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All Journal CHEMICA Jurnal Teknik Kimia Jurnal Pendidikan Guru Profesional
Fitri, Nur Hidayatul
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Chemical Engineering, Chemistry & Bioengineering Energy Other

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Penerapan Model Pembelajaran Problem Based Learning Berdasarkan Gaya Belajar Kolb dalam Meningkatkan Hasil Belajar Peserta Didik Miskiyyah, Zakiyatul; Harun, Lukman; Fitri, Nur Hidayatul
Jurnal Pendidikan Guru Profesional Vol. 1 No. 1 (2023): JURNAL PENDIDIKAN GURU PROFESIONAL
Publisher : Pascasarjana Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jpgp.v1i1.166

Abstract

Penelitian ini dilandasi dari hasil belajar mata pelajaran Matematika siswa kelas X-L masih rendah, kurangnya daya tarik siswa terhadap pembelajaran matematika, banyak siswa yang belum mengetahui gaya belajarnya. Teknik pengumpulan data yang digunakakan adalah tes dan non tes. Analisis data yang digunakan adalah Deskriptif nratif dan statistik deskriptif. Penelitian Tindakan Kelas (PTK) digunakan penelitian untuk melakukan penelitian ini melalui dua siklus. Pada pembelajaran Pada pra siklus terdapat 13 siswa yang tuntas dengan presentase 36,2% dan rata-rata nilai yang didapatkan sebesar 54. Pada siklus I terdapat 23 siswa yang tuntas dengan presentase 63,8% dan rata-rata nilai yang didapatkan sebesar 79,9. Pada siklus II terdapat 30 siswa yang tuntas dengan presentase 83,3% dan rata-rata nilai yang didapatkan sebesar 81,14. Kesimpulan penelitian ini adalah hasil hasil belajar mata pelajaran Matematika siswa kelas X-L SMA Negeri 6 Semarang Tahun Pelajaran 2022/2023 pada pembelajaran dapat meningkat melalui penerapan model pembelajaran Problem Based Learning (PBL) berdasarkan gaya belajar.
Utilization of Bamboo Waste by Engineering Acid Hydrolysis (H2SO4) to Produce Furfural Compounds Fitri, Nur Hidayatul; Ramandani, Adityas Agung; Cendekia, Devy; Teguh, Dedi
CHEMICA: Jurnal Teknik Kimia Vol. 10 No. 2 (2023): August 2023 [Available online since October 02, 2023]
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v10i2.26609

Abstract

Bamboo waste containing lignocellulosic can be used as a material for forming furfural compounds. Furfural is an intermediate product that is widely needed by the chemical industry in the manufacture of finished products such as resins, disinfectants, lubricating oils, synthetic rubber, and so on. This product can be produced from materials containing pentosan. The purpose of this study was to determine the effect of the delignification process on pentosan levels,yield and characterization of the resulting furfural, as well as the potential of pentosan to become furfural compounds. In this study the formation of furfural from bamboo waste was carried out using the acid hydrolysis method, with the independent variables namely cooking temperatures of 90 oC, 100 oC and 110 oC, H2SO4 concentrations of 5%, 10% and 15% and cooking times of 60 minutes, 90 minutes , and 120 minutes. Based on the results of research that has been done, it is known that the delignification process has an influence on the pentosan level, where the sample without delignification obtained a pentosan level of 11.10% and using the delignification process obtained a pentosan level of 14.67%. Characterization of furfural analysis results by color test showed a change in color to red and based on the results of GC-MS analysis at retention time 24.
Co-Authors Cendekia, Devy Miskiyyah, Zakiyatul Ramandani, Adityas Agung Teguh, Dedi