Optimizing Cr(VI) adsorption on activated carbon produced from heavy oil fly ash

Mofarrah, Abdullah; Husain, Tahir; Chen, Bing

doi:10.1007/s10163-013-0197-7

Cited by 17 publications

(8 citation statements)

References 23 publications

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“…Further, there was a good correlation between PEHFOA adsorption values and the Langmuir and Freundlich model, with 98 and 99 % correlation coefficients, respectively. In their adsorption study, Mofarrah et al [100] reported that 91.51 % of Cr(VI) was efficiently adsorbed using the AC from HFOA reported earlier. [41] The optimum conditions for maximum adsorption were pH 2.0 and 2 g AC/50 mL, while for Cr(VI) the optimum concentration was 150 mg L À 1 .…”

Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 89%

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Characterization, Processing, and Application of Heavy Fuel Oil Ash, an Industrial Waste Material – A Review

Basha

Aziz

Maslehuddin

et al. 2020

The Chemical Record

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Heavy fuel oil ash (HFOA) is generated as an industrial waste material during the combustion of heavy fuel oil in power/desalination plants. With increasing energy demands, a significant volume of HFOA is generated. It is generally disposed of in landfills, causing environmental pollution, as it contains several toxic elements. Recently, efforts were made towards developing strategies for reusing industrial waste materials and creating value-added products from the waste materials. Despite significant information available in the literature on the utilization of HFOA, there is still a need for a thorough and systematic review on the characterization and utilization of HFOA in various applications. Consequently, this paper aims to present a critical review of the literature on HFOA generation, its chemical composition, physical properties, morphology, and applications. It is encouraging to note that HFOA has been used in several potential applications, such as the preparation of activated carbon and carbon nanotubes, metal recovery, environmental pollutant removal, polymer composites and construction materials, etc. However, the development of several value-added materials utilizing HFOA and its applications in other areas such as coatings, cathodic protection systems, and phase change materialswould emerge as a new topic of research. It is expected that this review will act as a precursor for further research on the use of HFOA in industrial applications. Since the use of HFOA will lead to environmental, economic, and technical benefits, research in the utilization of this industrial waste material is highly recommended.

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Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 89%

“…In their adsorption study, Mofarrah et al [100] . reported that 91.51 % of Cr(VI) was efficiently adsorbed using the AC from HFOA reported earlier [41] .…”

Section: Applications Of Hfoa and Its Derived Carbon Productsmentioning

confidence: 98%

Characterization, Processing, and Application of Heavy Fuel Oil Ash, an Industrial Waste Material – A Review

Basha

Aziz

Maslehuddin

et al. 2020

The Chemical Record

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“…Indicator system is established for evaluation of the third-party governance over environmental pollution. 26 Level-2 indicators were chosen to evaluate the environmental pollution control effects, which include the basic capability of an enterprise, operation of facilities, technical economy, environmental benefits and management level [1,2].…”

Section: Definition Of Evaluation Indicatorsmentioning

confidence: 99%

Study on Application of the Evaluation Indicator System for the Third-party Environmental Pollution Control

Guo

Ling

et al. 2018

MATEC Web Conf.

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A pilot evaluation indicator system was applied to environmental pollution governance. Four iron and steel enterprises introducing the third-party environmental pollution governance service were selected to carry out the evaluation and application, including sintering flue gas desulfurization and dust removal projects and waste water comprehensive treatment projects to which iron and steel enterprises pay high attention in “the 13th Five-Year Plan” period. Delphi Method was used to grade and quantify each indicator according to experience and determine the validity of scores. Radar charts for the four enterprises were formed based on the weights of Level-2 indicators for comprehensive evaluation and quantification of basic capability, facility operation, technical economy, environmental benefits and management level, and conclusions related to advantages and disadvantages of these enterprises were drawn. This research supplies a scientific method for evaluating the effect of environmental pollution control by third-party enterprises.

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“…The resulting OFA displayed a high surface area of 67.9 m 2 /g [29]. In a recent study, Mofarrah et al treated OFA with various oxidizing agents, that is, nitric, hydrochloric, and phosphoric acids, followed by physical activation at 800 ∘ C. The researchers obtained activated OFA with a surface area of 123.19 m 2 /g and a total pore volume of 0.2215 cm 3 /g [30]. Table 2 shows the elemental analysis of OFA before and after chemical treatment.…”

Section: Characterization Of Activated Flymentioning

confidence: 99%

An Experimental and Kinetic Study of the Sorption of Carbon Dioxide onto Amine-Treated Oil Fly Ash

Saad

Al–Marri

Yaumi

et al. 2016

Journal of Chemistry

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A new CO2adsorbent is produced from waste oil fly ash (OFA). Ammonium hydroxide solution is used to convert OFA to activated carbon. Then, the product is used for the adsorption of CO2from a nitrogen/carbon dioxide (N2/CO2) gas mixture. The OFA samples are characterized by several techniques. Chemical treatment of OFA considerably changed its surface morphology. In particular, its surface area, as determined by BET measurements, increased from 59 to 318 m2/g. The amine-functionalized ash had a monolayer adsorption capacity of 74.51 mg/g and was obtained at relative pressure,0.05<p/ps<0.35. A kinetics study showed that the CO2adsorption capacity of OFA increased with increasing CO2flow rates and concentrations and decreasing the relative humidity. Unlike physical adsorption, the chemisorption process resulted in increased adsorption capacity with increasing temperatures over the range 0–40°C. We also found that the adsorption process was endothermic (80–173 kJ/mol). The isotherm data for the adsorption process were fitted using different models. The saturation capacity determined from the Sips model, which corresponds to the sum of the saturation capacities of all of the adsorbed layers, was 540.3 mg/g of ash.

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Optimizing Cr(VI) adsorption on activated carbon produced from heavy oil fly ash

Cited by 17 publications

References 23 publications

Characterization, Processing, and Application of Heavy Fuel Oil Ash, an Industrial Waste Material – A Review

Characterization, Processing, and Application of Heavy Fuel Oil Ash, an Industrial Waste Material – A Review

Study on Application of the Evaluation Indicator System for the Third-party Environmental Pollution Control

An Experimental and Kinetic Study of the Sorption of Carbon Dioxide onto Amine-Treated Oil Fly Ash

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