Adsorption of Pharmaceutical Pollutants Using Lignocellulosic Materials

Sharma, Atul

doi:10.1007/978-3-030-17724-9_12

Cited by 8 publications

(7 citation statements)

References 38 publications

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“…21,23 Therefore, optimizing the structure and properties of the material were the primary problems to improve the adsorption capacity. 24 In this paper, a novel biochar-based porous composite hydrogel (EDTA-BIOC hydrogel) using cheap and readily available biochar as the base was successfully prepared, which could effectively adsorb Cu(II) in wastewater. EDTA-BIOC hydrogel had a three-dimensional porous structure, which could provide many containment spaces for Cu(II) in wastewater, and the addition of EDTA increased the adsorption capacity of EDTA-BIOC hydrogel for Cu(II).…”

Section: Introductionmentioning

confidence: 99%

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Investigating the adsorption behavior of functional biochar-based porous composite for efficiently removing Cu(ii) in aqueous solution

Jin

et al. 2022

New J. Chem.

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Section: Introductionmentioning

confidence: 99%

“…21,23 Therefore, optimizing the structure and properties of the material were the primary problems to improve the adsorption capacity. 24…”

Section: Introductionmentioning

confidence: 99%

Investigating the adsorption behavior of functional biochar-based porous composite for efficiently removing Cu(ii) in aqueous solution

Jin

et al. 2022

New J. Chem.

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“…The adsorption behaviour and mechanisms of As(V) and As(III) on ferrihydrite have been widely performed with the help of batch adsorption experiments and spectroscopic techniques 20 , 21 , 28 – 31 . Many environmental factors, such as solution pH, background electrolyte concentration, adsorption temperature, competing cations/anions and different precipitated reaction media, have been also considered 29 , 31 – 33 . These results indicated that inner-sphere surface complexes formed by ligand exchange reactions were the predominant adsorption mechanisms of As(V), while As(III) forms both inner-sphere and outer-sphere surface complexes 28 , 30 .…”

Section: Introductionmentioning

confidence: 99%

“…As(V) and As(III) adsorption were pH-dependent: the adsorption amounts of As(V) decreased with the increases of solution pH, while those of As(III) exhibited the maximum adsorption capacity at pH 7‒9 20 , 29 . What’s more, the pore structure of ferrihydrite aggregates could be changed by the processes of freezing and thawing, which can further influence cation and anion adsorption onto ferrihydrite aggregates 32 , 33 . However, to our best knowledge, no studies have focused on the corresponding relation between removal efficiencies and surface morphology of ferrihydrite.…”

Section: Introductionmentioning

confidence: 99%

Arsenic removal performance and mechanism from water on iron hydroxide nanopetalines

Wang

Zhang

Guo

et al. 2022

Sci Rep

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Human health has been seriously endangered by arsenic pollution in drinking water. In this paper, iron hydroxide nanopetalines were synthesized through a precipitation method using KBH4 and their performance and mechanism of As(V) and As(III) removal were investigated. The prepared material was characterized by SEM–EDX, XRD, BET, zeta potential and FTIR analyses. Batch experiments indicated that the iron hydroxide nanopetalines exhibited more excellent performance for As(V) and As(III) removal than ferrihydrite. The adsorption processes were very fast in the first stage, followed a relatively slower adsorption rate and reached equilibria after 24 h, and the reaction could be fitted best by the pseudo-second order model, followed by the Elovich model. The adsorption isotherm data followed to the Freundlich model, and the maximal adsorption capacities of As(V) and As(III) calculated by the Langmuir model were 217.76 and 91.74 mg/g at pH 4.0, respectively, whereas these values were 187.84 and 147.06 mg/g at pH 8.0, respectively. Thermodynamic studies indicated that the adsorption process was endothermic and spontaneous. The removal efficiencies of As(V) and As(III) were significantly affected by the solution pH and presence of PO43– and citrate. The reusability experiments showed that more than 67% of the removal efficiency of As(V) could be easily recovered after four cycles. The SEM and XRD analyses indicated that the surface morphology and crystal structure before and after arsenic removal were stable. Based on the analyses of FTIR, XRD and XPS, the predominant adsorption mechanism was the formation of inner-sphere surface complexes by the surface hydroxyl exchange reactions of Fe–OH groups with arsenic species. This research provides a new strategy for the development of arsenic immobilization materials and the results confirm that iron hydroxide nanopetalines could be considered as a promising material for removing arsenic from As-contaminated water for their highly efficient performance and stability.

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“…In this context, the raw agricultural by-products have been widely studied as abundant, renewable, inexpensive, biodegradable and ecofriendly materials because of their adsorption ability for removal of organic and inorganic pollutants from contaminated effluents 18 . Great interest has been paid for the application of these lingo-cellulosic biomaterials (including wood sawdust, leaves, seeds, shell, peels, husks and straws) as alternative economic adsorbents to replace the conventional activated carbons 19,20 .…”

Section: Introductionmentioning

confidence: 99%

Removal of sodium salicylate from aqueous solution using spruce wood sawdust as an eco-friendly adsorbent

et al. 2020

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This study reports the application of Spruce wood sawdust as a low-cost and eco-friendly adsorbent for the removal of sodium salicylate from aqueous solutions. The effects of physicochemical parameters on the sodium salicylate adsorption process such as initial pH, temperature, solid/liquid ratio, initial concentration, contact time, and ionic strength were investigated. The optimum adsorption conditions were found as: equilibrium time = 3h, adsorbent dosage = 0.5 g/L, pH= 6.5, initial sodium salicylate concentration = 10 mg/L and temperature = 25°C. The kinetic study shows that the pseudo-second-order model is suitable to describe the adsorption process. The adsorption isotherm models (Langmuir, Freundlich, Temkin and generalized) were tested to understand the adsorption mechanism of sodium salicylate onto wood sawdust surface. The adsorption of sodium salicylate follows the Langmuir isotherm model. The maximum monolayer uptake capacity was found to be 99.01 mg/g. In addition, the temperature seems to have no noticeable effect on the adsorption of sodium salicylate. Finally, the thermodynamic parameters indicate that the adsorption is spontaneous (ΔG°˂ 0) and exothermic (ΔH°=-5.081 kJ/mol) in nature. Overall, Spruce wood sawdust can be used as a cost-effective and eco-friendly adsorbent for wastewater treatment applications.

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Adsorption of Pharmaceutical Pollutants Using Lignocellulosic Materials

Cited by 8 publications

References 38 publications

Investigating the adsorption behavior of functional biochar-based porous composite for efficiently removing Cu(ii) in aqueous solution

Investigating the adsorption behavior of functional biochar-based porous composite for efficiently removing Cu(ii) in aqueous solution

Arsenic removal performance and mechanism from water on iron hydroxide nanopetalines

Removal of sodium salicylate from aqueous solution using spruce wood sawdust as an eco-friendly adsorbent

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