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Ghadhban MY, Rashid KT, A AbdulRazak A, Alsalhy QF. Recent progress and future directions of membranes green polymers for oily wastewater treatment. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 87:57-82. [PMID: 36640024 DOI: 10.2166/wst.2022.409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The preparation, modification and application of green polymers such as poly-lactic acid (PLA), chitosan (CS), and cellulose acetate (CA) for oily wastewater treatment is summed up in this review. Due to the low environmental pollution, good chemical resistivity, high hydrophobicity, and good capacity for water-oil emulsion separation of the presented polymers, it then highlights the various membrane production methods and their role in producing effective membranes, with a focus on recent advances in improving membrane properties through the addition of various Nano materials. As a result, the hydrophilic/hydrophobic properties that are critical in the oil separation mechanism are highlighted. Finally, it looks at the predictions and challenges in oil/water separation and recovery. These ideas are discussed with a focus on modern production methods and oil separation proficiency.
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Affiliation(s)
- Maryam Y Ghadhban
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Iraq, Al-sinaa Street 52, Baghdad 10066, Iraq E-mail:
| | - Khalid T Rashid
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Iraq, Al-sinaa Street 52, Baghdad 10066, Iraq E-mail:
| | - Adnan A AbdulRazak
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Iraq, Al-sinaa Street 52, Baghdad 10066, Iraq E-mail:
| | - Qusay F Alsalhy
- Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Iraq, Al-sinaa Street 52, Baghdad 10066, Iraq E-mail:
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A Review of the Processes Associated with the Removal of Oil in Water Pollution. SUSTAINABILITY 2021. [DOI: 10.3390/su132212339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Water plays an essential role in production and refining processes. Many industries that use petrochemicals also require water, especially for cleaning purposes. The wastewaters released by these processes are often rich in petroleum pollutants, which requires significant treatment prior to disposal. The presence of petroleum contaminants in rivers and oceans is a significant threat to human health, as well as to many animal species. A current challenge for most industries and conventional effluent treatment plants is compliance with accepted disposal standards for oil-polluted wastewater. Of particular importance is the processing of dispersed oil in water, as well as oil in water emulsion. Conventional oil and water separation methods for processing oil in water contamination have several technology gaps in terms of applicability and efficiency. The removal and effective processing of dispersed oil and emulsions from oily wastewater is a costly and significant problem. The objective of this paper is to provide a review of the principles associated with oil in water emulsion separation, with the aim of providing a more definitive understanding of the terminology, processes, and methodologies, which will assist the development of a more efficient, innovative and environmentally friendly process for the separation of oily wastewater.
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Ma J, Xia W, Zhang R, Ding L, Kong Y, Zhang H, Fu K. Flocculation of emulsified oily wastewater by using functional grafting modified chitosan: The effect of cationic and hydrophobic structure. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123690. [PMID: 33264882 DOI: 10.1016/j.jhazmat.2020.123690] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 08/01/2020] [Accepted: 08/08/2020] [Indexed: 06/12/2023]
Abstract
In this work, modified chitosan flocculants (MCS) was synthesized by using chitosan (CS), acrylamide, cationic monomers and hydrophobic monomers via low-pressure UV-initiated copolymerization. The flocculation performance of MCS was evaluated in emulsified oily wastewater treatment. The effect of cationic and hydrophobic structure on oil removal was studied, and the interactions between these functional groups and the components in oil were also analyzed. Results suggested that MCS flocculants exhibited excellent oil removal efficiency in a wide pH range (2.0‒10). The flocculation efficiency of 91 % was achieved at the dosages of 0.6 mL/L (6 mg/L). During pH of 2.0-10, the optimal cationic and hydrophobic monomer was DMC and VT, respectively. Silane groups were favorable for oil removal than the other hydrophobic structures. The cationic groups expanded the optimal pH range of MCS in flocculation, whereas hydrophobic groups considerably reduced the dosage of MCS. The experimental results showed that alkane, cyclic aromatic hydrocarbon compounds in oil can be easily removed by using MC4, whereas cycloalkanes compounds was effectively removed by MC6 and MC7 because of preferable demulsification capacity, and the hydrophobic interaction, interfacial adsorption and electrostatic attraction played the dominant in flocculation. Thus, the synthesized MCS is favorable for emulsified oily wastewater treatment.
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Affiliation(s)
- Jiangya Ma
- School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan, Anhui, 243002, China; Engineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, Maanshan, Anhui, 243002, China.
| | - Wei Xia
- School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan, Anhui, 243002, China; Engineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, Maanshan, Anhui, 243002, China
| | - Rui Zhang
- School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan, Anhui, 243002, China; Engineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, Maanshan, Anhui, 243002, China
| | - Lei Ding
- School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan, Anhui, 243002, China; Engineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, Maanshan, Anhui, 243002, China
| | - Yanli Kong
- School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan, Anhui, 243002, China; Engineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, Maanshan, Anhui, 243002, China
| | - Huiwen Zhang
- School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan, Anhui, 243002, China; Engineering Research Center of Biomembrane Water Purification and Utilization Technology, Ministry of Education, Maanshan, Anhui, 243002, China
| | - Kun Fu
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
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Huang B, Zhao R, Xu H, Deng J, Li W, Wang J, Yang H, Zhang L. Adsorption of Methylene Blue on Bituminous Coal: Adsorption Mechanism and Molecular Simulation. ACS OMEGA 2019; 4:14032-14039. [PMID: 31497721 PMCID: PMC6714604 DOI: 10.1021/acsomega.9b01812] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 08/02/2019] [Indexed: 05/31/2023]
Abstract
Coal with its complex porous medium and abundant oxygen functional groups could be used as an adsorbent to adsorb organic compounds. Adsorption experiments and molecular dynamics simulations were carried out to study the behavior of methylene blue (MB) on the surface of Wiser bituminous coal. The influence of adsorption through factors, such as pulverized coal dosage, adsorption reaction time, initial concentration, and temperature effect, was investigated. The removal efficiency of MB reached 96.5% under optimum reactive conditions. The adsorption equilibrium was accorded with a Langmuir isotherm adsorption equation. The adsorption of MB onto coal was a spontaneous process because the adsorption free energy ΔG 0 was negative. It was consistent with the conclusion of a negative interaction energy between bituminous coal and MB obtained by molecular dynamics simulation. Moreover, the density distribution along z-axis of each component molecule showed that MB molecules were adsorbed on the coal surface because of the polar interactions between the methyl groups of MB and the hydrophilic sites at the coal surface. Also, the diffusion degree of water molecule in liquid phase showed that as MB molecules formed hydrogen bonds with the water molecules, the activity of water molecules was restricted.
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Tang J, Wang J, Jia H, Wen H, Li J, Liu W, Li J. The investigation on Fe 3O 4 magnetic flocculation for high efficiency treatment of oily micro-polluted water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 244:399-407. [PMID: 31132621 DOI: 10.1016/j.jenvman.2019.05.068] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/14/2019] [Accepted: 05/18/2019] [Indexed: 05/10/2023]
Abstract
For the low-concentration oily micro-polluted water formed by the leakage of refined oil products, an unexpensive and high-efficiency magnetic enhanced flocculation method was introduced in this study. First, the performance of magnetic flocculation(MF) to remove oily contaminants was discussed. The results indicated that it achieved more than 95% removal in only 1min with 50mg/L-Polyaluminum chloride(PAC), 50mg/L-Fe3O4 and10mg/L- Polyacrylamide (PAM). The novel indexs Rδand Si were proposed to evaluate the oil removal with UV-Abs in-situ method. According to the adsorption kinetics of oil contaminants, the adsorption kinetics changed from pseudo-first-order to pseudo-second-order kinetics after the addition of Fe3O4 on the basis of conventional coagulation (CF). It was transformed into intraparticle diffusion kinetics when the PAM continued to be added. Combined with the Fe-O-Al bond in the FTIR spectrum of flocs, the main mechanism of MF is enhanced charge neutralization and hydrogen bond adsorption. In addition, it was shown that satisfactory oil removal after recover, which indicated the great potential of a sustainable way by reusing low-cost magnetic seeds.
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Affiliation(s)
- Juan Tang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Jie Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China.
| | - Hui Jia
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Haitao Wen
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Juan Li
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Wenbin Liu
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Jingyu Li
- School of Environmental Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
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Xu Y, Tang B, Song X, Yu J. A high-efficiency hydrocyclone designed by response surface methodology for acid hydrolysis residue recycling. ROYAL SOCIETY OPEN SCIENCE 2019; 6:172339. [PMID: 30800335 PMCID: PMC6366176 DOI: 10.1098/rsos.172339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 11/28/2018] [Indexed: 06/09/2023]
Abstract
A high-efficiency hydrocyclone was designed by response surface methodology to evaluate the recycling of acid hydrolysis residues from titanium dioxide (TiO2) production as a study case. TiO2 is an important product and the world's best white pigment. During its production from ilmenite (FeTiO3) by the sulfuric acid method, the incomplete reaction produces large amounts of residue, which also contain unreacted ilmenite. Large amounts of residue are generally accumulated without any treatment. Hydrocyclone use is regarded as a method for separating and recovering chemicals from process residues by which the unreacted components can be recycled efficiently. However, hydrocyclones designed by conventional procedures may have some limitations regarding classification sharpness. In this paper, numerical experiments and laboratory tests were performed to evaluate the classification sharpness of various hydrocyclone designs. Response surface methodology was used to optimize hydrocyclones with different structural configurations. Based on the response models, a designed hydrocyclone with a high sharpness of classification of particles was constructed. The sharpness of the newly designed hydrocyclone increased from 80.5% to 93.3%. The vortex finder separated approximately 89.9% of the fine particles in impurities, while 51.0% of TiO2 was recycled by the spigot. The hydrocyclone proposed in this paper properly minimizes the risk of environmental pollution caused by TiO2 production and provides a significant estimated cost savings.
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Affiliation(s)
| | | | - Xingfu Song
- National Engineering Research Centre for Integrated Utilization of Salt Lake Resource, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
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Yan X, Meng S, Wang A, Wang L, Cao Y. Hydrodynamics and separation regimes in a cyclonic-static microbubble flotation column. ASIA-PAC J CHEM ENG 2018. [DOI: 10.1002/apj.2185] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaokang Yan
- School of Chemical Engineering and Technology; China University of Mining and Technology; Xuzhou Jiangsu 221116 China
| | - Shiqi Meng
- School of Chemical Engineering and Technology; China University of Mining and Technology; Xuzhou Jiangsu 221116 China
| | - Ai Wang
- School of Chemical Engineering and Technology; China University of Mining and Technology; Xuzhou Jiangsu 221116 China
| | - Lijun Wang
- School of Power Engineering; China University of Mining and Technology; Xuzhou Jiangsu 221116 China
| | - Yijun Cao
- Chinese National Engineering Research Center of Coal Preparation and Purification; Xuzhou Jiangsu 221116 China
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Characterization and coagulation behavior of polymeric aluminum ferric silicate for high-concentration oily wastewater treatment. Chem Eng Res Des 2017. [DOI: 10.1016/j.cherd.2017.01.009] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Li X, Zhu W, Liu J, Zhang J, Xu H, Deng X. Gas holdup in cyclone-static micro-bubble flotation column. ENVIRONMENTAL TECHNOLOGY 2015; 37:785-794. [PMID: 26293176 DOI: 10.1080/09593330.2015.1085098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The present work has been carried out to investigate the effect of process variables on gas holdup and develop an empirical equation and a neural network model for online process control of the gas holdup based on the operating variables. In this study, the effect of process variables (nozzle diameter, circulation pressure, aeration rate, and frother dosage) on gas holdup in a cyclone-static micro-bubble flotation column of an air/oily wastewater system was investigated. Gas holdup was estimated using a pressure difference method and an empirical equation was proposed to predict gas holdup. A general regression neural network (GRNN) model was also introduced to predict gas holdup for the cyclone-static micro-bubble flotation column. The predictions from the empirical equation and the GRNN are in good agreement with the experiment data for gas holdup, while the GRNN provides higher accuracy and stability compared with that of the empirical equation.
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Affiliation(s)
- Xiaobing Li
- a National Center for Coal Preparation and Purification Engineering Research , China University of Mining and Technology , Jiangsu 221116 Xuzhou , People's Republic of China
| | - Wei Zhu
- b Sinopec Petroleum Engineering Corportation , Shandong 257026 , Dongying , People's Republic of China
| | - Jiongtian Liu
- a National Center for Coal Preparation and Purification Engineering Research , China University of Mining and Technology , Jiangsu 221116 Xuzhou , People's Republic of China
| | - Jian Zhang
- b Sinopec Petroleum Engineering Corportation , Shandong 257026 , Dongying , People's Republic of China
| | - Hongxiang Xu
- c China University of Mining and Technology (Beijing) , Beijing 100083 , People's Republic of China
| | - Xiaowei Deng
- a National Center for Coal Preparation and Purification Engineering Research , China University of Mining and Technology , Jiangsu 221116 Xuzhou , People's Republic of China
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Xu H, Liu J, Li X, Zhang C, Wang Y. The effect of bubble size on oil-water separation efficiency for a novel oil-water separation column. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2015.1063653] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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