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Vishali S, Mullai P, Mahboob S, Al-Ghanim K, Sivasankar A. Elucidation the influence of design variables on coagulation-flocculation mechanisms in the lab-scale bio-coagulation on toxic industrial effluent treatment. ENVIRONMENTAL RESEARCH 2022; 212:113224. [PMID: 35405132 DOI: 10.1016/j.envres.2022.113224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/26/2022] [Accepted: 03/29/2022] [Indexed: 06/14/2023]
Abstract
Bio-coagulants are environmentally friendly substances that have shown potential in removing organic and inorganic contaminants from wastewater from the Imitation Paint Industry. Under the optimized conditions, the use of the three bio-coagulants (of plant origin), Strychnos potatorum, Cactus opuntia and Portunus sanguinolentus (crab) shell (of animal origin) were evaluated, and their removal mechanism was based on kinetic models and adsorption isotherms. The error analysis method was used to find the best isotherm fit. In addition, the kinetic model parameters showed the absence of chemisorption and confirmed the existence of pore diffusion. The interaction between coagulant and pollutant, the type, homogeneity and intensity of the coagulation process, the pollutant absorption capacity of the coagulant were evaluated with the aid of the adsorption isotherm models. From the Pseudo first-order kinetic model an equilibrium pollutant uptake (mg/g) was marked as 598, 554 and 597 for Strychnos potatorum, Cactus opuntia and Portunus sanguinolentus respectively. The better affinity between the pollutants and the bio coagulants were observed through the lower values of Langmuir isotherm constant kL. The adsorption intensity from Freundlich model (nF) were ranged between 1 and 10 for all the listed coagulants, which revealed the physisorption behavior and heterogeneous mechanism of removal. With these results, it would be possible to conduct scale-up studies to adopt the process for practical systems.
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Affiliation(s)
- S Vishali
- Department of Chemical Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603 203, India.
| | - P Mullai
- Department of Chemical Engineering, Annamalai University, Chidambaram, 608 002, India
| | - Shahid Mahboob
- Department of Zoology, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - K Al-Ghanim
- Department of Zoology, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Annamalai Sivasankar
- School of Architecture, Civil, Environmental, and Energy Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea
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Application of synthesized Fish Scale Chito-Protein (FSC) for the treatment of abattoir wastewater: Coagulation-flocculation kinetics and equilibrium modeling. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Mohd Faizal AN, Putra NR, Ahmad Zaini MA. Scylla Sp. Shell: a potential green adsorbent for wastewater treatment. TOXIN REV 2022. [DOI: 10.1080/15569543.2022.2039201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Azrul Nurfaiz Mohd Faizal
- Centre of Lipids Engineering and Applied Research (CLEAR), Ibnu – Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
| | - Nicky Rahmana Putra
- School of Chemical & Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
| | - Muhammad Abbas Ahmad Zaini
- Centre of Lipids Engineering and Applied Research (CLEAR), Ibnu – Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
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Desta WM, Bote ME. Wastewater treatment using a natural coagulant ( Moringa oleifera seeds): optimization through response surface methodology. Heliyon 2021; 7:e08451. [PMID: 34901502 PMCID: PMC8637492 DOI: 10.1016/j.heliyon.2021.e08451] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/04/2021] [Accepted: 11/18/2021] [Indexed: 11/26/2022] Open
Abstract
The high expense of chemical coagulant-treated water forces most people in rural regions to rely on easily available sources, which are usually of poor quality, and expose them to waterborne infections. According to this statement, the purpose of this study was to confirm the efficiency of extracting powder Moringa oleifera seeds, which are widely available in rural regions. The experiment was done based on a random design load of 0.1, 0.2, 0.3, 0.4, 0.5, and 0.6 g/500 ml of powder extracted from Moringa seeds. Chemical oxygen demand (COD), color, and turbidity were determined for both acidic and basic characteristics of wastewater. The optimum dosage of Moringa oleifera was 0.4 g/500 ml in both characteristics of wastewater in the case of color and turbidity. Moringa oleifera maximum reduction in turbidity, color, and COD in acidic wastewater was 98 %, 90.76 %, and 65.8 % respectively; while, the maximum reduction of turbidity, color, and COD in basic wastewater were 99.5 %, 97.7 %, and 65.82 % respectively. The study was demonstrated that, the application of RSM for seeking optimum conditions in the coagulation process for the treatment of wastewater. Moringa seed powder works best with a 7–9 pH range. The study also investigated that, best adsorption equilibrium was observed when using 0.1 g of Moringa oleifera seed powder. All the results showed that Moringa oleifera seeds were very effective for the removal of impurities.
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Affiliation(s)
- Wendesen Mekonin Desta
- Department of Water Supply and Environmental Engineering, Faculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, P.O. Box 378, Jimma, Ethiopia
| | - Million Ebba Bote
- Department of Water Supply and Environmental Engineering, Faculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, P.O. Box 378, Jimma, Ethiopia
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Lv H, Han P, Li X, Mu Z, Zuo Y, Wang X, Tan Y, He G, Jin H, Sun C, Wei H, Ma L. Electrocatalytic Degradation of Levofloxacin, a Typical Antibiotic in Hospital Wastewater. MATERIALS 2021; 14:ma14226814. [PMID: 34832216 PMCID: PMC8621070 DOI: 10.3390/ma14226814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/29/2021] [Accepted: 11/05/2021] [Indexed: 11/16/2022]
Abstract
Presently, in the context of the novel coronavirus pneumonia epidemic, several antibiotics are overused in hospitals, causing heavy pressure on the hospital’s wastewater treatment process. Therefore, developing stable, safe, and efficient hospital wastewater treatment equipment is crucial. Herein, a bench-scale electrooxidation equipment for hospital wastewater was used to evaluate the removal effect of the main antibiotic levofloxacin (LVX) in hospital wastewater using response surface methodology (RSM). During the degradation process, the influence of the following five factors on total organic carbon (TOC) removal was discussed and the best reaction condition was obtained: current density, initial pH, flow rate, chloride ion concentration, and reaction time of 39.6 A/m2, 6.5, 50 mL/min, 4‰, and 120 min, respectively. The TOC removal could reach 41% after a reaction time of 120 min, which was consistent with the result predicted by the response surface (40.48%). Moreover, the morphology and properties of the electrode were analyzed. The degradation pathway of LVX was analyzed using high-performance liquid chromatography–mass spectrometry (LC–MS). Subsequently, the bench-scale electrooxidation equipment was changed into onboard-scale electrooxidation equipment, and the onboard-scale equipment was promoted to several hospitals in Dalian.
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Affiliation(s)
- Hongxia Lv
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of New Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China; (H.L.); (X.L.); (Y.Z.); (X.W.); (G.H.); (H.J.)
| | - Peiwei Han
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, School of Energy Science and Engineering, University of Science and Technology of China, Guangzhou 510640, China;
| | - Xiaogang Li
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of New Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China; (H.L.); (X.L.); (Y.Z.); (X.W.); (G.H.); (H.J.)
| | - Zhao Mu
- Institute of Applied Chemical Technology for Oilfield, College of New Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China;
| | - Yuan Zuo
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of New Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China; (H.L.); (X.L.); (Y.Z.); (X.W.); (G.H.); (H.J.)
| | - Xu Wang
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of New Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China; (H.L.); (X.L.); (Y.Z.); (X.W.); (G.H.); (H.J.)
| | - Yannan Tan
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; (Y.T.); (C.S.)
| | - Guangxiang He
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of New Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China; (H.L.); (X.L.); (Y.Z.); (X.W.); (G.H.); (H.J.)
| | - Haibo Jin
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of New Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China; (H.L.); (X.L.); (Y.Z.); (X.W.); (G.H.); (H.J.)
| | - Chenglin Sun
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; (Y.T.); (C.S.)
| | - Huangzhao Wei
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; (Y.T.); (C.S.)
- Correspondence: (H.W.); (L.M.)
| | - Lei Ma
- Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology, College of New Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China; (H.L.); (X.L.); (Y.Z.); (X.W.); (G.H.); (H.J.)
- Correspondence: (H.W.); (L.M.)
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