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All Journal VALENSI Jurnal Teknik Kimia Eksergi: Chemical Engineering Journal Bulletin of Chemical Reaction Engineering & Catalysis Communications in Science and Technology ASEAN Journal of Chemical Engineering Aptekmas : Jurnal Pengabdian Kepada Masyarakat Dharma: Jurnal Pengabdian Masyarakat Jurnal Teknik Kimia dan Lingkungan Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Paradigma: Pemberdayaan & Pengabdian Kepada Masyarakat
Kusuma, Heri Septya
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PENGARUH DAYA DAN RASIO BAHAN PADA EKSTRAKSI KAYU CENDANA (Santalum album) DENGAN METODE MICROWAVE HYDRODISTILLATION: OPTIMASI MENGGUNAKAN RESPONSE SURFACE METHODOLOGY Kusuma, Heri Septya; Mahfud, Mahfud
Jurnal Teknik Kimia Vol 10, No 1 (2015): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v10i1.616

Abstract

Minyak cendana merupakan salah satu jenis minyak atsiri yang disebut dengan minyak eteris atau minyak terbang. Untuk mengoptimalkan potensi minyak nilam, maka salah satu usaha yang dapat dilakukan adalah memperbaiki metode destilasi dan kondisi operasi agar dapat menghasilkan minyak nilam dalam waktu yang relatif singkat. Tujuan penelitian ini adalah untuk mempelajari proses pengambilan minyak cendana dari kayu cendana dengan menggunakan metode microwave hydrodistillation, mempelajari beberapa parameter yang berpengaruh seperti pengaruh rasio antara bahan baku yang diekstrak dengan pelarut dan daya microwave yang digunakan terhadap yield minyak cendana yang dihasilkan, serta menentukan kondisi operasi optimum pada proses ekstraksi minyak cendana dengan menggunakan metode microwave hydrodistillation untuk mendapatkan yield minyak cendana yang maksimum. Metode yang digunakan untuk menentukan kondisi optimum dari masing-masing variabel adalah Response Surface Methodology (RSM). Dari hasil penelitian ini diperoleh model empiris yang sesuai dengan percobaan, dimana kondisi operasi optimum untuk ekstraksi minyak cendana dengan metode microwave hydrodistillation yang memberikan yield minyak cendana maksimum adalah pada daya microwave 601,355 W dan rasio antara bahan baku yang diekstrak dengan pelarut 0,10 g.mL-1.
EKSTRAKSI BAHAN PEWARNA ALAMI DARI KAYU MAHONI (Swietenia mahagoni) MENGGUNAKAN METODE MAE (MICROWAVE ASSISTED EXTRACTION) Gala, Selfina; Kusuma, Heri Septya; Sudrajat, Robby Ginanjar Margo; Susanto, David Febrilliant; Mahfud, Mahfud
Jurnal Teknik Kimia Vol 11, No 1 (2016): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v11i1.823

Abstract

Saat ini banyaknya pemakaian zat warna sintetis dapat disebabkan oleh faktor kemudahan memperoleh zat warna sintetis serta faktor produksi dan penggunaan zat warna alam yang belum optimal. Akan tetapi mengingat harga zat pewarna sintetis yang cenderung lebih mahal, potensi pencemaran lingkungan akibat pemakaian zat warna sintetis yang cukup besar, serta adanya kandungan azodyes tertentu dalam zat warna sintetis yang telah dilarang penggunaannya, maka pemakaian zat warna alam perlu dibudayakan. Oleh karena itu pada penelitian ini dilakukan proses ekstraksi bahan pewarna alami dari kayu mahoni dengan metode Microwave Assisted Extraction. Tujuan penelitian ini adalah untuk mengetahui pengaruh lama ekstraksi dan daya microwave yang digunakan terhadap rendemen (yield) pewarna yang diperoleh. Cacahan kayu mahoni sebanyak 10 g diekstraksi dengan menggunakan metode Microwave Assisted Extraction (MAE) dengan memvariasi daya microwave (100 W dan 380 W) dan waktu ekstraksi (10, 20, 30, 40, dan 50 menit). Filtrat yang diperoleh dipanaskan sampai diperoleh serbuk bahan pewarna. Dari hasil penelitian dapat dilihat bahwa semakin besar daya microwave yang digunakan dan semakin lama waktu yang diperlukan untuk ekstraksi maka pewarna yang dihasilkan akan semakin banyak. Dari hasil pencelupan pewarna dari kayu mahoni, bahan kertas saring dapat dicelup dengan baik dan memberikan warna coklat. Sedangkan dari hasil pengujian ketahanan luntur warna terhadap bahan kertas saring melalui pencucian dan penggosokan terlihat bahwa pencelupan dengan pewarna dari kayu mahoni memiliki ketahanan luntur yang baik. Hal ini membuktikan bahwa kandungan yang terdapat pada kayu mahoni dapat digunakan sebagai zat warna alami.
Pembuatan dan Karakterisasi Biodegradable plastic Berbasis Campuran Pati dan Selulosa Dari Limbah Jagung Ari Susanti; Heri Septya Kusuma; D.K. Zafira; A.B. Ilmi; I.E. Agustina; L Baqih; Arie Prayoga
Eksergi Vol 18, No 2 (2021)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v18i2.5341

Abstract

Foodstuffs need proper packaging to prevent spoilage. The use of conventional plastics for packaging has caused environmental problems. It is necessary to develop environmentally friendly packaging as biodegradable plastic. The purpose of this study was to isolate cellulose from corn cobs with three different procedures to determine the best procedure for producing cellulose, as evidenced by the color and results of FTIR analysis. The best cellulose yields are used to make biodegradable plastic films combined with starch and a glycerol plasticizer, sodium montmorillonite nanoclay filler, and clove leaf essential oil. The film that has been made is continued with characterization in the form of analysis of degradation ability, analysis of volatility mass fraction (%), analysis of swelling degree (%), and water solubility (%). The results of this study found that the best cellulose isolation was produced by a procedure 2. The results of the analysis of the degradation ability of the film showed that it was under SNI 7188.7: 2016 with the fastest degradation results within four days with the addition of SMMT. The results of the VMF (%) analysis showed that the presence of EO and SMMT in the composition causes the VMF (%) value to be below. The results of the SD (%) analysis show that the presence of SMMT causes the SD (%) value to increase while the addition of EO causes the SD (%) value to decrease. The results of the WS (%) analysis showed that the presence of SMMT causes the WS (%) to increase, while the addition of EO to the composition variation causes the WS (%) to decrease
Triglycerides Hydrocracking Reaction of Nyamplung Oil with Non-sulfided CoMo/γ-Al2O3 Catalysts Rismawati Rasyid; Rahmaniah Malik; Heri Septya Kusuma; Achmad Roesyadi; Mahfud Mahfud
Bulletin of Chemical Reaction Engineering & Catalysis 2018: BCREC Volume 13 Issue 2 Year 2018 (August 2018)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.13.2.734.196-203

Abstract

The purpose of this research are to study the temperature influence in hydrocracking process of the nyamplung oil (Calophyllum inophyllum) using a non-sulfided CoMo/γ-Al2O3 catalyst and to develop a simple kinetic model in interpreting the data of hydrocracking products. The experiment was carried out in a pressurized batch reactor operated pressure up 30 bar. The CoMo catalyst supported with γ-Al2O3 was prepared through impregnation method without sulfidation process. The operating temperature varied from 200 to 350 oC. The results show that the non-sulfided CoMo/γ-Al2O3 catalysts, nyamplung oil triglycerides can converted into gasoil and gasoline-like hydrocarbons. The triglyceride hydrocracking reaction of nyamplung oil followed a several stages, i.e., hydrogenation, dehydrogenation, and cracking. Based on the compounds contained in liquid product, hydrocracking reaction was dominated by decarboxylation. The products obtained in hydrocracking process of nyamplung oil are classified to gasoil (C11-C18) and gasoline (C5-C10).  The triglycerides hydrocracking reaction of nyamplung oil was assumed by following a series reaction mechanism and a simple kinetic model used for determined the kinetics constants. The highest reaction conversion is 99.10% obtained at temperature of 350 °C for 160 minutes reaction time. 
The Effect of Temperature on Extraction of Swietenia Mahagoni by Ultrasound–assisted Extraction (UAE) Method Ike Dayi Febriana; Heri Septya Kusuma; Selfina Galan; Mahfud Mahfud
ASEAN Journal of Chemical Engineering Vol 16, No 1 (2016)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1147.917 KB) | DOI: 10.22146/ajche.49673

Abstract

Azo dyes are synthetic organic dyes which have azo group (-N=N-) as chromophore. Waste of azo dyes have not been able to overcome completely so that requires solutions of natural dye. Raw material of natural dye can be obtained from Swietenia mahagoni. Natural dye can be extracted by ultrasound-assisted extraction (UAE) method. The pupose of this research is to study the factor that influence UAE. Observed factor is influence of extraction temperature to the yield of natural dye. This research was conducted using ratio of material to solvent of 0.05 g/L with extraction time at 40 minute. Extraction temperature was observed at 30, 40, and 50oC. Ultrasonic wave that used for this research at 40 kHz. The result is increasing temperature will be allow the increasing trend of yield. The result indicate that there is about 9.2748% improvement in the yield of extract due to increasing extraction temperature from 30oC to 50oC
Preliminary Study: Kinetics of Oil Extraction from Sandalwood by Microwave-assisted Hydrodistillation Heri Septya Kusuma; Mahfud Mahfud
ASEAN Journal of Chemical Engineering Vol 15, No 2 (2015)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (803.467 KB) | DOI: 10.22146/ajche.49687

Abstract

Sandalwood and its oil, is one of the oldest known perfume materials and has a long history (more than 4000 years) of use as mentioned in Sanskrit manuscripts. Sandalwood oil plays an important role as an export commodity in many countries and its widely used in the food, perfumery and pharmaceuticals industries. The aim of this study is to know and verify the kinetics and mechanism of microwave-assisted hydrodistillation of sandalwood based on a second-order model. In this study, microwave-assisted hydrodistillation is used to extract essential oils from sandalwood. The extraction was carried out in ten extraction cycles of 15 min to 2.5 hours. The initial extraction rate, the extraction capacity and the second-order extraction rate constant were calculated using the model. Kinetics of oil extraction from sandalwood by microwave-assisted hydrodistillation proved that the extraction process was based on the second-order extraction model as the experimentally done in three different steps. The initial extraction rate, h, was 0.0232 g L-1 min-1, the extraction capacity, CS, was 0.6015 g L-1, the second-order extraction rate constant, k, was 0.0642 L g-1 min-1 and coefficient of determination, R2, was 0.9597.
Hydrophobic Support: A Phenomenon of Interface Lipase Activation in Polyurethane Foam as a Heterogeneous Biocatalyst in Synthesis of Natural Flavor Ester Dwina Moentamaria; Zakijah Irfin; Achmad Chumaidi; Heri Septya Kusuma
Jurnal Teknik Kimia dan Lingkungan Vol. 6 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (376.208 KB) | DOI: 10.33795/jtkl.v6i1.253

Abstract

Biokatalis heterogen memerlukan penyangga yang sesuai melalui teknik imobilisasi enzim, terutama jika digunakan dalam industri makanan. Dalam sintesis perisa ester alami, busa poliuretan (PUF) dipilih sebagai penyangga imobilisasi lipase, karena memiliki sifat kaku inert, dan porositas tinggi. PUF perlu dilapisi dengan co-immobilized, yang terdiri dari campuran surfaktan yang aman yaitu gelatin, lecithin, PEG, MgCl2, sehingga menjadi satu kesatuan sebagai penyangga PUF hidrofobik. Interaksi hidrofobik antara lipase dan surfaktan pada PUF dapat memicu lipase yang mengaktifkan antarmuka untuk bereaksi lebih banyak dengan substrat melalui sisi aktifnya. Penelitian ini bertujuan untuk mempelajari kemampuan penyerapan PUF pada co-immobilized lipase sebagai biokatalis heterogen. Tahapan yang dilakukan adalah PUF direndam dalam co-immobilized dengan perbandingan 1:10; 1:20; 1:30 (b/b) selama 1-5 jam, kemudian dikeringkan, hasilnya direndam dalam lipase dan dikeringkan, menghasilkan biokatalis heterogen, hasil terbaik biokatalis heterogen diuji pada sintesis perisa ester alami. Hasil penelitian menunjukkan bahwa kondisi penyerapan surfaktan terbaik diperoleh selama 3 jam perendaman pada semua perbandingan PUF: co immobilized 1:10; 1:20; 1:30 (b/b) masing - masing 6,95 g/g; 23,54 g/g; 19,95 g/g, dan aktivitasnya berturut turut 2 U/g PUF; 5,86 U/g PUF; 3,34 U/g PUF. Hasil biokatalis heterogen terbaik pada rasio PUF: co immobilized 1:20 (b/b) diuji pada sintesis perisa alami melalui reaksi esterifikasi asam laurat dari minyak kelapa dan sitronelol dari minyak sereh, menghasilkan konversi 55% perisa alami citronellyl laurat. Heterogeneous biocatalysts prepared through the enzyme immobilization technique require an appropriate carrier, especially if they are used in the food industry. In the synthesis of natural ester flavor, polyurethane foam (PUF) was chosen as the lipase immobilization carrier, because it has rigid properties, inert, and high porosity. Carrier PUF needs to be coated with a food-safe surfactant known as co-immobilized, consisting of a mixture of gelatin, lecithin, PEG, and MgCl2, so that it becomes a single unit as support for hydrophobic PUF. The interaction hydrophobic between lipases and surfactants in PUF can trigger interface-activating lipases to react more with substrates through their active sites. This study aims to study the sorption capability of PUF on co-immobilized lipase as a heterogeneous biocatalyst. The steps taken were PUF was immersed in co-immobilized in a ratio of 1:10; 1:20; 1:30 (w/w) for 1-5 h, then dried, the results were soaked in lipase and dried, producing heterogeneous biocatalysts, the best results of heterogeneous biocatalysts were tested by natural flavor ester synthesis. The results showed that the best sorption conditions were obtained for 3 hours of immersion in all PUF: immobilized co ratio 1:10; 1:20; 1:30 (w/w) was 6.95 g/g; 23.54 g/g; 19.95 g/g, and each activity was 2 U/gram PUF; 5.86 U/gram PUF; 3.34 U/gram PUF. The best result of heterogeneous biocatalyst at the ratio of PUF: co immobilized 1:20 (w/w) was tested on the synthesis of natural flavors through the esterification reaction of lauric acid from coconut oil and citronellol from citronella oil, resulting in a conversion of 55% to citronellyl laurate natural flavor.
Triglycerides Hydrocracking Reaction of Nyamplung Oil with Non-sulfided CoMo/γ-Al2O3 Catalysts Rismawati Rasyid; Rahmaniah Malik; Heri Septya Kusuma; Achmad Roesyadi; Mahfud Mahfud
Bulletin of Chemical Reaction Engineering & Catalysis 2018: BCREC Volume 13 Issue 2 Year 2018 (August 2018)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.13.2.734.196-203

Abstract

The purpose of this research are to study the temperature influence in hydrocracking process of the nyamplung oil (Calophyllum inophyllum) using a non-sulfided CoMo/γ-Al2O3 catalyst and to develop a simple kinetic model in interpreting the data of hydrocracking products. The experiment was carried out in a pressurized batch reactor operated pressure up 30 bar. The CoMo catalyst supported with γ-Al2O3 was prepared through impregnation method without sulfidation process. The operating temperature varied from 200 to 350 oC. The results show that the non-sulfided CoMo/γ-Al2O3 catalysts, nyamplung oil triglycerides can converted into gasoil and gasoline-like hydrocarbons. The triglyceride hydrocracking reaction of nyamplung oil followed a several stages, i.e., hydrogenation, dehydrogenation, and cracking. Based on the compounds contained in liquid product, hydrocracking reaction was dominated by decarboxylation. The products obtained in hydrocracking process of nyamplung oil are classified to gasoil (C11-C18) and gasoline (C5-C10).  The triglycerides hydrocracking reaction of nyamplung oil was assumed by following a series reaction mechanism and a simple kinetic model used for determined the kinetics constants. The highest reaction conversion is 99.10% obtained at temperature of 350 °C for 160 minutes reaction time. 
PENGOLAHAN AIR MATA AIR MENJADI AIR MINUM YANG BERKELANJUTAN DARI MATA AIR POLAMAN KEBUMEN Sugiarto, Bambang; Kusuma, Heri Septya; Suranto, Suranto; Nyamiati, Retno Dwi
Dharma: Jurnal Pengabdian Masyarakat Vol 4, No 2 (2023): November
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/dlppm.v4i2.11255

Abstract

Tujuan dari pengabdian ini adalah untuk memberikan pengetahuan tentang teknologi pengolahan air dari mata air Polaman di Dusun Polaman, Desa Kebakalan, Karanggayam, Kebumen, Jawa Tengah, dengan tujuan meningkatkan kemampuan Mitra UKM dalam mengolah air menjadi produk air kemasan yang siap dikonsumsi, serta meningkatkan nilai jual air tersebut. Mata air Polaman merupakan sumber air utama bagi penduduk di daerah tersebut, tetapi kualitas airnya belum mencapai standar yang aman untuk dikonsumsi. Pengabdian ini melibatkan implementasi teknologi pengolahan air dalam beberapa tahap. Tahap pertama adalah melakukan survei awal untuk memahami kondisi sumber air dan kebutuhan masyarakat setempat. Kemudian, dipilih metode pengolahan air yang sesuai dengan kondisi dan kebutuhan tersebut, yaitu dengan memanfaatkan teknologi Dry Heat Sterilization with Combination Membrane UV. Tim pengabdian juga memberikan pelatihan, pendampingan, dan sosialisasi terkait pengolahan air dengan sistem membran seperti yang telah disebutkan sebelumnya. Dengan penerapan sosialisasi pengolahan air ini, diharapkan kualitas air dari mata air Polaman dapat ditingkatkan sehingga aman untuk dikonsumsi oleh penduduk setempat. Selain itu, diharapkan juga dapat meningkatkan kesadaran masyarakat akan pentingnya pengolahan air yang aman dan penggunaan air dengan baik.
Kinetics study of oil extraction from Citrus auranticum L. by solvent-free microwave extraction Kusuma, Heri Septya; Amelia, Prilia Dwi; Admiralia, Cininta; Mahfud, Mahfud
Communications in Science and Technology Vol 1 No 1 (2016)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.1.1.2016.3

Abstract

Citrus and its oil are of high economic and medicinal value because of their multiple uses, such as in the food industry, cosmetics and folk medicine. The aim of this study is to investigate the potential of solvent-free microwave extraction for the extraction of essential oils from Citrus auranticum L. peels. Specifically, this study verifies the kinetics based on second-order model and mechanism of solvent-free microwave extraction of Citrus auranticum L. peels. Solvent-free microwave extraction is used to extract essential oils from Citrus auranticum L. peels. The initial extraction rate, the extraction capacity and the second-order extraction rate constant were calculated using the model. Using a three-step experimental design of the kinetics of oil extraction from Citrus auranticum L. peels by solvent-free microwave extraction, this study showed that the extraction process was based on the second-order extraction model. The initial extraction rate (h), the extraction capacity (CS), the second-order extraction rate constant (k), and coefficient of determination (R2) was 0.7483 g L-1 min-1, 0.7291 g L-1, 1.4075 L g-1 min-1 and 0.9992, respectively.
Co-Authors A.B. Ilmi Achmad Chumaidi Achmad Chumaidi, Achmad Achmad Roesyadi Admiralia, Cininta Aldri Frinaldi Amanda Elliora Arista Amelia, Prilia Dwi Anak Agung Istri Sri Wiadnyani Ari Susanti Arie Prayoga Ayu Andira Bambang Sugiarto Bambang Sugiarto D.K. Zafira Destyana Eky Rahayu Didi Saidi Ganing Irbah Al Lantip I.E. Agustina Ike Dayi Febriana Jihan Rona Fauziyah Ahmad Kalya Dinda Az-Zahra L Baqih Lailatul Qadariyah Luke Arinda Febryola Mahfud Mahfud Mahfud Mahfud Mahfud Mahfud Maula, Fikaputri Rohmatul Novita Anastasya Fitri Nyamiati, Retno Dwi Rahmaniah Malik Rahmaniah Malik Retno Dwi Nyamiati Rismawati Rasyid Selfina Gala Selfina Galan Shinta Justicia Dellarohita Sudrajat, Robby Ginanjar Margo Suranto Suranto Susanto, David Febrilliant Xenna Mutiara Zakijah irfin Zakijah Irfin