Reduction of Crystal Violet Dye from Water by Pomegranate Peel–Derived Efficient Biochar: Influencing Factors and Adsorption Behaviour

Rouahna, Noureddine; Salem, Dhirar Ben; Bouchareb, I.; Nouioua, Asma; Ouakouak, Abdelkader; Fadel, Ammar; Hamdi, Noureddine; Boopathy, Raj

doi:10.1007/s11270-023-06338-0

Cited by 9 publications

(3 citation statements)

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“…33 The peak at 2360 cm −1 could be related to carbon dioxide (CO 2 ) in the air, 42–44 or carbon–oxygen groups, CO. 2 Moreover, this last peak also appeared at 1800 cm −1 due to the functional group in carboxylic acids, anhydrides, ketones and esters. 29 Some peaks (small and sharp) were observed for SP between 1600–1000 cm −1 , assigned to the CC aromatic ring stretching vibration (1560 cm −1 ), 9,45 the ionic carboxylic groups –COO − (1420 cm −1 ), 14,33,46 C–O stretching (1260–1050 cm −1 ) 9 and C–O–C groups. 6 In the SPAC spectrum, two peaks at 1430 and 1110 cm −1 were attributed to (–COO − ) and C–N aliphatic amines, 37 respectively.…”

Section: Resultsmentioning

confidence: 99%

Characterization of activated carbon produced from the green algae Spirogyra used as a cost-effective adsorbent for enhanced removal of copper(ii): application in industrial wastewater treatment

Djezzar,

Aidi,

Rehali

et al. 2024

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Characterization of activated carbon produced from the green algae Spirogyra used as a cost-effective adsorbent for enhanced removal of copper(ii): application in industrial wastewater treatment

Djezzar,

Aidi,

Rehali

et al. 2024

RSC Adv.

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“…Figure 4 depicts the SEM micrograph of B-700 and HB-700, revealing a heterogeneous structure with tunnel-shaped pores in the analyzed samples. Both samples exhibit notable porosity, which arises from the pyrolysis-induced degradation of lignin and cellulose within the biochar structure [ 21 ]. This development holds the potential to render the subjected adsorbents highly effective for the removal of CV molecules from water media.…”

Section: Resultsmentioning

confidence: 99%

Production of biochar from Melia azedarach seeds for the crystal violet dye removal from water: combining of hydrothermal carbonization and pyrolysis

et al. 2023

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Biochar has shown large potential in water treatment because of its low cost, good textural properties, and high reusability. In this study, two porous biochars were developed from the Melia azedarach seeds via direct pyrolysis process (B-700) and through hydrothermal carbonization followed with pyrolysis (HB-700). They were characterized by morphology, structural characteristics, and surface features and used to adsorb the crystal violet (CV) dye in water environment. Results of the isotherm approaches demonstrated that the removal capacity of these biochars reached 119.4 mg/g for B-700, and 209 mg/g for HB-700 (at 45°C). Also, the Avrami model best fitted the kinetic data. The electrostatic attraction was regarded as one of the adsorptions mechanisms of CV dye. The regeneration tests reveal that both B-700 and HB-700 are good reusable adsorbents. Finally, findings of the study showed that the hydrothermal carbonization method that precede the pyrolysis process can improve significantly the adsorption capacity of the produced biochar.

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“…A wellknown agricultural waste is pomegranate peels, the annual global amount of which is approximately 1.62 million tons [42]; thus, it is considered a potential source to produce biochar. So far, pomegranate peel has been studied as a potential source to produce biochar with a high heating value (23.5 MJ/kg) [43], and to be used as an adsorbent material for crystal violet dye [44]. Only recently, Chen et al [26] used biochar from pomegranate husk that was pyrolyzed at 500 • C, modified with KOH, ZnCl 2 , and KHCO 3 , and continuously pyrolyzed again at 800 • C for peroxymonosulfate (PMS) activation for sulfamethoxazole (SMX) degradation.…”

Section: Introductionmentioning

confidence: 99%

Persulfate Activation Using Biochar from Pomegranate Peel for the Degradation of Antihypertensive Losartan in Water: The Effects of Pyrolysis Temperature, Operational Parameters, and a Continuous Flow Reactor

Ioannidi,

Frigana,

Vakros

et al. 2024

Catalysts

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Biochar derived from pomegranate peel at different pyrolysis temperatures (450, 600, and 850 °C) was synthesized and characterized by BET, XRD, FTIR, and SEM-EDX. Its catalytic efficiency in the degradation of the antihypertensive losartan (LOS) in the presence of sodium persulfate was examined. The biochar pyrolyzed at 850 °C exhibited higher catalytic activity, which was correlated with the greater surface area and higher concentration of minerals on its surface. Interestingly, despite adsorption being favored at alkaline pH, pH 3 showed the highest LOS degradation. LOS decomposition followed pseudo-first-order kinetics. The addition of persulfate significantly increased LOS reduction, while the presence of inorganic and organic water matrix constituents such as sodium chloride, bicarbonate, and humic acid inhibited the oxidation. Experiments conducted with radical scavengers revealed that both hydroxyl and sulfate radicals, as well as singlet oxygen, participated in LOS decomposition, with the former being the dominant species. Using a continuous flow reactor, the system exhibited a satisfactory steady-state performance of 90% LOS removal for 114 h. Afterward, a moderate decrease in performance was observed, which can be attributed to the alteration of the catalyst’s surface and mineral dissolution due to acidity.

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Reduction of Crystal Violet Dye from Water by Pomegranate Peel–Derived Efficient Biochar: Influencing Factors and Adsorption Behaviour

Cited by 9 publications

References 50 publications

Characterization of activated carbon produced from the green algae Spirogyra used as a cost-effective adsorbent for enhanced removal of copper(ii): application in industrial wastewater treatment

Characterization of activated carbon produced from the green algae Spirogyra used as a cost-effective adsorbent for enhanced removal of copper(ii): application in industrial wastewater treatment

Production of biochar from Melia azedarach seeds for the crystal violet dye removal from water: combining of hydrothermal carbonization and pyrolysis

Persulfate Activation Using Biochar from Pomegranate Peel for the Degradation of Antihypertensive Losartan in Water: The Effects of Pyrolysis Temperature, Operational Parameters, and a Continuous Flow Reactor

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