Synthesis of iron oxyhydroxide nanoparticles and its application for fluoride removal from water

Chaudhary, Mohit; Bhattacharya, Pathikrit; Maiti, Abhijit

doi:10.1016/j.jece.2016.05.018

Cited by 23 publications

(4 citation statements)

References 60 publications

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“…Huang et al [165] observed that the maximum adsorption capacity by using protonated crosslinked chitosan particles was at pH 7. Moreover, a decrease below pH 7 and above was also observed on iron oxyhydroxide nanoparticles [176]. In acidic conditions, the decrease in adsorption capacity was caused by weak hydrofluoric acid.…”

Section: Effects Of Ph On Fluoride Removalmentioning

confidence: 83%

A Comparative Study on Removal of Hazardous Anions from Water by Adsorption: A Review

John

David

Mmereki

2018

International Journal of Chemical Engineering

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This paper presents a comparative review of arsenite (As(III)), arsenate (As(V)), and fluoride (F − ) for a better understanding of the conditions and factors during their adsorption with focus on (i) the isotherm adsorption models, (ii) effects of pH, (iii) effects of ionic strength, and (iv) effects of coexisting substances such as anions, cations, and natural organics matter. It provides an indepth analysis of various methods of arsenite (As(III)), arsenate (As(V)), and fluoride (F − ) removal by adsorption and the anions' characteristics during the adsorption process. The surface area of the adsorbents does not contribute to the adsorption capacity of these anions but rather a combination of other physical and chemical properties. The adsorption capacity for the anions depends on the combination of all the factors: pH, ionic strength, coexisting substances, pore volume and particles size, surface modification, pretreatment of the adsorbents, and so forth. Extreme higher adsorption capacity can be obtained by the modification of the adsorbents. In general, pH has a greater influence on adsorption capacity at large, since it affects the ionic strength, coexisting anions such as bicarbonate, sulfate, and silica, the surface charges of the adsorbents, and the ionic species which can be present in the solution.

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Section: Effects Of Ph On Fluoride Removalmentioning

confidence: 83%

A Comparative Study on Removal of Hazardous Anions from Water by Adsorption: A Review

John

David

Mmereki

2018

International Journal of Chemical Engineering

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“…The pHzpc of Fe-Al-Mn@chitosan composite adsorbent was investigated using potentiometric titration method (Chaudhary et al, 2016).…”

Section: Characterizationmentioning

confidence: 99%

“…Excess fluoride may cause adverse effects such as a change in the level of thyroid, growth retardation, osteosclerosis, skeletal and dental fluorosis (Biswas, Kumari, Adhikari, & Dutta, 2017). Numerous technologies such as adsorption (Chaudhary, Maiti, & Bhattacharya, 2016;Nagaraj, Sadasivuni, & Rajan, 2017;Raghav & Kumar, 2019), coagulation (Gong, Qua, Liu, & Lan, 2012), electrocoagulation (Hua, Loa, & Kuan, 2003), precipitation (Chaudhary, & Maiti, 2019) and membrane separations (Sehn, 2008) have been used to reduce the fluoride concentration in water. Among all technologies, adsorption has been proven to be the most favourable process for defluoridation.Due to abundance and cost-effectiveness of clay materials, various types of clays such as laterite (Iriel, Bruneel, Schenone, & Cirelli, 2018), modified laterite (Maiti, Basu, & De, 2011), bauxite (Cherukumilli, Maurer, Hohman, Mehta, & Gadgil, 2018), bentonite clay (Mudzielwana, Gitari,…”

Section: Introductionmentioning

confidence: 99%

Chitosan-Fe-Al-Mn metal oxyhydroxides composite as highly efficient fluoride scavenger for aqueous medium

Chaudhary

Rawat

Jain

et al. 2019

Carbohydrate Polymers

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“…Some nanoscale materials have been used in different science fields, such as in energy they improve the surface reactivity of active sites [ 23 ]. Particularly in the environmental field, the nanoparticles highly improve the adsorption efficiency of pollutants due to the high specific surface area [ 24 ]. However, the major concern of using nanoparticles is the rapidly aggregation effect which can be avoided by supporting them onto templates [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Fe3+/Mn2+ (Oxy)Hydroxide Nanoparticles Loaded onto Muscovite/Zeolite Composites (Powder, Pellets and Monoliths): Phosphate Carriers from Urban Wastewater to Soil

et al. 2022

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The development of an efficient adsorbent is required in tertiary wastewater treatment stages to reduce the phosphate–phosphorous content within regulatory levels (1 mg L−1 total phosphorous). In this study, a natural muscovite was used for the preparation of muscovite/zeolite composites and the incorporation of Fe3+/Mn2+ (oxy)hydroxide nanoparticles for the recovery of phosphate from synthetic wastewater. The raw muscovite MC and the obtained muscovite/sodalite composite LMC were used in the powder form for the phosphate adsorption in batch mode. A muscovite/analcime composite was obtained in the pellets PLMCT3 and monolith SLMCT2 forms for the evaluation in fixed-bed mode for continuous operation. The effect of pH, equilibrium and kinetic parameters on phosphate adsorption and its further reuse in sorption–desorption cycles were determined. The characterization of the adsorbents determined the Fe3+ and Mn2+ incorporation into the muscovite/zeolite composite’s structure followed the occupancy of the extra-framework octahedral and in the framework tetrahedral sites, precipitation and inner sphere complexation. The adsorbents used in this study (MC, LMC, PLMCT3 and SLMCT2) were effective for the phosphate recovery without pH adjustment requirements for real treated wastewater. Physical (e.g., electrostatic attraction) and chemical (complexation reactions) adsorption occurred between the protonated Fe3+/Mn2+ (oxy)hydroxy groups and phosphate anions. Higher ratios of adsorption capacities were obtained by powder materials (MC and LMC) than the pellets and monoliths forms (PLMCT3 and SLMCT2). The equilibrium adsorption of phosphate was reached within 30 min for powder forms (MC and LMC) and 150 min for pellets and monoliths forms (PLMCT3 and SLMCT2); because the phosphate adsorption was governed by the diffusion through the internal pores. The adsorbents used in this study can be applied for phosphate recovery from wastewater treatment plants in batch or fixed-bed mode with limited reusability. However, they have the edge of environmentally friendly final disposal being promissory materials for soil amendment applications.

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Synthesis of iron oxyhydroxide nanoparticles and its application for fluoride removal from water

Cited by 23 publications

References 60 publications

A Comparative Study on Removal of Hazardous Anions from Water by Adsorption: A Review

A Comparative Study on Removal of Hazardous Anions from Water by Adsorption: A Review

Chitosan-Fe-Al-Mn metal oxyhydroxides composite as highly efficient fluoride scavenger for aqueous medium

Fe3+/Mn2+ (Oxy)Hydroxide Nanoparticles Loaded onto Muscovite/Zeolite Composites (Powder, Pellets and Monoliths): Phosphate Carriers from Urban Wastewater to Soil

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