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All Journal Ecotrophic, Journal of Environmental Science Teknotan: Jurnal Industri Teknologi Pertanian
Novia Lusiana
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Studi Pengaruh Ukuran Partikel dan Penambahan Perekat Tapioka Terhadap Karakteristik Biopelet dari Kulit Coklat (Theobroma cacao L.) sebagai Bahan Bakar Alternatif Terbarukan Retno Damayanti; Novia Lusiana; Joko Prasetyo
Teknotan: Jurnal Industri Teknologi Pertanian Vol 11, No 1 (2017): TEKNOTAN, April 2017
Publisher : Fakultas Teknologi Industri Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (931.801 KB) | DOI: 10.24198/jt.vol11n1.6

Abstract

Limbah kulit kakao dalam jumlah banyak (75% dari dari bahan baku pengolahan coklat) menjadi permasalahan tersendiri pada industri pengolahan coklat. Pemanfaatan kulit kakao berpotensi sebagai bahan bakar alternatif terbarukan karena ketersediaanya yang cukup melimpah dan pemanfaatannya yang belum maksimal. Limbah biomassa dapat digunakan sebagai bahan bakar secara langsung seperti halnya yang telah dilakukan oleh masyarakat Indonesia sejak dulu, tetapi biomassa memiliki kelemahan jika dibakar secara langsung sifat fisiknya menjadi buruk, seperti: kerapatan energi yang rendah dan permasalahan penanganan, penyimpanan, serta transportasi. Untuk meningkatkan kualitas pembakaran biomassa, saat ini telah dikembangkan bahan bakar biomassa dalam bentuk pelet yang dikenal dengan istilah biopelet. Tujuan dari penelitian ini adalah mengetahui pengaruh ukuran partikel dan penambahan tapioka pada pembuatan biopelet kulit kakao, menentuka perlakuan optimal serta melakukan uji karakteristik fisik dan kimia biopelet kulit kakao. Metode yang digunakan adalah rancangan acak kelompok dengan dua factorial yaitu ukuran partikel biopelet dan variasi kadar perekat (tepung tapioka) untuk menentukan perlakuan optimal. Perlakuan optimal terjadi pada ukuran partikel biopelet 20 mesh dengan penambahan perekat tapioka 20% dengan kadar air 3.52%, kadar abu 6.99%, dan kerapatan 0.87 g/cm3 dan nilai kalor 3090.1 kal/g. Pengembangan penelitian dapat diarahkan kepada penambahan campuran bahan baku yang mempunyai nilai kalor tinggi sehingga dapat meningkatkan nilai kalor biopelet yang dihasilkan.Kata kunci: biopelet, kakao, kadar air, kadar abu, nilai kalor
PREDIKSI DISTRIBUSI PENCEMARAN AIR SUNGAI DAS BRANTAS HULU KOTA BATU PADA MUSIM HUJAN DAN KEMARAU MENGGUNAKAN METODE SPASIAL INVERSE DISTANCE WEIGHTED Novia Lusiana; Bambang Rahadi
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 12 No 2 (2018)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1793.669 KB) | DOI: 10.24843/EJES.2018.v12.i02.p10

Abstract

The diversity of activities along the Brantas watershed causes waste disposal, which contributes to an increase in pollution load in the Brantas watershed and a decrease in water quality. It is necessary to periodically monitor water quality changes, but the constraints faced are the high cost of sample testing. The solution that can be done is to predict changes in water quality through the neighborhood method to reduce the number of samples. The purpose of this study is to predict the water quality conditions spatially by using the Inverse Distance Weighted (IDW) method, especially in the watershed area of ??Batu Upper Brantas and find out the differences in the spread of pollution water in the conditions of the rainy and dry season, as the last output is to determine the water purification zone. The IDW method is able to visualize the spread of water pollution with distance-based interpolation calculations, where the advantages of IDW compared to other methods are that the calculations are at the minimum limit and the maximum limit of input values. The results obtained from this study were from 13 sampling points obtained 1 point experienced an increase in pollution status in the rainy season to dry season, namely from weight to moderate, 1 sample point that experienced changes in pollution status from mild to moderate, 7 points experienced a change in status from moderate to severe and 4 sample points experiencing changes in status from mild to severe. Branats River degradation zone upstream of Batu City at a distance of 2 km has experienced a decrease in DO during the rainy and dry season, the decomposition zone of Sunga Upper Brantas in Batu City is at a distance of 3 km to 6 km in the rainy season, and at a distance of 3-4 km dry season conditions , rehabilitation zone in the Brantas River in the Upper Batu City at a distance of 7 km to 8 km in the rainy season and at a distance of 5-11 km during the dry season and a re-purification zone, there was no purification zone at a distance of 11 km along the Brantas River in the Upper Batu City. Keywords : distribution, prediction, purification zone, water pollution
Co-Authors Bambang Rahadi Joko Prasetyo Retno Damayanti