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All Journal Chemistry Indonesian Journal of Chemical Research Kumawula: Jurnal Pengabdian Kepada Masyarakat Jurnal Abdi: Media Pengabdian Kepada Masyarakat Jurnal Pijar MIPA Unesa Journal of Chemistry Molekul: Jurnal Ilmiah Kimia Journal of Engineering and Technological Sciences

Samik Samik

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Author-ID : 369677

Aerospace Engineering Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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PELATIHAN PEMBUATAN TEPUNG CACING TANAH SEBAGAI BAHAN TAMBAHAN BERPROTEIN TINGGI DALAM UPAYA MEMPERKUAT EKONOMI MASYARAKAT Sanjaya, I Gusti Made; Samik, Samik; Koestiari, Toeti Koestiari
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol 1, No 2 (2016)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v1n2.p150-155

Telah dilakukan PKM pembuatan tepung cacing tanah pada ibu-ibu PKK RT 2 RW 3 Desa Sumberdukun Ngariboyo Magetan sebagai alternatif penghasilan tambahan dalam membantu pendapatan suami di bidang pertanian. PKM dilakukan dengan metode pelatihan dengan keberhasilan diukur melalui monitoring lapangan dan angket survey. Hasilnya menunjukkan bahwa PKM berjalan dengan baik dan efektif yang ditunjukkan dengan keterampilan peserta menghasilkan tepung cacing tanah berkualitas yang dapat dilihat dari produk tepung yang dihasilkan. Peserta dapat menyerap bekal manajemen bahan, manajemen usaha serta kewirausahaan dengan baik.

PEMBUATAN MINUMAN KESEHATAN BERBASIS HERBAL UNTUK WARGA DESA KANDANGAN, KECAMATAN KANDANGAN, KABUPATEN KEDIRI Tukiran, Tukiran; Suyatno, Suyatno; Hidajati, Nurul; Samik, Samik
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol 5, No 1 (2019)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v5n1.p25-32

Kandangan Village, is one of the villages in Kandangan sub-district, Kediri where some of its citizens workas farmers, farm laborers, carpenters, masons, construction workers, vegetable vendors, open food stallsand chop. Meanwhile, most of the housewives do not work because they take care of housework. Some ofthem are housemaids, washing and ironing workers, and selling various daily necessities at home(chopping). One type of training from the PKM given was a training in making liquid-based herbal healthdrinks, including syrup empon-empon, minuman alang-alang, and beras kencur which are ready for sale inâ€œcafÃ©â€ and herbal shops. This PKM activity was carried out in August 2018 involving 13 housewives fromKandangan village, which began with the presentation of training materials by the PKM Team, followed byassistance in the practice of making herbal-based health drinks, and ended with reflections/feedback andgiving questionnaires. The target of this PKM activity is the increasing skills of housewives in training inmaking herbal-based health drinks. The results of the questionnaire can be seen that PKM activities aredeclared to have gone well and have been able to provide understanding and strengthening skills in makingherbal-based health drinks for participants.

ARTIKEL REVIEW: PEMANFAATAN KATALIS ABU CANGKANG PADA REAKSI TRANSESTERIFIKASI MINYAK JELANTAH MENJADI BIODIESEL Ervina Retnaningtyas Indarwati; Samik Samik
Unesa Journal of Chemistry Vol 11 No 2 (2022)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia

This review article about the use of a catalyst derived from shell ash in the transesterification reaction of used cooking oil into biodiesel. The preparation of this article was carried out using a literature study by reviewing research articles. Biodiesel is a subtitute for reneable fuels, environmentally friendly and can replace diesel. Biodiesel is generally produced using a transesterification reaction is slow so that a catalyst is needed that can speed up the reaction. CaO catalyst can be obtained from shell ash that has been calcined at the certain temperature which can produce metal oxides. The highest metal oxide content in shell ash is CaO in the range of 81,09% to 93,16% using a calcination temperature in the range of 700oC to 900oC. Used cooking oil is cooking oil that has been used in the frying process for many times and has been damaged due to hydrolysis, oxidation, and polymerization processes. Based on the results of the literature study, it can be seen that the CaO catalyst from egg shell ash, snail shells and blood clam shell produced. The higest %yield biodiesel in the transesterification reaction of used cooking oil, which was 99,738% which came from egg shell ash. These result are influenced between alcohol and oil ratio of 12 : 1, the amount of 7% CaO catalyst, and transesterification reaction temperature of 70oC.

REVIEW: PEMBUATAN BIODIESEL DENGAN METODE TRANSESTERIFIKASI MENGGUNAKAN KATALIS BERBAHAN LIMBAH TULANG M. Iqbal Al Ghifari; Samik Samik
Unesa Journal of Chemistry Vol 12 No 1 (2023)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia

Among various renewable energy sources, biodiesel is a promising candidate to replace fossil fuels. Biodiesel is produced from the transesterification reaction of oil or fat with alcohol. The transesterification reaction requires a suitable catalyst. There are two kinds of catalysts, namely homogeneous and heterogeneous catalysts. Heterogeneous catalysts have several advantages, including being easy to separate and can be reused without going through many processes. Currently, many natural materials are used as raw material for heterogeneous catalysts, such us bone. In this article, we will discuss the manufacture of biodiesel with a catalyst from various bone waste such as cow, goat, sheep, chicken, fish and ostrich bones. Based on the results of a review of several articles, it was known that the catalyst from bone which has the highest biodiesel yield comes from fish bone which is calcined at a temperature of 997.42 oC for 2 hours, the catalyst can produce a biodiesel yield of 97.73%. With the reaction conditions: ratio of moles of oil : methanol of 1 : 6.27, weight of the catalyst 1.01% of the mass of oil with a reaction that lasted for 5 hours at a temperature of 70 oC. Key words: biodiesel, transesterification, catalyst, waste bone

ARTIKEL REVIEW: PEMANFAATAN KATALIS ZEOLIT ALAM TERAKTIVASI DALAM SINTESIS BIODIESEL DENGAN METODE ESTERIFIKASI DAN TRANSESTERIFIKASI Siti Novita Sari Ulfa; Samik Samik
Unesa Journal of Chemistry Vol 11 No 3 (2022)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia

The depletion of petroleum fuels can become a problem if not addressed quickly. This can lead to scarcity and an increase in the price of fuel oil. Alternative energy has begun to be developed as a solution to this problem, one of which is biodiesel. Biodiesel synthesis has the main ingredient in the form of oils such as palm oil, used cooking oil, rubber seed oil, crude palm oil, and others. The biodiesel synthesis reaction is a transesterification reaction that tends to be slow and long, so a catalyst is needed so that the reaction can run quickly. There are two catalysts that can be used, namely homogeneous catalysts and heterogeneous catalysts. The use of heterogeneous catalysts is easier because at the end of the reaction they can be separated easily. One of the heterogeneous biodiesel catalysts that can be used is natural zeolite catalyst. The use of natural zeolite catalysts has many advantages such as its relatively cheap price, abundant abundance in nature, and environmental friendliness. Utilization of natural zeolite as a biodiesel catalyst requires the activation of natural zeolite which can be carried out with acid or alkaline solutions. Therefore, in this review article, we discuss the % yield of biodiesel with the help of natural zeolite catalysts which are activated by acid or base from ten articles. The highest % biodiesel yield was obtained at 100% in the production of biodiesel from used cooking oil with an acid-activated Wonosari natural zeolite catalyst in the form of 6M HCl in an esterification reaction of 2% by weight of oil. Then proceed with the transesterification reaction with KOH as a base catalyst at a temperature of 60℃ with a molar ratio of oil and methanol 1:6 for 1 hour, and stirring speed of 1200 rpm. Based on the results of this review article, natural zeolite that has been activated by acid or base can be used as a catalyst in biodiesel synthesis using the transesterification and esterification method. Key words: Biodiesel, Biodiesel Catalyst, Natural Zeolite

a RIVIEW: SINTESIS BIODIESEL DENGAN KATALIS HETEROGEN DARI CANGKANG HEWAN MOLLUSCA Mukhlash Imaduddin; Samik Samik
Unesa Journal of Chemistry Vol 12 No 1 (2023)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia

Energy is a very important need in human life. Most of the energy needs that humans need are supplied from non-renewable natural resources such as oil, natural gas and coal. The solution given is to replace it with biodiesel. Biodiesel is an alternative energy based on plants and animals. Sources of vegetable oil can be obtained from rubber seeds and cooking oil. Rubber seeds contain about 40-50%-w vegetable oil with the dominant fatty acid composition being oleic acid and linoleic acid, while the rest are palmitic acid, stearic acid, arachidic acid and other fatty acids. Catalysts derived from several shells showed that the yield value of the highest shellfish was in green mussels with a yield of 90.1% with a reaction temperature of 65oC for 4 hours with a catalyst weight of 5% of the weight of biodiesel.. Keywords: Calcination, Transesterification, Mollusca

Karakterisasi Abu Sekam Padi dengan Menggunakan XRD samik samik; Nita Kusumawati; Maria Monica Sianita; Dina Kartika Maharani; Amalia Putri Purnamasari; Mukhlash Imaduddin; M Iqbal Al Ghifari
Unesa Journal of Chemistry Vol 11 No 3 (2022)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia

Rice husk ash is a material that mostly contains silica (SiO2). Silica can be used as a raw material for various industries. This research is an experimental study, covering the synthesis of rice husk ash with various calcination temperatures, namely 800 oC, 900 oC, and 1000 oC. The purpose of this study was to identify the type of solid and crystalline phases of RHA so that the results of this study could be used as a basis for further research on the use of RHA. The results of the synthesis produced four types of samples, namely samples calcined at a temperature of 800 oC (coded S-800), calcined at 900 oC was gray (S-900 A), calcined at 900 oC was white (S-900 P), and samples were calcined at a temperature of 1000 oC (S-1000). Characterization using X-Ray Diffraction (XRD) showed that all samples included crystalline solids with the tridymite crystal phase and cristobalite were detected in samples S-800, S-900 P, S-900 A, and S-1000. Cristobalite and tridymite are silica mineral polymorphs with the same chemical formula as quartz, SiO2, but have different crystal structures. The percentage of crystallinity of the sample was calculated by comparing the sample which has the highest peak intensity (S-1000). The crystallinity results for S-1000, S-900 P, and S-900 A were 100%, 96%, 79%, and 32%. The lower the calcination temperature, the smaller the percentage of crystallinity. Keywords: rice husk ash, calcined, silica, XRD, crystalline solid

Development and Characterization of Edible Films Based on Gelatin/Chitosan Composites Incorporated with Zinc Oxide Nanoparticles for Food Protection Bahar, Asrul; Samik, Samik; Sianita, Maria Monica; Kusumawati, Nita; Khafidlah, Ianatul; Muslim, Supari; Auliya, AR. Sella
Molekul Vol 18 No 3 (2023)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2023.18.3.6630

The increase in cases of global environmental pollution due to plastic waste makes the development of biodegradable active packaging very urgent. Gelatin (G), is one of the potential edible film raw materials. However, its weak water barrier and mechanical properties have limited its wide application. The addition of chitosan nanofiber (CHNF) and zinc oxide nanoparticles (ZnONP) is expected to improve the mechanical and barrier properties and present antioxidant and antimicrobial properties to the G film. Characterization results using FTIR, SEM, and DSC showed good compatibility between the G, CHNF, and ZnONP matrix. Meanwhile, the packaging test results confirmed that gelatin, CHNF, and ZnONP-based composite films have the potential to be used as functional materials in food packaging.

REVIEW ARTIKEL : PRODUKSI BIODIESEL DARI MINYAK GORENG BEKAS DENGAN METODE TRANSESTERIFIKASI MENGGUNAKAN KATALIS Budiman, Aditya Arif; samik, samik
Unesa Journal of Chemistry Vol. 12 No. 2 (2023): Vol 12 No 2 (2023)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ujc.v12n2.p36-48

Waste frying oils are renewable energy raw materials that can be used to produce biodiesel at more economical production costs because they are waste and are cheap or even free. The use of WFO as a biodiesel raw material is an environmentally friendly measure as it can reduce environmental pollution, especially in soil and rivers. Therefore, the purpose of this article is to explain the processing of WFO into biodiesel raw materials with a variety of catalysts, including acid, base, and enzyme catalysts that are both homogeneous and heterogeneous. The method used in writing this article is to review various articles on the production of biodiesel with the transesterification method using catalysts that are acidic (homogenic and heterogenic), bases (homogenic and heterogenic), and enzyme catalysts. Results from various studies suggest that WFO can be converted into biodiesel using a variety of catalysts. Under optimal conditions, homogeneous acid catalysts such as H2SO4 produce yield biodiesel at 95.37%. Heterogeneous acid catalysts such as Fe2O3-MnO-SO42- / ZrO2 produce a yield of 96,5%. Homogeneous base catalysts such as NaOH produce a biodiesel yield of 98%. Heterogeneous base catalysts such as CaO-MgO produce biodiesel yields of 98,95%. Enzyme catalysts such as Lipase enzyme from Candida rugosa and Rhizomucor miehei produce biodiesel yields of 96,5%. From these results, the heterogeneous base catalyst CaO-MgO is the catalyst with the highest yield in producing biodiesel among various other catalysts

PELATIHAN PEMBUATAN HAND SANITIZER BERBASIS BAHAN ALAM UNTUK MENDUKUNG PROTOKOL KESEHATAN DI ERA PANDEMI COVID-19 Maharani, Dina Kartika; Kusumawati, Nita; Setiarso, Pirim; Sanjaya, IGM; Monica, Maria; Samik, Samik; Safitri, Rizka Dwi; Nurzulla, Weka Firda Rizki; Rhamdiyah, Fastabiqul Khairati; Ramadanti, Awanda Halida; Naulia, Kaila; Lailiyah, Nur
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 6, No 1 (2023): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v6i1.39267

Pandemi Covid-19 menuntut masyarakat untuk selalu menerapkan protokol kesehatan terutama jika berada di luar rumah atau saat berada di kerumunan. Salah satunya yang gencar disosialisaikan adalah mencuci tangan dengan sabun atau menggunakan hand sanitizer. Kebiasaan baru ini meningkatkan kebutuhan hand sanitizer yang tinggi di pasaran. Hand sanitizer yang sudah ada di pasaran umumnya realtif cukup mahal dan berbasis alkohol yang kurang ramah lingkungan. Oleh karena itu perlu diadakan pelatihan pembuatan hand sanitizer berbasis bahan alam sebagai bentuk edukasi kepada masyarakat untuk memperoleh hand sanitizer yang murah dan ramah lingkungan. Pelatihan diikuti oleh peserta yang mayoritas berdomisili di wilayah Driyorejo, Gresik. Tujuan diadakannya pelatihan ini adalah agar warga Driyorejo, Gresik yang mayoritas bekerja di bidang industri memiliki pengetahuan dan keterampilan untuk membuat hand sanitizer secara mandiri dari bahan yang mudah diperoleh di sekitar rumah. Bahan alam yang digunakan yaitu daun kemangi dan daun sirih, serta diberikan juga pelatihan untuk pembuatan hand sanitizer alkohol dalam sediaanspray dan gel. Kegiatan pelatihan dilakukan pada 4 September 2021 secara webinar, penyampaian materi dilakukan melalui Zoom. Pelatihan dilaksanakan dengan peserta sebanyak 87 orang. Kepada 20 peserta diberikan kesempatan untuk membuat hand sanitizer sendiri di rumah dengan mempraktikkan ilmu yang telah didapatkan dari pelatihan. Sebagai bahan evaluasi, peserta diwajibkan mengirimkan video saat proses pembuatan. Hasil evaluasi kegiatan pelatihan hand sanitizer menunjukkan bahwa masyarakat Driyorejo telah terampil membuat hand sanitizer alami maupun berbasis alkohol.

Co-Authors Amalia Putri Purnamasari Asrul Bahar Auliya, AR. Sella Budiman, Aditya Arif Dina Kartika Maharani DINA KARTIKA MAHARANI Ervina Retnaningtyas Indarwati Estiningtyas, Indri Wasa Hery Widijanto I GUST MADE SANJAYA Ishma, Ervina Fadhilatul ISMONO ISMONO Khafidlah, Ianatul Koestiari, Toeti Koestiari Kurniawan, Muhammad Ridho Hafid M Iqbal Al Ghifari M. Iqbal Al Ghifari Maria Monica Sianita Maria Monica Sianita Maria Monica Sianita Basukiwardojo Monica, Maria Mufid, Mohammad Fakhrul Mukhlash Imaduddin Naulia, Kaila Nita Kusumawati Nita Kusumawati NURUL HIDAJATI Nurzulla, Weka Firda Rizki Pirim Setiarso Putri, Vani Dwi Hani Rahayu, Nunik Tri Ramadanti, Awanda Halida Rhamdiyah, Fastabiqul Khairati Safitri, Rizka Dwi Sanjaya, IGM Siti Novita Sari Ulfa Supari Muslim Suyatno Suyatno Taqiya, Rufaidah Zulfa Tukiran Tukiran

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