The use of spent coffee grounds and spent green tea leaves for the removal of cationic dyes from aqueous solutions

Jóźwiak, Tomasz; Filipkowska, Urszula; Struk-Sokołowska, Joanna; Bryszewski, Kamil; Trzciński, Karol; Kuźma, Joanna; Ślimkowska, Monika

doi:10.1038/s41598-021-89095-6

Cited by 21 publications

(5 citation statements)

References 42 publications

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“…A similar effect of pH on the efficiency of BV10 sorption was noted in studies addressing the sorption of cationic dyes on aluminosilicates [ 30 ], fly ash and also soybean pomace [ 31 ]. In the case of BR46 sorption, a similar effect of pH was also obtained in the research on the decolorization of aqueous solutions on materials based on cyclodextrin [ 32 ], bentonite [ 33 ] and green tea leaves and coffee grounds [ 34 ].…”

Section: Resultssupporting

confidence: 56%

“…A similar time of BV10 sorption equilibrium was obtained in the research on the decolorization of water solutions on fly ash and soybean pomace (240 min) [ 31 ]. In the case of BR46, similar sorption equilibrium times were obtained during the research on the sorption of dyes on green tea leaves and coffee grounds (240 min) [ 34 ] as well as lemon peels (240 min) [ 36 ].…”

Section: Resultsmentioning

confidence: 58%

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The Use of Chitin from the Molts of Mealworm (Tenebrio molitor) for the Removal of Anionic and Cationic Dyes from Aqueous Solutions

et al. 2023

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The possibility of using chitin from the molts of an insect–ealworm (Tenebrio molitor) to remove anionic (RB5, RY84) and cationic dyes (BV10, BR46) from aqueous solutions was investigated. The scope of the research included, among others: Characteristics of chitin from mealworms (FTIR, SEM, pHPZC), the effect of pH on sorption efficiency, sorption kinetics (pseudo-first, pseudo-second order, intramolecular diffusion models) and the determination of the maximum sorption capacity (Langmuir and Freundlich models). The sorption efficiency of anionic dyes on chitin from mealworm was the highest at pH 2–3, and for cationic dyes at pH 6. The equilibrium time of sorption of anionic dyes was 240–300 min and for cationic dyes it was 180–240 min. The experimental data on dye sorption kinetics was best described by the pseudo-second order model. The maximum sorption capacity of chitin from the mealworm for the anionic dyes RB5 and RY84 was 121.15 mg/g and 138.55 mg/g, respectively, and was higher than with some carbon-based materials (literature data). In the case of cationic dyes, the sorption capacity of the tested chitin was lower and reached 3.22 mg/g and 59.56 mg/g for BV10 and BR46, respectively.

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Section: Resultssupporting

confidence: 56%

Section: Resultsmentioning

confidence: 58%

The Use of Chitin from the Molts of Mealworm (Tenebrio molitor) for the Removal of Anionic and Cationic Dyes from Aqueous Solutions

et al. 2023

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“…A very similar pH effect on BR46 sorption effectiveness was also noted in studies examining its removal on citrus fruit peels [80], coconut shells [81], and spent coffee leaves and grains [35].…”

Section: Effect Of Ph On the Effectiveness Of Dye Sorption On Np Lwc ...supporting

confidence: 64%

“…Ample studies have also been carried out on the removal of dyes using waste from the wood industry, such as sawdust [ 26 , 27 ], bark [ 28 , 29 ], cones [ 30 , 31 ], or tree leaves [ 32 , 33 ]. In some cases, scientists have reported that the sorption capacities of the tested plant sorbents were similar to those of some types of activated carbons [ 34 , 35 ]. The sorption capacity of plant biomass is owed mainly to its polysaccharides (cellulose, hemicellulose) and lignin.…”

Section: Introductionmentioning

confidence: 99%

The Use of Various Types of Waste Paper for the Removal of Anionic and Cationic Dyes from Aqueous Solutions

Jóźwiak,

Filipkowska,

Bednarowicz

et al. 2024

Molecules

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This study examined the possibility of using various types of waste paper—used newsprint (NP), used lightweight coated paper (LWC), used office paper (OP), and used corrugated cardboard (CC)—for the removal of anionic dyes, Acid Red 18 (AR18) and Acid Yellow 23 (AY23), and cationic dyes, Basic Violet 10 (BV10) and Basic Red 46 (BR46), from aqueous solutions. The scope of this research included the characterization of sorbents (FTIR, SEM, BET surface area, porosity, pHPZC, effectiveness of water coloration), determination of pH effect on the effectiveness of dye sorption, sorption kinetics (pseudo-first-order model, second-order model, intraparticular diffusion model), and the maximum sorption capacity (Langmuir models and Freundlich model) of the tested sorbents. The use of waste paper materials as sorbents was found to not pose any severe risk of aquatic environment contamination. AR18, AY23, and BV10 sorption intensities were the highest at pH 2, and that of RB46 at pH 6. The waste paper sorbents proved particularly effective in removing cationic dyes, like in the case of, e.g., NP, which had a sorption capacity that reached 38.87 mg/g and 90.82 mg/g towards BV10 and BR46, respectively, and were comparable with that of selected activated carbons (literature data).

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“…A very similar effect of pH on the BV10 sorption effectiveness, manifested by the highest intensity noted at pH = 3, has also been demonstrated in studies addressing the sorption properties of spent tea leaves [45], mealworm molts [46], and activated carbon from palm bark [47].…”

Section: The Effect Of Ph On the Effectiveness Of Dye Sorption Onto Rhsupporting

confidence: 60%

The Use of Rapeseed Husks to Remove Acidic and Basic Dyes from Aquatic Solutions

Jóźwiak,

Filipkowska

2024

Applied Sciences

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This study aimed to identify the possibility of using rapeseed husks (RH) as an unconventional sorbent for removing acidic (AR18, AY23) and basic (BR46, BV10) dyes from aqueous solutions. Its scope included, i.a.: sorbent characterization (FTIR, pHPZC), determination of pH effect on dye sorption effectiveness (pH 2–11), analysis of dye sorption kinetics (pseudo-first order model, pseudo-second order model, intraparticular diffusion model), and the determination of the maximum sorption capacity (Langmuir 1 and 2, and Freundlich isotherms). The sorption effectiveness of acidic dyes (AR18, AY23) onto RH was the highest at pH = 2, whereas that of the basic dyes BR46 and BV10 was most effective at pH = 6 and pH = 3, respectively. The time needed to reach the sorption equilibrium of dyes onto RH depended on their initial concentration and ranged from 120 to 150 min for the acidic dyes and from 150 to 180 min for the basic dyes. The maximum sorption capacity (Qmax) of RH towards AR18 and AY23 was 49.37 mg/g and 41.52 mg/g, respectively, and towards BR46 and BV10 it was 59.07 mg/g and 20.93 mg/g, respectively. The obtained Qmax values were compared with the results achieved for other sorbents (literature data). This comparison demonstrated that the sorption capacity of rapeseed husks towards the analyzed dyes was higher compared to that of some types of activated carbons.

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The use of spent coffee grounds and spent green tea leaves for the removal of cationic dyes from aqueous solutions

Cited by 21 publications

References 42 publications

The Use of Chitin from the Molts of Mealworm (Tenebrio molitor) for the Removal of Anionic and Cationic Dyes from Aqueous Solutions

The Use of Chitin from the Molts of Mealworm (Tenebrio molitor) for the Removal of Anionic and Cationic Dyes from Aqueous Solutions

The Use of Various Types of Waste Paper for the Removal of Anionic and Cationic Dyes from Aqueous Solutions

The Use of Rapeseed Husks to Remove Acidic and Basic Dyes from Aquatic Solutions

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