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All Journal Madani: Multidisciplinary Scientific Journal AGROINOTEK
Ramadhan, Rafli Rizki
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Redesign of A Cake Batter Mixing Machine Using A Stepped Pulley Ramadhan, Rafli Rizki; Riandadari, Dyah; Wulandari, Diah; Sofi, Nurul Ainu
Madani: Jurnal Ilmiah Multidisiplin Vol 4, No 1 (2026): February 2026
Publisher : Penerbit Yayasan Daarul Huda Kruengmane

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.18507000

Abstract

One of the key elements in making high-quality sponge cake batter is consistent and precise mixing, ensuring all ingredients are well-blended and producing the air bubbles necessary for softness. The aim of this machine redesign was to overcome the limitations of the previous design by using a multi-stage pulley. By redesigning the machine, it can be tailored to more specific operational needs, improve product quality, and minimize wasted time. To achieve this goal, the sponge cake mixer, which previously used a fixed-size pulley system, was updated to be more efficient in regulating rotation speed. Therefore, research was conducted by replacing the pulley size variations with a 5-inch diameter with 840 rpm, 6 inches with 700 rpm, and 7 inches with 600 rpm. During the testing process, the dough was mixed and the time required until the dough was ready was recorded.Based on the results of the trial using a multi-level pulley, it was found that the average time for mixing sponge cake batter with a 5-inch pulley produced an average time of 37 minutes, while a 6-inch pulley produced an average time of 46 minutes, and for a 7-inch pulley produced an average time of 55 minutes. A 5-inch diameter pulley is the appropriate size for use in a redesigned sponge cake batter mixer machine because it produces the fastest mixing time, which is an average of 37 minutes, with a rotation speed of 840 rpm. This pulley size is able to increase the efficiency of production time without reducing the quality of the dough mixing results
Pengelolaan Limbah Cair dari Sisa Proses Produksi Rokok di WTC (Water Treatment and Composting Plant) PT. Djarum Oasis Hadiwijoyo, Erekso; Ramadhan, Rafli Rizki
AGROINOTEK Jurnal Penelitian dan Pengabdian Masyarakat Vol. 5 No. 1 (2024)
Publisher : Fakultas Pertanian Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.agroinotek.2024.005.01.02

Abstract

ABSTRAKLimbah merupakan bahan sisa produksi dari suatu kegiatan yang dilakukan oleh aktivitas manusia. Limbah dapat berdampak negatif terhadap lingkungan dan manusia jika tidak dikelola dengan baik. Proses produksi rokok menghasilkan limbah yang tidak sedikit. Limbah industri yang tidak dikelola dengan baik akan menyebabkan pencemaran terhadap lingkungan, pencemaran tersebut akan merusak keseimbangan lingkungan. Perlu adanya usaha dalam melakukan pengelolaan limbah yang dihasilkan oleh industri. Upaya yang dilakukan dalam mengurangi dampak negatif tersebut, PT. Djarum Oasis memiliki unit pengolahan limbah cair yang disebut WTCP. Pelaksanaan kegiatan dilaksanakan pada bulan Juli hingga September 2024. Kegiatan tersebut menggunakan metode observasi, wawancara, dan pustaka. Water Treatment and Composting Plant merupakan unit pengolahan air limbah. Kegiatan pengolahan mulai diproses pada penampungan di domestic tank untuk limbah air domestik dan turbo coagulator untuk limbah proses. Air yang ada dilakukan pengolahan pada pengolahan yaitu oxidation ditch yang memanfaatkan lumpur aktif dengan bakteri aerob. Kemudian dialirkan ke sedimentation tank untuk pengendapan dan clarifier tank untuk proses penjernihan. Endapan yang dihasilkan akan diolah menjadi vermikompos. Proses pengolahan limbah yang dilakukan di WTCP telah berjalan dengan baik mengingat semua parameter yang diuji pada uji analisis telah memenuhi standar baku mutu yang ditetapkan melalui Peraturan Pemerintah No. 82 Tahun 2001.
Co-Authors Diah Wulandari Dyah Riandadari Erekso Hadiwijoyo Sofi, Nurul Ainu