materials for the removal and detection of pollutants. It provides an opportunity by which solutions to the long-term challenges of the food industry in assessing food safety, maintaining food quality, detecting contaminants and pretreating samples can be found. In addition, carbon nanomaterials can be used as adsorbents to reduce environmental pollutants and prevent food safety problems from the source. In this paper, the types of SWCNs are reviewed; the synthesis, properties and applications of SWCNs are reviewed and the raw material selection, preparation methods, reaction conditions and formation mechanisms of biomass-based carbon materials are studied in depth. Finally, the advantages of seafood waste carbon and its composite materials in pollutant removal and detection were discussed, and existing problems were pointed out, which provided ideas for the future development and research directions of this interesting and versatile material. Based on the concept of waste pricing and a recycling economy, the aim of this paper is to outline current trends and the future potential to transform residues from the seafood waste sector into valuable biological (nano) materials, and to apply them to food safety.
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Affiliation(s)
- Ziyang He
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, Shandong Province, China
| | - Hong Lin
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, Shandong Province, China
| | - Jianxin Sui
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, Shandong Province, China
| | - Kaiqiang Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, Shandong Province, China
| | - Huiying Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, Shandong Province, China
| | - Limin Cao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, Shandong Province, China.
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Umar M, Khan H, Hussain S, Arshad M, Choi H, Lima EC. Integrating DFT and machine learning for the design and optimization of sodium alginate-based hydrogel adsorbents: Efficient removal of pollutants from wastewater. ENVIRONMENTAL RESEARCH 2024; 247:118219. [PMID: 38253197 DOI: 10.1016/j.envres.2024.118219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/01/2024] [Accepted: 01/14/2024] [Indexed: 01/24/2024]
Abstract
This study presents a novel approach to design and optimize a sodium alginate-based hydrogel (SAH) for efficient adsorption of the model water pollutant methylene blue (MB) dye. Utilizing density functional theory (DFT) calculations, sodium alginate-g-poly (acrylamide-co-itaconic acid) was identified with the lowest adsorption energy (Eads) for MB dye among 14 different clusters. SAHs were prepared using selected monomers and sodium alginate combinations through graft co-polymerization, and swelling studies were conducted to optimize grafting conditions. Advanced characterization techniques, including FTIR, XRD, XPS, SEM, EDS, and TGA, were employed, and the process was optimized using statistical and machine learning tools. Screening tests demonstrated that Eads serves as an effective predicting indicator for adsorption capacity (qe) and MB removal efficiency (RRMB,%), with reasonable agreement between Eads and both responses under given conditions. Process modeling and optimization revealed that 5 mg of selected SAH achieves a maximum qe of 3244 mg g-1 at 84.4% RRMB under pH 8.05, 98.8 min, and MB concentration of 383.3 mg L-1, as identified by the desirability function approach. Moreover, SAH effectively eliminated various contaminants from aqueous solutions, including sulfasalazine (SFZ) and dibenzothiophene (DBT). MB adsorption onto selected SAH was exothermic, spontaneous, and followed the pseudo-first-order and Langmuir-Freundlich isotherm models. The remarkable ability of SAH to adsorb MB is attributed to its well-designed structure predicted through DFT and optimal operational conditions achieved by AI-based parametric optimization. By integrating DFT-based computations and machine-learning tools, this study contributes to the efficient design of adsorbent materials and optimization of adsorption processes, also showcasing the potential of SAH as an efficient adsorbent for the abatement of aqueous pollution.
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Affiliation(s)
- Muhammad Umar
- Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Pakistan
| | - Hammad Khan
- Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Pakistan.
| | - Sajjad Hussain
- Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Pakistan
| | - Muhammad Arshad
- Department of Chemical Engineering, College of Engineering, King Khalid University, Abha, Saudi Arabia
| | - Hyeok Choi
- Department of Civil Engineering, The University of Texas at Arlington, 416 Yates Street, Arlington, TX, 76019-0308, USA
| | - Eder C Lima
- Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9500, PO. Box 15003, 91501-970, Porto Alegre, RS, Brazil
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Ouyang E, Wu M, He W, Liu H, Gui M, Yang H. Chitin/calcite composite extracted from shell waste as a low-cost adsorbent for removal of tetracycline and ciprofloxacin: Effects and mechanisms. CHEMOSPHERE 2024; 353:141503. [PMID: 38382718 DOI: 10.1016/j.chemosphere.2024.141503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 02/23/2024]
Abstract
Recently, water contamination caused by the misuse of antibiotics has become a growing concern. In this study, an economical chitin/calcite composite (CCA) was extracted from crab shell waste, and the effects and mechanisms of its removal of ciprofloxacin (CIP) and tetracycline (TC) from aqueous solution were investigated. The functional groups of chitin and the metal phase of calcite gave CCA the ability to remove antibiotics. Experiments on kinetics, isothermal adsorption, thermodynamics, co-removal, and reusability were conducted to systematically explore the adsorption performances of CCA toward antibiotics. The pseudo-second-order (FSO) and Langmuir models suited the data obtained from experiments best and displayed a good fit for the chemisorption and a certain homogeneity of adsorption sites. At 25 °C, the maximum adsorption capacities (Qmax) toward CIP and TC were 228.86 and 150.76 mg g-1, respectively. The adsorption mechanisms of CCA with TC and CIP are pH dependent since pH can affect the surface charge of CCA and the form in which CIP and TC are existing. The X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) demonstrated that the keto-O and carboxyl groups of CIP and the carbonyl, hydroxyl, and amido groups of TC could be responsible for the binding with the calcite and the functional groups of chitin through surface complexation, cation bridge and hydrogen bonding.
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Affiliation(s)
- Erming Ouyang
- School of Resources & Environment, Nanchang University, Nanchang, 330031, Jiangxi, China; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Mingming Wu
- School of Resources & Environment, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Wanyuan He
- School of Resources & Environment, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Haiyang Liu
- School of Resources & Environment, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Mengyao Gui
- School of Resources & Environment, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Hongwei Yang
- School of Resources & Environment, Nanchang University, Nanchang, 330031, Jiangxi, China; Engineering Research Center of Watershed Carbon Neutralization, Ministry of Education, Nanchang University, China.
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