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Removal performance of elemental mercury by low-cost adsorbents prepared through facile methods of carbonisation and activation of coconut husk

Johari, Khairiraihanna and Alias, Afidatul Shazwani Hazwani and Saman, Norasikin and Shiow, Tien Song and Mat, Hanapi (2015) Removal performance of elemental mercury by low-cost adsorbents prepared through facile methods of carbonisation and activation of coconut husk. Waste Management and Research, 33 (1). pp. 81-88. ISSN 0734-242X

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Official URL: http://dx.doi.org/10.1177/0734242X14562660

Abstract

The preparation of chars and activated carbon as low-cost elemental mercury adsorbents was carried out through the carbonisation of coconut husk (pith and fibre) and the activation of chars with potassium hydroxide (KOH), respectively. The synthesised adsorbents were characterised by using scanning electron microscopy, Fourier transform infrared spectroscopy and nitrogen adsorption/ desorption analysis. The elemental mercury removal performance was measured using a conventional flow type packed-bed adsorber. The physical and chemical properties of the adsorbents changed as a result of the carbonisation and activation process, hence affecting on the extent of elemental mercury adsorption. The highest elemental mercury (Hg°) adsorption capacity was obtained for the CPCHAR (3142.57 µg g-1), which significantly outperformed the pristine and activated carbon adsorbents, as well as higher than some adsorbents reported in the literature.

Item Type:Article
Uncontrolled Keywords:activated carbon, adsorption
Subjects:Q Science > Q Science (General)
Divisions:Energy Research Alliance
ID Code:55271
Deposited By: Muhamad Idham Sulong
Deposited On:04 Sep 2016 01:35
Last Modified:06 Aug 2017 01:53

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