Nanocomposite-based high-performance adsorptive water filters: recent advances, limitations, nanotoxicity and environmental implications

Kamath, Smitha V.; Mruthunjayappa, Manohara Halanur; Mondal, Dibyendu; Kotrappanavar, Nataraj Sanna

doi:10.1039/d2en00155a

Cited by 11 publications

(3 citation statements)

References 149 publications

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“…Therefore, the use of nanoranged materials has gained much attention in recent years owing to their high specific surface area and reactivity. 14,15 However, finding a sustainable way of using such nanoadsorbents in purification device is still underway and quite challenging due to the danger of leaching of nanoparticles into the solution and a highpressure drop. 15−17 In addition, these materials are not cost-effective and require a large amount of energy, chemicals, and skilled labor to prepare them.…”

Section: Introductionmentioning

confidence: 99%

“…Adsorbents such as amorphous aluminum oxide, activated alumina, hydrous iron oxide, aluminum oxide, titanium oxide, manganese oxide, and biochar have been well studied; − however, their low surface area and limited arsenic removal capacity limit their direct use without any modification. Therefore, the use of nanoranged materials has gained much attention in recent years owing to their high specific surface area and reactivity. , However, finding a sustainable way of using such nanoadsorbents in purification device is still underway and quite challenging due to the danger of leaching of nanoparticles into the solution and a high-pressure drop. − In addition, these materials are not cost-effective and require a large amount of energy, chemicals, and skilled labor to prepare them.…”

Section: Introductionmentioning

confidence: 99%

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A Simplified and Affordable Arsenic Filter to Prevent Arsenic Poisoning: Lab-Scale Study and Pilot Experiment

Panda,

Jha,

Kumar

et al. 2023

ACS EST Water

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Access to clean and potable water is an inextricable fundamental human right. However, the contamination of groundwater with toxic arsenic has emerged as one of the global issues that is preventing millions of people from accessing their fundamental rights and healthy livelihood. Over the years, progressive effort has been made to eradicate this problem, but there are significant challenges that still remain to be addressed. Keeping the research gaps in mind, our team has developed a simplified and affordable arsenic filter (SAAF) to prevent arsenic poisoning, which has been successfully implemented in the field in the last two years (Jharkhand, India). The filtering media used in the system consist of globally available and naturally occurring iron ore fines and manganese ore as arsenic removal agents along with silverimpregnated charcoal. The developed purifier SAAF is a household gravity-based water filter that can deliver potable water at a flow rate of 10−12 L/h from highly arseniccontaminated (1−1.5 mg L −1 ) and iron-contaminated (8−10 mg L −1 ) groundwater. The low cost, simplified design, adoptable setup, promising arsenic and iron removal performance, and extended lifespan (4−5 years) of the filter demonstrate its commercial possibility and implementation potential as a front-line arsenic removal technology.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Simplified and Affordable Arsenic Filter to Prevent Arsenic Poisoning: Lab-Scale Study and Pilot Experiment

Panda,

Jha,

Kumar

et al. 2023

ACS EST Water

View full text Add to dashboard Cite

show abstract

“…Also, they are not suitable for removing contaminants at extremely low concentrations (in the range of parts per billion). Therefore, the development of innovative recyclable multifunctional nanocomposites using sustainable and cost-effective synthesis techniques has gained considerable attention from the research community in both academia and industry [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of novel, cost-effective graphitic carbon nitride/Fe coated textile nanocomposites for effective degradation of dyes and biohazards

Ashraf,

Hussain,

Aziz

et al. 2023

Heliyon

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High‐performance quaternized hollow fiber membrane with sponge pore structure for fast adsorbing dichloroacetic acid from water by flow‐through adsorption

Guo

Chen

Chang-hu

et al. 2023

J of Applied Polymer Sci

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Dichloroacetic acid (DCAA), one of the disinfection by-products in water, has showed critical harm to human health since it can cause cancer, teratogen and mutagen. Herein, a quaternized hollow fiber membrane was fabricated by ring-open reaction via a facile one-step immersion method, which could fast adsorb DCAA by flow-through adsorption. The obtained membrane with a sponge pore structure, which was quaternized at 60 C in an alkaline solution, exhibited excellent adsorption performance with removal percentage of 100%, life span up to 100 L and treating capacity of 24.8 mg m À2 . Meanwhile, the optimal membrane exhibited the exceptional performance in a neutral test solution compared with acid or alkaline test solution. It was concluded that electrostatic attraction between positively charged quaternary ammonium groups and negatively charged DCAA was responsible for the adsorption mechanism. Additionally, fitting results indicated that the adsorption of DCAA onto the membrane was mainly dominated by homogeneous monolayer adsorption. This work developed a facile approach to prepare a novel quaternized membrane with outstanding adsorption performance, which demonstrated huge potentials in the molecular separation and water purification fields.

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Nanocomposite-based high-performance adsorptive water filters: recent advances, limitations, nanotoxicity and environmental implications

Abstract: Increase in global population and rapid industrialization is known to deteriorate the water quality that cause severe water scarcity worldwide. In recent years, high performance multifunctional nanomaterials with high specific...

Cited by 11 publications

References 149 publications

A Simplified and Affordable Arsenic Filter to Prevent Arsenic Poisoning: Lab-Scale Study and Pilot Experiment

A Simplified and Affordable Arsenic Filter to Prevent Arsenic Poisoning: Lab-Scale Study and Pilot Experiment

Fabrication and characterization of novel, cost-effective graphitic carbon nitride/Fe coated textile nanocomposites for effective degradation of dyes and biohazards

High‐performance quaternized hollow fiber membrane with sponge pore structure for fast adsorbing dichloroacetic acid from water by flow‐through adsorption

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