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All Journal Jurnal Teknik Kimia Jurnal Ilmiah Universitas Batanghari Jambi Caraka Tani: Journal of Sustainable Agriculture BERDIKARI : Jurnal Inovasi dan Penerapan Ipteks SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Serambi Engineering JURNAL PENDIDIKAN TAMBUSAI Nusantara Science and Technology Proceedings International Journal of Eco-Innovation in Science and Engineering (IJEISE) Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Jurnal Indonesia Sosial Sains
Susilowati
Program Studi Teknik Kimia Universitas Pembangunan Nasional “Veteran” Jawa Timur
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Reducing Peroxide Value In Used Cooking Oil Using Ampo As An Adsorbent S. Susilowati; Khanza Lolita Astya; Ulinnuha Syaiful Bachri
International Journal of Eco-Innovation in Science and Engineering Vol. 2 No. 02 (2021): IJEISE
Publisher : Engineering Faculty, University of Pembangunan Nasional Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v2i02.35

Abstract

Cooking oil can only be used two or three times, more than that the oil is deemed unsuitable and can harm our health. The reason is, every time the cooking oil is used for frying, an oxidation reaction that is triggered by heat occured and causes the chemical chain bonds in cooking oil become unstable and forms hydroperoxides. The hydroperoxide found in used cooking oil increases the peroxide value. In which, the suitability of cooking oil is based on the peroxide value. In order to reduce the peroxide value in used cooking oil, in this study, Ampo is used as an adsorbent to adsorb the peroxide compound. The procedure used in this study includes a preliminary analysis of the used cooking oil to determine the initial peroxide value. After that, the Ampo adsorbent is activated with 1N Citric Acid to open the pores on the surface of the Ampo. Activated Ampo will then be mixed into 200 ml of used cooking oil with a magnetic stirrer with a stirring speed of 300 rpm and with a temperature of 50oC. The adsorption process was carried out by varying the mass variables of Ampo into 70, 75, 80, 85, and 90 grams, and stirring time of 30, 60, 90, 120, and 150 minutes. After the adsorption process is completed, the cooking oil that has been filtered by the Ampo adsorbent will be analyzed to get the final peroxide value. By knowing the peroxide value before and after the adsorption process, the adsorption isotherm can be calculated. The adsorption process of used cooking oil with Ampo adsorbent proved to reduce the peroxide value, in which stirring times and adsorbent masses were the influential variables in the study. The best result was obtained with 60 minutes stirring time and mass of 75 grams. This condition provided a peroxide value of 0.99 meq/kg, which means that there was a decrease in the peroxide value by 93%. This result is in accordance with the provisions of SNI 3741-2013, with a maximum peroxide value of 10 meq/kg. The maximum adsorption capacity in this study was obtained from the Freundlich equation of 14.6487 mg/gram
KAJIAN FERMENTASI KACANG TANAH DARI HASIL EKSTRAKSI MINYAK DENGAN CARA PENGEMPAAN Enny Karti Basuki Susiloningsih; Titi Susilowati
Caraka Tani: Journal of Sustainable Agriculture Vol 23, No 2 (2008): October
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1839.334 KB) | DOI: 10.20961/carakatani.v23i2.13966

Abstract

Research on changes in physico-chemical and functional properties of flour partially defatted peanut with R. oligosporus and R. oryzae were conducted. Before fermentation hull peanut was extracting the oil by hydraulic press. The experiment was arranged in completely randomized design in two times, treatment consisted of five fermentation duration (0, 8, 20, 22 and 24 hours) and two starter (R. oligosporus and R. oryzae). The result showed that R. oryzae grow faster than R. oligosporus and has gray black mycellium. Optimum time fermentations was 22 hours and fermented peanut flour by R. oligosporus has physico-chemical and functional properties better than R. oryzae.
The Role of Ampo As an Adsorbent for Reducing Peroxide Value in Used Cooking Oil Susilowati; Khanza Lolita Astya; Ulinnuha Syaiful Bachri
Nusantara Science and Technology Proceedings 5th International Seminar of Research Month 2020
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2021.0905

Abstract

In daily life, cooking oil has a very important role. Cooking oil itself has a usage limit. If the cooking oil has a rancid smell and turns brown, the cooking oil is not suitable for reuse. Naturally, cooking oil can only be used 2-3 times. To extend the life of cooking oil and improve its quality so that it can be reused, an adsorption process is carried out to adsorb harmful substances in used cooking oil. In this research, Ampo adsorbent is used which has the advantage of being environmentally friendly and edible. The procedures carried out in this study include the initial analysis of used cooking oil, activation of the Ampo as an adsorbent, the adsorption process by varying the mass of Ampo 70, 75, 80, 85, 90 grams and stirring time of 30, 60, 90, 120, 150 minutes and analysis of peroxide value on the adsorbed used cooking oil. The optimal condition of the research is that for the adsorption process using Ampo as adsorbent on used cooking oil, namely by stirring for 60 minutes and Ampo mass of 75 grams. This condition can reduce the peroxide value by up to 93%. While the maximum adsorption power of the Ampo adsorbent was obtained from the proving of the Freundlich isotherm equation theory with a value of 14,6487 mg/gram.
Crystallization of Barium Sulfate with Magnesium Chlorite and Calcium Chlorite Additives Novel Karaman; Susilowati; Gerri Adhit Fachriansyah; Reffi Allifyanto; A. P. Bayuseno
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2720

Abstract

Barium sulfate scale grew on industrial oil equipment make damaged either in injection or producing wells. A series of experiments were performed to estimate the precipitation rate of barium sulfate in laboratory equipment from brines containing the concentration of barium ions (3500 ppm) and varying concentrations of calcium and magnesium ions (10 and 20 ppm). Additionally, stirring speeds (240 and 480 rpm) affecting the crystallization of barium sulfate scales were also studied through kinetic analysis. At a certain stirring speed, the precipitation of the barium sulfate scale decreased since its solubility increased with increasing concentrations of Ca and Mg-cations, as indicated by changes in constant rate values. All solid crystals obtained from experiments contained mainly pure barite as validated by X-Ray Diffraction (XRD) method. The SEM micrograph for the morphology of barite showed particles with prismatic and tabular-shaped crystals on the order of 2 to 5 µm particles. The kinetic results provided a general reaction rate equation that can predict barium sulfate deposition in the reservoir for a given brine, supersaturation, and time durations of mixing.
Penerapan Pembangunan Berkelanjutan Melalui Perwujiudan Ecovillage di Desa Galengdowo Srie Muljani; Mu’tasim Billah; Farida Pulansari; Titi Susilowati
Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Vol. 2 No. 6 (2022): November 2022 - Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat
Publisher : Indonesian Scientific Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25008/altifani.v2i6.298

Abstract

Prioritas pembangunan desa berfokus pada upaya pencapaian Tujuan Pembangunan Berkelanjutan (TPB) atau SDGs. Untuk menerapkan TPB dengan mewujudkan Ecovillage di desa Galengdowo diperlukan pembenahan banyak sektor dan kegiatan sosialisasi. Sebagian besar mata pencaharian masyarakat Galengdowo adalah petenak sapi dan petani salak unggulan. Terjadinya cemaran sungai akibat pembuangan kotoran sapi dan menumpuknya limbah biogas di pekarangan rumah penduduk, selain menimbulkan aroma yang kurang sedap, rendahnya estetika, juga menimbulkan dampak penurunan kesehatan. Disisi lain terdapat juga timbunan limbah kulit dan biji salak di tempat wisata petik buah salak dan dibeberapa rumah petani salak. Selain produksi biogas dari kotoran sapi, maka limbah padat dari produksi biogas tersebut dapat diolah menjadi pupuk padat dan pupuk cair. Kegiatan pengabdian mayarakat di desa Galengdowo yang dilakukan ini meliputi pemurnian biogas, pembuatan pupuk organic dan produksi teh serta kopi biji salak sebagai upaya mewujudkan Galendowo sebagai ecovillage.  
Pemanfaatan Limbah Jerami Padi dalam Pembuatan Edible Film (Kajian Penambahan Lignin dan Sorbitol) Ringgo E. P. Putra; Cakrasena R. Santoso; Titi Susilowati
Jurnal Indonesia Sosial Sains Vol. 4 No. 02 (2023): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jiss.v4i02.782

Abstract

Rice straw is a very abundant lignocellulose agricultural waste in Indonesia. This waste is generally used as much as 31% for animal feed, 7% for industrial purposes, and 62% burned in rice fields. This burning can cause respiratory disorders such as ARI and cancer. Lignocellulose itself is a polysaccharide consisting of lignin, cellulose, and hemicellulose. The lignin content in rice straw can be used for the production of edible film, so as to increase its usefulness and reduce the percentage of incineration of this waste in rice fields. Edible film is a thin layer made from edible materials and laid between food components. The main components constituting edible film are hydrocloids/lipids/composites, fillers, and plasticizers. The use of the addition of a plasticizing agent is to make edible film elastic. The use of this filler is to modify the edible nature of the film you want to produce. Examples of oligomeric substances and fillers are sorbitol and lignin. In this study, sorbitol and lignin materials were added to cellulose biomass materials derived from rice straw. These materials are stirred using a magnetic stirrer at a speed of 400 rpm and a temperature of 65oC for 25 minutes before the mixture is printed on a glass plate. After the edible film is printed and dried, an analysis of tensile strength and degradation of the edible film is carried out. The results showed a decrease in the tensile strength value of edible film with the lowest downward trend in the addition of 3% lignin lignin and 9 ml sorbitol. The results of the % degradation analysis show that the value of % degradation tends to increase without the addition of lignin.
Analisis Permodelan Penyebaran Polutan Udara di Jalan Margomulyo dan Jalan Gerges Barat Kota Surabaya Faisal Dimas Arifiansyah; Susilowati Susilowati; Novirina Novirina
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.6034

Abstract

Terdapat beberapa gas yang dapat mencemari udara diantaranya gas nitrogen dioksida (NO2), sulfur dioksida (SO2) dan karbon monoksida (CO). Nitrogen dioksida (NO2) merupakan polutan udara ambien bersama unsur nitrogen monoksida (NO) yang biasanya dihasilkan dari kegiatan manusia seperti pembakaran bahan bakar mesin kendaraan, pembakaran sampah serta pembakaran batubara dan industri. Pada jalan raya kawasan industri Kalianak Surabaya dilalui berbagai macam kendaraan bermotor yang menimbulkan pencemaran akibat pembakaran bahan bakar kendaraan bermotor, terutama pada waktu pagi hari. Gas pencemar yang timbul akibat pembakaran bahan bakar kendaraan bermotor yang paling dominan adalah karbon monoksida (CO). Konsentrasi udara ambien karbon monoksida yang tertinggi terletak pada titik 1, tanggal 19-08-2022 Sore dengan nilai 14.652,09 µg/m3 dan memiliki nilai konsentrasi terendah pada titik 3 tanggal 17-08-2022 Pagi sebanyak 3.125,98 µg/m3. Konsentrasi udara ambien nitrogen oksida yang tertinggi terletak pada titik 1, tanggal 19-08-2022 Sore dengan nilai 405,02 µg/m3 dan memiliki nilai konsentrasi terendah pada titik 3 tanggal 17-08-2022 Pagi sebanyak 60,45 µg/m3.
Penggunaan Video Animasi Pembelajaran bagi Guru Sekolah Dasar Mu’tasim Billah; Titi Susilowati; Fransisca Asteria Nandra Febiola; Rina Yulianti; Rachmad Ramadhan Yogaswara; Nove Kartika Erliyanti; Erwan Adi Saputro
Berdikari: Jurnal Inovasi dan Penerapan Ipteks Vol 11, No 1 (2023): February
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/berdikari.v11i1.11427

Abstract

The Covid-19 (Coronavirus Disease 2019) pandemic has had some effect on the development of children's education because they have to learn independently online. Online learning is a big challenge for schools, teachers, and parents because they are required to be able to manage and design learning media to achieve learning goals and prevent student boredom during online learning. This article describes one of the learning media for elementary school students by making animated videos that can be easily understood. The goal was to provide learning methods to attract students' interest in online learning during the pandemic. This learning model emphasized visualization and summary explanation of the material. Community service partners, in this case, are teachers at SD Sumberwindu I, Tanjung Anom District, Nganjuk Regency, and 5th-grade students. Activities are carried out by identifying school problems and training in making animated videos. While using the animated video, the learning purpose will be easy to achieve. This also increases the motivation of the students to be more active in learning by their shelf and seeking new knowledge related to the video. In this community service, we introduced learning materials in the form of animated videos and uploaded them to a YouTube channel. Those videos can be accessed either by teachers or students. This learning model was well-received and well-appreciated by the teachers and students.
Pemanfaatan Limbah Kulit Pisang Kepok Sebagai Bioadsorben pada Penurunan Warna Minyak Bekas Penggorengan Siti Widayana; Ita Kurniawati; S. Susilowati
Jurnal Pendidikan Tambusai Vol. 6 No. 2 (2022): Agustus 2022
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (325.765 KB)

Abstract

Pada penelitian ini dilakukan dengan memanfaatkan limbah kulit pisang kepok sebagai bioadsorben karena memiliki kandungan selulosa dan lignin yang kecil sebesar 6-12%. Tujuan penelitian ini adalah untuk menurunkan warna pada minyak bekas penggorengan dengan bioadsorben dari limbah kulit pisang kepok dengan proses adsorpsi. Proses adsorpsi minyak bekas penggorengan diawali dengan aktivasi kimia bubuk kulit pisang kepok dengan larutan C6H8O7 2N 3500 ml hingga pH 4. Setelah itu, dilakukan penyaringan dan dikeringkan. Selanjutnya bioadsorben kulit pisang yang telah diaktivasi sebesar: 30; 50; 70; 90; 110 gram dimasukkan ke dalam Beaker Glass masing-masing berisi minyak goreng bekas penggorengan 350 ml serta dilakukan pengadukan dengan waktu 30; 60; 90; 120; 150 menit lalu disaring. Hasil yang diperoleh yaitu minyak goreng dengan penurunan warna terbaik didapatkan pada massa adsorben 110 gram dengan waktu pengadukan 150 menit mempunyai hasil penurunan warna sebesar 10 NTU. Persamaan isoterm adsorpsi penurunan warna pada minyak bekas penggorengan yang terpilih adalah isoterm Freundlich dengan nilai R2 masing-masing sebesar 0,9202 dan 0,9552. Hal ini menandakan bahwa lapisan yang terbentuk adalah lapisan multilayer dengan nilai R2 sebesar 0,9552.
Pemanfaatan Limbah Sabut dan Tempurung Kelapa Sawit sebagai Silica Gel Arbiter Khalida Bramanta; Dewa Made Adit Prasetia; Susilowati Susilowati
Jurnal Ilmiah Universitas Batanghari Jambi Vol 23, No 2 (2023): Juli
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jiubj.v23i2.3328

Abstract

The increase in the area of oil palm in Indonesia also causes an increase in the amount of palm oil waste. Waste in the form of coir and palm shells is thrown away. While the content of silica (SiO2) in both materials is feasible to be utilized. Silica gel is a form of utilization of oil palm coir and shells. The results of X-Ray Fluorescence (XRF) analysis showed that the silica (SiO2) content in palm coir ash was 27.5%, while 36.10% was in palm shell ash. Silica gel is an adsorbent produced by the sol-gel method, namely the formation of a gel derived from precursor compounds. The precursor compound in the formation of silica gel is sodium silicate solution (Na2SiO3) which is produced from the extraction process of coir ash and palm shells using sodium hydroxide (NaOH) solvent. The concentration of NaOH used varied, namely 1, 3, 5, 7, and 9 M. The aging times used for the formation of silica gel also varied, namely 4, 8, 12, 16, and 20 hours. Dry silica gel with the highest quantity of 5.4115 grams was obtained by adding NaOH with a concentration of 9 M and a aging time of 20 hours. While the silica gel which has the most suitable water content and Fourier Transform Infra Red (FTIR) graphic pattern with Kiesel Gel 60 G is silica gel resulting from the addition of 3M NaOH with a aging time of 8 hours. However, the results of the Structural Equation Modeling (SEM) analysis of silica gel showed results that were not in accordance with silica gel in general.
Co-Authors A. P. Bayuseno Arbiter Khalida Bramanta Caecilia Pujiastuti Cakrasena R. Santoso Dewa Made Adit Prasetia Djarwatiningsih Djarwatiningsih Dyah Suci Perwitasari Enny Karti Basuki Susiloningsih Erliyanti, Nove Kartika Erwan Adi Saputro Faisal Dimas Arifiansyah Farida Pulansari Fransisca Asteria Nandra Febiola Gerri Adhit Fachriansyah Ita Kurniawati Ketut Sumada Khanza Lolita Astya Khanza Lolita Astya Khanza Lolita Astya Kindriari Nurma Wahyusi Mu'tasim Billah Mu’tasim Billah Novel Karaman Novirina Hendrasarie Reffi Allifyanto Renova Panjaitan Rina Yulianti Ringgo E. P. Putra Safira, Lutfia Rima Sandy Buana Putra Setiani, Astri Siswanto Moenandar Siti Widayana SRIE MULJANI Ulinnuha Syaiful Bachri Ulinnuha Syaiful Bachri Ulinnuha Syaiful Bachri Yogaswara, Rachmad Ramadhan