Abstract

To remove Ca^{2+} ions, six low rank coals and one coking coal were treated with 0.1 and l.0 N HC1 for 24 h. IR spectra and proximate analysis of the lignites indicated that only slight structural changes had occurred during acid treatment. The swelling ratios of parent and acid-treated coal samples showed that removal of Ca^{2+} resulted in an increase in the swelling ratios. Higher swelling ratios were obtained with acid-washed coal samples. While the highest swelling ratios of the parent lignites were obtained in ethylenediamine, those of acid-treated samples were obtained in pyridine and dimethylformamide.

DOI

First Page

397

Last Page

404

Recommended Citation

MESCİ, N, ŞENELT, A, TOĞRUL, T, & OLCAY, A (2001). Effect of Acid Treatment on Volumetric Swelling Ratios of Coals. Turkish Journal of Chemistry 25 (4): 397-404. https://doi.org/-

Download