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All Journal Tsaqofah: Jurnal Penelitian Guru Indonesia Jurnal Serambi Biologi Jurnal Pendidikan Jurnal Rekayasa Proses JURNAL REKAYASA KIMIA & LINGKUNGAN
Putri, Rika
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Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Education Energy Engineering Immunology & microbiology Languange, Linguistic, Communication & Media Mathematics Other

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Pengaruh Pupuk Organik Cair (POC) Teknologi Nano Dari Limbah Perut Ikan Tuna Mata Besar (Thunnus obesus) Terhadap Pertumbuhan Tanaman Cabai Merah (Capsicum annum L.) Putri, Rika; Razak, Abdul
Jurnal Serambi Biologi Vol. 9 No. 2 (2024): Jurnal Serambi Biologi
Publisher : Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/srmb.v9i2.353

Abstract

Cabai merah adalah salah satu komoditas holtikultura yang sangat penting. Cabai merah memiliki kandungan gizi dan berbagai vitamin. Buah cabai merah menghasilkan rasa pedas karena adanya kandungan Capsaicin pada cabai. Kebutuhan akan cabai merah meningkat karena bertambahnya jumlah penduduk. Pada saat sekarang ini, unsur hara yang dipakai oleh petani dipenuhi dengan penggunaan pupuk anorganik yang dapat menyebabkan kerusakan pada tanah sehingga kulitas tanah makin menurun. Dalam mengurangi pemakaian pupuk anorganik, digunakan bahan organik dalam pembuatan pupuk baik dalam bentuk padat maupun cair. Metode yang digunakan dalam penelitian adalah rancangan acak lengkap (RAL) dengan 5 perlakuan dan 5 pengulangan yang terdiri dari: P0 (100 ml air/ tanpa POC), P1 (25 ml POC + 75 ml air), P2 ( 50 ml POC + 50 ml air), P3 (73 ml POC + 25 ml air), P4 (100 ml POC). Data yang diperoleh dianalisis dengan sidik ragam ANOVA dengan menggunakan aplikasi SPSS 23. Jika terdapat perbedaan nyata maka dilanjutkan dengan uji Duncan New Multiple Range Test (DNMRT) pada taraf 5%. Hasil penelitian menunjukkan bhwa pemberian pupuk organik cair teknologi nano dari limbah ikan Tuna Mata Besar berpengaruh terhadap semua parameter pengamatan. Konsentrasi optimal dari semua parameter pengamatan adalah 100 ml POC/polibag.
Masalah Kejiwaan sebagai Inspirasi Karya Seni Lukis Surealis Putri, Rika; Asa, Ferdian Ondira
TSAQOFAH Vol 5 No 1 (2025): JANUARI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/tsaqofah.v5i1.4667

Abstract

The purpose of the final work is to provide education about several types of mental health problems that originate from social factors of surrealist paintings. The author took data through observations of people with mental health problems around the author, and developed it into an idea using I Bandem method as an art consortium the has five stages, from the preparation stage, the elaboration stage, the synthesis stage, the realization stage, the concept and the completion stage. Based on observation and development of ideas, the author can visualize ten surrealist paintings, with various size ranging from 100cm x 100cm to 100cm x 130cm with the title of the :“Nolep”, “Lebay”, “Bodoh”,“Jangan”, “Pembohong”, “Caper”, “Moodyan”, “Istirahat”, “Liburan”, “Pikun”.
PENDEKATAN SISTEM DALAM PERSPEKTIF ONTOLOGY DAN MUTU PENDIDIKAN DI MTs. AL HUDA PANGKALAN SUSU Putri, Rika
Al Ittihadu Vol. 4 No. 1 (2025)
Publisher : Cv Arsy Persada Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63736/ai.v4i1.400

Abstract

Penelitian ini mengkaji pendekatan sistem dalam perspektif ontologi dan hubungannya dengan mutu pendidikan di MTs Al Huda . Pendekatan sistem memberikan kerangka untuk menganalisis interaksi antara komponen-komponen dalam pendidikan, sedangkan perspektif ontologi berfokus pada sifat dan keberadaan entitas dalam sistem pendidikan. Penelitian ini menggunakan metode kualitatif dengan pengumpulan data melalui observasi, wawancara, dan dokumentasi. Hasil penelitian menunjukkan bahwa penerapan pendekatan sistem yang mempertimbangkan aspek ontologis dapat meningkatkan mutu pendidikan di Mts Al huda terutama dalam hal pengembangan kurikulum, metode pengajaran, dan evaluasi pembelajaran. Peningkatan keterlibatan stakeholder, seperti guru, siswa, dan orang tua, juga berkontribusi pada perbaikan kualitas pendidikan. Kesimpulan dari penelitian ini menegaskan pentingnya integrasi pendekatan sistem dan perspektif ontologi untuk mencapai mutu pendidikan yang lebih baik di lembaga pendidikan.
Optimization of sustainable biodiesel production from waste cooking oil using heterogeneous alkali catalyst Andrifar, M.; Goembira, Fadjar; Ulfah, Maria; Putri, Rika; Yuliarningsih, Rati; Aziz, Rizki
Jurnal Rekayasa Proses Vol 16 No 2 (2022): Volume 16, Number 2, 2022
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.74373

Abstract

The increasing world population, rapid industrialization, urbanization, and economic growth have led to a continuous increase in the consumption of fossil fuels to meet the ever-increasing demand for energy. Continuous emissions from burning fossil fuels will create a need to find appropriate and sustainable substitutes for fossil fuels. Biodiesel is the right alternative solution for diesel engines because it is renewable, non-toxic, and environmentally friendly. Waste cooking oil (WCO) from the food, non-food, restaurant, and household sectors is produced on a large scale in every country and can contribute to environmental pollution if proper disposal systems are not applied. Instead of throwing it landfills Environmental pollution can be minimized by recycling WCO. This study evaluates the potential of using WCO to produce biodiesel using zeolite synthesized from fly ash as a heterogeneous alkali catalyst through a transesterification reaction. The reactor in this study used a 1,000 ml three-necked boiling flask equipped with a condenser, cooling tank, and pump. Stirring and heating during the process of biodiesel production using a magnetic stirrer and a hot plate. The thermometer is used to measure the reaction temperature. Optimization of biodiesel production from zeolite catalyst synthesized from fly ash based on variations in the ratio of methanol: oil (8:1; 10:1; 12:1; and 14:1), catalyst weight (1, 2, 3, and 4% weight), and temperature (45 oC, 55 oC, and 65oC). Zeolite from fly ash produces biodiesel with a yield of 91.67% with optimum operating conditions reaction time of 60 minutes, methanol oil ratio of 8:1, operating temperature 55oC, and the amount of catalyst 1% by weight. This experiment confirms the possibility of utilizing fly ash waste for the application of catalysts in biodiesel production.
Synthesis of Zeolite from Fly Ash and Bottom Ash and Application for Biodiesel Transesterification Putri, Rika; Goembira, Fadjar; Ulfah, Maria; Andrifar, Muhammad; Yuliarningsih, Rati; Aziz, Rizki
Jurnal Rekayasa Kimia & Lingkungan Vol 19, No 1 (2024): Jurnal Rekayasa Kimia & Lingkungan (June 2024 )
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v19i1.33921

Abstract

Burning coal in a Coal-Fired Power Plant produces by-products like fly ash and bottom ash. Zeolite synthesized from the ash in Teluk Sirih Coal-Fired Power Plant was applied as a catalyst in the biodiesel transesterification reaction. Zeolite synthesis used the hydrothermal method with acid pretreatment. The operating conditions for fly ash zeolite are a 2.4-molar ratio SiO2/Al2O3 and a crystallization time of 6 hours. The bottom ash zeolite used a 2.0-molar ratio SiO2/Al2O3 and a crystallization time of 8 hours. The performance test of the synthesized catalyst was carried out in the transesterification reaction using waste cooking oil as a raw material with a free fatty acid content of 0.7%. The synthesized catalyst was characterized using x-ray diffraction, scanning electron microscope, and Bruneuer-emmet-teller. The biodiesel with the highest yield was analyzed based on SNI 7182: 2015. The synthesis results of the catalyst produced type A zeolite, shown by the typical X-ray diffraction pattern and supported by the morphological test results using a cube-shaped. The surface area of zeolite fly ash and bottom ash is 12.87 m2/g and 5.13 m2/g. The test showed fly ash zeolite had the highest biodiesel yield of 89.66%. Based on the characterization using SNI 7182: 2015, the color and free glycerol met the standards, while density 40 C, kinematic viscosity 40 C, acid number, total glycerol, methyl ester content, and water content did not meet the standards.
Co-Authors Abdul Razak Andrifar, M. Andrifar, Muhammad Asa, Ferdian Ondira Fadjar Goembira Maria Ulfah Rizki Aziz Yuliarningsih, Rati