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Abstract - Issue Sep 2014, 35 (5) Back
nstantaneous and historical temperature effects on a-pinene
properties of zeolites synthesized from
fly ash for Cu (II)
Cheng Huaigang*, Zhang Zepeng and Cheng Fangqin
Resources and Environment Engineering, State Environment Protection Key
Laboratory of Efficient Utilization of
Resources, Shanxi University, Taiyuan-030 006, China
Author E-mail: email@example.com
24 April 2014
19 June 2014
30 June 2014
study explored the hydrothermal synthesis of zeolites in a homogeneous
reactor using coal fly ash (CFA) as a raw material via a two-step method at
normal pressure. Fourier transform infrared spectroscopy and X-ray powder
diffraction analysis showed that the synthetic products has the basic
structural unit of microporous zeolite molecular sieves, and consiste of
zeolite 4A and zeolite X. The ability of zeolites synthesized from CFA to
adsorb Cu (II) was studied. The optimal conditions for adsorption were as
follows: pH 5 and dosage of modified CFA 4g l-1. The isothermal
adsorption of zeolites of Cu (II) showed that the maximum adsorption quantity
ranged from 69.44 (at 20oC) to 140.85 mg g-1 (at 50oC).
Adsorption kinetics analysis showed that chemical adsorption was the
rate-controlling step. Apparent activation energy data, however, showed that
the process of adsorption of Cu (II) had the features of physical adsorption.
Thus, the adsorption process included both chemical and physical adsorption.
Coal fly ash, Copper ions, Zeolite
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