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All Journal Tesa Arsitektur Jurnal Inovasi Teknik Kimia Equilibrium Journal of Chemical Engineering PROFICIO: Jurnal Pengabdian Masyarakat Jurnal Akademik Pengabdian Masyarakat Jurnal Pengabdian Cendekia
Ari Diana Susanti
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Journal : Equilibrium Journal of Chemical Engineering

 1 
Application of Biogas Production Technology from Various Feedstocks on Small-Medium-Micro Enterprises: A Case Study Ari Diana Susanti; Cornelius Satria Yudha; Leader Firstandika; Paryanto Paryanto; Wusana Agung Wibowo
Equilibrium Journal of Chemical Engineering Vol 2, No 2 (2018): Volume 2 No 2 July 2018
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v2i2.40433

Abstract

Biogas production process is an alternative method to reduce dependency on non-renewable fossil-based energy consumption and also can reduce greenhouse gases production both domestically and industrially. The existing biogas technology is suitable to be adapted in small-micro-medium enterprises and domestics, specifically for those who raise cattle. The case study was performed by observation of biogas production with various wastes as feed, namely cow dung, quail manure, and wastewater of tofu production. The study conducted via direct interviews with stake holders and visitations to the instalations. Based on our observation, biogas production from cow dung exhibits the shortest retention time compared to the others, aside from the value of C/N ratio of the biogas feedstocks. The presence of biogas production installations are significantly reducing the energy supplies among the users. Beside as biogas product, the instalations also produce solid and liquid fertilizers as by-products and have relatively high economic value. Socio – engineering problems based on the application of biodigester are also studied.
Mathematical Modelling of Micronutrient Recovery from Vegetable Oil by Silica-based Adsorption: Vitamin E from Palm Fatty Acid Distillate Ari Diana Susanti; Wahyudi Budi Sediawan; Sang Kompiang Wirawan; Budhijanto Budhijanto
Equilibrium Journal of Chemical Engineering Vol 1, No 1 (2017): Volume 1 No 1 January 2017
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v1i1.40363

Abstract

Mathematical modelling on kinetics of batch adsorption of vitamin E separation from palm fatty acid distillate (PFAD) has been set-up and then applied for literature experimental data. Since the sizes of adsorbent particles used are usually relatively small, the concentration in the particles is assumed to be uniform. Hence, the adsorption rate is controlled by the rate of solute mass transfer from the bulk fluid to the surface of particles. In this model, the rate of mass transfer is assumed to be proportional to the concentration deviation from the equilibrium state. Meanwhile, the equilibrium models applied were coefficient distribution, Freundlich, and  Langmuir with  the  values  of  the  parameters obtained from literature data. It turned out that the model set-up can quantitatively describe the experimental kinetics data from literature. The value of mass transfer coefficient per unit adsorbent mass (kca) is obtained by curve fitting. It is also observed that the model proposed quantitatively describes the batch adsorption process well. The three equilibrium models applied are suitable for the mathematical modelling. Adjustment of the values of equilibrium isotherm parameters from literature significantly improves the accuracy of the model.
Optimization of Cow’s Milk Processing into Milk Soap Bar on Small-Medium-Micro Enterprises (UMKM) Ari Diana Susanti; Sulistyo Saputro; Wusana Agung Wibowo
Equilibrium Journal of Chemical Engineering Vol 2, No 2 (2018): Volume 2 No 2 July 2018
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v2i2.40435

Abstract

The quality and quantity of cow’s milk produced were determined by the genetic, food, age, milking processing, and the treatment of cattle. The storability of fresh cow's milk tends to be short. Therefore, it is necessary to find ways to extend the life time of fresh cow's milk, one of which is by processing fresh cow's milk into other products, such as milk soap bar. The purpose of this study was to determine the appropriate method of milk soap bar production in home industries capacity and to formulate composition of vegetable oils and fresh cow's milk. The milk soap bar obtained then was analyzed in several laboratory tests such as acidity test (pH), moisture content, free alkaline content, and foam stability. Based on the research, it is turned out that the appropriate method of milk soap bar production was the cold process. The optimum formula is olive oil (11%), coconut oil (22%), palm oil (22%), fresh cow's milk (33%), and NaOH pellets (12% - equivalent to 9.2 N). The free alkaline content will decrease according the curing time. Simpler economic evaluation obtained that the production cost of milk was Rp.6,711.22/package of 80 grams of milk soap bar. Milk soap bar  is sold for Rp. 7,000.00 will provide 87.96% after-tax of ROI, 11.7– month of POT, and 65.31% of BEP.
Penentuan Pelarut untuk Adsorpsi Oryzanol dari Minyak Bekatul dengan Investigasi Kromatografi Lapis Tipis (Thin Layer Chromatography) Ari Diana Susanti; Wahyudi Budi Sediawan; Sang Kompiang Wirawan; Budhijanto Budhijanto
Equilibrium Journal of Chemical Engineering Vol 1, No 2 (2017): Volume 1 No 2 July 2017
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v1i2.40424

Abstract

Oryzanol yang terkandung dalam minyak bekatul mempunyai kekuatan antioksidan lebih  tinggi  daripada vitamin E  dan  terbukti  mempunyai efek hipokolesteromik sehingga berguna untuk kesehatan jantung dan pembuluh darah. Metode adsorpsi menggunakan adsorben silika merupakan salah satu metode isolasi oryzanol yang menjanjikan. Keberhasilan proses pemungutan oryzanol sangat ditentukan oleh pemilihan pelarut yang digunakan karena oryzanol merupakan senyawa ester sehingga sifatnya mirip dengan sifat trigliserida minyak bekatul yang ingin dipisahkan darinya. Oleh karena itu perlu ditentukan pemodifikasi pelarut sehingga diperoleh campuran pelarut yang cocok untuk proses tersebut. Modifikasi dilakukan terhadap pelarut utama n-heksana dan pemodifikasi potensial yang digunakan adalah etil asetat, diklorometana, kloroform, dan aseton. Performa campuran pelarut diuji menggunakan metode kromatografi lapis tipis (thin layer chromatography - TLC) menggunakan plat TLC silika gel grade 60. Hasil penelitian menunjukkan  kombinasi  n-heksana/aseton  =  85/15  memberikan  hasil  pemisahan oryzanol terbaik, sedangkan kombinasi    n-heksana/etil asetat = 90/10 patut dipertimbangkan apabila elusi secara gradien dipilih dalam proses pemisahan.
Co-Authors Aliyah Ardhian Az Zahra Ancelin Aloysia Prasetyo Aulia Anisa Az-Zahra Budhijanto Budhijanto Budhijanto Budhijanto Cornelius Satria Yudha Deviana Nurhuda Firstandika, Leader Gergorius Francisco Kalya Salsabila Laksmi Aliyya Wismayadewi Luthfi Alfath Nursalam Marcella Dhika Aprilia Muhamad Iqbal Nadhifah Bayu Sukma Najwa Shahzaadee Firdaus Nilam Firmandayu Paryanto Paryanto Paryanto Paryanto Pembayun Rifyan Raya Badrid Dujaa Putranto, Anggoro Bimo Resya Falisha Sang Kompiang Wirawan Satria Lafadz Wicaksana Sava Waroha Sasikirana Haq Shofia Luthfi Dzulfahmi Silfia Mona Aryani Soepono Sasongko Suci Auliyya Alfir Sulistyo Saputro Sunu Herwi Pranolo Wahyudi Budi Sediawan Wahyudi Budi Sediawan Wisnu Suryo Negoro Wusana Agung Wibowo, Wusana Agung Zada Utama