Development of nanohybrid adsorbent for defluoridation from aqueous systems

Dhongde, Vicky; Wasewar, Kailas L.; De, Biswajit S.

doi:10.1016/j.chemosphere.2017.08.153

Cited by 23 publications

(6 citation statements)

References 44 publications

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“…Akinyemi, & Msagati, 2018), organic matter-rich clay (Mobarak, Selim, Mohamed, & Seliem, 2018), have been used previously for defluoridation. Various rare metaloxides/hydroxides composites, such as Ca-Al-La (Xiang, Zhang, Zhang, Tang, & Wang, 2014), Zr-Al-Ca (Dhongde, Wasewar, & De, 2017), and metal with chitosan composites such as Fe-chitosan (Viswanathan & Meenakshi, 2008), Al-chitosan (Swain et al, 2009), Carboxylated chitosan modified ferromagnetic nano particles (Mohammadi et al, 2019), bionanomaterial scaffolds (Kumar, Paul, & Natraj, 2017), La +3 impregnated chitosan/β-cyclodextrin (Preethi & Meenakshi, 2018) have also been investigated as fluoride scavenging materials.…”

Section: Accepted Manuscriptmentioning

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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Section: Accepted Manuscriptmentioning

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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“…Commercial carboxylic acid recovery from an aqueous system is performed by several prevalent techniques, such as extractive distillation, azeotropic distillation, reverse osmosis, adsorption, ion exchange, and membrane separation process. [17][18][19][20][21][22] However, reactive extraction is proven to be a potential recovery/separation method for carboxylic acids like protocatechuic acid, [23,24] tartaric acid, [25] lactic acid, [26] levulinic acid, [27] caproic acid, [28,29] acrylic acid, [30] gallic acid, [31,32] phenylacetic acid, [33,34] itaconic acid, [35] nicotinic acid, [36][37][38] and propionic acid [39] by utilizing tri-n-butyl phosphate (TBP), alamine, tri-n-octyl phosphine oxide, trioctylamine (TOA), aliquat, etc. as extractants.…”

Section: Introductionmentioning

confidence: 99%

Experimental, equilibrium modelling, and column design for the reactive separation of biomass‐derived 2‐furoic acid

Dixit

Anand

et al. 2023

Can J Chem Eng

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Electrochemical conversion of biomass to value‐added chemicals has gained impetus in recent years. Herein, we present a methodology for recovering biomass‐derived 2‐furoic acid from the dilute aqueous stream by reactive extraction. The reactive extraction was performed using a chemical extractant, trioctylamine (TOA), with diluents (octanol, chloroform, and diethyl ether). Equilibrium parameters influencing the recovery of 2‐furoic acid were evaluated. Using TOA in various diluents, the 2‐furoic acid was recovered with 85%–99% efficiency. A 1:1 complex of the 2‐furoic acid—TOA was formed in the organic phase, and the experimental equilibrium complexation constant was compared with that obtained from the relative basicity and Langmuir models. The equilibrium parameters were used for column design to estimate the solvent to feed ratio (S/F) and the number of theoretical stages (NTS). The NTS required is 12 to attain 99% recovery of 2‐furoic acid in counter‐current extraction. The present study sheds light on the reactive extraction process adopted for process intensification with electrochemical conversion, paving the way for the commercialization of valuable products obtained from biomass.

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“…Several techniques have been employed for the separation of dilute acids from fermentation broth, namely, distillation, ultrafiltration and membrane separation, , ion exchange, adsorption, − electrodialysis, and extraction . Most of these methods have limitations such as being time-consuming and/or energy intensive, producing toxic byproducts, exhibiting low selectivity, and being less effective for dilute solutions.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Reactive Extraction of Malonic Acid with Validation by Fourier Transform Infrared Spectroscopy

Dhongde

Wasewar

2019

J. Chem. Eng. Data

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Malonic acid is an essential carboxylic acid that is used as a backbone reactant in deriving multiple higher-order carboxylic compounds. The successful attempt of producing malonic acid from a biological route has attracted the scientific community to extract malonic acid from a fermentation broth or dilute aqueous stream. Experimental study on the recovery of malonic acid by reactive extraction was performed, and the effects of TBP concentration, diluents (alkane, ketone, and alcohol), and malonic acid concentration were investigated. The equilibrium models (relative basicity and mass action law models) and the number of theoretical units (NTU) were also evaluated. Fourier transform infrared spectroscopy provided evidence for the formation of significant bonds among extractant–diluent–acid complexation systems which support the experimental outcomes. The results of extraction equilibrium are discussed regarding dimerization constant (D MA), partition coefficient (P MA), extraction efficiency (E MA%), distribution coefficient (K D(MA)), overall extraction complexation equilibrium (K E(MA)), and loading factor (Z MA). The highest reactive extraction efficiency was 73.5% with 0.5962 mol·kg–1 TBP used in MIBK. The distribution coefficient (K D(MA)) of malonic acid in various diluents exhibited the trend MIBK > octanol > heptane. The comparison between values predicted by the equilibrium model and experimental outcomes shows that the relative basicity models predicted better results than the mass action law for reactive extraction of malonic acid. The NTU was calculated to be 2, which was estimated by the modified Kremser equation for designing a countercurrent reactive extraction column.

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Development of nanohybrid adsorbent for defluoridation from aqueous systems

Cited by 23 publications

References 44 publications

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

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

Experimental, equilibrium modelling, and column design for the reactive separation of biomass‐derived 2‐furoic acid

Experimental Study on Reactive Extraction of Malonic Acid with Validation by Fourier Transform Infrared Spectroscopy

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