Sisa organik terjana dari pasar basah mempunyai kelompok peratusan yang tertinggi dalam sisa pepejal bandaran. Kajian ini tertumpu pada pemilihan kaedah pengkomposan berdasarkan kualiti kompos yang terbaik. Aplikasi mikrob (B) juga dinilai sama ada efektif bagi mempercepat proses pengkomposan. Pengkomposan diuji dalam bentuk timbunan berudara (AW) dan deram berputar (RD) buatan sendiri. Sisa organik seperti sisa-sisa ayam (1.4kg), ikan (1.6kg) dan sayur (2.1kg) yang diambil dari pasar Parit Buntar dicampur dengan daun kering (5.5.kg) pada nisbah (1:1). Uji kaji seperti suhu, pH, kandungan lembapan, nisbah karbon/nitrogen (C:N), kandungan nutrient, fosfat (PO43-), nitrat (NO3-), sulfat (SO42) dan kalium (K+), logam berat, kadmium (Cd), kuprum (Cu), mangan (Mn), nikel (Ni), plumbum (Pb) dan zink (Zn) dan kualiti kompos dianalisis. Data yang diperoleh dari kajian ini dibandingkan dengan standard kompos yang optimum. Hasil kajian menunjukkan deram berputar yang diisi mikrob (RDB) dipilih untuk kegunaan tanaman sebagai baja disebabkan kandungan Zn yang rendah (140 mg/g) dan kandungan nutrisi yang tinggi. Keputusan akhir yang diperoleh dalam deram berputar bersama mikrob (RDB) dalam 14 hari, pH: 6.24±0.390, C:N:6:1, VS pengurangan:15.83%, dan GI:43%. Degradasi sisa boleh ditingkatkan dalam RDB jika tempoh dipanjangkan kepada 27 hari kerana dijangka mempunyai kualiti yang lebih baik dan menghasilkan degradasi lebih tinggi daripada hasil dari deram berputar tanpa mikrob (RDA); keputusan akhir dalam deram berputar tanpa mikrob (RDA) dalam 27 hari, pH:6.31 ± 0.217,C:N;5:1,VS rugi: 22.4%, dan GI:50%.
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Organic waste is the most abundant proportion in municipal solid waste generated from wet market. This study was carried out to determine the best method of composting on producing a good quality compost. The effectiveness on application of microbes (B) to accelerate composting process was also studied. Composting was run in a locally-made of aerated windrow (AW) and rotary drum (RB) reactor. Organic waste comprised of chicken (1.4kg), fish (1.6kg) and vegetable (2.1kg) wastes which were collected from Parit Buntar wet market were mixed with high carbon matter, dried leaves (5.5kg) of ratio 1:1. Characteristics such as temperature, pH, moisture content, carbon/nitrogen (C:N) ratio, volatile solids, nutrient content, phosphate (PO43-), nitrate (NO3-), sulphate (SO42) and potassium (K+), level of heavy metals, cadmium (Cd), copper (Cu), manganese (Mn), nickel (Ni), lead (Pb) and zinc (Zn) and quality of compost in this compost were analyzed. Data obtained from this study were compared with the optimum standard for compost material. Hence, rotary drum with addition of microbes (RDB) is chosen to produce soil fertilizer due to the lowest content of Zn concentration (140 mg/g) and higher content of nutrients. The final results reached by rotary drum having microbes (RDB) in 14 days, pH: 6.24±0.390, C:N ratio: 6:1, VS loss:15.83%, and GI:43%. Degradation of waste can be increased in RDB if the duration is prolonged to 27 days as the results are assumed to have better quality and produce higher degradation than the result in rotary drum without microbes (RDA); final results in rotary drum without microbes (RDA) in 27 days, pH: 6.31±0.217, C:N ratio: 5:1, VS loss:22.4%, and GI:50%.
Comparison between different composting systems for treating municipal organic waste / Norhafizah Bazal Ahmad