RESEARCH ARTICLE Vol. 25 (3) December 2013, p. 348-356 OPTIMISATION OF ENZYMATIC SLUDGE PALM OIL RECOVERY FROM PALM OIL MILL EFFLUENT USING RESPONSE SURFACE METHODOLOGY NOORSHAMSIANA, A W*; ASTIMAR, A A*; NOR HAYATI, M**; NOR FAIZAH, J*; MOHAMADIAH, B* and NORHAYATI, S* FULL TEXT | DOWNLOAD PDF