Coal fly ash, a solid waste from thermal power stations was used to successfully remove 2,4-dimethyl phenol by adsorption from aqueous solutions. The rate of adsorption follows first order kinetics before attaining equilibrium. Both diffusional and kinetic resistances affect the rate of adsorption and their relative effects vary with operating temperatures. Equilibrium adsorption data satisfied both Langmuir and Freundlich isotherms. © 1995.

D BATABYAL

A SAHU

S K CHAUDHURI

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Kinetics and mechanism of removal of 2, 4-dimethyl phenol from aqueous solutions with coal fly ash

Separations Technology

A study was conducted to determine the catalytic potential of alum mud (AM) for aqueous phase decomposition of H2O2 in an alkaline medium. It was found that AM containing Si, Ti, Al, Fe, etc.-bearing phases can be an effective heterogeneous catalyst for aqueous phase decomposition of H2O2 under appropriate operating conditions. Data indicate that the catalytic effect of AM may be useful both in the treatment of hazardous effluents with H2O2 and also as an auto-catalyst in remediation of contaminated sites containing AM.

Fulltext

Clays and Clay Minerals

Alum mud: Phase identification and catalytic potential for aqueous-phase decomposition of hydrogen peroxide

Fly ash, generated during the combustion of coal for energy production, is an industrial by-product which is recognized as an environmental pollutant. Because of the environmental problems presented by the fly ash, considerable research has been undertaken on the subject worldwide. In this paper, the utilization of fly ash in construction, as a low-cost adsorbent for the removal of organic compounds, flue gas and metals, light weight aggregate, mine back fill, road sub-base, and zeolite synthesis is discussed. A considerable amount of research has been conducted using fly ash for adsorption of NOx, SOx, organic compounds, and mercury in air, dyes and other organic compounds in waters. It is found that fly ash is a promising adsorbent for the removal of various pollutants. The adsorption capacity of fly ash may be increased after chemical and physical activation. It was also found that fly ash has good potential for use in the construction industry. The conversion of fly ash into zeolites has many applications such as ion exchange, molecular sieves, and adsorbents. Converting fly ash into zeolites not only alleviates the disposal problem but also converts a waste material into a marketable commodity. Investigations also revealed that the unburned carbon component in fly ash plays an important role in its adsorption capacity. Future research in these areas is also discussed.

Progress in Energy and Combustion Science

A review on the utilization of fly ash

Journal of Chemical Technology & Biotechnology

Removal of victoria blue from aqueous solution by fly ash

Fuel and Energy Abstracts

95/05951 Fly ash - a cheap catalyst in wet oxidation of an industrial pesticide effluent

Reviews in Medical Virology

HIV-1 Protease inhibitors: Their development, mechanism of action and clinical potential

Environmental Science & Technology

Sorption of Low Molecular Weight Organic Contaminants by Fly Ash: Considerations for the Enhancement of Cutoff Barrier Performance

Fly Ash in Concrete

Other uses of fly ash

Journal	Separations Technology
Publisher	-
ISSN	0956-9618