Removal of Methylene Blue From Aqueous Solution by Using Oil Shale Ash

Zhao, Zhengxu; Yuan, Jiang; Fu, Mingyan; Su, Lei; Li, Zhaohui

doi:10.3176/oil.2014.2.06

Cited by 15 publications

(6 citation statements)

References 31 publications

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“…The ash was prepared after undergoing the pyrolysis process [29], by placing 300 g of the oil shale powder in a cylindrical glass retort and flushing it with nitrogen at a flow rate of 100 ml min -1 . During heat-up, the generated adsorption isotherm curves.…”

Section: Methodsmentioning

confidence: 99%

Treated oil shale ash and its capacity to remove Cd and Pb from aqueous solutions

Al-Ayed¹,

El-Hasan²,

Amro³

et al. 2022

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Cadmium (Cd) is the most highly toxic heavy metal even at a trace level. In this study, the oil shale ash treated material was used as an adsorbent to remove cadmium and lead (Pb) metals/ions from aqueous solutions. The absorbent treated oil shale material was characterized prior to experimental work using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The effects of multiple factors on percent metal removal, including contact time, initial ions concentration and pH, are investigated. Results show that the adsorption capacities of Pb and Cd are 29.15 and 23.81 mgg -1 , whereas removal efficiencies are 56% and 48% in 10 minutes, respectively. Removal efficiency and time of equilibrium are affected by the metal atomic weight (Pb 207.2 u and Cd 112.4 u) and pH values. The equilibrium isotherms were analyzed using Freundlich and Langmuir isotherm models and described by the Freundlich isotherm model indicating a heterogeneous surface of the adsorbent. The calculated Langmuir adsorption constant and maximum adsorption capacity of adsorbent, K L and q max , are 1.313*10 -2 and 25.25, respectively. The Freundlich adsorption constant K F and the characteristic constant of the Freundlich isotherm n are 0.5234 and 1.39, respectively.

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Section: Methodsmentioning

confidence: 99%

Treated oil shale ash and its capacity to remove Cd and Pb from aqueous solutions

Al-Ayed¹,

El-Hasan²,

Amro³

et al. 2022

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“…The textural and structural characteristics of the prepared adsorbents and their removal capacity of the methylene blue molecule revealed that the best adsorbents are obtained upon activation of the two precursors at 300 °C in air but with durations of different activation, 2h for Y and 2.30 for YH (El Harti et al, 2012). Zhao et al (Zhao et al, 2014) removed MB from solution by using oil shale ash, the experimental results showed that both the Langmuir and Freundlich models fitted the MB adsorption data well with an adsorption capacity as high as 250 mg/g. Removal of MB by OSA was relatively fast and equilibrium could be achieved in 2 h. Recently Gouza et al (Gouza et al, 2017) study the effect of heat treatment on the surface properties of selected bituminous shale for cationic dye sorption, the result show that the active sites from shale play an important role for MB removal.…”

Section: Introductionmentioning

confidence: 94%

The use of insoluble matter of Moroccan oil shale for removal of dyes from aqueous solution

Int¹

2019

Preprint

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The study aims to use an adsorbent natural based of Moroccan oil shale of Timahdit area (Y layer) in a physical-chemical adsorption process for treating industrial discharges colorful. The used adsorbent is the insoluble party of the sub-critical extraction of decarbonized oil shale of Timahdit. The tests performed on the methylene blue (MB), showed a strong elimination in the first 10 minutes. The influences of various experimental parameters were studied: mass ratio of adsorbent, time and temperature of thermal treatment, contact time, pH of MB and heating temperature of solution on the parameters of material were studied. The experimental results have shown that the adsorption of methylene blue dye by the adsorbent is more than 90% at initial pH a range 6-7 at room temperature for 30 minutes. The process is simple and the adsorbent produced is a new material with interesting adsorption capacities of moderate cost which does not require an activating agent and can be used as industrial adsorbent for the decontamination of effluents containing organic pollutants.

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“…The bio-solid substances are found to have more adsorption sites which facilitate adsorption and also these sites can be modified to increase the binding energy towards the charged pollutants [4]. Some of the known bio-adsorbents are neem sawdust [5], maize cob [6], shale oil dust [7], apple peels [8]. Nigella Sativa (Black cumin) is the herb that belongs to the Ranunculaceae family [9].…”

Section: Introductionmentioning

confidence: 99%

De-Colourisation of Textile Dye Effluents using cost-effective Nigella Sativa Seed Waste

T¹

2020

IJMTST

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The textile industry is one of the major industries contributing to water pollution. The wet processing of textiles involves the usage of a wide variety of chemicals and dyes. This water-intensive process can potentially affect the water bodies by its effluents. The treatment of dye effluents and reusing of the water could be the possible solution to reduce the impact. Adsorption is one of the most common methods used for textile effluent treatment. Various bio-adsorbents are explored to make the adsorption more sustainable. Nigella Sativa (Black cumin) seeds and its oil are having good medicinal value. The seed-waste left after the oil extraction is found to have active components that can be used as an effective bio-adsorbent. The dye removal efficiency of Nigella Sativa seed-waste is investigated under different experimental conditions (varied adsorbent dose, temperature, pH, and contact time) for reactive dyes. The maximum removal efficiency of 91% is obtained at the optimized experimental condition. Thus the study emphasizes that the no-cost Nigella Sativa seed-waste can be used as an effective bio-adsorbent for reactive dye removal from dye effluents.

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Removal of Methylene Blue From Aqueous Solution by Using Oil Shale Ash

Cited by 15 publications

References 31 publications

Treated oil shale ash and its capacity to remove Cd and Pb from aqueous solutions

Treated oil shale ash and its capacity to remove Cd and Pb from aqueous solutions

The use of insoluble matter of Moroccan oil shale for removal of dyes from aqueous solution

De-Colourisation of Textile Dye Effluents using cost-effective Nigella Sativa Seed Waste

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