1
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Che Lah NF, Ahmad AL, Nazri AI, Zaulkiflee ND. Fouling mitigation of microcrystalline cellulose-blended poly(vinylidene fluoride) membranes in protein separation. ENVIRONMENTAL TECHNOLOGY 2024:1-8. [PMID: 39038428 DOI: 10.1080/09593330.2024.2380394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 07/02/2024] [Indexed: 07/24/2024]
Abstract
Modifications of polymeric membranes are necessary to improve the membrane characteristics. The composite membrane of Poly(vinylidene fluoride)_Microcrystalline cellulose (PVDF_MCC) was prepared using dimethylacetamide/lithium chloride (DMAc/LiCl) as co-solvent to dissolve the MCC in the casting solution. The prepared membrane was characterized by using the FTIR, SEM, contact angle, and the water permeates flux. The improvement of hydrophilicity and pore structure with the incorporation of MCC was observed which led to the increment of the water and permeate flux. Indication from the rheological study suggested that the casting solutions with MCC presented the influence on the composite membrane's pore structure as a significant viscosity increment was observed. This can be examined from the larger pore and elongated finger-like structure of the membrane morphology compared to the pristine membrane. The rejection rate of the protein increased from 85% to 97% after the incorporation of MCC in the PVDF membrane. The utilization of a low-cost and environmentally friendly additive that MCC has to offer helps to improve the antifouling properties of PVDF membranes for the efficient removal of BSA in water.
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Affiliation(s)
- Nuur Fahanis Che Lah
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Malaysia
| | - Abdul Latif Ahmad
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Malaysia
| | - Amirul Islah Nazri
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Malaysia
| | - Nur Dina Zaulkiflee
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Malaysia
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2
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Muhammad T, Jiang C, Liu Z, Manan I, Xiao Y, Li Y. Using organic fertilizer to mitigate organic-inorganic fouling in agricultural saline wastewater irrigation systems. CHEMOSPHERE 2024; 352:141373. [PMID: 38340996 DOI: 10.1016/j.chemosphere.2024.141373] [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: 09/30/2023] [Revised: 01/28/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024]
Abstract
Recycling saline wastewater for agricultural irrigation offer a promising solution to address both water scarcity and anthropogenic pollution. However, organic-inorganic fouling in saline wastewater irrigation systems (SWIS) poses significant technical and economic challenges. Traditional chemical biocides are currently insufficient for controlling composite organic-inorganic fouling and may pose environmental hazards. This study proposed a greener approach using organic acid (OA) fertilizers to alleviate organic-inorganic fouling in agricultural SWIS. The treatment performances were assessed employing four types of OA fertilizers (i.e., humic acid, alginic acid, nucleotide, and ammonia acid) and a negative control. Results showed that three types of OA, i.e., alginic acid, nucleotide, and ammonia acid, effectively reduced the total SWIS fouling content by 11.2%-57.4%, whereas humic acid exacerbated fouling by 11.2%-57.4%. Specifically, all types of OA significantly mitigated the content of inorganic fouling (precipitates and silicates) by 10.7%-42.3% by forming loosed and sparser structures. However, OA exhibited minimum effects on controlling silica fouling. Meanwhile, except the humic acid, other types of OA decreased the total content of organic fouling by 17.2%-39.5% by reducing the content of humic substances and building block fractions. In addition, the significant binary interactions of organic-inorganic fouling indicated the active role of calcium silica and biomineralization fouling. These findings provide insight into the development of appropriate and eco-friendly antifouling strategies for SWIS, with implications for recycling and reusing saline wastewater.
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Affiliation(s)
- Tahir Muhammad
- College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, China; College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Cuiling Jiang
- College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Zeyuan Liu
- College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, China
| | - Irum Manan
- Department of Botany, Sardar Bahadur Khan Women's University, Quetta, 87300, Pakistan
| | - Yang Xiao
- College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, China; Engineering Research Center for Agricultural Water-Saving and Water Resources, Ministry of Education, Beijing, 100083, China.
| | - Yunkai Li
- College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, China; Engineering Research Center for Agricultural Water-Saving and Water Resources, Ministry of Education, Beijing, 100083, China
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3
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Shen Y, Zhang Y, Jiang Y, Cheng H, Wang B, Wang H. Membrane processes enhanced by various forms of physical energy: A systematic review on mechanisms, implementation, application and energy efficiency. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167268. [PMID: 37748609 DOI: 10.1016/j.scitotenv.2023.167268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/05/2023] [Accepted: 09/20/2023] [Indexed: 09/27/2023]
Abstract
Membrane technologies in water and wastewater treatment have been eagerly pursued over the past decades, yet membrane fouling remains the major bottleneck to overcome. Membrane fouling control methods which couple membrane processes with online in situ application of external physical energy input (EPEI) are getting closer and closer to reality, thanks to recent advances in novel materials and energy deliverance methods. In this review, we summarized recent studies on membrane fouling control techniques that depend on (i) electric field, (ii) acoustic field, (iii) magnetic field, and (iv) photo-irradiation (mostly ultraviolet or visible light). Mechanisms of each energy input were first reported, which defines the applicability of these methods to certain wastewater matrices. Then, means of implementation were discussed to evaluate the compatibility of these fouling control methods with established membrane techniques. After that, preferred applications of each energy input to different foulant types and membrane processes in the experiment reports were summarized, along with a discussion on the trends and knowledge gaps of such fouling control research. Next, specific energy consumption in membrane fouling control and flux enhancement was estimated and compared, based on the experimental results reported in the literature. Lastly, strength and weakness of these methods and future perspectives were presented as open questions.
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Affiliation(s)
- Yuxiang Shen
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yichong Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yulian Jiang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Haibo Cheng
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Banglong Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Hongyu Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
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4
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Wang X, Li P, Ye Y, Xu C, Liu Y, Li E, Xia Q, Hou L, Yu S. Modification of the distribution of humic acid complexations by introducing microbubbles to membrane distillation process for effective membrane fouling alleviation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 348:119171. [PMID: 37832287 DOI: 10.1016/j.jenvman.2023.119171] [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: 07/01/2023] [Revised: 09/19/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023]
Abstract
Membrane fouling caused by inorganic ions and natural organic matters (NOMs) has been a severe issue in membrane distillation. Microbubble aeration (MB) is a promising technology to control membrane fouling. In this study, MB aeration was introduced to alleviate humic acid (HA) composited fouling during the treatment of simulative reverse osmosis concentrate (ROC) by vacuum membrane distillation (VMD). The objective of this work was to explore the HA fouling inhibiting effect by MB aeration and discuss its mechanism from the interfacial point of view. The results showed that VMD was effective for treating ROC, followed by a severe membrane fouling aggravated with the addition of 100 mg/L HA in feed solution, resulting in 45.7% decline of membrane flux. Analysis using the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory and zeta potential distribution of charged particles proved the coexistence of HA and inorganic cations (especially Ca2+), resulting in more serious membrane fouling. The introduction of MB aeration exhibited excellent alleviating effect on HA-inorganic salt fouling, with the normalized flux increased from 19.7% to 37.0%. The interfacial properties of MBs played an important role, which altered the zeta potential distributions of charged particles in HA solution, indicating that MBs adhere the HA complexations. Furthermore, this mitigating effect was limited at high inorganic cations concentration. Overall, MBs could change the potential characteristics of HA complexes, which also be used for other similar membrane fouling alleviation.
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Affiliation(s)
- Xitong Wang
- School of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, China
| | - Pan Li
- School of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
| | - Yubing Ye
- School of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, China; Shanghai Municipal Engineering Design Institute (Group) Co., Ltd, China
| | - Chen'ao Xu
- School of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, China
| | - Yanling Liu
- School of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Enchao Li
- Baowu Water Technology Co., Ltd Researsh Institute, China
| | - Qing Xia
- Shanghai Engineering Research Center of Energy - Saving in Heat Exchange Systems, Shanghai University of Electric Power, Shanghai, 200090, China
| | - Li'an Hou
- School of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, China; Xi'an High-Tech Institute, Xi'an, 710025, China
| | - Shuili Yu
- School of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, 1239 Siping Road, Shanghai, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
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5
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Tan YZ, Alias NH, Aziz MHA, Jaafar J, Othman FEC, Chew JW. Progress on Improved Fouling Resistance-Nanofibrous Membrane for Membrane Distillation: A Mini-Review. MEMBRANES 2023; 13:727. [PMID: 37623788 PMCID: PMC10456459 DOI: 10.3390/membranes13080727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/03/2023] [Accepted: 08/04/2023] [Indexed: 08/26/2023]
Abstract
Nanofibrous membranes for membrane distillation (MD) have demonstrated promising results in treating various water and wastewater streams. Significant progress has been made in recent decades because of the development of sophisticated membrane materials, such as superhydrophobic, omniphobic and Janus membranes. However, fouling and wetting remain crucial issues for long-term operation. This mini-review summarizes ideas as well as their limitations in understanding the fouling in membrane distillation, comprising organic, inorganic and biofouling. This review also provides progress in developing antifouling nanofibrous membranes for membrane distillation and ongoing modifications on nanofiber membranes for improved membrane distillation performance. Lastly, challenges and future ways to develop antifouling nanofiber membranes for MD application have been systematically elaborated. The present mini-review will interest scientists and engineers searching for the progress in MD development and its solutions to the MD fouling issues.
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Affiliation(s)
- Yong Zen Tan
- School of Chemistry, Chemical and Biotechnology Engineering, Nanyang Technological University, Singapore 637459, Singapore;
| | - Nur Hashimah Alias
- School of Chemistry, Chemical and Biotechnology Engineering, Nanyang Technological University, Singapore 637459, Singapore;
- Department of Oil and Gas Engineering, School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia
| | - Mohd Haiqal Abd Aziz
- Department of Chemical Engineering Technology, Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Higher Education Hub Muar, Batu Pahat 84600, Johor, Malaysia
| | - Juhana Jaafar
- Advanced Membrane Technology Research Center (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia;
| | - Faten Ermala Che Othman
- Digital Manufacturing & Design Center (DManD), Singapore University of Technology & Design, 8 Somapah Road, Singapore 487372, Singapore;
| | - Jia Wei Chew
- School of Chemistry, Chemical and Biotechnology Engineering, Nanyang Technological University, Singapore 637459, Singapore;
- Singapore Membrane Technology Center, Nanyang Technological University, Singapore 637141, Singapore
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6
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Jin Q, Zhang X, Li F, Zhao X. Hydrophobic modification of a PVDF hollow fiber membrane by plasma activation and silane grafting for membrane distillation. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 87:2806-2819. [PMID: 37318925 PMCID: wst_2023_166 DOI: 10.2166/wst.2023.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Polyvinylidene fluoride (PVDF) hollow fibers were hydrophobically modified using a simple and scalable method of plasma activation and silane grafting. The effects of plasma gas, applied voltage, activation time, silane type, and concentration were investigated according to the membrane hydrophobicity and direct contact membrane distillation (DCMD) performance. Two kinds of silane were used, including methyl trichloroalkyl silane (MTCS) and 1H,1H,2H,2H-perfluorooctane trichlorosilane silanes (PTCS). The membranes were characterized by techniques such as Fourier transform infrared (FTIR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and contact angle. The contact angle of the pristine membrane was 88°, which increased to 112°-116° after modification. Meanwhile, the pore size and porosity decreased. In DCMD, the maximum rejection reached 99.95% by the MTCS-grafted membrane, while the flux decreased by 35% and 65% for the MTCS- and PTCS-grafted membranes, respectively. Treating humic acid-contained solution, the modified membrane showed steadier water flux and higher salt rejection than the pristine membrane, and 100% flux recovery was achieved by simple water flushing. This two-step method of plasma activation and silane grafting is very simple and effective to improve the hydrophobicity and DCMD performance of PVDF hollow fibers. However, further study on improving the water flux should be carried out.
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Affiliation(s)
- Qiaoru Jin
- Lab of Environmental Science & Technology, INET, Tsinghua University, Beijing 100084, China E-mail: ; School of Environmental Science & Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; Q.J. and X.Z. are co-first authors
| | - Xue Zhang
- Lab of Environmental Science & Technology, INET, Tsinghua University, Beijing 100084, China E-mail: ; Q.J. and X.Z. are co-first authors
| | - Fuzhi Li
- Lab of Environmental Science & Technology, INET, Tsinghua University, Beijing 100084, China E-mail:
| | - Xuan Zhao
- Lab of Environmental Science & Technology, INET, Tsinghua University, Beijing 100084, China E-mail:
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7
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Bhoumick MC, Roy S, Mitra S. Reduction and Elimination of Humic Acid Fouling in Air Sparged Membrane Distillation Using Nanocarbon Immobilized Membrane. Molecules 2022; 27:molecules27092896. [PMID: 35566247 PMCID: PMC9103841 DOI: 10.3390/molecules27092896] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 11/16/2022] Open
Abstract
In this paper, we present the treatment of humic acid solution via carbon nanotube immobilized membrane (CNIM) distillation assisted by air sparging (AS). Carbon nanotubes offer excellent hydrophobicity to the modified membrane surface and actively transport water vapor molecules through the membrane to generate higher vapor flux and better rejection of humic acid. The introduction of air sparging in the membrane distillation (MD) system has changed the humic substance fouling by changing the colloidal behavior of the deposits. This modified MD system can sustain a higher run time of separation and has enhanced the evaporation efficiency by 20% more than the regular membrane distillation. The air sparging has reduced the deposition by 30% in weight and offered lesser fouling of membrane surface even after a longer operating cycle. The water vapor flux increased with temperature and decreased as the volumetric concentrating factor (VCF) increased. The mass transfer coefficient was found to be the highest for the air sparged—carbon nanotube immobilized membrane (AS-CNIM) integrated membrane distillation. While the highest change in mass transfer coefficient (MTC) was found for polytetrafluoroethylene (PTFE) membrane with air sparging at 70 °C.
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8
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Ahmad AL, Che Lah NF, Norzli NA, Pang WY. A Contrastive Study of Self-Assembly and Physical Blending Mechanism of TiO2 Blended Polyethersulfone Membranes for Enhanced Humic Acid Removal and Alleviation of Membrane Fouling. MEMBRANES 2022; 12:membranes12020162. [PMID: 35207083 PMCID: PMC8877718 DOI: 10.3390/membranes12020162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/04/2022] [Accepted: 01/05/2022] [Indexed: 12/04/2022]
Abstract
In this study, membrane fabrication was achieved by two different methods: (i) self-assembly and (ii) physical blending of TiO2 in PES membrane for humic acid filtration. The TiO2 nanoparticles were self-assembled by using TBT as the precursor and pluronic F127 as triblock copolymers around the membrane pores. This was achieved by manipulating the hydrolysis and condensation reaction of TBT precursors during the non-solvent induced phase separation (NIPS) process. On the other hand, the TiO2 was physically blended as a comparison to the previous method. The characteristic of the membrane was analysed to explore the possibility of enhancing the membrane antifouling mechanism and the membrane flux. The membrane morphology, pore size, porosity, and contact angle were characterised. Both methods proved to be able to enhance the antifouling properties and flux performance. The HA rejection increased up to 95% with membrane flux 55.40 kg m−2 h−1. The rejection rate was not significantly improved for either method. However, the antifouling characteristic for the self-assembly TiO2/PES membrane was better than the physically blended membrane. This was found to be due to the high surface hydrophilicity of the MM membrane, which repelled the hydrophobic HA and consequently blocked the HA adsorption onto the surface.
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Investigation of fouling mechanism in membrane distillation using in-situ optical coherence tomography with green regeneration of fouled membrane. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.119894] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Review of New Approaches for Fouling Mitigation in Membrane Separation Processes in Water Treatment Applications. SEPARATIONS 2021. [DOI: 10.3390/separations9010001] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
This review investigates antifouling agents used in the process of membrane separation (MS), in reverse osmosis (RO), ultrafiltration (UF), nanofiltration (NF), microfiltration (MF), membrane distillation (MD), and membrane bioreactors (MBR), and clarifies the fouling mechanism. Membrane fouling is an incomplete substance formed on the membrane surface, which will quickly reduce the permeation flux and damage the membrane. Foulant is colloidal matter: organic matter (humic acid, protein, carbohydrate, nano/microplastics), inorganic matter (clay such as potassium montmorillonite, silica salt, metal oxide, etc.), and biological matter (viruses, bacteria and microorganisms adhering to the surface of the membrane in the case of nutrients) The stability and performance of the tested nanometric membranes, as well as the mitigation of pollution assisted by electricity and the cleaning and repair of membranes, are reported. Physical, chemical, physico-chemical, and biological methods for cleaning membranes. Biologically induced biofilm dispersion effectively controls fouling. Dynamic changes in membrane foulants during long-term operation are critical to the development and implementation of fouling control methods. Membrane fouling control strategies show that improving membrane performance is not only the end goal, but new ideas and new technologies for membrane cleaning and repair need to be explored and developed in order to develop future applications.
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Ni T, Lin J, Kong L, Zhao S. Omniphobic membranes for distillation: Opportunities and challenges. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.02.035] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Yue Y, An G, Liu L, Lin L, Jiao R, Wang D. Pre-aggregation of Al 13 in optimizing coagulation for removal of humic acid. CHEMOSPHERE 2021; 277:130268. [PMID: 33774233 DOI: 10.1016/j.chemosphere.2021.130268] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 03/01/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
The effective removal of humic acid (HA) by coagulation has been extensively investigated for water treatments. However, the limitations of pH variation and excessive residual aluminum issues were still factors needed to be considered. In this study, to investigate the coagulation mechanism for removing HA by Al13 and optimize Al13 operation for removing HA, Al13 and preformed Al13 aggregates (Al13agg) were applied to remove HA at different pH conditions. The results showed that preformed Al13agg exhibited superior HA removal performance than Al13 due to its wide pH range and low residual Al level. During coagulation, Al13 and Al13agg interacted with HA in their original status, but the DSlope325-375 difference implied that the complexation capacity between HA and Al13agg was stronger than Al13. The new peaks of HPSEC representing larger molecular weight substances were formed under acidic and neutral conditions, which indicated that HA firstly aggregated into larger complexed molecules by interacting with Al13 or its hydrolysates and was subsequently removed by forming large flocs which was completely different from Al13agg situation. Therefore, the different coagulation mechanisms played the roles in HA removal for Al13 and Al13agg which were studied in this paper. It was believed that the complexation and charge neutralization effects dominated coagulation process for Al13 while sweep flocculation and adsorption coagulation were main driving force for Al13agg in HA removing. This work provides significant understanding of HA removal by Al13 and Al13agg coagulation, which can help to design and optimize the high efficiency coagulant based on Al polycations.
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Affiliation(s)
- Ye Yue
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Guangyu An
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| | - Libing Liu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Leiming Lin
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ruyuan Jiao
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Yangtze River Delta Branch, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Yiwu, Zhejiang, 322000, China
| | - Dongsheng Wang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Yangtze River Delta Branch, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Yiwu, Zhejiang, 322000, China.
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13
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A comprehensive review of membrane fouling and cleaning methods with emphasis on ultrasound-assisted fouling control processes. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-021-0832-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Nawaz MS, Son HS, Jin Y, Kim Y, Soukane S, Al-Hajji MA, Abu-Ghdaib M, Ghaffour N. Investigation of flux stability and fouling mechanism during simultaneous treatment of different produced water streams using forward osmosis and membrane distillation. WATER RESEARCH 2021; 198:117157. [PMID: 33933919 DOI: 10.1016/j.watres.2021.117157] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/11/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
Forward osmosis-membrane distillation (FO-MD) hybrids were recently found suitable for produced water treatment. Exclusion of synthetic chemical draw solutions, typically used for FO, can reduce FO-MD operational costs and ease its onsite application. This study experimentally validates a novel concept for the simultaneous treatment of different produced water streams available at the same industrial site using an FO-MD hybrid system. The water oil separator outlet (WO) stream was selected as FO draw solution and it generated average fluxes ranging between 8.30 LMH and 26.78 LMH with four different feed streams. FO fluxes were found to be governed by the complex composition of the feed streams. On the other hand, with WO stream as MD feed, an average flux of 14.41 LMH was achieved. Calcium ions were found as a main reason for MD flux decline in the form of CaSO4 scaling and stimulating the interaction between the membrane and humic acid molecules to form scale layer causing reduction in heat transfer and decline in MD flux (6%). Emulsified oil solution was responsible for partial pore clogging resulting in further 2% flux decline. Ethylenediaminetetraaceticacid (EDTA) was able to mask a portion of calcium ions and resulted in a complete recovery of the original MD flux. Under hybrid FO-MD experiments MD fluxes between 5.62 LMH and 11.12 LMH were achieved. Therefore, the novel concept is validated to produce fairly stable FO and MD fluxes, with few streams, without severe fouling and producing excellent product water quality.
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Affiliation(s)
- Muhammad Saqib Nawaz
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Hyuk Soo Son
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Yong Jin
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Youngjin Kim
- Department of Environmental Engineering, Sejong Campus, Korea University, 2511, Sejong-ro, Jochiwon-eup, Sejong-si, Republic of Korea
| | - Sofiane Soukane
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Mohammed Ali Al-Hajji
- Energy Systems Division, Process & Control Systems Department (P&CSD), Saudi Aramco, Dhahran, Saudi Arabia
| | - Muhannad Abu-Ghdaib
- Energy Systems Division, Process & Control Systems Department (P&CSD), Saudi Aramco, Dhahran, Saudi Arabia
| | - Noreddine Ghaffour
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia.
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Aghapour Aktij S, Taghipour A, Rahimpour A, Mollahosseini A, Tiraferri A. A critical review on ultrasonic-assisted fouling control and cleaning of fouled membranes. ULTRASONICS 2020; 108:106228. [PMID: 32717532 DOI: 10.1016/j.ultras.2020.106228] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 01/18/2020] [Accepted: 07/13/2020] [Indexed: 06/11/2023]
Abstract
Fouling is one of the most challenging problems impacting the performance of membrane-based separation technology. In recent years, ultrasound have been widely applied as an unconventional method to control membrane fouling, as well as to enhance membrane cleaning. The aim of the present work is to review the current literature and the recent developments related to the use of ultrasound as an innovative and alternative approach to improve the fouling behavior of membrane separation processes. The theory underlying ultrasonic-assisted phenomena is reviewed, together with operational factors that influence the effectiveness of the ultrasound treatment, such as frequency, power intensity, pressure, temperature, pH, and operation mode. Ultrasound irradiation effectively aids the cleaning of contaminated surfaces and enhances the permeate flux, owing to cavitation phenomena and powerful convective currents, associated with secondary phenomena, such as microstreamers, shock waves, and heating. However, the lifetime of the membranes should be carefully evaluated when applying ultrasonication as a technique of cleaning or controlling membrane fouling. Indeed, the integrity of membranes after sonication and the control of erosion produced by high ultrasonic intensities are key issues hindering the scale-up of this approach in the membrane industry. This reviews highlights the topics requiring more investigations, specifically to evaluate the economic aspects of ultrasonic assisted fouling control and cleaning in membrane processes.
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Affiliation(s)
- Sadegh Aghapour Aktij
- Department of Chemical & Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada; Department of Mechanical Engineering, 10-367 Donadeo Innovation Center for Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Amirhossein Taghipour
- Department of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran
| | - Ahmad Rahimpour
- Department of Chemical Engineering, Babol Noshirvani University of Technology, Babol, Iran; Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy; Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy.
| | - Arash Mollahosseini
- Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, Canada
| | - Alberto Tiraferri
- Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy.
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16
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Siyal MI, Lee CK, Park C, Khan AA, Kim JO. A review of membrane development in membrane distillation for emulsified industrial or shale gas wastewater treatments with feed containing hybrid impurities. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 243:45-66. [PMID: 31078929 DOI: 10.1016/j.jenvman.2019.04.105] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 04/03/2019] [Accepted: 04/25/2019] [Indexed: 06/09/2023]
Abstract
Investigations on membrane materials for membrane distillation (MD) and its applications have been ongoing since the 1990s. However, a lack of materials that produce robustly stable and up-to-the-mark membranes for MD for different industrial applications remains an ongoing problem. This paper provides an overview of materials developed for MD applications. Although key aspects of published articles reviewed in this paper pertain to MD membranes synthesized for desalination, future MD can also be applied to organic wastewater containing surfactants with inorganic compounds, either with the help of hybrid treatment processes or with customized membrane materials. Many industrial discharges produce effluents at a very high temperature, which is an available driving force for MD. However, there remains a lack of cost-effective membrane materials. Amphiphobic and omniphobic membranes have recently been developed for treating emulsified and shale gas produced water, but the problem of organic fouling and pore wetting remains a major challenge, especially when NaCl and other inorganic impurities are present, which further deteriorate separation performance. Therefore, further advancements in materials are required for the treatment of emulsified industrial wastewater containing surfactants, salts, and for oil or shale gas wastewater for its commercialized reuse. Integrated MD systems, however, may represent a major change in shale gas wastewater and emulsified wastewater that are difficult to treat.
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Affiliation(s)
- Muhammad Irfan Siyal
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, South Korea; Department of Materials and Testing, National Textile University, Faisalabad, Pakistan
| | - Chang-Kyu Lee
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, South Korea
| | - Chansoo Park
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, South Korea
| | - Aftab Ahmed Khan
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, South Korea
| | - Jong-Oh Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, South Korea.
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17
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Khan AA, Siyal MI, Lee CK, Park C, Kim JO. Hybrid organic-inorganic functionalized polyethersulfone membrane for hyper-saline feed with humic acid in direct contact membrane distillation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.07.087] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Ye Y, Yu S, Hou L, Liu B, Xia Q, Liu G, Li P. Microbubble aeration enhances performance of vacuum membrane distillation desalination by alleviating membrane scaling. WATER RESEARCH 2019; 149:588-595. [PMID: 30522051 DOI: 10.1016/j.watres.2018.11.048] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/01/2018] [Accepted: 11/18/2018] [Indexed: 06/09/2023]
Abstract
Membrane fouling, especially inorganic fouling due to salt crystal formation and deposition on the membrane surface, is still a major technical issue in membrane distillation (MD) applications. In this study, microbubble aeration (MBA) was included in a laboratory-scale vacuum membrane distillation (VMD) rig and its effect on a desalination process was examined. Without MBA, serious membrane scaling occurred during desalination of simulated high-salinity sea water (100 g.L-1 salt concentration), which resulted in a dramatic reduction of permeate flux to essentially zero after 120 min. Scanning electron microscopy showed that a layer of large cuboid salt crystals uniformly covered the membrane surface. However, membrane scaling was mitigated with the introduction of MBA, resulting in the improved VMD desalination performance, which was positively correlated with pump pressure in the microbubble (MB) generator. Results showed that the effective processing time of the VMD desalination processing cycle was respectively prolonged to 150, 180, and more than 300 and 360 min (cf. 120 min without MBA) when the pump pressure was respectively at 0.1, 0.2, 0.3 and 0.4 MPa, leading to the increase of cumulative water production. Further studies found that larger numbers of MBs of smaller size were produced at higher pump pressure, which are more beneficial for increasing water vapor production and alleviating salt precipitation. The difference in zeta potential between the MBs in distilled water (about -30 mV) and that in SW100 solution (about -2 mV) demonstrated that MBA not only effectively mitigated the negative effect of concentration polarization by enhancing the surface shear rate at the membrane surface, but also reduced salt precipitation probably due to the MBs attracting counterions to the gas-water interface. Finally, energy consumption analysis of the modified VMD desalination process revealed that MBA, while itself only adding about 3% to the total energy consumption at varied pump pressures, was able to improve the specific energy consumption, especially at higher pump pressures. Together, these results demonstrate that MBA is an effective way of improving the performance of VMD desalination of water.
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Affiliation(s)
- Yubing Ye
- School of Environmental Science and Engineering, State Key Laboratory of Control and Resource Reuse, Tongji University, 1239, Siping Road, Shanghai, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
| | - Shuili Yu
- School of Environmental Science and Engineering, State Key Laboratory of Control and Resource Reuse, Tongji University, 1239, Siping Road, Shanghai, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
| | - Li'an Hou
- School of Environmental Science and Engineering, State Key Laboratory of Control and Resource Reuse, Tongji University, 1239, Siping Road, Shanghai, China; Xi'an High-Tech Institute, Xi'an, 710025, China.
| | - Baosen Liu
- School of Environmental Science and Engineering, State Key Laboratory of Control and Resource Reuse, Tongji University, 1239, Siping Road, Shanghai, China.
| | - Qing Xia
- School of Environmental Science and Engineering, State Key Laboratory of Control and Resource Reuse, Tongji University, 1239, Siping Road, Shanghai, China.
| | - Guicai Liu
- School of Civil Engineering and Architecture, University of Jinan, Jinan, 250022, China.
| | - Pan Li
- School of Environmental Science and Engineering, State Key Laboratory of Control and Resource Reuse, Tongji University, 1239, Siping Road, Shanghai, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
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19
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Tang Y, Sun J, Li S, Ran Z, Xiang Y. Effect of ethanol in the coagulation bath on the structure and performance of PVDF-g-PEGMA/PVDF membrane. J Appl Polym Sci 2018. [DOI: 10.1002/app.47380] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yulan Tang
- Municipal and Environmental Engineering College; Shenyang Jianzhu University; Shenyang 110168 People's Republic of China
| | - Jian Sun
- Municipal and Environmental Engineering College; Shenyang Jianzhu University; Shenyang 110168 People's Republic of China
- Shenzhen Key Lab of Industrial Water Saving & Municipal Sewage Reclamation Technology; Shenzhen Polytechnic Institute; Shenzhen 518055 People's Republic of China
| | - Shaofeng Li
- Shenzhen Key Lab of Industrial Water Saving & Municipal Sewage Reclamation Technology; Shenzhen Polytechnic Institute; Shenzhen 518055 People's Republic of China
| | - Zhilin Ran
- School of Transportation and Environment; Shenzhen Institute of Information Technology; Shenzhen 518172 People's Republic of China
| | - Yingxue Xiang
- Municipal and Environmental Engineering College; Shenyang Jianzhu University; Shenyang 110168 People's Republic of China
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20
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Wang G, Li S, Ma X, Qiao J, Li G, Zhang H, Wang J, Song Y. A novel Z-scheme sonocatalyst system, Er 3+:Y 3Al 5O 12@Ni(Fe 0.05Ga 0.95) 2O 4-Au-BiVO 4, and application in sonocatalytic degradation of sulfanilamide. ULTRASONICS SONOCHEMISTRY 2018; 45:150-166. [PMID: 29705307 DOI: 10.1016/j.ultsonch.2018.03.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 03/16/2018] [Accepted: 03/20/2018] [Indexed: 06/08/2023]
Abstract
A novel Z-scheme coated composite, Er3+:Y3Al5O12@Ni(Fe0.05Ga0.95)2O4-Au-BiVO4, was designed for sonocatalytic degradation of sulfanilamide and fabricated by sol-hydrothermal and calcination methods. The prepared sample was characterized by X-ray diffractometer (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectroscopy (EDX), UV-vis diffuse reflectance spectra (DRS), fourier transform infrared (FT-IR) spectra, Raman spectra and photoluminescence (PL) spectra. In Er3+:Y3Al5O12@Ni(Fe0.05Ga0.95)2O4-Au-BiVO4, Ni(Fe0.05Ga0.95)2O4 and BiVO4 form a Z-scheme sonocatalytic system, Er3+:Y3Al5O12 as an up-conversion luminescence agent (from visible-light to ultraviolet-light) provides the ultraviolet-light for satisfying the energy demand of wide band-gap Ni(Fe0.05Ga0.95)2O4 and Au nanoparticles as co-catalyst forms more active sites to enrich electrons. Also, Au nanoparticles as conductive channels promotes the electrons (e-) from conduction band of BiVO4 to transfer to valence band of Ni(Fe0.05Ga0.95)2O4. Due to the characteristics of valence state diversity, the Fe3+ and V5+ constitute a redox reaction recombination system, which can also push electrons (e-) on conduction band of BiVO4 to quickly transfer to valence band of Ni(Fe0.05Ga0.95)2O4. The sonocatalytic activity of Er3+:Y3Al5O12@Ni(Fe0.05Ga0.95)2O4-Au-BiVO4 nanocomposite was detected through degradation of sulfanilamide under ultrasonic irradiation. A high sonocatalytic degradation ratio (95.64%) of sulfanilamide can be obtained when the conditions of 10.00 mg/L sulfanilamide, 1.00 g/L Er3+:Y3Al5O12@Ni(Fe0.05Ga0.95)2O4-Au-BiVO4, 300 min ultrasonic irradiation and 100 mL total volume were adopted. Some factors such as ultrasonic irradiation time and cycle number on the sonocatalytic degradation efficiency are also investigated by using TOC and UV-vis spectroscopy. Subsequently, the effects of hydroxyl radicals (OH) and hole scavengers were investigated to elaborate the mechanism. The researches show that the prepared Z-scheme Er3+:Y3Al5O12@Ni(Fe0.05Ga0.95)2O4-Au-BiVO4 coated composite displayed an excellent sonocatalytic activity in degradation of sulfanilamide under ultrasonic irradiation.
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Affiliation(s)
- Guowei Wang
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Siyi Li
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Xue Ma
- College of Environment, Liaoning University, Shenyang 110036, PR China
| | - Jing Qiao
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Guanshu Li
- College of Environment, Liaoning University, Shenyang 110036, PR China
| | - Hongbo Zhang
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Jun Wang
- College of Chemistry, Liaoning University, Shenyang 110036, PR China.
| | - Youtao Song
- College of Environment, Liaoning University, Shenyang 110036, PR China.
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21
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Huang Q, Liu H, Wang Y, Xiao C. A hybrid electric field assisted vacuum membrane distillation method to mitigate membrane fouling. RSC Adv 2018; 8:18084-18092. [PMID: 35542097 PMCID: PMC9080486 DOI: 10.1039/c8ra02304b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 05/05/2018] [Indexed: 12/04/2022] Open
Abstract
We proposed a novel method for vacuum membrane distillation (VMD) called Electric Field Assisted Vacuum Membrane Distillation (EVMD) that can be used to mitigate membrane fouling. A biaxial stretching polytetrafluoroethylene (PTFE) membrane was utilized as the base membrane, and multi-walled carbon nanotubes (MWCNTs) or a mixture of MWCNTs/graphene as a conductive substrate. During EVMD, the conductive PTFE membrane acted as the cathode while a stainless-steel wire mesh surrounding the conductive membrane acted as the anode. The effect of the per unit area loading mass (PUALM) of the conductive substrate on the membrane performance were investigated. Results revealed that for a PUALM of 10 g m−2, the PTFE membrane not only exhibited excellent conductivity but also showed a high rate of gas flux. Doping graphene into the MWCNT conductive substrate led to the formation of nano-channels which served to improve the membrane distillation flux and the membrane hydrophobicity. The effects of the electric field strength as well as humic acid (HA) concentration on the antifouling performance during EVMD were also investigated. Results showed that during EVMD, the PTFE conductive membrane exhibited the best antifouling ability using an intermittent electric field with a field strength of 1.0 V cm−1. EVMD with a PTFE electro-catalytic membrane can effectively mitigate membrane fouling.![]()
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Affiliation(s)
- Qinglin Huang
- State Key Laboratory of Separation Membranes and Membrane Process
- Tianjin Polytechnic University
- Tianjin
- P. R. China
- Department of Material Science and Engineering
| | - Huan Liu
- State Key Laboratory of Separation Membranes and Membrane Process
- Tianjin Polytechnic University
- Tianjin
- P. R. China
- Department of Material Science and Engineering
| | - Yafeng Wang
- Department of Material Science and Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- P. R. China
| | - Changfa Xiao
- State Key Laboratory of Separation Membranes and Membrane Process
- Tianjin Polytechnic University
- Tianjin
- P. R. China
- National Center for International Research on Membrane Science and Technology Tianjin Polytechnic University
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22
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Ye ZL, Hong Y, Pan S, Huang Z, Chen S, Wang W. Full-scale treatment of landfill leachate by using the mechanical vapor recompression combined with coagulation pretreatment. WASTE MANAGEMENT (NEW YORK, N.Y.) 2017; 66:88-96. [PMID: 28456456 DOI: 10.1016/j.wasman.2017.04.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 03/18/2017] [Accepted: 04/12/2017] [Indexed: 06/07/2023]
Abstract
Landfill leachate contains high concentrations of organic compounds and ammonium, and the presence of heavy metal ions, which normally requires expensive and complex treatment processes. In this study, full-scale experiments were implemented to evaluate the feasibility of mechanical vapor recompression (MVR) treating leachate. Results revealed that despite the drastic changes of influent pollutant concentrations, MVR system possessed the ability to reduce most of the pollutants and guarantee the effluent in compliance with the discharge limits of Chinese Standard. Fouling analyses revealed that the main components in the fouling were crystalline (Mg0.06Ca0.94)(CO3), combining with humus and silicon compounds. A fouling cleaning method was developed with the adding sequence of first sulphamic acid and then NaOH, which could remove 88.62% fouling. Although fouling was inevitable for MVR treating leachate, coagulation pretreatment removed large amounts of COD, BOD5, total nitrogen, ammonium and total phosphorus, with the respective means of 68.4%, 69.4%, 81.0%, 84.1% and 81.4%, and thereafter reduced the treatment cost 27.4% from 47.06 RMB (6.92 US dollars)/m3 to 34.15 RMB (5.02 US dollars)/m3. These outcomes provided that in addition to the combination method of biological removal process with membrane technology, MVR process was another feasible solution for leachate treatment.
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Affiliation(s)
- Zhi-Long Ye
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, No. 1799 Jimei Road, Xiamen City, Fujian 361021, China
| | - Yingping Hong
- Dongguan MangRove Environmental Protection Technology Co., Ltd., Building 2A, Block B5, No. 29 Yizhan Road, Dongguan City, Guangdong 523078, China
| | - Songqing Pan
- Focused Photonics (Hangzhou), Inc., 760 Bin'an Road, Binjiang District, Hangzhou 310052, Zhejiang Province, China
| | - Zhiqiang Huang
- Dongguan MangRove Environmental Protection Technology Co., Ltd., Building 2A, Block B5, No. 29 Yizhan Road, Dongguan City, Guangdong 523078, China
| | - Shaohua Chen
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, No. 1799 Jimei Road, Xiamen City, Fujian 361021, China.
| | - Wei Wang
- Dongguan MangRove Environmental Protection Technology Co., Ltd., Building 2A, Block B5, No. 29 Yizhan Road, Dongguan City, Guangdong 523078, China
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23
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Teng K, Kazi S, Amiri A, Habali A, Bakar M, Chew B, Al-Shamma'a A, Shaw A, Solangi K, Khan G. Calcium carbonate fouling on double-pipe heat exchanger with different heat exchanging surfaces. POWDER TECHNOL 2017. [DOI: 10.1016/j.powtec.2017.03.057] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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24
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Duong HC, Hai FI, Al-Jubainawi A, Ma Z, He T, Nghiem LD. Liquid desiccant lithium chloride regeneration by membrane distillation for air conditioning. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2016.12.031] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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