Preparation of a novel inorganic polymer coagulant from oil shale ash

Sun, Tong; Liu, Lianli; Wang, Lili; Zhang, Yanping

doi:10.1016/j.jhazmat.2010.10.041

Cited by 15 publications

(4 citation statements)

References 24 publications

(31 reference statements)

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“…Therefore, it is necessary to develop new approaches to reduce the accumulation of OSA and further explore its new applications. So far, considerable efforts have been dedicated to explore the novel applications of OSA, such as the synthesis of zeolites, tobermorites, adsorbents, coagulant, alumina, and nano-silica [2,[6][7][8][9][10]. Among them, high-grade silica preparation with the waste OSA has attracted an increasing interest due to its double benefits of both resource re-generation and pollution abatement.…”

Section: Introductionmentioning

confidence: 99%

The preparation of a green shape-stabilized composite phase change material of polyethylene glycol/SiO2 with enhanced thermal performance based on oil shale ash via temperature-assisted sol–gel method

Qian

et al. 2015

Solar Energy Materials and Solar Cells

169

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Section: Introductionmentioning

confidence: 99%

The preparation of a green shape-stabilized composite phase change material of polyethylene glycol/SiO2 with enhanced thermal performance based on oil shale ash via temperature-assisted sol–gel method

Qian

et al. 2015

Solar Energy Materials and Solar Cells

169

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“…This indicates that the alkalinity groups have reacted with the glass substrate in the hydrothermal process, and the film sediment is combined with the glass substrate by chemical bond. The peaks at 672 and 420 cm −1 are attributed to flexural vibrations of Fe-OH, at 603 cm −1 they are the characteristic absorption peaks of Al-OH and Mg-OH flexural vibrations, and the peaks at 467 cm −1 are for Fe-O [32,33]. Fig.…”

Section: Resultsmentioning

confidence: 90%

“…The peaks at 672 and 420 cm −1 are attributed to flexural vibrations of Fe–OH, at 603 cm −1 they are the characteristic absorption peaks of Al–OH and Mg–OH flexural vibrations, and the peaks at 467 cm −1 are for Fe–O [32, 33]. Fig.…”

Section: Resultsmentioning

confidence: 99%

Hydrothermal synthesis of high refractive index thin films from chromium slag

Sun

Liu

et al. 2013

Micro Nano Lett.

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Chromium slag is a hazardous waste, and its high-value-added comprehensive utilisation would be advantageous. High refractive index thin films were prepared on glass substrates by a hydrothermal method from chromium slag with different mineralisers. The samples were characterised by inductively coupled plasma, X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, an atomic force microscope, a transmission electron microscope and by film thickness and refractive index. The results show that a few Fe 2 O 3 , FeOOH, Al 2 O 3 , AlOOH or MgO crystals are formed, and most compounds of iron, aluminium, magnesium and chromium are still in amorphous state. The film materials are combined with a glass substrate by a chemical bond. The coordination ability of mineraliser anion and metal ion affects the sediment reaction rates. With NaClO 3 or NaHCO 3 as a mineraliser, the film surface is a perfect threedimensional space orientation network sediment with fine twines and small pores. The thinner the film, bigger the refractive index will be. The films' refractive index is mainly related to the film structure and non crystalline phase.

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“…Today oil shale ash is used in the building materials industry to produce some concrete types, and also in agriculture, but these applications are of low efficicency. Therefore, many researchers worldwide are working on the synthesis of new kinds of adsorbents [6] and filter materials [7], as well as on the extraction of Al 2 O 3 [8] and preparation of novel inorganic polymer coagulants [9] using oil shale ash, which eventually should add value to the ash. However, most of the work is currently limited to lab-scale experiments or has not yet given economically feasible results.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Lead and Cadmium Ions From Aqueous Solutions by Modified Oil Shale Ash

Zhu¹,

Xiu²,

Liu

et al. 2012

Oil Shale

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Oil shale ash, which is a by-product from oil shale processing, was converted into an adsorbent by alkali hydrothermal activation using sodium hydroxide. The alkali-treated ash was studied for its capacity to remove lead and cadmium ions from aqueous solutions. The results of the study showed that the adsorption of lead and cadmium ions by the modified oil shale ash depended on adsorbent concentration, ash particle size, contact time and pH of solution. When the initial concentration of an aqueous solution was 10mg/L and that of the adsorbent 5g/L, 91% of lead and cadmium ions was removed from the solution. The adsorption isotherm data of the alkali-treated oil shale ash were fitted to the Langmuir isotherm model with R 2 of 0.9995 and 0.9963 at 20 ℃. The scanning electron microscopic (SEM) analysis showed that after modification the porosity of the ash increased and, as a result, complex spatial networks were formed, which provided sufficient space for the adsorption of lead and cadmium ions. The energy dispersive spectrometric (EDS) analysis confirmed the adsorption of lead and cadmium ions in the modified oil shale ash sample, while in the control sample these elements were absent. Its excellent adsorption capacity and efficiency makes the alkali-treated oil shale ash a good candidate for heavy metals removal from wastewater.

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Preparation of a novel inorganic polymer coagulant from oil shale ash

Cited by 15 publications

References 24 publications

The preparation of a green shape-stabilized composite phase change material of polyethylene glycol/SiO2 with enhanced thermal performance based on oil shale ash via temperature-assisted sol–gel method

The preparation of a green shape-stabilized composite phase change material of polyethylene glycol/SiO2 with enhanced thermal performance based on oil shale ash via temperature-assisted sol–gel method

Hydrothermal synthesis of high refractive index thin films from chromium slag

Adsorption of Lead and Cadmium Ions From Aqueous Solutions by Modified Oil Shale Ash

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