Enhancement of surface properties of oil fly ash by chemical treatment

Shawabkeh, Reyad; Khan, Muhammad Jamal; Al-Juhani, Abdulhadi A.; Wahhab, Hamad I. Al‐Abdul; Hussein, Ibnelwaleed A.

doi:10.1016/j.apsusc.2011.07.136

Cited by 29 publications

(26 citation statements)

References 24 publications

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“…A sharp peak at 1711 cm −1 represents C=O in ester group as noted by Shawabkeh et al [27]. A broad trough was observed at 3436 cm −1 as a result of O-H stretching of alcoholic groups [27, 37]. However, after treatment with an acid (HNO 3 ), peaks were only seen at lower and higher region of the spectra; this might be a result of the bond breaking due to reactions between the acid and fly ash particles.…”

Section: Resultsmentioning

confidence: 88%

Cadmium Removal from Contaminated Water Using Polyelectrolyte-Coated Industrial Waste Fly Ash

Olabemiwo

Tawabini

Patel

et al. 2017

Bioinorganic Chemistry and Applications

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Fly ash (FA) is a major industrial waste generated from power stations that add extra cost for proper disposal. Recent research efforts have consequently focused on developing ways to make use of FA in environmentally sound applications. This study, therefore, investigates the potential ability of raw fly ash (RFA) and polyelectrolyte-coated fly ash (PEFA) to remove cadmium (Cd) from polluted water. Using layer-by-layer approach, functionalized fly ash was coated with 20 layers from 0.03% (v/v) of cationic poly(diallyldimethylammonium chloride) (PDADMAC) and anionic polystyrene sulfonate (PSS) solutions. Both surface morphology and chemical composition of the adsorbent (PEFA) were characterized using Field-Emission Scanning Electron Microscope (FE-SEM), X-Ray Diffraction (XRD), Fourier-Transform Infrared (FTIR), and X-Ray Fluorescence (XRF) techniques. The effects of pH, adsorbent dosage, contact time, initial contaminant concentration, and mixing rate of the adsorption of Cd were also studied in batch mode experiments. Results of the study revealed that a 4.0 g/L dosage of PEFA removed around 99% of 2.0 mg/L of Cd in 15 min at 150 rpm compared to only 27% Cd removal achieved by RFA under the same conditions. Results also showed that adsorption by PEFA followed both Langmuir and Freundlich models with correlation coefficients of 98% and 99%, respectively.

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Section: Resultsmentioning

confidence: 88%

Cadmium Removal from Contaminated Water Using Polyelectrolyte-Coated Industrial Waste Fly Ash

Olabemiwo

Tawabini

Patel

et al. 2017

Bioinorganic Chemistry and Applications

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show abstract

“…In Fig. 1(a), XRD patterns show the presence of, zeolite, carbon, quartz, mullite, faujasite, sodalite and cancrinite [16,25] for the untreated fly This indicates that mullite and quartz are the two main phases of the crystalline components of the untreated fly ash. In Fig.…”

Section: X-ray Diffraction Spectrometry (Xrd)mentioning

confidence: 95%

“…For the untreated ash, the surfaces are blocked with some particles of calcium and having less porosity. The particles size is in the range of 10-100 m [16]. In Fig.…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 97%

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Surface modification of oil fly ash and its application in selective capturing of carbon dioxide

Yaumi

Hussien

Shawabkeh

2013

Applied Surface Science

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“…4, the size of the fly ash decreased and became glass shard-like. The decrease in size might be due to the reaction of sulphuric acid with fly ash [26].A.1 …”

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confidence: 99%

Effect of Particle Loading, Temperature and Surface Treatment on Moisture Absorption of CFB Fly Ash Reinforced Thermoset Composite

Onishi¹

2015

IJCEA

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Abstract-Coal combustion is widely used in the Philippines and is a major contributor to power generation due to its low cost; however, it produces wastes such as emissions and fly ash (FA). Traditional fuel combustion uses pulverized coal (PC) boilers while modern technology involves the use of circulated fluidized bed (CFB) boilers which produce less emissions and are more efficient. However, the fly ash produced from CFB combustion has limited application to the construction industry as opposed to PC FA which is used as an additive to the cement industry. In this study, CFB FA is used as filler and the matrix is orthophthalic unsaturated polyester resin. Moisture absorption study is conducted on the composite by immersing in water and constant weighing of samples at specified time intervals. Percent weight gain is reported. Particle loading and sorption temperatures are varied and their effects are observed. With the increase in particle loading, absorbed moisture increases while diffusivity decreases. Increase in temperature leads to an increase in moisture absorption and diffusivity. The CFB FA is also treated using coconut oil which is composed of saturated fatty acids (majority of which is lauric oil). Coconut oil serves as a non-coupling type surface modifier. Untreated and treated fly ash samples are characterized by X-Ray Flourescence (XRF), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR). The effect of treatment to composite moisture absorption at 80oC (different particle loading) is observed and it is found to decrease moisture absorption.Index Terms-CFB fly ash, moisture absorption, particle filled composite, polyester composite. I. INTRODUCTIONCombustion of solid fuels is one of the most widely used source of energy. Worldwide, coal is a sought-after energy source. It is often the cheapest fuel option and has a large reserve. Philippines is a coal consuming country, having coal as one of the major contributors to power generation [1]. Energy consumption and generation in the Philippines is increasing and with this power generation from coal will also increase. This will continue to increase as the government promotes clean coal technology, production of coal and establishment of ASEAN Coal Supply Security Agreement. The increase in production of coal is targeted to displace and decrease oil use [2].With environmental awareness and restrictions, cleaner and more efficient burning of fuel is now available thru the Manuscript received April 15, 2014; revised June 25, 2014. This work was supported by the Philippine Department of Science and TechnologyEngineering and Research Development for Technology.Sakura E. Onishi is with the University of the Philippines-Diliman, Philippine (e-mail: sakura.onishi@gmail.com).clean coal technology, wherein circulating fluidized bed (CFB) are used. Circulating fluidized bed combustion (CFBC) boiler can utilise all grades of coal and lignites in an efficient and environmentally clean way (lower emissions) [3].Combustion of solid f...

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Enhancement of surface properties of oil fly ash by chemical treatment

Cited by 29 publications

References 24 publications

Cadmium Removal from Contaminated Water Using Polyelectrolyte-Coated Industrial Waste Fly Ash

Cadmium Removal from Contaminated Water Using Polyelectrolyte-Coated Industrial Waste Fly Ash

Surface modification of oil fly ash and its application in selective capturing of carbon dioxide

Effect of Particle Loading, Temperature and Surface Treatment on Moisture Absorption of CFB Fly Ash Reinforced Thermoset Composite

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