New hydrogel materials for improving solar water evaporation, desalination and wastewater treatment: A review

Sharshir, Swellam W.; Algazzar, Almoataz M.; Elmaadawy, Khaled; Kandeal, A.W.; Elkadeem, M.R.; Arunkumar, T.; Zang, Jianfeng; Yang, Nuo

doi:10.1016/j.desal.2020.114564

Cited by 173 publications

(45 citation statements)

References 96 publications

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“…To standardize the uncontrollable release of these unsafe toxins in water, either originating from natural or wastewater sources, innovative and modern water treatment tools are offered worldwide. Numerous methods, for instance, ion exchange, membrane filtration, sola water evaporation, electrochemical process and others, have been applied to eradicate these lethal chemicals [ 24 , 25 , 26 , 27 ]. Nevertheless, the conventional methods seem to be inappropriate to apply in the elimination of heavy metals at low levels.…”

Section: Introductionmentioning

confidence: 99%

Removal of Chromium(III) and Cadmium(II) Heavy Metal Ions from Aqueous Solutions Using Treated Date Seeds: An Eco-Friendly Method

et al. 2021

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The aim of the research was to prepare low-cost adsorbents, including raw date pits and chemically treated date pits, and to apply these materials to investigate the adsorption behavior of Cr(III) and Cd(II) ions from wastewater. The prepared materials were characterized using SEM, FT-IR and BET surface analysis techniques for investigating the surface morphology, particle size, pore size and surface functionalities of the materials. A series of adsorption processes was conducted in a batch system and optimized by investigating various parameters such as solution pH, contact time, initial metal concentrations and adsorbent dosage. The optimum pH for achieving maximum adsorption capacity was found to be approximately 7.8. The determination of metal ions was conducted using atomic adsorption spectrometry. The experimental results were fitted using isotherm Langmuir and Freundlich equations, and maximum monolayer adsorption capacities for Cr(III) and Cd(II) at 323 K were 1428.5 and 1302.0 mg/g (treated majdool date pits adsorbent) and 1228.5 and 1182.0 mg/g (treated sagai date pits adsorbent), respectively. It was found that the adsorption capacity of H2O2-treated date pits was higher than that of untreated DP. Recovery studies showed maximal metal elution with 0.1 M HCl for all the adsorbents. An 83.3–88.2% and 81.8–86.8% drop in Cr(III) and Cd(II) adsorption, respectively, were found after the five regeneration cycles. The results showed that the Langmuir model gave slightly better results than the Freundlich model for the untreated and treated date pits. Hence, the results demonstrated that the prepared materials could be a low-cost and eco-friendly choice for the remediation of Cr(III) and Cd(II) contaminants from an aqueous solution.

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Section: Introductionmentioning

confidence: 99%

Removal of Chromium(III) and Cadmium(II) Heavy Metal Ions from Aqueous Solutions Using Treated Date Seeds: An Eco-Friendly Method

et al. 2021

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“…Meanwhile, nanotechnology’s use in wastewater treatment has also been recorded in the literature. Noman et al, for example, looked at how bimetallic bionanoparticles inactivated antibiotic-resistant E. coli (Gram-negative) and Staphylococcus aureus (Gram-positive) bacteria seeded in greywater [ 34 ]. According to the inactivation mechanism, the bacterial cells were inactivated due to disruption to the bacterial cell wall’s carbohydrates and protein structures [ 35 ].…”

Section: Virus Disinfection Via Conventional Methodsmentioning

confidence: 99%

A review on the potential of photocatalysis in combatting SARS-CoV-2 in wastewater

Nasir

Awang

Hubadillah

et al. 2021

Journal of Water Process Engineering

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“…As such, solar evaporators with multifunctionality (e.g., bacterial inactivation, contaminant degradation and adsorption) is highly sought after. [ 350 ] The discussion thus far has demonstrated that hydrogels show superior photothermal evaporation performance while at the same time they possess various functional groups (e.g., ‐NH 2 , ‐OH, ‐COOH, ‐CONH 2 , ‐SO 3 H) which can impart additional functions to the final system such as i) adsorption of contaminant species and ii) antiscaling properties (Figure 15). Indeed, the hydrogels have been shown to effectively remove a range of heavy metals via the adsorption process as we have discussed in Section 4.2.1.…”

Section: Hydrogel‐enabled Wtsmentioning

confidence: 99%

Polymeric Hydrogels—A Promising Platform in Enhancing Water Security for a Sustainable Future

Loo

Vásquez

Athanassiou

et al. 2021

Adv Materials Inter

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anthropogenic activities that have led to saline intrusion and contamination of the existing freshwater sources, making the current approaches for water treatment even more difficult and costly. [2][3][4] This, in combination with the continuously rising global water demand, results in a rather pessimistic prediction that an additional 2000 billion m 3 of freshwater supply will be required by 2030 to meet the global demand, assuming no gains on the current state of water-production capacity and efficiency. [5,6] As the existing freshwater sources are being depleted, there is a growing need for utilization of a broader range of water sources beyond the conventional ones, that is, brackish water, seawater, wastewater, and atmospheric moisture. [7] On top of that, there is a call for a greater focus on enhancing water security, particularly for the poor and vulnerable populations, as water scarcity is more critical in these geographical regions due to the lack of access to conventional infrastructure and power sources to produce clean water. [1,8,9] This, in addition to the increasing intensity and frequency of climate-related disasters, present unique demands, such as simple and off-grid operations, for water technologies (WTs) that can be deployed to manage the constraints imposed by these circumstances. [10]

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New hydrogel materials for improving solar water evaporation, desalination and wastewater treatment: A review

Cited by 173 publications

References 96 publications

Removal of Chromium(III) and Cadmium(II) Heavy Metal Ions from Aqueous Solutions Using Treated Date Seeds: An Eco-Friendly Method

Removal of Chromium(III) and Cadmium(II) Heavy Metal Ions from Aqueous Solutions Using Treated Date Seeds: An Eco-Friendly Method

A review on the potential of photocatalysis in combatting SARS-CoV-2 in wastewater

Polymeric Hydrogels—A Promising Platform in Enhancing Water Security for a Sustainable Future

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