Membrane Technologies for Decarbonisation: Materials, Processes, and System-Level Insights

Water is needed for food processing facilities to carry out a number of tasks, including moving goods, washing, processing, and cleaning operations. This causes them to produce wastewater effluent, and they are typically undesirable since it contains a high volume of suspended solids, bacteria, dyestuffs, salts, oils, fats, chemical oxygen demand and biological oxygen demand. Therefore, treatment of food industry wastewater effluent is critical in improving process conditions, socio-economic benefits and our environmental. This short review summarizes the role of available membrane technologies that have been employed for food wastewater treatment and analyse their performance. Particularly, electrospun nanofiber membrane technology is revealed as an emerging membrane science and technology area producing materials of increasing performance and effectiveness in treating wastewater. This review reveals the challenges and perspectives that will assist in treating the food industry wastewater by developing novel membrane technologies.

A critical review of prevention, treatment, reuse, and resource recovery from acid mine drainage

Membrane processes are well-established methods in real water treatment, renowned for their compact size, exceptional treatment effectiveness, and substantial water permeation capacity. The emergence of nanomaterials has ushered in thrilling prospects and progress in the membrane technology. Silica nanoparticles (NPs SiO2), a high-purity amorphous silica powder, is a white fluffy material characterized by its small particle size, and it brings numerous benefits due to its distinctive attributes. With a large specific surface area, strong surface adsorption, considerable surface energy, high chemical purity, and excellent dispersion, it holds significant value in diverse areas like medicine, physics, chemistry, and biology. NPs-SiO2 can be categorized into hydrophilic and hydrophobic types, which offers difference application in the membrane technology. In this review, NPs-SiO2 contained membranes are specifically discussed. The main goal is to provide critical analysis on recent application of SiO2 in membrane technology. Apart from the introduction and conclusion, this review has three consecutive parts including The synthesis methods of NPs-SiO2 contained membrane including size of the NPs-SiO2 that is mostly used in membranes, the application of the hydrophobic and hydrophilic NPs-SiO2 in the membrane technology, and the future challenge of NPs-SiO2 used in membrane technology.

The interesting part of this recent published book is that it offers better understanding on the mechanism of wastewater treatment for membrane technologies, current information about technologies and limitation of wastewater treatment, recent discovered solutions from experts for wastewater treatment and information on weaknesses and solution to membrane technologies. There are 10 chapters in which wrote by the membrane expertise covering the recent progress and development of the various membrane technologies towards water and wastewater treatment. In chapter 1, overview of wastewater treatment including conventional treatment such as ion-exchange, coagulation-flocculation and adsorption has been discussed. At the end of the chapter, membrane technology and its advantages has been introduced. Chapter 2 discussed the conventional technology stated in Chapter 1 in detail. In the chapter, the advantages and disadvantages of the conventional technologies has also been stated. Example of the advantages are including depending on pH and slow process. Chapter 3 provide an insight in the recent advanced separation technology for wastewater treatment such as hybrid adsorption-separation application that can be achieved by membrane technology and membrane distillation application. Meanwhile, Chapter 4 addressed in detail the recent progress of adsorptive ultrafiltration mixed matrix membrane for heavy metals removal such as zinc, nickel and chromium. In chapter 5, photocatalytic membrane has been introduced in the chapter with the brief mechanism on the photocatalytic activity has also been explained. Chapter 6 focussed on the membrane distillation for wastewater treatment. In the chapter, various membrane distillation type has been stated with example of recent works such as direct contact membrane distillation (DCMD), air gap membrane distillation (AGMD), vapour membrane distillation (VMD) and sweeping gas membrane distillation (SGMD). In Chapter 7, integrated forward osmosis processes have been described such as FO-MD, FO-RO or both. Chapter 8 introduced ceramic membrane technology to the readers in the book with new alternative material in production of low-cost ceramic membrane. In Chapter 9, recent works on metal organic framework (MOF) including MOF membrane for wastewater separation has been explained. In the last Chapter 10, some potential solution to overcome weaknesses of advanced membranes technologies for wastewater treatment are also discussed. Future recommendation for these technologies is also discussed at the end of the book. This book focused on the collection of recent progress related to advanced membrane technologies towards water and wastewater treatment, for example forward osmosis and membrane distillation. This book has been written by membrane experts from Malaysia and India, providing an insight of recent progress on advanced membrane technologies. This book will be the vital references for the researchers, students, membrane technologist, membrane manufacturer and academicians. Some improvement can be made by adding several interesting topics such as incorporation of waste inorganic materials into polymeric membranes and commercial ceramic membrane that made up from alumina and titania. In addition, some integrated technologies combining two advanced membrane technologies such as integrated forward osmosis and membrane distillation can be interesting if discussed.

Although membrane technology has been widely applied in water treatment, membrane fouling is an inevitable issue that has largely limited its application. Benefiting from the advantages of green power, easy integration and low chemical consumption, electrocatalytic membrane (ECM) technology received attention, using it to enable electrically driven self-cleaning performance recently, making it highly desirable for sustainable fouling control. In this work, we comprehensively summarized the conventional (e.g., carbonaceous materials, metal and metal oxide) and emerging (e.g., metal–organic framework and MXene) materials for the fabrication of an ECM. Then the fabrication methods and operating modes of an ECM were emphasized. Afterwards, the application of different ECM materials in membrane fouling control was highlighted and the corresponding mechanism was revealed. Based on existing research findings, we proposed the challenges and future prospects of ECM materials for practical application. This study provides enlightening knowledge into the development of ECM materials for sustainable fouling control.

Investigators are studying hydrogen purification by membrane technology as a means to make the coal-to-hydrogen route economically attractive. To allow prediction of membrane performance and to facilitate comparisons between membrane and other technologies (cryogenic distillation, pressure swing adsorption), they developed a mathematical model to describe the permeation process inside a membrane module. The results of this model were compared with available experimental data (separation of CO{sub 2}/O{sub 2}/N{sub 2} mixtures). The model was first used to calculate the gas permeabilities from one set of mixed-gas experiments; the resulting permeabilities were then used to predict the results of the other mixed-gas experiments. The agreement between these predictions and the experimental data was good. However, model predictions using gas permeabilities obtained in pure gas experiments did not agree with the mixed gas experimental data. This disagreement is believed to be due to plasticization of the membrane by contact with CO{sub 2}. These results indicate that data obtained from experiments with mixed-gas feeds are necessary to adequately predict membrane performance when CO{sub 2} is present. The performance of different system configurations, including one and two stages of membrane modules, was examined. The different configurations examined were single module (SM), single module with recycle (SMR), series (SER), and two stage cascade with interstage compression (CAS). In general, SM is the most economical configuration for producing low purity products, SER for medium purity products, and CAS for high purity products. 7 refs., 12 figs., 8 tabs.

Ultrasound-assisted membrane technologies for fouling control and performance improvement: A review

Integrating artificial intelligence modeling and membrane technologies for advanced wastewater treatment: Research progress and future perspectives

The increase in anthropogenic emissions of greenhouse gases, especially carbon dioxide (CO2), has caused global temperatures to rise, requiring the implementation of effective solutions to mitigate the carbon emissions such as Carbon Capture and Storage (CCS). Even though CCS holds potential, there are concerns surrounding the capacity for CO2 storage and the potential for leakage. This study investigates the water utilization and energy consumption for the dissolution of captured CO2 of three technologies -scrubbing, nanobubble and membrane technologies. We constructed a spreadsheet model utilizing Henry's law to forecast the amount of water needed and energy used for each technology considering parameters such as temperatures, pressures, and CO2 gas content in the gas mixture. Scrubbing and membrane technologies necessitate a larger amount of water due to constraints on solubility as compared to nanobubble technologies, for which solubility is not limited by Henry’s solubility limit. Furthermore, membrane technology is notable for being the most energy-efficient approach, as it does not require gas compression for membrane permeation. Although the use of freshwater is more energy efficient, the large availability of seawater may offset energy consumption concerns. This study highlights membrane technology as a cost-effective and energy-efficient method for dissolving CO2.

Poultry slaughterhouses produce a large amount of wastewater, which is usually treated by conventional methods. The traditional techniques face some challenges, especially the incapability of recovering valuable nutrients and reusing the treated water. Therefore, membrane technology has been widely adopted by researchers due to its enormous advantages over conventional methods. Pressure-driven membranes, such as microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO), have been studied to purify poultry slaughterhouse wastewater (PSWW) as a standalone process or an integrated process with other procedures. Membrane technology showed excellent performance by providing high efficiency for pollutant removal and the recovery of water and valuable products. It may remove approximately all the pollutants from PSWW and purify the water to the required level for discharge to the environment and even reuse for industrial poultry processing purposes while being economically efficient. This article comprehensively reviews the treatment and reuse of PSWW with MF, UF, NF, and RO. Most valuable nutrients can be recovered by UF, and high-quality water for reuse in poultry processing can be produced by RO from PSWW. The incredible performance of membrane technology indicates that membrane technology is an alternative approach for treating PSWW.

Advancing membrane technologies for wastewater treatment and reclamation in selected Arab MENA countries

Challenges and trends in membrane technology implementation for produced water treatment: A review

Enhanced oil recovery from fractured carbonate reservoir using membrane technology

Chapter 5 - Water Treatment by Membrane Filtration Techniques

Research in membrane technology for desalination and water re-use in the USSR