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Analisis Pendapatan Petani Padi Pengguna Pupuk Organik dan Anorganik di Kecamatan Harau Hendriani, Riva; Putri, Sri Kembaryanti; Hanum, Latifa; Mukhlis, Mukhlis
LUMBUNG Vol 17 No 2 (2018): Juli
Publisher : Politeknik Pertanian Negeri Payakumbuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (812.48 KB) | DOI: 10.32530/lumbung.v17i2.37

Abstract

Penelitian ini didasarkan pada: ketergantungan petani yang menggunakan pupuk anorganik dan meningkatkan harga pupuk anorganik yang berakibat pada peningkatan biaya produksi dan berkurangnya keuntungan usahatani padi, sehingga mempengaruhi kesejahteraan petani keluarga. Tujuan penelitian ini adalah: 1) Untuk mengetahui pendapatan petani padi, 2) Untuk mengetahui perbedaan pendapatan antara petani pupuk organik padi dan pupuk petani padi anorganik. Metode pencapaian tujuan dilakukan dengan: analisis usahatani menggunakan rumus pendapatan usahatani. Hasil penelitian menunjukkan bahwa: 1) Pendapatan petani padi pupuk organik adalah Rp.657.838 menjadi 14.633.798; pendapatan rata-rata sebesar Rp. 5.464.104,03. Sedangkan pendapatan petani padi pupuk anorganik adalah Rp. 500.983 hingga Rp 14.189.743; pendapatan rata-rata sebesar Rp 5.901.806,24; 2) Pendapatan petani padi pupuk organik tidak berbeda nyata dengan pendapatan petani padi anorganik.
Studi Proses Pembuatan Biodiesel dari Minyak Kelapa (Coconut Oil) dengan Bantuan Gelombang Ultrasonik Sri Kembaryanti Putri; Supranto; Rahman Sudiyo
Jurnal Rekayasa Proses Vol 6, No 1 (2012)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (116.402 KB) | DOI: 10.22146/jrekpros.2453

Abstract

Biodisel dapat dibuat melalui proses metanolisis berbagai minyak nabati seperti minyak kelapa, minyak kelapa sawit, minyak kedelai dan lain-lain. Minyak kelapa memiliki potensi besar untuk digunakan sebagai bahan baku dalam pembuatan biodisel karena ketersediaannya yang berlimpah. Gelombang ultrasonik dapat digunakan untuk meningkatkan konversi reaksi dan mempercepat laju reaksi. Tujuan penelitian ini adalah untuk mempelajari pengaruh penggunaan gelombang ultrasonik dalam proses transesterifikasi minyak kelapa, perbandingan pereaksi, konsentrasi katalisator dan aktivasi metanol terhadap konversi reaksi. Katalisator natrium hidroksida dengan berat tertentu dilarutkan di dalam metanol dalam volum tertentu. Setelah terlarut sempurna bersamaan dengan minyak kelapa dimasukkan ke dalam reaktor dan reaksi dijalankan. Sampel diambil setiap interval 10 menit untuk dianalisis kandungan asam lemaknya. Reaksi dihentikan setelah mencapai waktu 60 menit. Setelah itu, biodisel yang terbentuk dipisahkan dari gliserol dan dimurnikan. Hasil percobaan menunjukkan bahwa transesterifikasi minyak kelapa dapat dipacu dengan bantuan gelombang ultrasonik. Konversi reaksi yang dicapai empat kali lebih besar (85,66%) dibandingkan dengan konversi pada proses konvensional (20,15%). Proses dilakukan pada kondisi operasi yang sama; perbandingan pereaksi 5 mgek metanol/mgek minyak, 1% berat katalisator, dan suhu awal reaksi 60°C. Hasil penelitian menunjukkan semakin tinggi perbandingan ekivalen metanol-minyak, semakin tinggi konversi reaksi yang dicapai. Kata kunci: biodisel, minyak kelapa, transesterifikasi, gelombang ultrasonik, tetapan laju reaksi Biodiesel is produced by methanolysis of various vegetable oils such as coconut oil, palm oil, seed oil, soybean oil, etc. Coconut oil has the potential as a raw material for making biodiesel due its abundant availability. The use of the ultrasonic waves can increase conversion and reaction rate. The objective of this study was to study the effect of the use of ultrasonic waves on the transesterification of coconut oil, the ratio of reactants, catalyst concentration, and activation of methanol on the reaction conversion. Sodium hydroxide catalyst with a specific weight was dissolved in methanol with a certain volume. After dissolvtion was completed, the reactants including coconut oil with a certain volume were put into the reactor, and reaction was then started. Samples were taken every 10 minute intervals for analysis of fatty acids. The reaction was stopped after 60 minutes. Furthermore, biodiesel was separated from glycerol and purified. Experimental results showed that transesterification of coconut oil could be improved with the help of ultrasonic waves. The obtained conversion was 4 times higher (85,66%) than the conversions generated in the conventional process (20,15%) The process was done in the same condition which was the ratio of reactants of 5 mgek methanol / mgek oil, catalyst 1% by weight oil and the initial reaction temperature of 60C. The greater the ratio of methanol-oil equivalent, the higher reaction conversion is. Keywords: biodiesel, coconut oil, transesterification, ultrasonic wave, reaction rate constant
Studi Proses Pembuatan Biodiesel dari Minyak Kelapa (Coconut Oil) dengan Bantuan Gelombang Ultrasonik Sri Kembaryanti Putri; Supranto; Rahman Sudiyo
Jurnal Rekayasa Proses Vol 6, No 1 (2012)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.2453

Abstract

Biodisel dapat dibuat melalui proses metanolisis berbagai minyak nabati seperti minyak kelapa, minyak kelapa sawit, minyak kedelai dan lain-lain. Minyak kelapa memiliki potensi besar untuk digunakan sebagai bahan baku dalam pembuatan biodisel karena ketersediaannya yang berlimpah. Gelombang ultrasonik dapat digunakan untuk meningkatkan konversi reaksi dan mempercepat laju reaksi. Tujuan penelitian ini adalah untuk mempelajari pengaruh penggunaan gelombang ultrasonik dalam proses transesterifikasi minyak kelapa, perbandingan pereaksi, konsentrasi katalisator dan aktivasi metanol terhadap konversi reaksi. Katalisator natrium hidroksida dengan berat tertentu dilarutkan di dalam metanol dalam volum tertentu. Setelah terlarut sempurna bersamaan dengan minyak kelapa dimasukkan ke dalam reaktor dan reaksi dijalankan. Sampel diambil setiap interval 10 menit untuk dianalisis kandungan asam lemaknya. Reaksi dihentikan setelah mencapai waktu 60 menit. Setelah itu, biodisel yang terbentuk dipisahkan dari gliserol dan dimurnikan. Hasil percobaan menunjukkan bahwa transesterifikasi minyak kelapa dapat dipacu dengan bantuan gelombang ultrasonik. Konversi reaksi yang dicapai empat kali lebih besar (85,66%) dibandingkan dengan konversi pada proses konvensional (20,15%). Proses dilakukan pada kondisi operasi yang sama; perbandingan pereaksi 5 mgek metanol/mgek minyak, 1% berat katalisator, dan suhu awal reaksi 60°C. Hasil penelitian menunjukkan semakin tinggi perbandingan ekivalen metanol-minyak, semakin tinggi konversi reaksi yang dicapai. Kata kunci: biodisel, minyak kelapa, transesterifikasi, gelombang ultrasonik, tetapan laju reaksi Biodiesel is produced by methanolysis of various vegetable oils such as coconut oil, palm oil, seed oil, soybean oil, etc. Coconut oil has the potential as a raw material for making biodiesel due its abundant availability. The use of the ultrasonic waves can increase conversion and reaction rate. The objective of this study was to study the effect of the use of ultrasonic waves on the transesterification of coconut oil, the ratio of reactants, catalyst concentration, and activation of methanol on the reaction conversion. Sodium hydroxide catalyst with a specific weight was dissolved in methanol with a certain volume. After dissolvtion was completed, the reactants including coconut oil with a certain volume were put into the reactor, and reaction was then started. Samples were taken every 10 minute intervals for analysis of fatty acids. The reaction was stopped after 60 minutes. Furthermore, biodiesel was separated from glycerol and purified. Experimental results showed that transesterification of coconut oil could be improved with the help of ultrasonic waves. The obtained conversion was 4 times higher (85,66%) than the conversions generated in the conventional process (20,15%) The process was done in the same condition which was the ratio of reactants of 5 mgek methanol / mgek oil, catalyst 1% by weight oil and the initial reaction temperature of 60C. The greater the ratio of methanol-oil equivalent, the higher reaction conversion is. Keywords: biodiesel, coconut oil, transesterification, ultrasonic wave, reaction rate constant
Analisis Pendapatan Usaha Agroindustri Kue Talam Jagung Manis di Nagari Sungai Antuan Kecamatan Mungka Mukhlis; Riva Hendriani; Nila Sari; Latifa Hanum; Regia Indah Kemala Sari; Sri Kembaryanti Putri; Amrizal
Journal of Sustainable Research In Management of Agroindustry (SURIMI) Vol. 3 No. 1 (2023): SURIMI : April 2023
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/surimi.v3i1.1843

Abstract

This research is based on the application of innovation, creativity, and differentiation of kue talam by utilising the ample availability of sweet corn by the wants and needs of consumers and producers. This study is based on the application of innovation, creativity, and differentiation of sweet corn talam cakes by utilising the ample availability of sweet corn by the wants and needs of consumers and producers, so that the cakes are attractive and tasty to increase the income of entrepreneurs and corn farmers. This study aims to analyse the business income of sweet corn talam cake agro-industry. To analyse the income of the sweet corn talam cake agro-industry business, it was carried out using quantitative descriptive methods using the income formula. The results showed that: The total cost required in the agro-industrial business of sweet corn talam cake is Rp 1,995,168; The total revenue obtained from the agro-industrial business of sweet corn talam cake is Rp 2,880,000, the amount of income earned is Rp 884,832.