Comparative studies on adsorptive removal of indole by granular activated carbon and bagasse fly ash

Hiwarkar, Ajay Devidas; Srivastava, Vimal Chandra; Mall, Indra Deo

doi:10.1002/ep.12025

Cited by 14 publications

(3 citation statements)

References 54 publications

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“…It is widely used in many industries such as perfumeries, pharmaceuticals, cosmetics, agrochemicals, pesticides, and dyestuffs for various applications. Indole is one of the most toxic and nitrogenous heterocyclic compounds considered as environmental pollutants (e. g., carcinogenic chlorinated aromatic products) [16] …”

Section: Introductionmentioning

confidence: 99%

Deep Denitrogenation of Model Diesel Fuel Using Ni‐doped Mesoporous Carbon: Synthesis Route and Adsorption Study

Delkhosh

Vahid²,

Baniyaghoob

et al. 2021

ChemistrySelect

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Nickel‐doped mesoporous carbon (MC) materials with 1, 4, and 7 wt. % nickel/MC, were synthesized and utilized for the elimination of indole, as representative of nitrogen‐containing compounds, from a model diesel fuel. Different instrumental techniques, including Fourier‐transform infrared (FT‐IR) spectroscopy, X‐Ray diffraction (XRD), N2 adsorption‐desorption analyses, field emission scanning electron microscopy (FE‐SEM), energy‐dispersive X‐ray spectroscopy (EDXS), and transmission electron microscopy (TEM) were used to characterize the synthesized Ni‐doped mesoporous carbons. The XRD and N2 adsorption‐desorption results revealed that all the nickel‐modified materials had ordered hexagonal mesostructures. Response surface methodology coupled with a three‐variable, three‐level Box‐Behnken design (BBD) involving three center points and one response was employed for evaluating the influence of the three input parameters, namely temperature (A), contact time (B), and Ni content (C) on the adsorption yield. The optimum removal efficiency (96.5 %) was obtained at 42 °C, 1 wt. % of Ni loading, and 55 min contact time; also, possible adsorption mechanisms might be due to van der Waals interaction, H‐bonding, and π‐complexation. Additionally, the equilibrium data were analyzed using Langmuir, Freundlich, and Temkin isotherm models, and the Freundlich isotherm model showed a better fit to experimental data (R2 =0.9978).

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Section: Introductionmentioning

confidence: 99%

Deep Denitrogenation of Model Diesel Fuel Using Ni‐doped Mesoporous Carbon: Synthesis Route and Adsorption Study

Delkhosh

Vahid²,

Baniyaghoob

et al. 2021

ChemistrySelect

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“…Due to the acute effect caused by benzene, the benzene removal from the various water bodies is utmost needed to ensure the safety of the environment. Among the available technologies, adsorption offers several advantages such as simple design and operation, lower energy requirement and cheaper operating costs . Activated carbon has been the most widely employed adsorbent for benzene removal process due its high specific surface area and stability .…”

Section: Introductionmentioning

confidence: 99%

Cetyltrimethylammonium bromide‐coated agrosorbents and their high benzene adsorption performance from aqueous solution

Kong

Cheu

Othman³

et al. 2017

Env Prog and Sustain Energy

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Cetyltrimethylammonium bromide-coated agrosorbents were successfully synthesized through firstly mercerization of raw banana trunk (Raw-BT) with alkali (M-BT) and finally coating with cetyltrimethylammonium bromide (M-CTAB-BT). The characterization was done using an energy dispersive X-ray spectrophotometer, a Fourier transform infrared spectrophotometer and a field emission scanning electron microscope. The Brunauer, Emmett, and Teller analysis was also conducted. The benzene adsorption performance of BT agrosorbents was improved by mercerization and surfactant coating according to the following order: Raw-BT (340.25 3 10 2 mmol/g) < CTAB-BT (382.41 3 10 23 mmol/ g) < M-CTAB-BT (535.62 3 10 23 mmol/g). The adsorption data obeyed the Langmuir and pseudo-second order (PSO) kinetic models with film diffusion as the rate-limiting step. The agrosorbent regeneration as well as comparison to literature data indicated the modified BT and thus the agrowaste biomass could be alternative agrosorbent precursors for removing benzene from aqueous solutions.

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“…Na literatura, entre os estudos observados com o uso da cinza do bagaço da cana-de-açúcar destacam-se a adsorção de acrilonitrila em solução aquosa, bastante usada na produção de acrílico, resina e borrachas [17], bem como a CBC foi usada para a remoção de indol (composto orgânico aromático heterocíclico) [18], mercúrio [19], chumbo, cádmio [20], flúor [21] e ácido benzoico diminuindo concentrações consideradas tóxicas [22].…”

Section: Introductionunclassified

Adsorção de Cu 2+ e Cr 3+ em efluentes líquidos utilizando a cinza do bagaço da cana-de-açúcar

et al. 2015

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Resumo Os efluentes líquidos de algumas indústrias apresentam traços de metais nocivos que possuem propriedade bioacumulativa, o que contribui para o aumento de sua toxicidade. Tendo em vista o crescimento industrial, e o consequente aumento de emissões de contaminantes em efluentes líquidos, a adsorção está entre as operações aplicadas para diminuir as concentrações dos metais a fim de atender a regulamentação ambiental vigente. A biomassa residual vem ganhando destaque no tratamento desses efluentes por se um material renovável e de baixo custo, quando comparado com os adsorventes convencionais. O objetivo deste trabalho é avaliar a eficiência da cinza do bagaço da cana-de-açúcar (CBC) na adsorção dos íons metálicos Cu2+ e Cr3+ por meio de ensaios de isoterma de adsorção. A CBC foi caracterizada quanto a sua microestrutura, composição química, área de superfície específica e morfologia, e o adsorbato foi analisado por absorção atômica de chama. A CBC apresentou-se de maneira eficaz como um bioadsorvente para ambas as soluções sintéticas, contendo os íons Cu2+ e Cr3+, presentes nos efluentes líquidos. As isotermas de adsorção apresentaram um perfil crescente, indicando a eficiência na remoção média de 97,3% para o Cr3+ e 96,4% para o Cu2+, podendo este material ser aplicado como adsorvente em efluentes industriais.

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Comparative studies on adsorptive removal of indole by granular activated carbon and bagasse fly ash

Cited by 14 publications

References 54 publications

Deep Denitrogenation of Model Diesel Fuel Using Ni‐doped Mesoporous Carbon: Synthesis Route and Adsorption Study

Deep Denitrogenation of Model Diesel Fuel Using Ni‐doped Mesoporous Carbon: Synthesis Route and Adsorption Study

Cetyltrimethylammonium bromide‐coated agrosorbents and their high benzene adsorption performance from aqueous solution

Adsorção de Cu 2+ e Cr 3+ em efluentes líquidos utilizando a cinza do bagaço da cana-de-açúcar

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