Removal of sulfonated azo Reactive Red 195 textile dye from liquid phase using surface-modified lychee (Litchi chinensis) peels with quaternary ammonium groups: Adsorption performance, regeneration, and mechanism

Munagapati, Venkata Subbaiah; Wen, Hsin-Yu; Gollakota, Anjani R.K.; Wen, Jet‐Chau; Lin, Kun‐Yi Andrew; Shu, Chi‐Min; Reddy, Guda Mallikarjuna; Zyryanov, Grigory V.; Wen, Jhy-Horng; Tian, Zhenhua

doi:10.1016/j.molliq.2022.120657

Cited by 22 publications

(6 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The negative value of this parameter indicates that the adsorption process is exothermic. An exothermic nature was also observed in the adsorption of Reactive Red 141 dye by cotton-fiber-based AC 47 and the adsorption of Reactive Red 195 onto surface-modified lychee peels 48 . The value of change in entropy (∆S°) was 0.05 kJ/mol.…”

Section: Resultsmentioning

confidence: 75%

Production of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted KOH/NaOH mixture activation for dye adsorption

Aloud,

Alharbi,

Hameed

et al. 2023

Sci Rep

View full text Add to dashboard Cite

Date palm stones are regarded as possible alternatives to activated carbon (AC) precursors with high potential for various environmental applications. In this research study, date palm stones derived activated carbon (DPSAC) was used as adsorbent for removing toxic remazol brilliant blue R (RBBR). The synthesis of DPSAC involved a chemical treatment using KOH and NaOH (1:1). Characterization of DPSAC revealed that it exhibited a BET surface area of 715.30 m2/g, Langmuir surface area of 1061.93 m2/g, total pore volume of 0.39 cm3/g, and average pore diameter of 2.15 nm. Adsorption uptake of RBBR increased (from 24.54 to 248.54 mg/g), whereas the removal percentage decreased (from 98.16 to 82.85%) when the initial RBBR concentration increased (from 25 to 300 mg/L). The adsorption process performed best under acidic conditions (pH 3), with an RBBR uptake of 98.33 mg/g. Because of the high R2 values (0.9906 and 0.9779) and low average errors (6.24 and 13.95%), this adsorption process followed the Freundlich isotherm and pseudo-first-order (PFO) models, respectively. The Langmuir adsorption capacity (Qm) was 319.63 mg/g. Thermodynamic parameters were − 11.34 kJ/mol for ∆H° (exothermic in nature), 0.05 kJ/mol K for ∆S° (increasing randomness level at solid–liquid interface), − 27.37 kJ/mol for ∆G° (spontaneous), and 6.84 kJ/mol for Ea (controlled by physisorption).

show abstract

Section: Resultsmentioning

confidence: 75%

Production of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted KOH/NaOH mixture activation for dye adsorption

Aloud,

Alharbi,

Hameed

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Also, the mean energy of sorption values E were estimated as 353.55, 353.55, and 223.61 kJ/mol for AC/NH 4 Cl, BC/NH 4 Cl, and BC/LLCH, respectively, suggesting that they are chemisorption processes since their values were found to be less than 8 kJ/mol. Also, this implies that intraparticle diffusion predominated and that ion exchange influenced the adsorption processes [89][90][91].…”

Section: Results For Adsorption Isothermsmentioning

confidence: 99%

Nitrogen Removal from Landfill Leachate Using Biochar Derived from Wheat Straw

Igwegbe,

Kozłowski,

Wąsowicz

et al. 2024

Materials

View full text Add to dashboard Cite

Landfill leachate (LLCH) disposal poses challenges due to high pollutant concentrations. This study investigates the use of biochar (BC) derived from wheat straw for nitrogen content reduction. Laboratory experiments evaluated BC’s adsorption capacity (qm) for nitrogen removal from ammonium chloride solution (NH4Cl) and LLCH, along with testing isotherm models. The results demonstrated that BC was more efficient (95.08%) than commercial activated carbon AC (93.11%), the blank, in adsorbing nitrogen from NH4Cl. This superior performance of BC may be attributed to its higher carbon content (57.74%) observed through elemental analysis. Lower results for BC/LLCH may be due to LLCH’s complex chemical matrix. The Langmuir isotherm model best described BC/NH4Cl adsorption (qm = 0.5738 mg/g). The AC/NH4Cl data also fitted into the Langmuir (R2 ˃ 0.9) with a qm of 0.9469 mg/g, and 26.667 mg/g (R2 ˂ 0.9) was obtained for BC/LLCH; the BC/LLCH also gave higher qm (R2 ˃ 0.9) using the Jovanovich model (which also follows Langmuir’s assumptions). The mean energy of the adsorption values estimated for the AC/NH4Cl, BC/NH4Cl, and BC/LLCH processes were 353.55, 353.55, and 223.61 kJ/mol, respectively, suggesting that they are all chemisorption processes and ion exchange influenced their adsorption processes. The Freundlich constant (1/n) value suggests average adsorption for BC/LLCH. The BC/LLCH data followed the Harkins–Jura model (R2: 0.9992), suggesting multilayered adsorption (or mesopore filling). In conclusion, biochar derived from wheat straw shows promising potential for landfill leachate remediation, offering efficient nitrogen removal capabilities and demonstrating compatibility with various adsorption models. This research also lays the groundwork for further exploration of other biochar-based materials in addressing environmental challenges associated with landfill leachate contamination.

show abstract

“…As presented in Figure 1, the removal efficiency of Indigo Carmine by the Pinus patula BC decreased from 99.1% to 55.3% after seven adsorption-desorption cycles. The decrease in the removal efficiency of Indigo Carmine by Pinus patula BC with the increase in the number of adsorption-desorption cycles can be related to the remaining dye molecules that stay in the BC adsorption active sites, causing the saturation of the adsorbent and decreasing the availability of the adsorption active sites [33,34]. During the regeneration studies, it was observed that the amount of BC decreased as the number of cycles increased.…”

Section: Regeneration Studiesmentioning

confidence: 99%

A Study of the Feasibility of Pinus patula Biochar: The Regeneration of the Indigo Carmine-Loaded Biochar and Its Efficiency for Real Textile Wastewater Treatment

Gallego-Ramírez,

Chica,

Rubio-Clemente

2024

Processes

View full text Add to dashboard Cite

The feasibility of an adsorbent material like biochar (BC) depends on its regeneration capacity and its ability to achieve high removal efficiencies on real wastewater (WW) effluents. In this study, the regeneration capacity of the Pinus patula BC previously used in the removal of Indigo Carmine from water was evaluated. The regeneration technique that resulted in the highest desorption efficiency was a thermo-chemical method that consisted of heating the spent BC in a stove at 160 °C for 45 min followed by regeneration with ethanol (C2H6O) at a concentration of 75% for 6 h. Through this regeneration method, it was found that Pinus patula BC could be used in seven consecutive adsorption–desorption cycles. The feasibility of this BC was also assessed by evaluating the adsorbent’s efficiency in real textile WW. Under optimal operational conditions (solution pH = 3, BC dose = 13.5 g/L, and BC particle size = 300–450 µm), the highest removal efficiencies in terms of colour and dissolved organic carbon (DOC) were 81.3 and 76.8%, respectively, for 120 min of treatment. The results obtained in the regeneration studies and the treatment of real textile WW suggested that the use of Pinus patula BC could be suitable to be scaled to an industrial level, contributing to sustainable development and the circular bioeconomy by using a waste to solve the dye pollution problem of another waste.

show abstract

Removal of sulfonated azo Reactive Red 195 textile dye from liquid phase using surface-modified lychee (Litchi chinensis) peels with quaternary ammonium groups: Adsorption performance, regeneration, and mechanism

Cited by 22 publications

References 63 publications

Production of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted KOH/NaOH mixture activation for dye adsorption

Production of activated carbon from date palm stones by hydrothermal carbonization and microwave assisted KOH/NaOH mixture activation for dye adsorption

Nitrogen Removal from Landfill Leachate Using Biochar Derived from Wheat Straw

A Study of the Feasibility of Pinus patula Biochar: The Regeneration of the Indigo Carmine-Loaded Biochar and Its Efficiency for Real Textile Wastewater Treatment

Contact Info

Product

Resources

About