This study assesses the treatment of palm oil mill (PaM) final discharge wastewater using a cost effective technology approach of phytoremediation. paM final discharge wastewater obtained from final distribution pond at KL Kepong Berhad Palm Oil Mill, Tanjong Malim was treated with three species of local macrophytes, Leersia oryoides, Pistia stratiotes and Ludwigia peploides. The phytoremediation performance was evaluated by monitoring the changes and removal efficiency (%) of BOD5, COD, N-NH3, TSS and pH level. The characteristics of nutrient uptake were determined by measuring the percentage of C, H and N elements, bioconcentration factor (BCF) and translocation factor (TF) of Ca, Mg, K, Na, Fe and Zn in leaf, stem and root organs of the macrophytes. The microbial population in the rhizosphere was identified using partial 16S rRNA molecular technique. It was found that BOD5, COD, N-NH3 removal efficiencies of 93%, 30%, and 82% were achieved for Pistia stratiotes, 90%, 27% and 80% for.....

2212 hits

Kajian ini bertujuan untuk membina satu instrumen penilaian bagi menilai amalan pentaksiran guru Matematik sekolah menengah. Instrumen ini adalah berbentuk rubrik dua lapis. Berdasarkan tinjauan literatur, instrumen kajian dibina merangkumi dua komponen utama: (1) ciri-ciri sedia ada yang dimiliki guru; serta (2) amalan yang dilakukan. Komponen pertama terdiri daripada empat konstruk iaitu kepercayaan dan nilai guru, pengetahuan, kemahiran dan sikap. Komponen kedua, amalan yang dilakukan guru terdiri daripada lima konstruk iaitu blueprint mata pelajaran, hasil pembelajaran, hasil sasaran yang dijangka, folio A dan folio B. Adalah diharapkan artikel ini dapat memberi gambaran mengenai instrumen penilaian amalan pentaksiran guru Matematik sekolah menengah yang dibina...

4765 hits