Electroosmotic Phenomena in Tropical Peat

Afshin Asadi1 and Bujang B. K. Huat2

1Department of Civil Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.

2School of Graduate Studies, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.


Electro-osmotic experiments were carried out on a very slightly, a moderately, and a very highly decomposed undisturbed tropical peats to develop a fundamental understanding of using electrokinetic techniques for ground modification. The results of study showed the coefficients of electro-osmotic conductivity ranges of the peats were from 1.37 × 10-06 to 1.72 × 10-05 cm2Vs-1. The water flowed from anode to cathode. The zeta potential and cation exchange capacity of the peats were highly pH-dependent. The greater degree of humification resulted in higher electro-osmotic conductivity. The research was important in that it confirmed the peat properties such as high water content, net negative charge, high specific surface area, and the pH-dependent of the charge surface, all make suitable environment for utilization of electro-osmotic techniques.

Keywords: Degree of humification; electroosmoctic conductivity; peat; zeta potential.

     Back to TOC