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All Journal International Journal of Advances in Applied Sciences Jurnal Ilmu Pendidikan Sainstek Jurnal Pendidikan Sains Jurnal Ilmiah Hukum dan Dinamika Masyarakat The Journal of Pure and Applied Chemistry Research Jurnal Kimia dan Kemasan Jurnal IPTEK Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan J-PEK (JURNAL PEMBELAJARAN KIMIA) JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Chemistry Indonesian Journal of Chemical Research Referensi : Jurnal Ilmu Manajemen dan Akuntansi Jurnal Pembelajaran Sains Jurnal Karinov Stannum : Jurnal Sains dan Terapan Kimia Indonesian Journal for Social Responsibility Jurnal Graha Pengabdian Jurnal Kimia dan Kemasan Jurnal Ilmiah Ibnu Sina (JIIS): Ilmu Farmasi dan Kesehatan Journal of Engineering Science and Technology Jurnal Teknik Kimia dan Lingkungan Politika Progresif : Jurnal Hukum, Politik dan Humaniora Innovation for Community Service Journal Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS) Jurnal Akademika Kimia

Aman Santoso

Universitas Negeri Malang

Author-ID : 370793

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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OPTIMASI SINTESIS DAN KARAKTERISASI SABUN CAIR DARI KEMIRI (Aleurites moluccana) DENGAN BANTUAN GELOMBANG ULTRASONIC Aman Santoso Santoso; Syafiuddin Syafiuddin; Dedek Sukarianingsih; Sumari Sumari; Rini Retnosari
Jurnal Ilmiah Ibnu Sina (JIIS): Ilmu Farmasi dan Kesehatan Vol 6 No 1 (2021): JIIS
Publisher : Sekolah Tinggi Ilmu Kesehatan ISFI Banjarmasin

Liquid soap has become a basic necessity, especially during the Covid pandemic. The quality of soap is influenced by the type of raw material used. Candlenut oil saponification with potassium hydroxide produces liquid soap which has the potential to be anti-bacterial. Ultrasonic waves (US) produce cavitation which speeds up the reaction. This study aims: (1) Synthesis and characterization of liquid hazelnut oil soap, (2) to determine the antibacterial activity of liquid soap. The stages in this study were: (1) isolation and characterization of hazelnut oil, (2) making liquid soap at various alkaline concentrations with US (3) characterizing liquid soap (4) testing for antibacterial activity. The results showed that liquid soap can be made by saponification with KOH hazelnut oil, obtained physical properties of viscous liquid form, yellowish white color, distinctive aroma. The chemical properties of liquid soap have a pH of 8.46, a density of 1.10 g/mL, a free fatty acid content of 0.34%, a free alkaline content of 0.05%, a viscosity of 1,460 cSt and a surface tension of 4.33 x 10-4 N/m. Candlenut liquid soap has antibacterial activity in the weak category against E. coli bacteria and in the moderate category against S. aureus bacteria

KUALITAS PELAYANAN INSTITUSI PENDIDIKAN TERHADAP KEPUASAN SISWA SMK NEGERI 4 MALANG Aman Santoso; Widi Dewi Ruspitasari; Moh. Bukhori
Referensi : Jurnal Ilmu Manajemen dan Akuntansi Vol 9, No 2 (2021)
Publisher : Unitri Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/ref.v9i2.1828

This study aims to determine how the service quality of educational institutions on student satisfaction at SMK Negeri 4 Malang. The sample that has been used were all students of class XI SMKN 4 Malang taken through a total sampling technique in order to obtain 260 students. Collec ted data through observation, interviews and questionnaires by testing the quality of service through five variable indicators, namely tangible, reliability variable, responsiveness variable, assurance variable, and empathy variable using Likert scale. The results of this study was indicate that the tangible, reliability and responsiveness variables have a negative and insignificant ef fect, while the assurance and sympathy variables have a positive influence on student satisfaction at SMKN 4 Malang. This is because the guarantee is able to provide feedback to students by providing trust and a sense of security, while the empathy variable is able to provide a sense of comfort in understanding the needs of students so that they can provide service satisfaction for SMKN 4 Malang students in these two aspects.

Program Pembinaan Intensif Guru Pembina dan Siswa Ekstrakurikuler KIR di SMP/MTs Kabupaten Malang Berbasis Hasil Penelitian M Muchson; Aman Santoso; Irma Kartika Kusumaningrum; Deni Ainur Rokhim
Aksiologiya: Jurnal Pengabdian Kepada Masyarakat Vol 6, No 2 (2022): Mei
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/aks.v6i2.4623

Kegiatan pendampingan masyarakat dalam pengembangan perencanaan Masjid Al-Barkah di Cipedak, Ciganjur, Jakarta Selatan ini merupakan kegiatan pengabdian pada masyarakat yang dilakukan oleh Program Studi Arsitektur, Fakultas Teknik, Universitas Muhammadiyah Jakarta. Kegiatan ini merupakan salah satu bentuk kepedulian Program Studi Arsitektur FT UMJ dalam upaya meningkatkan kualitas dan kemampuan masyarakat baik dalam menentukan keputusan dalam hal ini sebagai pemegang keputusan, maupun kemampuan dalam menerjemahkan sebuah kebutuhan ke dalam skematis desain. Pelaksanaan kegiatan ini bertujuan untuk mendampingi masyarakat khususnya para pengurus masjid dan pemangku keputusan di dalam masyarakat dalam memberikan solusi desain pada perencanaan pengembangan bangunan masjid yang semula hanya satu lantai menjadi dua lantai. Kegiatan pendampingan ini dilakukan dalam tiga tahapan kegiatan, tahap pertama meliputi observasi lapangan, kegiatan kedua berupa diskusi kelompok antar warga dan pengurus masjid dalam menentukan kebutuhan dan memberikan keputusan-keputusan terkait desain pengembangan dan tahap terakhir adalah eksekusi dari desain pengembangan perencanaan Masjid Al-Barkah yang dibantu oleh para mahasiswa Program Studi Arsitektur FT UMJ. Hasil akhir dari kegiatan pendampingan masyarakat ini diharapkan dapat memberikan pembelajaran bagi masyarakat dalam menentukan keputusan terkait dengan desain sesuai kebutuhan pengguna dalam hal ini tentunya masyarakat sekitar Masjid Al-Barkah.

CRITICAL THINKING SKILLS AND THEIR RELATIONSHIP WITH THERMOCHEMICAL LEARNING OUTCOMES OF GRADE 11TH STUDENTS Peter Juvenaris Manek; Aman Santoso; Muntholib Muntholib
Jurnal Pembelajaran Sains Vol 5, No 2 (2021)
Publisher : Prodi Pendidikan IPA FMIPA Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um033v5i2p83-90

Critical thinking skills are key cognitive skills that include interpretation, analysis, evaluation, inference, explanation, and self-regulation. Thermochemistry topics include knowledge (products of science) and science process skills that to learn them require critical thinking skills. In addition, this topic can also be used to develop critical thinking skills. The purpose of this study was to analyze the critical thinking skills of grade 11 students and their relationship with their thermochemical learning outcomes. This study applies a correlational descriptive research design. The subjects of this study were 266 grade 11 students of SMAN 2, SMAN 8, and SMAN 9 Malang. Data collection is carried out using tests. This research instrument was developed by the researcher himself. The critical thinking skills test on Thermochemistry consists of 10 valid essay questions with a Cronbach Alpha coefficient of 0.82, while the thermochemical learning outcomes test consists of 15 valid multiple-choice questions with a Cronbach Alpha coefficient of 0.74. The results showed that the average score of students' thermochemical critical thinking skills was 67.64% and the average score of students' thermochemical learning outcomes was 76.19%. Correlation analysis using Spearman Rank Correlation showed that these two study variables were significantly correlated [sig. (2-tailed) 0.00 < 0.01] and in the direction of medium strength [relationship strength +0.261]. This shows that students who have good critical thinking skills tend to have learning outcomes as well and vice versa.

Sono-hydrolysis of banana stem midrib using HY-zeolite from natural sand-based silica as a catalyst Sumari Sumari; Aman Santoso; Muhammad Roy Asrori; Yana Fajar Prakasa; Dinar Rachmadika Baharintasari
International Journal of Advances in Applied Sciences Vol 11, No 4: December 2022
Publisher : Institute of Advanced Engineering and Science

Banana stem midrib has the potential as a glucose source through catalytic hydrolysis assisted by ultrasonic (sono-hydrolysis). Besides, natural sand-based silica is the potential as raw material for zeolite synthesis. The purpose of the study was to do two things: i) characterize HY-zeolite made from natural sand-based silica and ii) determine whether HY-zeolite is effective for sono-hydrolysis of banana stem midrib. There was a total of four processes that were carried out, including i) the extraction of silica, ii) the synthesis of HY zeolite, iii) the hydrolysis process, and iv) the glucose content test. The results of the study were gained two things: i) The findings of X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR) on HY-zeolite are 2.3 Si/Al, obtained 2 theta and d-spacing data similarities for HY-zeolite, and formed T-O-T, O-T-O (T=Si/Al), and Si-OH groups respectively; and ii) HY-zeolite with ultrasonic was effective for hydrolyzing cellulose into glucose at maximum temperature and time, 55 °C and 6 hours.

Silica extract from Malang beach sand via leaching and sol-gel methods Sumari Sumari; Muhammad Roy Asrori; Yana Fajar Prakasa; Dinar Rachmadika Baharintasari; Aman Santoso
International Journal of Advances in Applied Sciences Vol 12, No 1: March 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v12.i1.pp74-81

Many silica minerals are found in beach sands. One of its beach sands is in Bajul Mati beach sand which contains high silica. The silica can be extracted using existing methods, but it is less environmentally friendly. In this research, the extracting process of silica from the sand of Bajul Mati beach (South of Java-Indonesia) has been carried out through a method that is low-cost and more environmentally friendly. The purpose of this study was to characterize extracted silica with instrumentation results and economic analysis. The method of extracting silica from beach sand was via leaching and sol-gel methods: i) leaching with 7M HCl,ii) the formation of clear sodium silicate solution (Na2O.SiO2),iii) sol-gel: sodium silicate solution titrated with oxalic acid (H2C2O4) 1 M until pH 6 was obtained and silicite Si(OH)4 was formed, and iv) characterization with X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and scanning electron microscopy (SEM) with economic analysis. The result showed that extracted silica has a cristobalite structure based on XRD analysis. The purity of silica (% Wt Si) reached 93.9% based on XRF analysis. FTIR analysis has identified silanol, siloxic, and siloxane groups. The SEM analysis shows that silica (SiO2) particles tend to form agglomerations about ∼1 μm. In addition, economic analysis results showed that this method will support implementation in the future, so silica has been produced by this developed method.

Karakterisasi Metil Ester Dari Minyak Biji Bunga Matahari dan Minyak Zaitun di Bawah Katalis KOH Aman Santoso; Muhammad Roy Asrori; Sumari Sumari; Andyka Medarda Pradana
Journal of Engineering Science and Technology Vol. 1 No. 1 (2023): January
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jesty.v1i1.5

Fatty acid methyl esters can be obtained from the synthesis of vegetable oil with methanol using a base catalyst. Vegetable oil has potential as biodiesel feedstock, the methyl ester character of various vegetable oils is different, for example from sunflower seed oil and olive oil. The synthesis of methyl esters by conventional transesterification reactions generally takes 1-2 hours. The purpose of this study was to synthesize methyl esters from sunflower seed oil and olive oil with a KOH catalyst and to determine the yield and its characteristics. This research is a type of laboratory experimental research. The research was carried out in 3 stages which included (1) determination of the free fatty acid content (ALB) of the oil, (2) transesterification of the oil with methanol and potassium hydroxide as a catalyst, and (3) characterization of the synthesized methyl ester which included density, viscosity, and number. acid. The results showed that the yield of methyl esters synthesized by transesterification reaction of sunflower seed oil was 95.61% and the yield of methyl esters synthesized by transesterification reaction of olive oil was 95.09.%. The methyl ester characters synthesized from sunflower seed oil are, density of 0.906 g/mL, viscosity of 5.035 cSt, acid number of 1.21 g KOH/g. The methyl ester characters synthesized from olive oil by transesterification reaction are density of 0.909 g/mL, viscosity of 12.203 cSt, acid number of 0.629 g KOH/g.

Pengaruh Gelombang Ultrasonik pada Pembuatan Sabun Transparan dari Minyak Kelapa (Cocos nucifera) dan Minyak Ayam (Gallus domesticus) Aman Santoso; Rohman Fantusi; Siti Marfu’ah; Sumari Sumari
Jurnal Teknik Kimia dan Lingkungan Vol. 5 No. 1 (2021): April 2021
Publisher : Politeknik Negeri Malang

Transparent soap is synthesized from vegetable oils with alkaline bases through the saponification reaction with the addition of a transparent agent. The different material characteristics of coconut oil (Cocos nucifera) and chicken oil (Gallus domesticus) have the potential to produce unique transparent soap. Ultrasonic wave cavitation homogenizes the mixture and accelerates the reaction rate. The purpose of this research is to synthesize transparent soap from coconut oil and chicken oil and compared the soap produced using ultrasonic waves and with soap from the heating method. This experimental laboratory research was carried out with the stages of preparation and characterization of coconut oil and chicken oil, followed by saponification of coconut oil and chicken oil accompanied by ultrasonic waves. Characterization of the synthesized transparent soap. The results in this study indicate that soaps made from coconut oil are more transparent than those made from chicken oil, and soaps made with ultrasonic waves are more transparent than those made by normal heating. The ultrasonic transparent soap character of coconut oil has a moisture content of 22.02%, the non-saponified fraction 1.01%, insoluble part of alcohol by 1.79%, free alkaline by 0.04%, pH 9.35, and this is in accordance with SNI for soap except for its water content. Meanwhile, ultrasonic soap from chicken oil has a moisture content of 23.26%, non-saponified fraction 5.57%, the insoluble portion of alcohol was 4.69%, free alkaline 0.12%, pH 9.60, this is not in accordance with SNI soap. The soap produced by the ultrasonic method with coconut oil has the best character and has the most compatibility with SNI for solid soap.

Pelatihan Pembuatan Hand Sanitizer bagi Takmir Masjid Nurul Huda untuk Mencegah Penyebaran COVID-19 Yana Fajar Prakasa; Sumari Sumari; Aman Santoso; Muhammad Roy Asrori; Sinta Nur Laila
Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS) Inovasi IPTEKS untuk Meningkatkan Peran Serta Masyarakat Menuju Indonesia Mandiri
Publisher : Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS)

Show Abstract | Download Original | Original Source | Check in Google Scholar

COVID-19 yang kini menjadi pandemi global membuat banyak orang melakukan tindakan preventif. Salah satu cara untuk mencegahnya yaitu mencuci tangan menggunakan sabun dan menggunakan hand sanitizer. Tujuan pelatihan ini untuk memberikan pengetahuan kepada masyarakat tentang cara pembuatan hand sanitizer pada masa pandemic COVID-19. Mitra pada kegiatan pengabdian ini adalah Takmir Masjid Nurul Huda Kota Blitar. Karenaketerbatasan hand sanitizer serta untuk memanfaatkan waktu di rumah, masyarakat dapat membuat hand sanitizer sendiri. Kegiatan pelatihan ini dilakukan dengan tiga tahapan, yaitu persiapan, pelaksanaan, dan evaluasi. Hasil dari kegiatan ini menunjukkan bahwa mitra kegiatan ini mampu membuat hand sanitizer sendiriKata kunci : COVID-19, Hand Sanitizer, Masjid, Takmir

Pengolahan Limbah Serat Fiber sebagai Substitusi Material Pengisi Media Tanam Organik di Mitra WBS Fiberglass Poncokusumo Asrori, Muhammad Roy; Santoso, Aman; Sumari, Sumari; Prakasa, Yana Fajar; Mahmudah, Siti Nur
Indonesian Journal for Social Responsibility Vol. 5 No. 01 (2023): June 2023
Publisher : LPkM Universitas Bakrie

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36782/ijsr.v5i01.177

Micro-enterprises in the community still need a helping hand in the form of a service program from the campus. It is known that the micro-enterprise community belongs to the lower middle class, so there is still a lack of interest in seeking information/literacy and this results in the absence of business development in the future in a better direction. In Karanganyar Village, Poncokusumo, Malang, a fiber business was found in the manufacture of tools made of plastic, this business has been running for 3 years and there is still no high enough development. In addition, another problem is the problem of fiber waste that has not been utilized at all. There was no processing or conversion into useful and economically valuable materials. The solution offered is the manufacture of organic pots/growing media. The method of implementing this service used three stages, namely preparation, implementation, and reporting. The data collected in the form of documentation, observation, and the results of filling out the respondent's questionnaire which was then analyzed descriptively qualitatively. The results of the service showed that organic growing media from fiberglass can be applied and attract partners' interest. Knowledge of occupational health and safety has enthusiastically educated partners. The results of the partner satisfaction questionnaire showed that this service activity has a very satisfied response category of 65.7% and a satisfied response of 34.3%. So, WBS fiberglass partners have received, supported, appreciated, and followed this service well.

Co-Authors Agustina Dinda Putri Larasati Agustina, Nur Indah Ahmad Munjin Nasih Amara, Aulia Andyka Medarda Pradana Anie Yulistyorini Anugrah Ricky Wijaya Armaini, Armaini Azizatuz Zahro Berlian Enggarani Daratu Kusuma Eviana Putri Dedek Sukarianingsih Deni Ainur Rokhim Dinar Rachmadika Baharintasari Dwi Ratna Wulandari Edy, Duwi Leksono Effendy Effendy Eli Hendrik Sanjaya Elinira Subandi Endang Budiasih Evy Damayanthi Fadhil Md Din, Mohd Fauziatul Fajaroh Harno Dwi Pranowo Hartoyo Hartoyo Hayuni Retno Widarti Hengky Pamungkas, Yahya Hong Chen I Wayan Dasna Ida Bagus Suryadarma Imam Alfianto Irsyadatun Ni’mah Januarti, Wenny Kusumaningrum, Irma Kartika Lailatur Rizqiyah Li, Yu-You Lilik Eka Radiati Lutfi Nur Azizah Mahmudah, Siti Nur Marisa Lidia Anggarwati Mauliana Nursafitri MOH. TAUFIK Mohammad Bukhori Muhammad Muchson Muhammad Roy Asrori Mujahidah, Amiroh Nabilah Muntholib Munzil Naim, Suratman S. Nazriati Nazriati dkk. Ni’mah, Irsyadatun Nur Hikmah Nurin Fitriana Nursafitri, Mauliana Nurul Ultiyati Peter Juvenaris Manek Prakasa, Yana Fajar Prastika, Frissa Rizkihati Putra, Andika Bagus Rachman, Ihsan Budi Retnosari, Rini Ridwan Joharmawan Rizky, M Rochmawati, Rochmawati Rohman Fantusi Rohman Fantusi Sakhi, Fillah M. Sinta Nur Laila Siti Marfuah, Siti Siti Marfu’ah Subandi Subandi Subandi, Mahfudi Sahly Suhadi Ibnu Suhadi Ibnu Suhadi Ibnu, Suhadi Sumari Sumari Suratman S. Naim Syafiuddin Syafiuddin Ulfatin, Nurul Rahma Wele, Amonius Regino Widi Dewi Ruspitasari Yahmin Yahmin Yana Fajar Prakasa Yana Fajar Prakasa Yoto Yoto, Yoto Yuski Sudana Yusuf Abdullah

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