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All Journal Communications in Science and Technology Jurnal Ilmiah Manajemen & Kewirausahaan
Sarifah
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Economics, Econometrics & Finance Engineering

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Corncob residue as heterogeneous acid catalyst for green synthesis of biodiesel: A short review Mardina, Primata; Wijayanti, Hesti; Tuhuloula, Abubakar; Hijriyati, Erita; Sarifah
Communications in Science and Technology Vol 6 No 2 (2021)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.6.2.2021.460

Abstract

The utilization of an appropriate catalyst in biodiesel production depends on the free fatty acid content of vegetable oil as a feedstock. Recently, heterogeneous acid catalysts are widely chosen for biodiesel production. However, these catalysts are non-renewable, highly expensive and low stability. Due to the aforementioned drawbacks of commercial heterogeneous acid catalyst, a number of efforts have been made to develop renewable green solid acid catalysts derived from biomass. Published literature revealed that the application of the biomass derived solid acid catalysts can achieve up to 98% yield of biodiesel. This article focused on corncob as raw material in solid acid catalyst preparation for biodiesel production. The efficient preparation method and performance comparation are discussed here. The corncob derived heterogeneous acid catalysts provides an environmentally friendly and green synthesis for biodiesel production.
Kontribusi Pajak Hotel dan Pajak Restoran Terhadap Pendapatan Asli Daerah (PAD) Sarifah
Jurnal Ilmiah Manajemen & Kewirausahaan Vol 8 No 1 (2021): September
Publisher : Fakultas Ekonomi dan Bisnis Institut Ilmu Sosial dan Bisnis Andi Sapada

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Abstract

Penelitian ini bertujuan untuk menganalisis kontribusi Pajak Hotel terhadap Pendapatan Asli Daerah (PAD) Kab. Gowa dan untuk menganalisis kontribusi Pajak Restoran terhadap Pendapatan Asli Daerah (PAD) Kab. Gowa serta untuk menganalisis kontribusi Pajak Hotel dan Pajak Restoran terhadap Pendapatan Asli Daerah (PAD) Kab. Gowa. Metode penelitian menggunakan analisis deskriptif kuantitatif untuk mengkaji dan menganalisis kontribusi Pajak Hotel dan Pajak Restoran. Hasil penelitian menunjukkan bahwa Kontribusi Pajak Hotel terhadap Peningkatan Pendapatan Asli Daerah Kabupaten Gowa sangat efektif, Kontribusi Pajak Restoran terhadap Peningkatan Pendapatan Asli Daerah Kabupaten Gowa sangat efektif dan kontribusi Pajak Hotel dan Pajak Restoran Terhadap Peningkatan Pendapatan Asli Daerah sudah sangat efektif karena melampaui target yang ditetapkan dengan prosentase > 100 %.
Co-Authors Abubakar Tuhuloula Hesti Wijayanti Hijriyati, Erita Primata Mardina