Sisa makanan yang diperoleh daripada pasar basah di Parit Buntar telah dirawat menggunakan kaedah pencernaan sistem anaerobik di bawah suhu mesophilic iaitu 350C. Jenis kumpulan sisa makanan tersebut telah dibahagikan kepada tiga kumpulan iaitu karbohidrat (45%), protein (30%) dan sayur- sayuran sebanyak 25%. Manakala, pencerna anaerobik telah diambil dari lokasi yang berbeza seperti dari kolam takungan Malpolm, United Oil Palm, Jelutong Sewage Treatment Plant dan juga di Loji Kuasa Mini Biogas Usains, Kampus Induk USM. Keseluruhan nilai pH menunjukkan nilai purata di antara 7-8 di mana julat tersebut adalah sangat sesuai untuk menyokong penghasilan biogas tetapi nilai pH yang dianalisis daripada pencerna Malpolm telah menunjukkan nilai pH yang kurang daripada 7. Nisbah sisa makanan terhadap pencerna diubah-ubah kerana ingin menyiasat pencapaian oleh setiap nisbah yang telah diatur. Analisis juga dibuat terhadap pencapaian dan kestabilan rawatan anaerobik yang menggunakan sistem separa. Kestabilan proses pencernaan ini telah dinilai berpandukan nilai pH dan alkaliniti. Manakala, prestasi pencernaan akan diukur berpandukan nilai keperluan oksigen kimia, jumlah pepejal, penurunan pepejal meruap dan juga jumlah gas metana yang dihasilkan di dalam isi padu biogas. Berdasarkan keputusan daripada kerja eksperimen, keputusan menunjukkan bahawa penghasilan biogas tidak termasuk gas metana kerana tiada gas metana yang dikesan. Sebenarnya, penghasilan gas metana juga bergantung kepada nisbah sisa makanan terhadap pencerna. Dalam pembelajaran ini, didapati penghasilan biogas yang paling tinggi (terdiri daripada kandungan gas karbon dioksida) adalah sebanyak 4080 ml/sehari dengan menggunakan pencerna yang diambil daripada United Oil Palm .
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The food waste from wet market in Parit Buntar was treated by anaerobic digestion in mesophilic temperature which is 350C. The three different group of food waste were divided into a carbohydrate, protein and fat, and vegetable which is 45%, 30% and 25% respectively. Meanwhile, the digester was collected from the holding pond like Malpolm, United Oil Palm, Jelutong Sewage Treatment Plant and also at the Mini Biogas Power Plant in Usains, USM Main Campus. The average pH value of the seed was around 7-8 to support the production of biogas, except the seed taken from Malpolm which is less than 7. A different ration of food waste to inoculums was set up to investigate the performance of each ration. The stability and performance of the treatment in batch system was analyzed. The digester stability was evaluated based on parameter involved such as pH and alkalinity. Meanwhile, the digester performance was measured based on COD, total solid, volatile solid removal and methane content in biogas. Result from the experiment works show that there is methane inhibition happen in the digester since no methane gas was detected. Actually, the generation of methane was significantly depended on ration of food waste into seed. The highest biogas (mostly carbon dioxide) production that obtained in this study was found in the mixture 2 of run 3 which is about 4080 ml/day that use the seed taken from the United Oil Palm.
Feasibility of anaerobic digestion for parit buntar wet market waste / Bibi Hasbi Ab Aziz