Adsorption of heavy metals from recovered base oil using zeolite / Dahkki Susiwi, author, Mohamed Wijayanuddin Ali, author, Adnan Ripin, author, Arshad Ahmad, author, International Conference on Chemical & Bioprocess Engineering (3rd: 2009: Sabah)

Modelling for extraction of major phytochemical components from eurycoma longifolia / Dahkki Mardawani Mohamad, 1985-, author, Mohamed Wijayanuddin Ali, author, Arshad Ahmad, 1963-, author, International Conference on Chemical & Bioprocess Engineering (3rd: 2009: Sabah)

Metals removals from recovered base oil using chitosan biopolymers / Dahkki Siti Munira Jamil, 1985-, author, Mohamed Wijayanuddin Ali, author, Adnan Ripin, author, Arshad Ahmad, author, International Conference on Chemical & Bioprocess Engineering (3rd: 2009: Sabah)