Garuda - Garba Rujukan Digital

Catalytic and Thermal Decarboxylation of Mg-Zn Basic Soap to Produce Drop-in Fuel in Diesel Boiling Ranges Neonufa, Godlief F.; Soerawidjaja, Tatang H.; Prakoso, Tirto
Journal of Engineering and Technological Sciences Vol 49, No 5 (2017)
Publisher : ITB Journal Publisher, LPPM ITB

Fatty acid deoxygenation is a method for producing renewable hydrocarbon fuels such as green diesel, jet biofuel and biogasoline. In the present commercial method, deoxygenation is directly applied to vegetable oils through liquid phase hydrotreatment. This method is expensive because it consumes a large amount of hydrogen and requires severe operating conditions. The objective of this study was the production of a diesel-like hydrocarbon fuel that can be considered as drop-in replacement for petroleum-based diesel fuels, by catalytic thermal decarboxylation of Mg-Zn basic soap. In particular, this study investigated the decarboxylation of Mg-Zn basic soap at low temperature and pressure, without external supply of hydrogen. The Mg-Zn basic soap (9/1 mole ratio of Mg/Zn) was derived from palm stearin and decarboxylated at 350 Â°C and atmospheric pressure for 5 hours. The basic soap effectively decarboxylated, yielding a diesel-like hydrocarbon fuel with a liquid product yield of 62%-weight. The resulting hydrocarbon product is a complex mixture consisting of normal paraffins in the range of carbon chain length C8âC19, iso-paraffins and various olefin products.

Catalytic and Thermal Decarboxylation of Mg-Zn Basic Soap to Produce Drop-in Fuel in Diesel Boiling Ranges Godlief F. Neonufa; Tatang H. Soerawidjaja; Tirto Prakoso
Journal of Engineering and Technological Sciences Vol. 49 No. 5 (2017)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2017.49.5.2

Fatty acid deoxygenation is a method for producing renewable hydrocarbon fuels such as green diesel, jet biofuel and biogasoline. In the present commercial method, deoxygenation is directly applied to vegetable oils through liquid phase hydrotreatment. This method is expensive because it consumes a large amount of hydrogen and requires severe operating conditions. The objective of this study was the production of a diesel-like hydrocarbon fuel that can be considered as drop-in replacement for petroleum-based diesel fuels, by catalytic thermal decarboxylation of Mg-Zn basic soap. In particular, this study investigated the decarboxylation of Mg-Zn basic soap at low temperature and pressure, without external supply of hydrogen. The Mg-Zn basic soap (9/1 mole ratio of Mg/Zn) was derived from palm stearin and decarboxylated at 350 °C and atmospheric pressure for 5 hours. The basic soap effectively decarboxylated, yielding a diesel-like hydrocarbon fuel with a liquid product yield of 62%-weight. The resulting hydrocarbon product is a complex mixture consisting of normal paraffins in the range of carbon chain length C8"“C19, iso-paraffins and various olefin products.

Comparison of Liquid Product Characteristics of PFAD Metal Soap Decarboxylation by Batch and Continuous Process Godlief F. Neonufa; Lidya Elizabeth; Endar Puspawiningtiyas; Meiti Pratiwi; Astri Nur Istyami; Ronny Purwadi; Tatang H. Soerawidjaja
Journal of Engineering and Technological Sciences Vol. 53 No. 3 (2021)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2021.53.3.11

Well-run continuous processes will benefit the industrial world in the future. This paper investigated the effect of batch and continuous processes on metal basic soap decarboxylation in terms of the liquid product characteristics. The metal soap used in the process was made from palm fatty acid distillate (PFAD) reacted with mixed metal oxides of Zn, Mg, and Ca. While the batch decarboxylation was carried out in a batch reactor at 400 °C for 5 hours, the continuous decarboxylation was conducted at 400 °C with a feed flow rate of 3.75 gr/minutes. Theoretically, the yield of batch decarboxylation is 76.6 wt% while the yield of continuous decarboxylation is 73.37 wt%. The liquid product was fractionated to separate short-chain hydrocarbon of C7-C10 (gasoline fractions) from medium- to long-chain hydrocarbons, or greater than C11 (green diesel fraction). The result showed that the alkane content from the batch process was higher than from the continuous process, whereas the continuous process produced more ketone products compared to the batch process. Furthermore, the GC-FID analysis showed a similar amount of total hydrocarbon (alkane, iso-alkane, and alkene) in both the batch and the continuous process.

Comparative Study of Nyamplung (Callophylum inophyllum) Kernel Oil Obtained from Mechanical and Chemical Extraction for Biofuel Production Hanifah Widiastuti; Meiti Pratiwi; Godlief F. Neonufa; Tatang Hernas Soerawidjaja; Tirto Prakoso
Jurnal Rekayasa Proses Vol 13, No 2 (2019)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Nyamplung (Callophylum inophyllum) contains oil around 40-73% in its seed. It has recently gained recognition as a potential source for biofuel production. The oil recovery process from renewable sources such as nyamplung is widely carried out by using chemical extraction with solvents. Nevertheless, this method is considered costly and there are safety issues as well as environmental concerns related to the solvents used. Therefore, mechanical extraction has emerged as an alternative method. In this study, the nyamplung oil recovered by mechanical extraction via hydraulic press and chemical extraction utilizing Soxhlet extraction was compared. Soxhlet extraction was carried out by using n-hexane as a solvent with a temperature of 70 oC for 5 hours. Before the extraction process, the kernel was initially pretreated to reduce the particle sizes and the water content. The results show that the oil yield recovered using the hydraulic press is 58%, which is comparable with the value obtained from Soxhlet extraction (65%). The oil characteristics were also compared, and the profiling shows no significant difference in the properties (saponification value, acid value, and iodine value) of oils recovered using both methods. The composition of fatty acids was also analyzed for utilization as a biofuel feedstock. Higher content of oleic acid was observed in oil resulted from chemical extraction while mechanical extraction yielded oil with higher palmitic acid content.A B S T R A KNyamplung (Callophylum inophyllum) mengandung minyak sebesar 40-73% dalam bijinya dan belakangan ini diakui sebagai sumber potensial untuk pembuatan biofuel. Proses perolehan minyak nabati dari biji nyamplung pada umumnya dilakukan menggunakan ekstraksi kimia dengan pelarut. Akan tetapi, metode ini cenderung berbiaya tinggi serta memiliki isu berkaitan dengan keselamatan proses dan dampak lingkungan berkaitan dengan penggunaan pelarut. Oleh karena itu, metode ekstraksi mekanis banyak dikembangkan sebagai alternatif metode ekstraksi minyak. Dalam penelitian ini, hasil perolehan minyak nyamplung melalui penekanan hidrolik dibandingkan dengan hasil dari ekstraksi Soxhlet. Ekstraksi Soxhlet dilakukan dengan pelarut n-heksana pada suhu 70 oC selama 5 jam. Sebelum proses ekstraksi, biji nyamplung mengalami perlakuan awal terlebih dahulu dengan cara digiling untuk mengurangi ukuran biji dan dipanaskan untuk mengurangi kadar air. Hasil yang diperoleh menunjukkan bahwa yield minyak dari ektraksi mekanik sebesar 58% sementara yield dari ekstraksi Soxhlet adalah 65%. Karakteristik minyak yang dihasilkan melalui kedua metode ini tidak menunjukkan perbedaan yang signifikan dalam hal nilai saponifikasi, nilai asam, dan nilai iodine. Analisis komposisi asam lemak dari kedua minyak yang dihasilkan menunjukkan bahwa minyak yang diperoleh dari ekstraksi kimia mengandung asam oleat dengan persentase yang lebih tinggi sementara minyak dari hasil ekstraksi mekanik memiliki persentase asam palmitat yang lebih tinggi.

Comparative Study of Nyamplung (Callophylum inophyllum) Kernel Oil Obtained from Mechanical and Chemical Extraction for Biofuel Production Hanifah Widiastuti; Meiti Pratiwi; Godlief F. Neonufa; Tatang Hernas Soerawidjaja; Tirto Prakoso
Jurnal Rekayasa Proses Vol 13, No 2 (2019)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Nyamplung (Callophylum inophyllum) contains oil around 40-73% in its seed. It has recently gained recognition as a potential source for biofuel production. The oil recovery process from renewable sources such as nyamplung is widely carried out by using chemical extraction with solvents. Nevertheless, this method is considered costly and there are safety issues as well as environmental concerns related to the solvents used. Therefore, mechanical extraction has emerged as an alternative method. In this study, the nyamplung oil recovered by mechanical extraction via hydraulic press and chemical extraction utilizing Soxhlet extraction was compared. Soxhlet extraction was carried out by using n-hexane as a solvent with a temperature of 70 oC for 5 hours. Before the extraction process, the kernel was initially pretreated to reduce the particle sizes and the water content. The results show that the oil yield recovered using the hydraulic press is 58%, which is comparable with the value obtained from Soxhlet extraction (65%). The oil characteristics were also compared, and the profiling shows no significant difference in the properties (saponification value, acid value, and iodine value) of oils recovered using both methods. The composition of fatty acids was also analyzed for utilization as a biofuel feedstock. Higher content of oleic acid was observed in oil resulted from chemical extraction while mechanical extraction yielded oil with higher palmitic acid content.A B S T R A KNyamplung (Callophylum inophyllum) mengandung minyak sebesar 40-73% dalam bijinya dan belakangan ini diakui sebagai sumber potensial untuk pembuatan biofuel. Proses perolehan minyak nabati dari biji nyamplung pada umumnya dilakukan menggunakan ekstraksi kimia dengan pelarut. Akan tetapi, metode ini cenderung berbiaya tinggi serta memiliki isu berkaitan dengan keselamatan proses dan dampak lingkungan berkaitan dengan penggunaan pelarut. Oleh karena itu, metode ekstraksi mekanis banyak dikembangkan sebagai alternatif metode ekstraksi minyak. Dalam penelitian ini, hasil perolehan minyak nyamplung melalui penekanan hidrolik dibandingkan dengan hasil dari ekstraksi Soxhlet. Ekstraksi Soxhlet dilakukan dengan pelarut n-heksana pada suhu 70 oC selama 5 jam. Sebelum proses ekstraksi, biji nyamplung mengalami perlakuan awal terlebih dahulu dengan cara digiling untuk mengurangi ukuran biji dan dipanaskan untuk mengurangi kadar air. Hasil yang diperoleh menunjukkan bahwa yield minyak dari ektraksi mekanik sebesar 58% sementara yield dari ekstraksi Soxhlet adalah 65%. Karakteristik minyak yang dihasilkan melalui kedua metode ini tidak menunjukkan perbedaan yang signifikan dalam hal nilai saponifikasi, nilai asam, dan nilai iodine. Analisis komposisi asam lemak dari kedua minyak yang dihasilkan menunjukkan bahwa minyak yang diperoleh dari ekstraksi kimia mengandung asam oleat dengan persentase yang lebih tinggi sementara minyak dari hasil ekstraksi mekanik memiliki persentase asam palmitat yang lebih tinggi.

Environmental, Social dan Governance (ESG) dan Kinerja Keuangan Perusahaan Publik di Indonesia Angela Merici Minggu; Jusuf Aboladaka; Godlief Fredrik Neonufa
Owner : Riset dan Jurnal Akuntansi Vol. 7 No. 2 (2023): Research Artikel Volume 7 Issue 2: Periode April 2023
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/owner.v7i2.1371

Companies have an important responsibility to contribute to pursuing and achieving the Sustainable Development Goals (SDGs) introduced by the United Nations. The company's approach used as an opportunity to contribute is engagement in practices that cover environmental, social and governance (ESG) aspects. Stakeholders will pay attention to companies that use the ESG strategy as part of the company's business strategy. This will certainly have an impact on increasing the value of the company. Changes in company value are driven by the good financial performance of the company. ESG practices are expected to receive a positive response from stakeholders so that they are considered as an important strategy in achieving the company's business continuity. Therefore, this study investigates the relationship between environmental, social and governance (ESG) practices and the performance of financial firms. The sample in this study was obtained using a purposive sampling technique. The sample was selected from a population of public companies listed on the Indonesia Stock Exchange in the 2010-2019 time period. The sample data obtained were grouped according to each of the research variables to be tested, namely environmental, social, governance, and Tobin's Q. Furthermore, hypothesis testing was carried out using the panel data regression statistical test approach with the help of SPSS 22 software. The results of the research show that environmental, social, and government variables affect the company's financial performance individually.

PELATIHAN PEMBUATAN SABUN CAIR DAN SABUN PADAT BERBASIS MINYAK ATSIRI PADA SISWA SMK PERTANIAN PEMBANGUNAN NEGERI KUPANG Mery Rambu Boba Djoru; Godlief Fredrik Neonufa
SWARNA: Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 5 (2023): SWARNA: Jurnal Pengabdian Kepada Masyarakat, Mei 2023
Publisher : LPPM Sekolah Tinggi Ilmu Ekonomi 45 Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/swarna.v2i5.519

Sabun merupakan surfaktan yang digunakan untuk membersihkan kotoran, debu, bakteri dan lemak karena mengandung senyawa surface active yaitu senyawa yang terbentuk dari natrium atau kalium dengan asam lemak baik nabati ataupun hewani melalui proses saponifikasi. Salah satu sifat sabun adalah memiliki kemampuan untuk menurunkan tegangan permukaan pada air sehingga sabun dapat mengangkat kotoran dan lemak. Pada teknologi dewasa ini yang berkembang pesat dengan tuntutan berbagai produk baik pangan dan obat-obatan untuk dikembangkan, sehingga berbagai alternatif sebagai bahan aktif untuk meningkatkan kualitas sabun juga semakin bervariasi dilakukan. Minyak atsiri biasa disebut minyak esensial adalah merupakan senyawa yang terdapat pada tanaman yang diperoleh dengan cara diekstrak dari bagian tumbuhan melalui proses penyulingan. Beberapa contoh minyak atsiri yang sering digunakan adalah minyak lavender, mintak pohon teh atau tea tree oil, minyak kayu putih, minyak cendana, minyak sere, minyak kulit jeruk, minyak jahe, minyak cengkeh dan sebagainya. Minyak atsiri di ekstrak dari bagian tanaman baik itu pada batang, daun, buah, biji, kulit maupun akar. Beberapa sifat dari minyak atsiri adalah dapat menjadi zat aditif, antibakteri dan sebagai aromaterapi yang memiliki efek menenangkan sehingga dapat berguna bagi kesehatan. Pada umumnya minyak atsiri mengandung sejumlah komponen senyawa fenolik yang tinggi, dimana senyawa ini pembentuk antioksidan sehingga melindungi sel dari kerusakan. Penggunaan minyak atsiri pada pembuatan sabun diharapkan dapat memberikan efek relaksasi, dan menjadi antiseptik alami serta aroma terapi bagi produk sabun yang dibuat. Pada kegiatan PKM ini siswa SMK Pertanian Pembangunan Kupang dilatih membuat sabun cair dan padat dengan tambahan atsiri jahe, cengkeh, kunyit dan daun sirih sebagai zat aditifnya. Tujuan PKM adalah untuk memberikan pengatahuan dan wawasan serta melatih keterampilan siswa untuk memanfaatkan potensi hasil pertanian maupun perkebunan yang dapat digunakan untuk pembuatan sabun herbal.

PELATIHAN PEMBUATAN SABUN CAIR DAN SABUN PADAT BERBASIS MINYAK ATSIRI PADA SISWA SMK PERTANIAN PEMBANGUNAN NEGERI KUPANG Mery Rambu Boba Djoru; Godlief Fredrik Neonufa
SWARNA: Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 5 (2023): SWARNA: Jurnal Pengabdian Kepada Masyarakat, Mei 2023
Publisher : LPPM Sekolah Tinggi Ilmu Ekonomi 45 Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/swarna.v2i5.519

Sabun merupakan surfaktan yang digunakan untuk membersihkan kotoran, debu, bakteri dan lemak karena mengandung senyawa surface active yaitu senyawa yang terbentuk dari natrium atau kalium dengan asam lemak baik nabati ataupun hewani melalui proses saponifikasi. Salah satu sifat sabun adalah memiliki kemampuan untuk menurunkan tegangan permukaan pada air sehingga sabun dapat mengangkat kotoran dan lemak. Pada teknologi dewasa ini yang berkembang pesat dengan tuntutan berbagai produk baik pangan dan obat-obatan untuk dikembangkan, sehingga berbagai alternatif sebagai bahan aktif untuk meningkatkan kualitas sabun juga semakin bervariasi dilakukan. Minyak atsiri biasa disebut minyak esensial adalah merupakan senyawa yang terdapat pada tanaman yang diperoleh dengan cara diekstrak dari bagian tumbuhan melalui proses penyulingan. Beberapa contoh minyak atsiri yang sering digunakan adalah minyak lavender, mintak pohon teh atau tea tree oil, minyak kayu putih, minyak cendana, minyak sere, minyak kulit jeruk, minyak jahe, minyak cengkeh dan sebagainya. Minyak atsiri di ekstrak dari bagian tanaman baik itu pada batang, daun, buah, biji, kulit maupun akar. Beberapa sifat dari minyak atsiri adalah dapat menjadi zat aditif, antibakteri dan sebagai aromaterapi yang memiliki efek menenangkan sehingga dapat berguna bagi kesehatan. Pada umumnya minyak atsiri mengandung sejumlah komponen senyawa fenolik yang tinggi, dimana senyawa ini pembentuk antioksidan sehingga melindungi sel dari kerusakan. Penggunaan minyak atsiri pada pembuatan sabun diharapkan dapat memberikan efek relaksasi, dan menjadi antiseptik alami serta aroma terapi bagi produk sabun yang dibuat. Pada kegiatan PKM ini siswa SMK Pertanian Pembangunan Kupang dilatih membuat sabun cair dan padat dengan tambahan atsiri jahe, cengkeh, kunyit dan daun sirih sebagai zat aditifnya. Tujuan PKM adalah untuk memberikan pengatahuan dan wawasan serta melatih keterampilan siswa untuk memanfaatkan potensi hasil pertanian maupun perkebunan yang dapat digunakan untuk pembuatan sabun herbal.

Comparative study of nyamplung (Callophylum inophyllum) kernel oil obtained from mechanical and chemical extraction for biofuel production Hanifah Widiastuti; Meiti Pratiwi; Godlief F. Neonufa; Tatang H. Soerawidjaja; Tirto Prakoso
Jurnal Rekayasa Proses Vol 13 No 2 (2019): Volume 13, Number 2, 2019
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.42816

Nyamplung (Callophylum inophyllum) contains oil around 40-73% in its seed. It has recently gained recognition as a potential source for biofuel production. The oil recovery process from renewable sources such as nyamplung is widely carried out by using chemical extraction with solvents. Nevertheless, this method is considered costly and there are safety issues as well as environmental concerns related to the solvents used. Therefore, mechanical extraction has emerged as an alternative method. In this study, the nyamplung oil recovered by mechanical extraction via hydraulic press and chemical extraction utilizing Soxhlet extraction was compared. Soxhlet extraction was carried out by using n-hexane as a solvent with a temperature of 70 oC for 5 hours. Before the extraction process, the kernel was initially pretreated to reduce the particle sizes and the water content. The results show that the oil yield recovered using the hydraulic press is 58%, which is comparable with the value obtained from Soxhlet extraction (65%). The oil characteristics were also compared, and the profiling shows no significant difference in the properties (saponification value, acid value, and iodine value) of oils recovered using both methods. The composition of fatty acids was also analyzed for utilization as a biofuel feedstock. Higher content of oleic acid was observed in oil resulted from chemical extraction while mechanical extraction yielded oil with higher palmitic acid content.

Title

Found 9 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 9 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 9 Documents
Search