Principal Investigator

Prof. Dr.Michael Angelo B. Promentilla
De La Salle University (DLSU), Philippines

ASEAN Co-Investigator

Ho Chi Minh City University of Technology (HCMUT)

Japanese Co-Investigator

Prof. Dr. Hinode HIROFUMI
Tokyo Institute of Technology

Awarded year



Collaborative Research Program for Common Regional Issues (CRC)


Environmental Engineering


The research project is about developing ways to use coal ash produced by coal-fired power plant to recover valuable metals through bioleaching, and as raw materials for geopolymer production. Coal ash management is a common regional issues in ASEAN region as disposal of huge amount of such waste becomes an alarming problem. Bioleaching of coal ash can be viewed as a kind of mining and recovery of metals like copper, zinc, among others with the aid of microorganisms. The objective of the bioleaching study of coal ash is to determine its feasibility and the optimal condition to extract these metals including those potentially toxic metals from coal ash. In addition, coal ash is also used to produce an eco-friendly material such as geopolymer, which could potentially has lower carbon footprint and embodied energy in comparison to Portland cement-based materials. Recent findings from this project suggest the viability of bioleaching and geopolymer technology as sustainable solutions to manage coal ash and reduce its impact to the environment.

Project at glance