Related references
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Article
Engineering, Chemical
Elena Guillen-Burrieza et al.
Summary: This study demonstrates the application of flat sheet membrane distillation technology for the recovery of ammonia from wastewater treatment plants. The results show that it is possible to recover 90% of the water-bound ammonia at low temperature and specific thermal energy conditions. Although the recovered product has a lower concentration than conventional fertilizers, it is of high quality and volume reduction, making it a potential fertilizer solution for local needs.
JOURNAL OF MEMBRANE SCIENCE
(2023)
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Chang Liu et al.
Summary: An integrated ultrasonic stripping (US)-membrane distillation (MD) system was developed to efficiently purify mariculture wastewater. The US-MD technique exhibited excellent removal efficiency for NH4+-N and significantly reduced membrane fouling compared to sole MD. Ultrasonic cavitation effect in the US unit promoted protein denaturation and salt crystallization, resulting in a high removal efficiency for proteins and phosphate before the MD unit. The operating parameters of the US-MD system greatly influenced its purification efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Multidisciplinary Sciences
Monis Bin Abid et al.
Summary: Water is crucial for human survival, particularly in arid regions or places with limited fresh water. Desalination is an effective method for meeting the increasing water demand. Membrane distillation technology, which operates at low temperature and pressure, is used for water treatment and desalination. However, the challenges of water efficacy and biofouling arise due to the lack of suitable and versatile membranes. Researchers have explored different membrane composites to develop efficient and biofouling-resistant membranes for membrane distillation.
Article
Agricultural Engineering
Jiefei Mo et al.
Summary: This study compares nitrogen transformation and loss between bioaugmented mechanical composting (BMC) and conventional pile composting (CPC), finding that the total nitrogen loss in BMC is 6.87-39.32% lower than that in CPC. The main pathways to prevent nitrogen loss in BMC include reducing NH3 by avoiding a sharp increase in pH and transforming preserved NH4+-N into recalcitrant nitrogen reservoir via enhanced ammonia assimilation.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yubin Wang et al.
Summary: A minichannel membrane distillation device (MMDD) was developed to enhance the permeation flux and reduce the polarization effect. By reducing the gap size, increasing the feed temperature and flow rate, and employing countercurrent flow, the MMDD achieved a 160% increase in permeation flux and a 35% increase in temperature polarization coefficient compared to conventional membrane distillation devices.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Environmental
Flavia C. R. Costa et al.
Summary: This article discusses the mechanisms and operational conditions of membrane distillation for the removal of trace organic compounds (TrOCs) and highlights its potential in generating high-quality water, removing TrOCs efficiently, and enabling water reuse. It is found that the volatility of TrOCs is the most influential factor in membrane distillation, and non-volatile compounds and hydrophilic TrOCs are more easily removed. The article also points out the limitations of membrane distillation in industrial applications, such as the treatment of volatile TrOCs and membrane fouling.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Jianmin Li et al.
Summary: This study explored the optimal operating conditions for a sponge iron biofilter (SIBF) treating low ammonia wastewater, and found that a hydraulic retention time (HRT) of 9 h and a gas-water ratio (R) of 9:1 achieved a total inorganic nitrogen removal efficiency of 77.2%, with effluent ammonia and total inorganic nitrogen concentrations below 5 mg/L and 15 mg/L, respectively. Stable isotope tracing analysis showed that 92.8% of N2O was derived from ammonia, with nitrifier denitrification being the dominant production pathway. The microbial community analysis identified key bacteria involved in nitrogen removal in SIBF, including Nitrosomonas, Nitrotoga, Nitrospira, Dechloromonas, Thiobacillus, and Brocadia.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Chemical
Zhong Sheng Tai et al.
Summary: Membrane distillation (MD) is a thermal and membrane process that uses a hydrophobic membrane to separate volatile solutes at high temperatures. Although MD has excellent separation efficiency at low pressure, its commercialization has been hindered by low flux performance. This article reviews four key membrane innovations that could enhance the flux performance of MD and provides an update-to-date review of high-flux MD membrane innovations. The economic potential of MD membranes is also addressed.
Article
Green & Sustainable Science & Technology
Wenda Kang et al.
Summary: Electrochemical technology effectively removes nitrate from recirculating aquaculture saltwater. An electrochemical filter with mesh electrodes was created to increase diffusion distance and counteract electrostatic repulsion. The filter achieved a nitrate concentration of 2.0 mg/L, meeting the water quality standard for aquatic mammals in aquariums.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Chemical
Yusen Luo et al.
Summary: Membrane wetting is a major problem in membrane distillation, but little information is available on the spatial and temporal behavior of wetting along the membrane. In this study, a non-invasive and online monitoring technique called ultrasonic time-domain reflectometry (UTDR) was used to evaluate the effects of operating conditions and membrane hydrophobicity on the progression of wetting along the membrane. UTDR measurements successfully distinguished wetting dynamics and were validated by offline characterization methods. The study showed that wetting depth decreases along the feed flow direction and is influenced by operating conditions and membrane properties.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
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Cheng Chu et al.
Summary: Biochar amendment accelerates the mineralization rate of labile organic nitrogen, increases total nitrogen content, and reduces the risk of ammonia volatilization. However, it can increase gaseous nitrogen losses in flooded paddy soils.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Chemical
Anthoula Karanasiou et al.
Summary: This study systematically investigates the application of Vacuum Membrane Distillation (VMD) for recovering ammonia after phosphates precipitation, aiming to develop a sustainable process for utilizing anaerobic-fermentation liquid-digestates. Batch tests and targeted experiments with industrial digestate samples were conducted to determine the optimal conditions for ammonia recovery. Under specific conditions of low TAN concentration, modest temperature and driving force, VMD achieved high ammonia removal fraction with fair selectivity. The study also proposes an approach for realistic preliminary design of a continuous VMD-based process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Wenqi Xue et al.
Summary: The effects of O3 and O3/UV treatments on aquaculture water quality and safety during culture of crucian carp were tested in this study. The treatments reduced the concentration of dissolved organic carbon (DOC) and destroyed the refractory organic lignin-like features. O3 and O3/UV treatments enriched ammonia oxidizing and denitrifying bacteria, and increased the abundance of N-cycling functional genes.
Review
Engineering, Environmental
Yangjie Qin et al.
Summary: This article reviews the advances and challenges in nitrogen removal and recovery methods, summarizes several nitrogen up-concentration technologies, and discusses the role of pretreatment and post-treatment technologies in enhancing the adaptability of up-concentration technologies. A new workflow that combines concentration with targeted conversion processes is proposed to achieve high concentration factors, meet discharge standards, and harvest valuable products.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Lei Xu et al.
Summary: Landfill leachate from domestic waste contains high-strength nitrogen. The combination of anoxic and aerobic process (AO) based on nitrification and denitrification is commonly used for biological nitrogen removal (BNR). However, the presence of high-strength organics and the reflux of aerobic effluent may affect the performance of the AO process. By studying the nitrogen balance in a landfill leachate treatment plant, it was found that the primary anoxic and aerobic stages were responsible for approximately 90% removal of total nitrogen (TN) and ammonia (NH4+-N). The dominance of ammonia assimilation in the BNR mechanism of landfill leachate in AO was identified, providing valuable insights for optimizing engineering design and operation.
Article
Biochemistry & Molecular Biology
Weichun Pan et al.
Summary: The interaction between potassium iodide and protein molecules under different temperature induction was studied using fluorescence spectrum, infrared spectrum, and diffusing wave spectroscopy. The study found that potassium iodide formed a 1:1 complex with bovine serum albumin (BSA)/ovalbumin (OVA) and significantly affected their hydrodynamic radius and spatial structure. The unfolding of protein structures induced the interaction between potassium iodide and proteins, leading to changes in particle size and surface charge.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Chemical
Junyang Zhang et al.
Summary: In this study, a photocatalytic membrane reactor system combining Ag@BiOBr photocatalyst and polyvinylidene fluoride (PVDF) ultrafiltration was constructed, showing remarkable anti-fouling and self-cleaning properties for wastewater treatment. The Ag@BiOBr/PVDF photocatalytic ultrafiltration membrane achieved enhanced water flux and higher foulant rejection efficiency, and effectively decomposed foulants to prevent membrane pore blockage. This study provides theoretical support for the development of novel photocatalytic membranes with sustainable anti-fouling performance.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Bhaskar Jyoti Deka et al.
Summary: Wetting, fouling, and scaling are major challenges in membrane distillation (MD) technology, and novel membrane fabrication methods are being explored to address these issues. In this study, a hydrophobic membrane was successfully fabricated using PVDF polymer and ethanol as a coagulation bath. The membrane's wetting, fouling, and scaling properties were evaluated using electrochemical impedance spectroscopy (EIS) and direct contact membrane distillation (DCMD). The fabricated PVDF membrane exhibited a high hydrophobicity, narrow pore size distribution, and high porosity. Different stages of pore wetting were analyzed using the EIS approach. The membrane showed promising performance for DCMD application under various feed compositions.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Chian Yong Loh et al.
Summary: Due to the challenges posed by the volatility of ammonia and the condensation of water and ammonia, obtaining high concentration ammonia or high-quality water using conventional vacuum membrane distillation (VMD) is difficult. This study developed a reactive VMD (RVMD) with a two-stage downstream system to simultaneously recover ammonia and water from brackish aquaculture effluent with dilute ammonia content. The RVMD system allowed for the complete recovery of dilute ammonia in acid solution, intensifying the separation factor (SF) and concentration factor (CF) by 16 times within 2 hours compared to a conventional VMD system. The RVMD system dissolved ammonia in acid solution without chilling using an immersed trap tube, followed by water vapor condensation under chilling to obtain clean water. The recovered ammonia could be concentrated by 23 times with an SF of 148, while the recovered water had a very low ammonia content of 0.04 mg/L. These findings highlight the superior performance of RVMD with a two-stage downstream system in concentrating ammonia and purifying water.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Valentina Cechetto et al.
Summary: Copper-exchanged faujasite (Cu-FAU) zeolites were used as promising adsorbent materials for further purifying hydrogen obtained from ammonia decomposition in a membrane reactor. The introduction of copper species in the zeolites enhanced their NH3 adsorption and saturation capacities. However, Cu-FAU zeolites synthesized with copper(II) nitrate trihydrate and calcined in air showed deactivation after the first adsorption/desorption cycle. On the other hand, ion-exchange procedure in the presence of ammonium hydroxide and calcination in an inert environment prevented dealumination and showed stable performance. The one-time ion-exchanged form of zeolite 13X was found to be the most promising adsorbent material for effectively purifying NH3-derived H2 produced via ammonia decomposition in a membrane reactor.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Hiras Ahamed Hijaz et al.
Summary: Temperature polarisation (TP) is a major drawback for membrane distillation (MD) technology. The conventional Temperature Polarisation Coefficient (TPC) is an ineffective tool to study TP along the membrane. This research measures the temperature profile along a lengthy DCMD membrane and explores its impact on TP. The results show that TP is not constant along the membrane and the temperature profile is asymmetric due to the effects of inlet and outlet on flow.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Yan Zhang et al.
Summary: An efficient electrochemical system was developed to simultaneously remove total nitrogen and dissolved organic compounds in wastewater reclamation by utilizing chlorine radicals. Co3O4 nanowires outperformed other nanomaterials, achieving high removal rates for NH3-N and DOC in synthetic ROC.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Fida Tibi et al.
Summary: This study aimed to observe the interactive effects of ammonium and sodium alginate on rejection efficiency and organic fouling in direct contact membrane distillation process. Increasing feed temperature reduced fouling rate, while adding ammonium chloride decreased the rejection efficiency of total organic carbon. Internal fouling caused by pore constriction was more dominant with the addition of ammonium into SA solution, especially at low solution pH.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Junghyun Kim et al.
Summary: This study elucidates the physicochemical mechanisms of monovalent and multivalent inorganic scaling and proposes an optimal cleaning strategy for membrane distillation (MD) operation. The three stages of inorganic scaling in MD were identified through experimental measurements, membrane analysis, and simulation, as well as the effects of saturation index and supersaturation on scaling.
Article
Engineering, Environmental
Nan Sun et al.
Summary: A mathematical model based on capillary-film assumption was developed to understand the effects of graphene oxide (GO) coating on membrane distillation (MD). The results showed that placing GO layer at the evaporation interface significantly increased the temperature difference across the membrane surface, leading to higher heat and mass flux. However, the vapor pressure reduction due to Kelvin effect of GO capillary pores had a negative influence on the driving force. Placing GO layer at the condensation interface reduced the temperature difference but increased the mass flux, primarily due to the reduced vapor pressure on GO capillary pores.
Article
Chemistry, Multidisciplinary
Yamin Li et al.
Summary: A multilayer-loaded hydrogel membrane with superior antifouling property is reported, which enhances the stability and fouling resistance of the membrane through cross-linking and super hydrophilic surface, showing practical application potential in the field of water treatment.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Engineering, Chemical
Bing Zhang et al.
Summary: This study investigates the use of ion-nucleating competition and commercial antiscalants to mitigate membrane scaling in membrane distillation for hypersaline wastewater treatment. The results show that introducing foreign ions can delay gypsum nucleation and improve membrane performance, especially when combined with commercial antiscalants. This novel approach provides a solution for managing hypersaline wastewater and is important for achieving near-zero liquid discharge.
Article
Engineering, Chemical
Ritesh Pawar et al.
Summary: This study investigated the treatment of produced water from the Permian Basin using Membrane Distillation (MD). The results showed that MD is a potential solution for the beneficial reuse of produced water by recovering 50% of the water and generating high-quality permeate.
Article
Engineering, Environmental
Bin Liu et al.
Summary: The study found that UV/ClO2 pretreatment can effectively alleviate ultrafiltration membrane fouling, improve membrane hydrophilicity and interfacial free energy. It can also remove organic pollutants and fluorescent components, but may lead to the deterioration of dissolved organic carbon in the permeate.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
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Engineering, Environmental
Shujuan Gao et al.
Summary: A combined model was established to study the fouling behavior of a membrane fouled with extracellular polymer substance under different operating conditions. The model predictions had good agreements with experimental data and the transition point and time of different fouling mechanisms were determined.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Agricultural Engineering
Yifei Gao et al.
Summary: The electrooxidation-BAFs were able to efficiently remove ammonia and nitrite in low nutrient seawater in a recirculating aquaculture system, resulting in higher functional bacteria enrichment and improved cultivation effects for Sebastes schlegelii.
BIORESOURCE TECHNOLOGY
(2021)
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Weiwei Cai et al.
Summary: The study demonstrated that high concentration NaCl significantly exacerbated the formation of HA fouling, while mitigating the development of BSA fouling. Under high salinity conditions, there was a substantial increase in electrostatic attraction and thermodynamic interactions between HA-HA and HA-membrane.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Zhigao Zhu et al.
Summary: The membrane distillation (MD) is an attractive desalination technology for further recovering highly concentrated brines with the advantages of high water recovery and salts rejection efficiency. However, advancing flux and tackling scaling of MD membrane are ongoing challenges due to the increasing temperature and concentration polarizations during the concentration process. The study systematically investigated the membrane interface structure and common operating conditions on membrane flux and scaling resistance using reverse-osmosis concentrated seawater (ROCS) as a typical target.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Green & Sustainable Science & Technology
Sofiane Soukane et al.
Summary: This study investigates the dynamics of scaled-up membrane distillation modules for treating highly saline desalination brines. By using a multicomponent computational fluid dynamics model, the physical phenomena such as temperature evolution, species distribution, and scaling likelihood during process scale-up were explored. Results show that the permeate flux drops significantly with increasing salinity, mainly due to scaling caused by calcium sulfate.
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