A review of emerging trends in membrane science and technology for sustainable water treatment

Yusuf, Ahmed; Sodiq, Ahmed; Giwa, Adewale; Eke, Joyner; Pikuda, Oluwadamilola; Luca, Giorgio De; Salvo, Javier Luque Di; Chakraborty, Sudip

doi:10.1016/j.jclepro.2020.121867

Cited by 223 publications

(87 citation statements)

References 121 publications

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“…However, it may not be a viable solution for water-stressed regions that are located a long distance from the coast or at a high altitude [9,24]. The reuse of municipal wastewater could be a viable alternative to address water scarcity for these cases [6,14,25]. In this context, there are already European countries that reuse treated wastewater for non-potable and potable uses [2].…”

Section: City Country Distance (Km) Elevation (M)mentioning

confidence: 99%

“…Among these alternative water supply technologies, membrane-based separation processes, particularly reverse osmosis, provide an opportunity to deal with water scarcity in many water-stressed regions around the world [6][7][8][9]. At present, seawater reverse osmosis dominates the desalination market; around 66 million m 3 /d were produced worldwide, which accounts for 69% of the total desalinated water [4].…”

Section: Introductionmentioning

confidence: 99%

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Municipal Wastewater Reuse: Is it a Competitive Alternative to Seawater Desalination?

Crutchik

Campos

2021

Sustainability

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Water scarcity is becoming a global challenge to attempts to narrow the water demand–supply gap. To overcome this problem, it is sensible to consider alternative technologies that can exploit non-conventional water resources. The choice of such technologies should be, however, carefully analyzed, because any choice might be unfeasible from an economic point of view. In this work, a methodology to select the most appropriate non-conventional water resource, out of municipal wastewater and seawater, was proposed. Specifically, we attempted to determine which alternative provides cheaper water supply and production costs for domestic uses, depending on the wastewater treatment system used and the water plant capacity. The production of water under three scenarios was analyzed: (i) a city that has a conventional wastewater treatment plant (WWTP); (ii) a city that uses primary treatment and submarine outfalls to treat municipal wastewater; (iii) seawater desalination. The proposed methodology was tested in Chilean cities that are located in areas where water is a scarce resource. The results showed that the reuse of municipal wastewater represents a cost-competitive alternative to seawater desalination, mainly when municipal wastewater is treated in a conventional WWTP and when water flow demand is higher than 1500 m3/d. In contrast, seawater desalination becomes more profitable than wastewater reuse when the treatment of municipal wastewater is based on the use of submarine outfalls. This study provides a useful economic tool for promoting municipal wastewater reuse as a non-conventional water source for supplying water to cities that suffer from water scarcity in Chile and in similar areas of the world.

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Section: City Country Distance (Km) Elevation (M)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Municipal Wastewater Reuse: Is it a Competitive Alternative to Seawater Desalination?

Crutchik

Campos

2021

Sustainability

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“…A critical and comprehensive review of emerging trends in sustainable membrane-based wastewater treatment was published elsewhere. 5 The biocidal activity of silver has been described since the beginning of human society. More recently, the synthesis of silver nanoparticles (AgNPs) has opened a new spectrum of applications in many therapeutic and sanitizing devices because of their high antimicrobial and virucidal activity.…”

Section: Introductionmentioning

confidence: 99%

Silver nanoparticle filter for domestic wastewater reuse

Gagnetén

Romero

Reno

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: Under scarcity of freshwater, the reuse and low-cost technological solutions applied to wastewaters seek to reduce contamination to the users and freshwater biota. RESULTS: A low-cost cellulose membrane was doped with silver nanoparticles to filter urban wastewater (UW) from a city in Argentina. The total amount of coliforms and Escherichia coli in the filter decreased by 99.6% and 99.9%, respectively. The leak of silver from the filter was 275 ng L −1 , analyzed by square wave anodic stripping voltammetry. Silver nanoparticles tested on HepG2 and A549 mammalian cell lines showed no toxicity in a broad concentration range. Calculation of the organic matter provided by dead bacteria post-filtration was 347 ∼g L −1 proteins, 148 ∼g L −1 nucleic acids, 57 ∼g L −1 lipids, and 53 ∼g L −1 polysaccharides, indicating high availability of organic matter. The retention of inorganic salts in the filter was 78.5% ammonia, 6.2% nitrates, 97.6% nitrites, and 19.2% phosphates. In post-filtered UW, the Lactuca sativa germination test showed early seed germination between 90% and 95% in all the dilutions tested. In the range of 6.25% to 50.0%, filtered UW showed no significant differences in the hypocotyl but the difference was significant in the radicle length (mm) compared to the control made of synthetic media (P < 0.05). CONCLUSION:The development of a low-cost filter based on cellulose membranes doped with silver nanoparticles allowed the reuse of wastewater for domestic purposes and garden irrigation.

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“…Membrane-based separation has earned its place in a wide spectrum of commercial applications. Over the last few decades, progressive growth has been witnessed in the application of membrane technology in wastewater treatment, desalination, gas separation and energy generation [ 1 , 2 , 3 ]. With its commercial attractiveness based on advantages such as high energy efficiency, low carbon footprint and operational simplicity, attaining a reliable and sustainable separation process based on membrane technology is one of the greatest areas of interest in this field [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Nanocomposite Membranes for Liquid and Gas Separations from the Perspective of Nanostructure Dimensions

2020

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One of the critical aspects in the design of nanocomposite membrane is the selection of a well-matched pair of nanomaterials and a polymer matrix that suits their intended application. By making use of the fascinating flexibility of nanoscale materials, the functionalities of the resultant nanocomposite membranes can be tailored. The unique features demonstrated by nanomaterials are closely related to their dimensions, hence a greater attention is deserved for this critical aspect. Recognizing the impressive research efforts devoted to fine-tuning the nanocomposite membranes for a broad range of applications including gas and liquid separation, this review intends to discuss the selection criteria of nanostructured materials from the perspective of their dimensions for the production of high-performing nanocomposite membranes. Based on their dimension classifications, an overview of the characteristics of nanomaterials used for the development of nanocomposite membranes is presented. The advantages and roles of these nanomaterials in advancing the performance of the resultant nanocomposite membranes for gas and liquid separation are reviewed. By highlighting the importance of dimensions of nanomaterials that account for their intriguing structural and physical properties, the potential of these nanomaterials in the development of nanocomposite membranes can be fully harnessed.

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A review of emerging trends in membrane science and technology for sustainable water treatment

Cited by 223 publications

References 121 publications

Municipal Wastewater Reuse: Is it a Competitive Alternative to Seawater Desalination?

Municipal Wastewater Reuse: Is it a Competitive Alternative to Seawater Desalination?

Silver nanoparticle filter for domestic wastewater reuse

Nanocomposite Membranes for Liquid and Gas Separations from the Perspective of Nanostructure Dimensions

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