Occurrence and methods to remove arsenic and fluoride contamination in water

Bibi, Sadia; Kamran, Muhammad; Sultana, Jawairia; Farooqi, Abida

doi:10.1007/s10311-016-0590-2

Cited by 85 publications

(21 citation statements)

References 231 publications

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“…There are also other naturally occurring anions in As(V) and F − contaminated water, which may compete with both As(V) and F − for the adsorption sites. Herein, the effect of competitive anions such as Cl − , NO 3 − , SO 4 2− , CO 3 2− , and PO 4 3− on the adsorption of As(V) and F − was studied individually at pH 6.5 ± 0.2 and 25 °C with a molar ratio of 1 (As(V)): 1 (F − ): 1 (competitive anion).…”

Section: Resultsmentioning

confidence: 99%

“…groundwater, and mine water) and industrial wastewaters (e.g. effluents from electroplating plants) is found in many countries throughout the world . Groundwater with both As and F − was found in Argentina, China, India, Mexico, and Pakistan, most of which have been suffering environmental and health risks, since co‐exposure to As and F − even at very low concentrations has severely synergistic adverse consequences for animals and/or humans .…”

Section: Introductionmentioning

confidence: 99%

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Evaporation‐induced self‐assembly (EISA) synthesized mesoporous bimetallic oxides (MBOs) enabling enhanced co‐uptake of arsenate and fluoride from water

Jin

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND: Simultaneous removal of arsenic and fluoride anions from water by adsorption remains a challenge for environmental remediation practice. To address this issue, four mesoporous bimetallic oxides (MBOs) were prepared via the evaporation-induced self-assembly (EISA) method and studied as adsorbents for the co-uptake of arsenate (As(V)) and fluoride (F − ) from synthetic wastewater. Adsorption envelope and equilibrium experiments were performed to investigate the adsorption behaviors and properties.RESULTS: These composites possessed high surface areas (e.g. 200 m 2 g −1 for meso-Ti/Al) and well-defined mesopores, enabling high adsorption capacities for both As(V) and F − . The maximum adsorption capacities of mesoporous titanium-lanthanum oxide (meso-Ti/La) were as high as 81.42 mg g −1 and 44.37 mg g −1 for As(V) and F − , respectively. Surface complexation modeling indicates that As(V) removal mainly involved bidentate surface complexation with surface ≡Me-OH, while F − was retained by formation of monodentate surface complexes. CONCLUSION: The removal mechanisms were confirmed by X-ray photoelectron spectroscopy. These MBOs were found to be effective for simultaneous removal of arsenic and fluoride from water. This study also demonstrated that the incorporation of multi-components and mesoporosity into one composite is an efficient strategy for design and application of high-efficiency adsorbents for environmental remediation of aqueous contaminants.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaporation‐induced self‐assembly (EISA) synthesized mesoporous bimetallic oxides (MBOs) enabling enhanced co‐uptake of arsenate and fluoride from water

Jin

et al. 2018

J of Chemical Tech & Biotech

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“…This method is favorable when iron and manganese are present in addition to arsenic. Iron-and manganese-oxidizing bacteria are mainly utilized to convert As3+ to As5+ which is naturally present in groundwater (Bibi et al, 2017).…”

Section: Oxidation and Filtration Methodsmentioning

confidence: 99%

Arsenic contamination in India: Causes, effects and treatment methods

Tiwari¹,

Satwik²,

Khare³

et al. 2021

Int. J. Eng. Sci. Tech

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Herein the present study focuses on arsenic (As) contamination in groundwater, which plagues a vast section of the population of the world. Even the conservative estimates by the World Health Organization (WHO) estimate the number of people plagued by arsenic contaminated drinking water to be around 140-200 million. The Ganga- Brahmaputra fluvial plains in India and Padma-Meghna fluvial plains in Bangladesh are said to be one of the worst groundwater calamities to the humans. The Arsenic levels in drinking water in some of the most populated states in India are disproportionately higher than those defined by WHO guidelines. The paper, thus, delves into the anomaly in permissible limits defined by WHO and regional governments and its consequential effects. It briefly analyses the major sources of Arsenic contamination and its health effects in India. The study also looks closely into the states and districts plagued by the As contamination and explores the prominent treatment methods employed in as removal from the drinking water. Keywords: Arsenic, Adsorption, Geogenic, Arsenopyrite, Oxidation treatment

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“…Anthropogenic activities are a potential source of fluoride ions in the soil-water systems. Anthropogenic sources include brick kilns, mining, pesticides and fertilizers, tiles, ceramics, and flux in steel and glass utilized in aluminum manufacturing [10][11][12][13]. In drinking water, the permissible limit established for fluoride by the World Health Organization (WHO) and Bureau of Indian Standards (BIS) is 1.5 mg L −1 [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Bioaccumulation of Fluoride in Plants and Its Microbially Assisted Remediation: A Review of Biological Processes and Technological Performance

et al. 2021

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Fluoride is widely found in soil–water systems due to anthropogenic and geogenic activities that affect millions worldwide. Fluoride ingestion results in chronic and acute toxicity, including skeletal and dental fluorosis, neurological damage, and bone softening in humans. Therefore, this review paper summarizes biological processes for fluoride remediation, i.e., bioaccumulation in plants and microbially assisted systems. Bioremediation approaches for fluoride removal have recently gained prominence in removing fluoride ions. Plants are vulnerable to fluoride accumulation in soil, and their growth and development can be negatively affected, even with low fluoride content in the soil. The microbial bioremediation processes involve bioaccumulation, biotransformation, and biosorption. Bacterial, fungal, and algal biomass are ecologically efficient bioremediators. Most bioremediation techniques are laboratory-scale based on contaminated solutions; however, treatment of fluoride-contaminated wastewater at an industrial scale is yet to be investigated. Therefore, this review recommends the practical applicability and sustainability of microbial bioremediation of fluoride in different environments.

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Occurrence and methods to remove arsenic and fluoride contamination in water

Cited by 85 publications

References 231 publications

Evaporation‐induced self‐assembly (EISA) synthesized mesoporous bimetallic oxides (MBOs) enabling enhanced co‐uptake of arsenate and fluoride from water

Evaporation‐induced self‐assembly (EISA) synthesized mesoporous bimetallic oxides (MBOs) enabling enhanced co‐uptake of arsenate and fluoride from water

Arsenic contamination in India: Causes, effects and treatment methods

Bioaccumulation of Fluoride in Plants and Its Microbially Assisted Remediation: A Review of Biological Processes and Technological Performance

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