Sorbent based on citrus peel waste for wastewater treatment

Krstić, Vesna; Urošević, Tamara; Uđilanović, Marina; Ćirić, Andrija; Milić, Saša

doi:10.1016/b978-0-323-90912-9.00020-4

Cited by 3 publications

(4 citation statements)

References 66 publications

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“…These were stored in bulk in polythene bags for further use in experimental work. These are also characterized and evaluated by performing Boehm titration to find the adsorbent sites’ behavior (acidic or basic) [18], I 2 titration, moisture and ash content, elemental analysis, volatile matters, measurements of porosity and bulk density ratio, and pH of their raw forms [19–21] and are tabulated in Table 2. To measure the pH , 1 g of each PWM and PWC was placed in 40 mL of deionized water in 200-mL flasks separately and stirred for one hour continuously.…”

Section: Methodsmentioning

confidence: 99%

“…The change in enthalpy (ΔH 0 ) varied between 2.1 and 20.9 kJmol -1 , exhibiting physio-sorption, and from 80 to 200 kJmol -1 , exhibiting chemisorption [78]. Therefore, exothermic enthalpy changes calculated from Equation (18), for adsorptive eradication of CGR on citric acid-processed biosorbents CPWM is (-145 kJmol -1 ) and on unprocessed PWM is (-57 kJmol -1 ), whereas on CPWC is (-76 kJmol -1 ) and on its raw form is (-48 kJmol -1 ) indicating the chemisorption adsorption mechanism. The higher the ΔH 0 value for citric acid treated biosorbents in comparison to their raw peels reflecting the 14 Adsorption Science & Technology tighter adsorbate-adsorbent interactions at their surface interfaces, resulting in the efficient eradication of CGR from the water system.…”

Section: Adsorption Kinetic Investigationmentioning

confidence: 99%

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Eco-Friendly Detoxification of Congo Red Dye from Water by Citric Acid Activated Bioadsorbents Consisting of Watermelon and Water Chestnuts Peels Collected from Indigenous Resources

Hussain

Rehman

Imran

et al. 2022

Adsorption Science & Technology

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The native peels of two cheap, locally available adsorbents, watermelon (PWM) and water chestnuts (PWC), were chemically processed with different chemicals as modifying agents for the determination and assessment of their adsorption ability for the removal and clearance of harmful, venomous, and pernicious Congo red (CGR), as an acidic nature anionic dye, from the aqueous system. In successive batch experiments, the citric acid-treated peels CPWM and CPWC have shown more promising adsorption performance than their raw and untreated peel counterparts due to the availability of additional adsorption active binding sites evidenced through FT-IR and SEM characterizations. In the Langmuir and Temkin models, the correlation coefficients ( R 2 ) for the adsorptive removal of CGR on CPWM, PWM, CPWC, and PWC are very close to unity, 0.99 for each case of adsorption performance. Furthermore, the q max nonlinear statistical results for the elimination of CGR on citric acid-treated adsorbents (CPWM and CPWC) are 8.3 and 7.95 mg/g whereas for their unmodified forms (PWM and PWC) are 2.23 and 4.32 mg/g, respectively, reflecting homogenous and monolayer adsorption mechanism. The greater values of B T 1.4 and 1.3 J/mole, for adsorptive removal of dye on CPWM and CPWC, respectively, as compared to their unmodified forms PWM and PWC which are 0.53 and 0.55 J/mole, respectively, indicate the stronger adsorbate-adsorbent associations. The mechanism follows the pseudo second order in the better mode, while thermodynamic statics for ΔH0,ΔG0, ΔS0, and ΔE0, indicate spontaneous and exothermic behavior of adsorption. This study tends to suggest that citric acid-modified adsorbents CPWM and CPWC may indeed be exploited efficiently to eliminate Congo red dye from wastewater.

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Section: Methodsmentioning

confidence: 99%

Section: Adsorption Kinetic Investigationmentioning

confidence: 99%

Eco-Friendly Detoxification of Congo Red Dye from Water by Citric Acid Activated Bioadsorbents Consisting of Watermelon and Water Chestnuts Peels Collected from Indigenous Resources

Hussain

Rehman

Imran

et al. 2022

Adsorption Science & Technology

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show abstract

“…air and wastewater contamination) since air quality has straightforwardly impacted the respiratory functioning (Oiamo et al 2015) and wastewater pollution is an imperative demand for treatment. Increasing the value of waste is a global priority, not only increasing the value to waste but can also be used to solve environmental problems (Alfaro and Jones 2018; Krstic et al 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Several reports have appeared in recent years on the preparation of activated carbons from various different cheaper materials, such as agricultural byproducts and other biomass materials, waste polymer materials, etc. (Krstic et al 2022). This paper examines whether European beech charcoal can be expended to remove mercury contaminants from water.…”

Section: Introductionmentioning

confidence: 99%

Efficient mercury removal and neutralization of wastewater using European beech charcoal

Udjilanovic,

Krstic,

Ciric

2023

Preprint

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This investigation aimed to produce, characterize, and apply European beech (Fagus silvatica) charcoal for wastewater treatment. The results showed that beech charcoal has high thermal stability and carbon content. Elemental analysis results indicated that beech charcoal has a high potassium content. The surface of beech charcoal was rough. The morphology from scanning electron microscope (SEM) images demonstrated that beech charcoal is a highly porous material, with small cavities connected to large cavities. Beech charcoal was worked as an adsorbent for wastewater treatment from the Borska river. The results indicated that beech charcoal could efficiently remove mercury and neutralize the pH of wastewater in wastewater with high acidity and alkalinity.

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A comprehensive investigation of green solutions for sustainable wastewater remediation: A review

Hublikar,

Shilar,

Suliphuldevara Mathada

et al. 2024

Journal of Molecular Liquids

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Sorbent based on citrus peel waste for wastewater treatment

Cited by 3 publications

References 66 publications

Eco-Friendly Detoxification of Congo Red Dye from Water by Citric Acid Activated Bioadsorbents Consisting of Watermelon and Water Chestnuts Peels Collected from Indigenous Resources

Eco-Friendly Detoxification of Congo Red Dye from Water by Citric Acid Activated Bioadsorbents Consisting of Watermelon and Water Chestnuts Peels Collected from Indigenous Resources

Efficient mercury removal and neutralization of wastewater using European beech charcoal

A comprehensive investigation of green solutions for sustainable wastewater remediation: A review

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