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All Journal International Journal of Advances in Applied Sciences JURNAL KIMIA SAINS DAN APLIKASI TELKOMNIKA (Telecommunication Computing Electronics and Control) Tadris: Jurnal keguruan dan Ilmu Tarbiyah Agrointek Eksergi: Chemical Engineering Journal Bulletin of Chemical Reaction Engineering & Catalysis Jurnal IPTEK KOVALEN: Jurnal Riset Kimia 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 Al-Kimia Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Chemistry Indonesian Journal of Chemical Research Prosiding Seminar Nasional Sains dan Teknologi Terapan Jurnal Fisika : Fisika Sains dan Aplikasinya Fullerene Journal of Chemistry Jurnal Karinov Stannum : Jurnal Sains dan Terapan Kimia Jurnal Ilmiah Farmako Bahari Indonesian Journal for Social Responsibility Jurnal Graha Pengabdian Reforma: Jurnal Pendidikan dan Pembelajaran JoEMS : Journal of Education and Management Studies Jurnal Ilmiah Ibnu Sina (JIIS): Ilmu Farmasi dan Kesehatan Journal of Disruptive Learning Innovation (JODLI) Journal of Engineering Science and Technology Jurnal Teknik Kimia dan Lingkungan Jurnal MIPA dan Pembelajarannya Bulletin of Chemical Reaction Engineering & Catalysis Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS) Jurnal Terapan Pendidikan Dasar dan Menengah Jurnal Akademika Kimia Frontier Advances in Applied Science and Engineering Jurnal Konstatering

Sumari Sumari

Universitas Negeri Malang

Author-ID : 391985

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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Analisis Kandungan Mineral Pasir Pantai Bajul Mati Kabupaten Malang Menggunakan XRF dan XRD Sumari Sumari; Yana Fajar Prakasa; Muhammad Roy Asrori; Dinar Rachmadika Baharintasari
Jurnal Kimia Fullerene Vol 5 No 2 (2020): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v5i2.154

Mineral exploration in Indonesia has not been evenly distributed, so a study with title analysis of the sand mineral content of Bajul Mati Malang Regency was carried out using XRF and XRD. The aims of this study to determine the percentage of mineral that containing in the sand of Bajul Mati beach in Malang Regency. The instruments used XRF and XRD where the samples were placed in a sample holder and irradiated with X-rays then. The result of analysis of mineral content and metal oxide in Bajul Mati beach sand showed that the beach sand of Bajul Mati has the big potential to be used as a base for making nanomaterials. The results of analysis of XRF showed that the content of SiO2 was 46.7% and the results of analysis of XRD showed that the SiO2 mineral has the quartz phased. Bajul Mati beach sand has the potential to be a source of mineral material.

MENINGKATKAN KEMAMPUAN GURU DALAM MENYUSUN STRATEGI DAN MODEL PEMBELAJARAN MELALUI WORKSHOP PADA SMK BINAAN Sumari Sumari
Reforma : Jurnal Pendidikan dan Pembelajaran Vol 7, No 2 (2018)
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/rfma.v7i2.83

Penelitian ini bertujuan untuk mendeskripsikan proses menyusun strategi dan model pembelajaran melalui workshop, serta meningkatkan Kinerja guru dalam menyusun strategi pembelajaran melalui workshop di SMK Binaan kabupaten Lamongan semeseter ganjil Tahun Pelajaran 2017/2018. Selain itu, penelitian ini juga bertujuan untuk mendeskripsikan respon guru terhadap kegiatan yang dilakukan.. Penelitian dilakukan dengan dua siklus dan masing-masing siklus terdiri atas empat tahapan, yakni: perencanaan, pelaksanaan, observasi dan refleksi. Indikator kinerja yang ditetapkan adalah: bila minimal terdapat 85 % guru tergolong sangat baik dan baik dalam aspek penilaian strategi pembelajaran, maka sudah dapat dikatakan tindakan yang diterapkan berhasil. Aspek yang diukur dalam menilai keberhasilan tindakan adalah kesiapan guru mengikuti workshop dan hasil pelaksanaan workshop. Penelitian dilakukan dengan subyek penelitian adalah 30 orang guru IPA di 15 SMK Binaan kabupaten Lamongan. Dari analisis diperoleh bahwa terjadi peningkatan kesipan dan Kinerja guru dalam menyusun strategi pembelajaran dari siklus I ke siklus II. Ketercapaian indikator kinerja terdapat pada tindakan ke II. Dengan demikian dapat disimpulkan bahwa melalui workshop dapat meningkatkan Kinerja guru dalam menyusun strategi pembelajaran pada guru-guru IPA di SMK Binaan kabupaten Lamongan. Kata kunci: Kinerja guru, strategi pembelajaran, workshop

Isolasi dan Optimasi Transesterifikasi Minyak Biji Pepaya (Carica papaya) sebagai Sumber Energi Terbarukan Aman Santos; Farashinta Nadia; Rini Retnosari; Anugrah Ricky Wijaya; Sumari Sumari; Ihsan Budi Rachman
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 4, No 1 (2020)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

AbstrakLimbah biji pepaya Indonesia sebanyak 134.904,75 ton, mengandung minyak yang berpotensi ditransesterifikasi menjadi metal serta berpotensi sebagai biodiesel. Penelitian ini bertujuan untuk menentukan: (1) kondisi optimum sintesis biodiesel dengan dua tahapan reaksi, (2) karakter metil ester sintetis melalui transesterifikasi, dan (3) komponen metil ester sintetis serta potensinya sebagai biodiesel. Tahapan penelitian eksperimental laboratoris ini, yaitu: (1) ekstraksi minyak biji pepaya, (2) sintesis metil ester dari minyak biji pepaya, (3) karakterisasi metil ester sintetis dan uji potensi biodiesel meliputi penentuan densitas, viskositas, indeks bias, dan uji bilangan asam, dan (4) identifikasi komponen metil ester sintetis dengan GC-MS. Rendemen tertinggi metil ester sintetis diperoleh 75,82% b/b pada konsentrasi katalis KOH 1% b/b dengan karakteristik viskositas 4,76 cSt, massa jenis 0,85 g/mL, bilangan asam 0,70 mg KOH/g, dan indeks bias 1,44, maka metil ester sintetis telah memenuhi SNI 04-7182-2006 dan berpotensi sebagai biodiesel. Hasil uji GC-MS menunjukkan adanya metil palmitat 14,58%, metil oleat 78,87%, dan metil stearat 4,57%.

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.

Conversion of Glycerol to Ethanol by Integrating Ultrasonic and Ni/ZSM-5 Catalyst Devi Indrasari Mustopa Putri; Sumari Sumari; Handoko Darmokoesomo; Ganden Supriyanto; Nur Arief Nugroho
Eksergi Vol 20, No 1 (2023)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v20i1.8167

The increased production of biodiesel which is used as an alternative fuel has led to an increase in the by-product in the form of glycerol. This glycerol byproduct can be utilized by converting it into other compounds such as ethanol. The production of ethanol from glycerol requires a catalyst that can break down the molecular size of glycerol, one of which is zeolite. One type of zeolite that is good to use is ZSM-5, because this type of zeolite has a high degree of thermal stability, acid stability and selectivity. The catalytic properties of ZSM-5 can be improved by impregnating metals from the transition group, in this study using Ni (nickel). The results obtained that the catalyst Ni/ZSM-5 has a total acidity value of 0.920 mmol/g and has a specific surface area of 138.754 m2/g. The highest ethanol product was produced at 4 hours of sonication, which was 20.362%.

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.

Pengaruh Ekstrak Biji Ketapang (Terminalia catappa L.) Terhadap Daya Hambat Pertumbuhan Bakteri Eschericia coli: Effect of Ketapang (Terminalia catappa L.) Seed Extract Against the Inhibitory Power of Eschericia coli Bacteria Growth Zelen Surya Minata Minata; Annida Elfiana Citra Ardianty; Sumari; Yudhi Utomo
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 2 (2023): August Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i2.16355

Diarrheal is a disease that is widely endemic in tropical countries, especially in Indonesia. The bacterium that causes the appearance of diarrheal diseases is Eschericia coli. Plants that have the potential to be a cure for diarrhea are ketapang (Terminalia catappa L.). Ketapang seeds contain tannins, flavonoids, alkaloids, and saponins that can be used as antibacterial. This study aims to identify the effect of ketapang seed extract on the activity of E. coli bacteria. Extraction of ketapang seeds is carried out by the soxhlet extraction method with a solvent mixture of water and ethanol 96%. This research is a laboratory experiment. Bacterial growth inhibition test is carried out by the phytochemical test of ketapang seed extract with the addition of FeCl3 solution showed positive results containing tannin compound indicated by the formation of a blackish-green colored solution. Positive control was carried out with amoxicillin and negative control with 70% ethanol solution. The results of the ANOVA test analysis obtained a significance value of 0.963, interpreted that there was a difference in inhibition power in variations in the concentration of ketapang seed extract with the most effective extract concentration being 0.8%. The higher the concentration of ketapang seed extract, the greater the inhibition against the growth of E. coli bacteria, therefore it can be used as a basic ingredient for anti-diarrhea drugs.

Synthesis of MnO2 as Supercapacitor Electrodes Material by Green Chemistry Method Through Dehydroxylation of Tangerine Peel (Citrus reticulata) Essential Oil Izzah, Dewi Jalinan; Fajaroh, Fauziatul; Aliyatulmuna, Adilah; Sumari, Sumari; Marfu'ah, Sitti
Al-Kimia Vol 10 No 2 (2022): DECEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v10i2.31459

In this era, most technology requires electronic equipment. The performance of electronic equipment may be affected by energy storage components like a supercapacitor, so the development of supercapacitor electrode materials using green chemical methods needs to be pursued. Material with a good specific capacitance is MnO2. Most of the MnO2 synthesis methods are not based on green chemistry, so there is an alternative method. One of them is by utilizing the waste from tangerine peels. This study aimed to synthesize MnO2 through dehydroxylation of tangerine peel essential oil. The steps for conducting this research consisted of isolation of tangerine peel essential oil, analysis of the constituent components of tangerine peel essential oil, synthesis of MnO2 through dehydroxylation of essential oils tangerine peel, and MnO2 characterization. XRD results showed that MnO2 synthesized at pH 11 had the highest percentage of α-MnO2 (97%). This is evidenced by the presence of α-MnO2 diffractogram according to the ICSD No.20227. The SEM results showed that MnO2 had a spherical morphology with a particle diameter of 39.51 nm. α-MnO2 has a larger tunnel structure compared to β- and γ-MnO2, making the charge-discharge process easier so that α-MnO2 has the potential as a supercapacitor electrode material.

Co-Authors A. Alif Mardianto Adilah Aliyatulmuna Agus Budianto Agustina, Nur Indah Aldwinarta, Farrel Hafiz Aman Santos Aman Santoso Amanatin, Alfitia Dwi Andyka Medarda Pradana Annida Elfiana Citra Ardianty Antonia, Vonny Anugrah Ricky Wijaya Ciptawati, Endang Cylindrica, Vrisca Bella Dedek Sukarianingsih Devi Indrasari Mustopa Putri Dinar Rachmadika Baharintasari Dinar Rachmadika Baharintasari Dwi Ratna Wulandari Effendy Effendy Eli Hendrik Sanjaya Endang Budiasih Evi Susanti Fadila Abna Swari Faizah, Siti Farashinta Nadia Fauziah, Putri Nanda Fauziatul Fajaroh FITRIYAH, IDA Ganden Supriyanto Habiddin Hadi Nur Hadi Nur Hadi Nur Handoko Darmokoesomo I Wayan Dasna Ida Bagus Suryadarma Ida Bagus Suryadharma Ima Rosyida Indah Nur Pramesti Irsyadatun Ni’mah Izzah, Dewi Jalinan Jacky Anggara Nenohai Januarti, Wenny Kelvert Kong Kinanthi, Bilqis Rahma Lailatul Ilmiyah Lailatur Rizqiyah Liqanatul Putri Sholikah Ma'ruf, Umar Mahmudah, Siti Nur Mardhiyyah, Cut Ainul Mardianto, A. Alif Marfu'ah, Sitti Margaret Pandaleke Mauliana Nursafitri Maya Sari Muhammad Roy Asrori Mukhamad Nurhadi, Mukhamad Muntholib Munzil Nareswari, Tsalis Jauza Nazriati Nazriati dkk. Ni’mah, Irsyadatun Novi Andriani Novi Andriani, Novi Nur Arief Nugroho Nur Indah Agustina Nurin Fitriana Nursafitri, Mauliana Permatasari, Suryani Indah Prakasa, Yana Fajar Priska Yohanita Sodanango Purbo Suwasono Putri Hapsari, Mamila Putri Qori Utami Rachman, Ihsan Budi Ratna Kusumawardani, Ratna Retnosari, Rini Ridwan Joharmawan Rizky, M Rohman Fantusi Rohman Fantusi Ryansyah, Hardi Sakhi, Fillah M. Santa, Eldat Wira Santosa Santosa Setiawan, Nur Candra Eka Sholikah, Liqanatul Putri Siew Fan Wong Sin Yuan Lai Sin Yuan Lai Sinta Nur Laila Siti Marfuah, Siti Siti Marfu’ah SRI RAHAYU Suharti Suryani Indah Permatasari Syafiuddin Syafiuddin Teguh Wirawan Vrisca Bella Cylindrica Wahyu S. Pambudi Wahyu Setyo Pambudi Wele, Amonius Regino Wiwin Dwi Nurpitasari Yahmin Yahmin Yana Fajar Prakasa Yana Fajar Prakasa Yudhi Utomo Yulianto, Andik Yulisya Zuriatni Yuneta Dwi Yunisari Zelen Surya Minata Zhiying Zhu Zuniarto, Ahmad Azrul

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