Extraction of silica and alumina from coal fly ash for the synthesis of zeolites

Rose Aini Kamarudin, Abdul Salam Matlob, Zaemah Jubri, Zainab Ramli

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

This paper reports the extraction of soluble silicates and aluminates from coal fly ash using microwave irradiation from a domestic microwave oven. Fifteen experimental conditions for the extraction were obtained using Box-Behnken design through manipulation of three variables namely sodium hydroxide (NaOH) concentration, power level of microwave irradiation and exposure time; each variable has three values. The variables with their values were; NaOH concentration (2, 4 and 6 M), exposure time to microwave irradiation (1, 3.5 and 6 min) and power level of the irradiation (10, 50 and 100 Watts). Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) was used to study the amount of silicon and aluminium in the extracts. The extracted silicates and aluminates (after the molar ratio of SiO2 to Al2O 3 was adjusted to unity by adding aluminium foil) were further incubated at 95°C for 72 hours. The products isolated from the 14 experiments were characterized by their XRD images and found to be Na-A zeolites, gibbsite and sodalite octahydrate.

Original languageEnglish
Title of host publicationICEE 2009 - Proceeding 2009 3rd International Conference on Energy and Environment
Subtitle of host publicationAdvancement Towards Global Sustainability
Pages456-461
Number of pages6
DOIs
Publication statusPublished - 01 Dec 2009
Event2009 3rd International Conference on Energy and Environment: Advancement Towards Global Sustainability, ICEE 2009 - Malacca, Malaysia
Duration: 07 Dec 200908 Dec 2009

Publication series

NameICEE 2009 - Proceeding 2009 3rd International Conference on Energy and Environment: Advancement Towards Global Sustainability

Other

Other2009 3rd International Conference on Energy and Environment: Advancement Towards Global Sustainability, ICEE 2009
CountryMalaysia
CityMalacca
Period07/12/0908/12/09

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Environmental Engineering

Fingerprint Dive into the research topics of 'Extraction of silica and alumina from coal fly ash for the synthesis of zeolites'. Together they form a unique fingerprint.

  • Cite this

    Kamarudin, R. A., Matlob, A. S., Jubri, Z., & Ramli, Z. (2009). Extraction of silica and alumina from coal fly ash for the synthesis of zeolites. In ICEE 2009 - Proceeding 2009 3rd International Conference on Energy and Environment: Advancement Towards Global Sustainability (pp. 456-461). [5398608] (ICEE 2009 - Proceeding 2009 3rd International Conference on Energy and Environment: Advancement Towards Global Sustainability). https://doi.org/10.1109/ICEENVIRON.2009.5398608