Greywater characteristics, impacts, treatment, and reclamation using adsorption processes towards the circular economy

Khajvand, Mahdieh; Mostafazadeh, Ali Khosravanipour; Drogui, Patrick; Tyagi, Rajeshwar Dayal; Brien, Emmanuel

doi:10.1007/s11356-021-16480-z

Cited by 25 publications

(12 citation statements)

References 150 publications

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“…A set of equilibrium concentration data between the amount of adsorbate in the adsorbent ( q e ) and the amount of adsorbate still present in the liquid phase ( C e ) were gathered under equilibrium circumstances in order to derive an adsorption isotherm. The relation between C e and q e according to the mass balance is given by eqn (1): 33 V and m are the initial volume of the solution and the mass of the adsorbent.…”

Section: Methodsmentioning

confidence: 99%

Removal of nonylphenol ethoxylate from laundry wastewater using modified and functionalized activated carbon

Khajvand

Drogui

Pichon

et al. 2023

Environ. Sci.: Water Res. Technol.

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Section: Methodsmentioning

confidence: 99%

Removal of nonylphenol ethoxylate from laundry wastewater using modified and functionalized activated carbon

Khajvand

Drogui

Pichon

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…To date, a major challenge for the large-scale separation and purification of wastewater remains the lack of low-cost, highly efficient, and conventionally applicable wastewater treatment technology. Membrane separation technology has seen considerable progress in recent years, even though water treatment technologies such as adsorption [ 4 , 5 ], flocculation [ 6 , 7 ], ion exchange [ 8 , 9 ], and distillation [ 10 ] have been commercialized for decades. In addition to judiciously removing multiple impurities, it is simple and fast to operate and requires no or minimal chemical additions in the application process.…”

Section: Introductionmentioning

confidence: 99%

Amphiphilic Grafted Polymers Based on Citric Acid and Aniline Used to Enhance the Antifouling and Permeability Properties of PES Membranes

et al. 2023

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Water treatment technology based on ultrafiltration (UF) faces the problem of severe membrane fouling due to its inherent hydrophobicity. The use of amphiphilic polymers that possess both hydrophobic and hydrophilic chain segments can be advantageous for the hydrophilic modification of UF membranes due to their excellent combination in the membrane matrix. In the present study, we examined a novel amphiphilic CA–g–AN material, constructed by grafting citric acid (CA) to aniline (AN), as a modified material to improve the hydrophilicity of a PES membrane. This material was more compatible with the polymer membrane matrix than a pure hydrophilic modified material. The polyethersulfone (PES) membranes modified by amphiphilic CA–g–AN demonstrated a higher water flux (290.13 L·m−2·h−1), which was more than eight times higher than that of the pure PES membrane. Furthermore, the flux recovery ratio (FRR) of the modified membrane could reach 83.24% and the value of the water contact angle (WCA) was 76.43°, demonstrating the enhanced hydrophilicity and antifouling ability of the modified membranes. With this study, we aimed to develop a new amphiphilic polymer to improve the antifouling property and permeability of polymer-based UF membranes to remove organic pollutants from water.

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“…As water resources are becoming limited due to increase in population, urbanization efforts, mass housing, and decrease in clean receiving water bodies in parallel to the effect of climate change, penetrating into alternative water resources, have accelerated all around the world, especially in countries/ regions experiencing water scarcity and shortage. The common alternatives of concern in adaptation to climate change are mainly rainwater harvesting (Ghaffarian Hoseini et al, 2016;Merville-Screeve et al, 2016;Campisano et al, 2017;Musayev et al, 2018), graywater reuse (Vuppaladadiyam et al, 2019;Elhegazy and Eid, 2020;Anuja et al, 2021;Khajvand et al, 2022), reuse of treated wastewater (Angelakis and Bontoux, 2001;Mizyed, 2013;Ofori et al, 2021), and desalination of seawater (Navarro, 2018;Zhu et al, 2019;Pistocchi et al, 2020), which are all regarded satisfactory applications as urban nature-based solutions and green infrastructure as strategies for climate change adaptation. In the transition to the "Circular Economy," which is defined as the most important strategy of adaptation to climate change within the EU Green Deal Policy, it has become imperative to ensure "water circularity" (EC, 2019).…”

Section: Introductionmentioning

confidence: 99%

Climate change adaptation exertions on the use of alternative water resources in Antalya, Türkiye

Kilinc

Tanık²,

Hanedar³

et al. 2023

Front. Environ. Sci.

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This study presents the payback periods of applying rainwater harvesting (RWH) and/or graywater reuse (GWR) systems as alternative water resources in different building typologies, such as a hospital, shopping mall, and hotel. These buildings are under operation in the Antalya Province of Türkiye, which is a large city having the densest tourism activities. The significance of the work performed through the cost-benefit analyses for the selected case studies basically lies on the water savings while serving to four of the sustainable development goals, namely, clean water and sanitation, sustainable cities and communities, responsible consumption and production, and climate action. These efforts may be considered valuable urban-based solutions toward climate change effects. Thorough surveys on the existing selected typologies are conducted regarding their water consumption and probable water savings via reuse activities. As-built plumbing projects and plans are also investigated during the accomplishment of the comprehensive design work leading to the calculation of the total investment and operation costs of the rainwater harvesting and graywater reuse practices. The up-to-date prices are used in monetary terms, and euro currency is used to make the results more meaningful by the interested parties. All the selected typologies undergo cost-benefit analysis for both of the alternative water reuse systems. The payback periods are calculated as 6, 2, and 9 years for RWH and as 5, 6, and 9 years for GWR for the hospital, shopping mall, and the hotel, respectively. The water savings for RWH varied between 20% and 50% whereas for GWR, the range was 48%–99%. Both of the systems are performed for the shopping mall simultaneously, and the resulting payback period is found to be 5 years, and water saving reached 72%. Recent information on the amortization periods in the literature states that less than a decade demonstrates achievable and highly acceptable applications. As such, the design attempts in this study also correlated with these findings. However, feasibility of these practices may be increased by encouraging the public on their utility and benefit of water savings. As is the case in many of the developed countries, incentives like tax reductions and even exemptions may be realized to achieve better applicability of these alternative technologies.

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Greywater characteristics, impacts, treatment, and reclamation using adsorption processes towards the circular economy

Cited by 25 publications

References 150 publications

Removal of nonylphenol ethoxylate from laundry wastewater using modified and functionalized activated carbon

Removal of nonylphenol ethoxylate from laundry wastewater using modified and functionalized activated carbon

Amphiphilic Grafted Polymers Based on Citric Acid and Aniline Used to Enhance the Antifouling and Permeability Properties of PES Membranes

Climate change adaptation exertions on the use of alternative water resources in Antalya, Türkiye

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