Removal of basic green 5 by carbonaceous adsorbent: Adsorption kinetics

Alam, Sultan; Rehman, Noor; Amin, Noha H.; Shah, Luqman Ali; Mian, Inamullah

doi:10.4314/bcse.v31i3.5

Cited by 10 publications

(7 citation statements)

References 25 publications

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“…From the spectra of crude Eucalyptus lenceoleta and extractive free straw it is confirmed that lignin is present in these samples due to the absorption at 1514 and 1604 cm -1 . The (C-O) group stretching bands were observed at 1150, 1172 and 1188 cm -1 [26,27].…”

Section: Ft-ir Analysismentioning

confidence: 99%

Environmental friendly method for the extraction of cellulose from Triflolium resopinatum and its characterization

Rehman¹,

Alam²,

Mian³

2019

Bull. Chem. Soc. Eth.

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The leaves of Triflolium resopinatum were collected from the mountains of Malakand division, Khyber Pukhtoonkhwa, Pakistan and was grinded into smaller particles and converted into powder. The ground biomass was treated with different solvents in the Soxhlet apparatus for the removal of soluble extractive like pectin, cutin and wax substances. For bond breaking the alkaline substance was kept in the autoclave. Ethylene diamine tetra-acetate (EDTA) and hydrogen peroxide (H2O2) were used for the removal of most polar substances like pectin, cutin, waxes and other extractives. Furthermore, raw cellulose was purified through acetic acid and nitric acid. Double distilled water was used for the neutralization of pH. The analysis of purified cellulose was carried out through different procedures such as X-ray Diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The extracted cellulose has high degree of purity and crystallinity (72%) and thermal stability indicating that the process for the extraction of cellulose is quite adequate.

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Section: Ft-ir Analysismentioning

confidence: 99%

Environmental friendly method for the extraction of cellulose from Triflolium resopinatum and its characterization

Rehman¹,

Alam²,

Mian³

2019

Bull. Chem. Soc. Eth.

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“…In short basic dyes are considered one of the more challenging classes of dyes which are considered toxic colourants. As a consequence, enhanced and cost-effective technologies are required to remove them from textile effluents [13,14].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Biomass (Eucalyptus Lanceolata) as an Adsorbent - Removal of Methylene Blue from Wastewater

et al. 2022

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Abstract. Investigation relevant to the influence of activated carbon (AC) supports biomass of Eucalyptus Lanceolata as an adsorbent was not reported previously. The recent work synthesized a series of studies to know various experimental parameters equilibration time and temperature of the adsorbent for the elimination of dye. Physical structure characterization measured that the surface area of activated carbon increased from 399 to 475 m2.g-1 revealed that the raw biomass had more compact surface than those of activated carbon. FTIR bands were found in the region between 3406.29 cm-1 and 3414.0 cm-1 indicates (-OH) stretching group which leads to hydrogen bonding. Adsorption of Methylene blue was studied on raw and activated carbon. The average activation energy of the activated carbon was 33.67 kJ.mol-1, slightly lower than those of raw carbon, which was 49.14 kJ.mol-1. Intraparticle diffusion, Elovich and Bhangam models were applied to evaluate kinetics studies at 20, 30 and 40 ºC. Thermodynamic parameters, ΔH≠, ΔS≠ and ΔE≠ were calculated from the adsorption of kinetics. Results indicate that adsorption is a spontaneous process. The negative value of entropy determined that the acid molecules take an oriented position on the surface of the adsorbent. The results show that all the models were best fitted for adsorption. Resumen. Una investigación relevante y no reportada previamente respecto a la influencia del carbón activado (CA) apoya que la biomasa de Eucalyptus Lanceolata es un adsorbente. El reciente trabajo sintetizó una serie de estudios para conocer diversos parámetros experimentales de tiempo de equilibrio y temperatura del adsorbente para la eliminación del colorante. La caracterización de la estructura física determinó que el aumento del área superficial del carbón activado de 399 a 475 m2.g-1 revela que la biomasa cruda tenía una superficie más compacta que las del carbón activado. Se encontraron bandas FTIR en la región entre 3406.29 cm-1 y 3414.0 cm-1 indicando el estiramiento del grupo (-OH) que conduce al enlace de hidrógeno. Se estudió la adsorción de azul de metileno en carbón crudo y activado. La energía de activación media del carbón activado fue de 33,67 kJ.mol-1, ligeramente inferior a la del carbón bruto, que fue de 49,14 kJ.mol-1. Se aplicaron modelos de difusión intrapartícula, Elovich y Bhangam para evaluar estudios cinéticos a 20, 30 y 40 ºC. Los parámetros termodinámicos, ΔH≠, ΔS≠ y ΔE≠ se calcularon a partir de la cinética de adsorción. Los resultados indican que la adsorción es un proceso espontáneo. El valor negativo de la entropía determinó que las moléculas de ácido toman una posición orientada en la superficie del adsorbente. Los resultados muestran que todos los modelos se ajustaron mejor para la adsorción.

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“…Although several studies have been reported on the polymeric composite adsorbents for separating the dyes from the wastewater, doping of any of the adsorbent material in a polymeric matrix followed by carbonization and activation makes polymeric composite adsorbents [29][30][31]. At this stage, there is still a need of more investigations on polymeric composite adsorbents on dye removal to make this process more effective and commercial.…”

Section: Introductionmentioning

confidence: 99%

Comparative and Equilibrium Studies on Anionic and Cationic Dyes Removal by Nano-Alumina-Doped Catechol Formaldehyde Composite

Viswanathan¹,

Selvakumar

Sivarajasekar³

et al. 2020

Journal of Chemistry

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Nano-alumina-doped catechol formaldehyde polymeric composite was prepared, characterized, and applied as an adsorbent for the removal of an anionic dye Congo red (CR) and a cationic dye SafraninO (SF), by adsorption process especially from aqueous solutions. Characterizations such as particle size distribution, zeta potential, BET, FTIR, and FESEM-EDAX were carried out for the adsorbent prepared. All experiments were conducted at the batch condition to study the effects of initial dye concentration (CR: 30–90 mg/L and SF: 10–50 mg/L), pH (2–11), temperature (25–55°C), and adsorbent dosage (0.05–0.3 g) on dye removal. The isotherm models (Langmuir, Freundlich, and Temkin) were analyzed for this adsorption work. The kinetic data obtained were analyzed by the pseudo-first-order, pseudo-second-order, Bangham, and Chien–Clayton equations. Dyes adsorption data were well fitted with the Freundlich isotherm equilibrium model and the pseudo-second-order kinetic model. Study results suggested that the nano-alumina-polymeric composite could be an effective adsorbent for anionic dye rather than cationic dye.

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Removal of basic green 5 by carbonaceous adsorbent: Adsorption kinetics

Cited by 10 publications

References 25 publications

Environmental friendly method for the extraction of cellulose from Triflolium resopinatum and its characterization

Environmental friendly method for the extraction of cellulose from Triflolium resopinatum and its characterization

Utilization of Biomass (Eucalyptus Lanceolata) as an Adsorbent - Removal of Methylene Blue from Wastewater

Comparative and Equilibrium Studies on Anionic and Cationic Dyes Removal by Nano-Alumina-Doped Catechol Formaldehyde Composite

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