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All Journal Buletin Peternakan Jurnal Rekayasa Proses International Journal of Renewable Energy Development Teknotan: Jurnal Industri Teknologi Pertanian Jurnal Keteknikan Pertanian Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Journal of Engineering and Technological Sciences agriTECH Indonesian Journal of Science and Technology Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Rekayasa Proses INTERNATIONAL JOURNAL OF NURSING AND MIDWIFERY SCIENCE (IJNMS) Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Jurnal Agricultural Biosystem Engineering Journal of Scientific Research, Education, and Technology Aceh International Journal of Science and Technology Education, Language, and Arts: Jurnal Pengabdian Kepada Masyarakat International Journal of Sociology and Law Jurnal Rekayasa Proses
Agus Haryanto
Jurusan Teknik Pertanian, Fakultas Pertanian, Universitas Lampung Jl Soemantri Brojonegoro No. 1 Kampus Gedong Meneng, 35145 Bandar Lampung
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary Other

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First Order Kinetics of Biodiesel Synthesis Using Used Frying Oil through Transesterification Reaction Agus Haryanto; Amieria Citra Gita; Tri Wahyu Saputra; Mareli Telaumbanua
Aceh International Journal of Science and Technology Vol 9, No 1 (2020): April 2020
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (829.615 KB) | DOI: 10.13170/aijst.9.1.13297

Abstract

This research aims to study the first-order kinetics of biodiesel production from used frying oil (UFO) through transesterification with methanol. Used frying oil was collected from fried peddlers around the campus of the University of Lampung. Technical grade methanol and NaOH catalyst were purchased from a local chemical supplier. The experiment was carried out with 100 ml of UFO at various combinations of oil to methanol molar ratio (1:4, 1:5, and 1:6), reaction temperatures(30 to 55oC, the ramping temperature of 5o C), and reaction time of 0.25 to 10 minutes. First-order kinetic was employed using 126 data pairs (87.5%). The acquired kinetic model was validated using 18 data sets (12.5%) observed at a reaction time of eight min. Results show that biodiesel yield was increased with reaction time, its molar ratio, and temperature. The maximum return of 78.44% was achieved at 55oC and molar ratio of 1:6. The kinetic analysis obtains the reaction rate constant (k) in the range of 0.045 to 0.130. The value of k increases with the reaction temperature and molar ratio. The analysis also reveals the average activation energy (Ea) of the UFO transesterification reaction with methanol and NaOH catalyst to be 21.59 kJ/mol. First-order kinetic is suitable to predict biodiesel yield from UFO because of low %RMSE (3.39%) and high R2 (0.8454
MATHEMATICAL MODEL OF PHYSICAL PROPERTIES CHANGE OF COCONUT SAP IN THE VACUUM EVAPORATOR Febryan Kusuma Wisnu; Sri Rahayoe; Rizza Wijaya; Mareli Telaumbanua; Agus Haryanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 2 (2021): Juni
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i2.252-262

Abstract

The potential of brown sugar as a substitute for granulated sugar is enormous considering the abundant coconut sap production. However, the quantity of brown sugar production through the traditional method is one of the main obstacles. This study used a vacuum evaporator that emphasizes the hygienic and effective mass production of brown sugar. For this reason, it is necessary to approach changes in the physical properties of sap juice during the cooking process. This knowledge is indispensable in the cooking process, which involves the proper evaporation and crystallization of brown sugar. This research is devoted to determining the viscosity, density, and dissolved solids expressed in Brix and proposes a mathematical model to predict the physical properties during the evaporation process of brown sugar as a function of the initial concentration the solution before proceeding to the crystallization process. Results confirm that the prediction model for Brix is Cθ=(Co–Ce)·exp(0.0067·t)+Ce, the model for viscosity µθ=µo·exp(0.011·t), and ρө=(0.44996·t)+ρ0 for the density prediction model. The resulted mathematical model can accurately predict the rate of change in coconut sap's physical properties, indicated by the high coefficient of determination (R2). Keywords : brix, brown sugar, density, vacuum evaporator, viscosity
The Effect of Biochar from Oil Palm Empty Fruit Bunches (EFB) on the Efficiency of Urea Fertilizer in the Production of Chinese Cabbage (Brassica rappa var. parachinesis L.) Sisi Agustin; Agus Haryanto; Sugeng Triyono
Jurnal Agricultural Biosystem Engineering Vol 2, No 1 (2023): Maret 2023
Publisher : abe.fp.unila.ac.id

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Abstract

This research study aims to determine proper composition of biochar, to find out the efficiency of fertilizer used, and to evaluate the effect of interaction between biochar and urea fertilizer used on the cultivation of green mustard.  This study used Complete Randomized Design (CRD) consisting of 2 factors with factorial arrangement.  The first factor was biochar dosage consisting of: control (without biochar), 5 tons/ha, 7.5 tons/ha, and 10 tons/ha.  The second factor was urea dosage consisting of: control (without urea), 75 kg/ha, 125 kg/ha, and 200 kg/ha.  All treatment combinations were replicated 3 times so there were 48 experimental units obtained.  The parameters observed were: soil properties, biochar properties, plant height, leaf width, number of leaves, canopy area, shoot fresh weight, shoot dry weight, root fresh weight, root dry weight, total fresh weight, water consumption, water productivity, and fertilizer productivity.The addition of biochar is proven to increase the productivity of mustard plants. The use of urea fertilizer had no significant effect, presumably because of the low soil organic matter content. The interaction between biochar doses and urea fertilizer doses was not significant and only significant for the fertilizer productivity parameters. Research also revealed that the optimal dose of biochar for mustard greens is 5 tons/ha, giving an average yield of 88.25 g/plant and fertilizer productivity of 210.41%. Keywords: Biochar, Dose, Green Mustard, Oil Palm Empty Fruit Bunch (OPEFB), Urea Fertilizer.
Pelatihan Pemanfaatan Bioslurry di Desa Rejomulyo, Kecamatan Jati Agung, Lampung Selatan Mareli Telaumbanua; Febryan Kusuma Wisnu; Siti Suharyatun; Agus Haryanto; Winda Rahmawati; Sri Waluyo
Education Language and Arts (ELA) Vol. 1 No. 1 April (2022): Education, Language, and Arts: Jurnal Pengabdian Kepada Masyarakat
Publisher : Jurusan Pendidikan Bahasa dan Sastra Indonesia, FKIP Universitas Lampung

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Abstract

Biogas technology from floating drum-type cow dung made in Rejomulyo village, Jati Agung sub-district, South Lampung, can produce biogas for daily fuel. However, the residual waste or biogas dregs (sludge/bio-slurry) have not been utilized, only disposed of at a waste disposal site. This community service activity aims to increase the added value of biogas waste by utilizing sludge/bio-slurry for organic fertilizer in vegetable cultivation in yards and gardens. The activity was carried out using the extension method for making vegetable cultivation pilot units using sludge/bio-slurry. Furthermore, through Gapoktan and Agricultural Extension as companions, it can be developed in people's homes that have a biogas digester. The conclusion is that cow dung as waste from livestock business has been successfully converted into biogas and slurry. The success of this training is indicated by the high enthusiasm of the participants and the ongoing implementation of liquid fertilizer (bio-slurry).
Uji Kinerja Alat Penghancur Kohe Kambing Tipe Basah Aldi Saputra; Budianto Lanya; Siti Suharyatun; Agus Haryanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 4 (2021): Desember
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i4.440-448

Abstract

Goat manure is one of the manure which is widely used in agriculture. Due to its hard physical nature, goat manure needs to be crushed before being applied to facilitate the decomposition process. Currently, there is a wet type of goat dung grinder or crusher used by the community. This study aims to test the performance of the goat manure crusher based on the engine rotation speed (rpm). The research was conducted using 3 different rotation speed of the blade shaft, namely 968 rpm, 1208 rpm, 1454 rpm. The experiment parameters included working capacity, fuel consumtion, and degree of crushing. The results showed that the wet type goat manure crusher had the best working capacity at 1208 rpm blade rotation with 255,78 kg/h working capacity, 1.43 lt/h fuel consumption, and 99.3% crushing uniformity. Keywords: manure, rpm, wet goat manure crusher
APLIKASI BUDIDAYA SAYURAN HIDROPONIK SEBAGAI SARANA PEMBELAJARAN ANAK USIA DINI Agus Haryanto; Mareli Telaumbanua; Sugeng Triyono; Siti Suharyatun
Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Vol 7 No 2 (2023)
Publisher : Lembaga Penelitian dan Pengabdian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jss.v7i2.259

Abstract

Kegiatan ini bertujuan untuk mengenalkan dan mengaplikasikan budidaya sayuran menggunakan teknologi hidroponik kepada anak-anak usia dini. Kegiatan dilaksanakan di TK IT Insan Taqwa di Desa Sidosari, Kecamatan Natar, Kabupaten Lampung Selatan. Kegiatan dilakukan dengan merancang, membuat dan menginstal perangkat budidaya hidroponik sistem ABC menggunakan pipa PVC 3 inchi sepanjang 16 m yang dilengkapi dengan ember kapasitas 80 L, pompa 125 W, dan timer analog 15 menitan. Setelah instalasi perangkat hidroponik, kegiatan dilanjutkan dengan pelatihan budidaya hidroponik yang disertai praktek penanaman sayuran selada. Hasil kegiatan menunjukkan bahwa setelah kurang lebih 4minggu, tanaman selada tumbuh dengan baik yang ditunjukkan oleh figur tanaman yang segar dan besar. Pada akhir minggu ke-5, tanaman selada dipanen oleh para. Dapat disimpulkan bahwa kegiatan ini berjalan dengan sukses yang ditunjukkan dari indikator keberhasilan yang meliputi (1) tersedianya satu unit kit hidroponik,(2) terlaksananya kegiatan sosialisasi dan praktek budidaya hidroponik, (3) terlaksananya budidaya hidroponik yang dikerjakan oleh guru dan siswa TK IT Insan Taqwa dari penanaman hingga panen.
Pengaruh Tipe Sistem Hidroponik dan Ukuran Wadah Nutrisi Terhadap Hasil Buah Tomat Ceri (Lycopersicum esculentum M.) Disca Anggi Pratiwi; Sugeng Triyono; Winda Rahmawati; Agus Haryanto
Jurnal Agricultural Biosystem Engineering Vol 2, No 3 (2023): September 2023
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v2i3.7894

Abstract

Cherry tomatoes (Lycopersicum esculentum M.) are a type of tomato that many people like because they taste sweet and are rich in vitamins. However, conventionally cherry tomatoes have not been widely cultivated in Indonesia because besides of susceptible to disease, cultivation techniques in open fields are not well understood by many farmers either. This research aims to determine the appropriate size of the nutrient jar and hydroponic system. The experiment used a completely randomized design (CRD) which was arranged factorially with three replications. The first factor is the size of the nutrition jar which consists of 3 levels, namely 500 mL (P1), 1500 mL (P2), and 2500 mL (P3). The second factor was the type of hydroponic system consisting of Wick System (HW), Dry System (HD), and Floating System (HF). The results showed that the nutrient jar size had a positive effect on evapotranspiration, number of leaves, root length, number of flowers, fruit weight, and water content of the fruit.  The hydroponic system significantly affected the number of flowers, root length, fruit weight, and in general the Wick System (HW) had better performance compared to the Dry system (HD) and the Floating system (HF).  The interaction of the two treatment factors was not significant.  The data showed that the 1500mL Wick System (P2HW) was the most optimum treatment, based on the parameters of evapotranspiration/consumption of nutrient (2.6-3 liters), number of leaves 17 leaves), root length (23.4-25.1 cm), and fruit weight (14.1-15.22 grams) as well. Keyword : Cherry tomatoes (Lycopersicum esculentum M.), hydroponic, nutrient jar size. wick system
Characterization of Traditional Market Solid Waste (TMSW) and Its Recycling Potential (Case Study : Traditional Markets in Bandar Lampung) Muhammad Haviz; Dewi Agustina Iryani; Puspita Yuliandari; Udin Hasanudin; Elhamida Rezkia Amien; Agus Haryanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 1 (2022): March
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i1.70-78

Abstract

Solid waste has always been a problem for developing countries. In Bandar Lampung, the traditional market is the second largest contributor of solid waste, after households. Data for Traditional Market Solid Waste (TMSW) composition and generation rate in Bandar Lampung is rarely found, even though, data is needed to write the policy for TMSW management and its recycling potential. This research aims to provide data on TMSW composition, generation rate and chararacteristic in Bandar Lampung, also its recycling potential. The sample from 10 of 31 traditional markets in Bandar Lampung is collected for 8 consecutive days in morning and afternoon. Then, the sample was processed to obtain its composition, generation and density. 48.06% of TMSW compositions is donated by vegetable. Meanwhile, metal is rarely found in traditional markets, with only 0.37%. The average density of TMSW is 180.11 kg/m3, while Kangkung Market has the highest density with 237.84 kg/m3 and Cimeng Market has the lowest TMSW density with 123.07 kg/m3. The generation rate of TMSW is 53,602.35 kg/day. Biodegradable wastes from traditional markets in Bandar Lampung, with 53% water contents, can be potentially recycled by composting and/or anaerobic digester because of its economic value and characteristic. Keywords:   Recycling, Solid Waste Management, Traditional Market Solid Waste, Waste Characterization
Cover Vol 13 No 1, March 2024 Agus Haryanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.%p

Abstract

Production and Characterization of Andong Bamboo (Gigantochloa pseudoarundinacea (Steudel) Widjaja) Pellets from Various Stem Parts Wahyu Hidayat; Jacky Michael Pah; Lisman Suryanegara; Udin Hasanudin; Agus Haryanto; Christine Wulandari
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 11, No 4 (2022): Desember 2022
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v11i4.713-723

Abstract

Bamboo is an abundant biomaterial having important potential as a resource for bioenergy development. In this study, the potential of andong (Gigantochloa pseudoarundinacea (Steudel) Widjaja) bamboo for pellet production was evaluated. Some properties of bamboo pellets as density, moisture content, moisture adsorption, compressive strength, and heating value were analysed. The results indicated that bamboo is highly prospective to be explored for fuel pellets commercially. All characteristics of pellet made of bamboo fulfilled the requisites of the commercial pellets. The heating value of the pellets achieved the minimum standard for commercial pellets along with SNI 8675:2018 (>17,5 MJ/kg). The effects of culm parts on the moisture content, density, moisture adsorption were not significant. There were significant differences in compressive strength and heating value between bamboo pellets produced from different culm parts. This research showed potential of andong bamboo pellet for bioenergy resource. Keywords:   Andong (Gigantochloa pseudoarundinacea), Biopellet, Mechanical Properties, Physical Properties
Co-Authors Afrian, Chandra Agata Desinta Yoanma Aldi Saputra Alim Fadila Rahman Amieria Citra Gita Amieria Citra Gita Anak Agung Gede Sugianthara Bagus Saputra Budianto Lanya Budianto Lanya Christine Wulandari David SS Marpaung Dermiyati Dermiyati Dewi Agustina Iryani dewi Agustina Iryani Dewi Agustina Iryani Dewi Agustina Iryani, Dewi Agustina Disca Anggi Pratiwi Dwi Cahyani Dwi Cahyani Dwi Dian Novita Dwi Haryono Dyah Isworo Eka Noer Soe'mah Eka Noer Soe'mah Elhamida Rezkia Amien Eza Yolan Yuswansyah Febryan Kusuma Wisnu Febryanto, Indra Gumay Gita, Amiera Citra Gusri Akhyar Ibrahim Hizami Ch Anwar Indah Kusmindarti Indra Gumay Febryano Irma Thya Rani Irwan Sukri Banuwa Jacky Michael Pah Jamalam Lumbanraja Jiho Yoo Karina Gracia Agatha Tambunan Khoiril Anam Kusuma Adhianto Liman Liman Lisman Suryanegara Lutfi Wahyuni Mareli Telaumbanua Melya Riniarti Mirwan Saputro Mochamad Zakky Muhamad Inu Fauzan Muhammad Agus Windra Muhammad Amin Muhammad Haviz Muhtarudin muhtarudin Mulyani, Yessi Murdapa, Fauzan Nomi Setyowati Nur Soemah, Eka Oktafri Oktafri Ovita Yozana Puspita Yuliandari Rahmi Adi Bazenet Raizummi Fil’aini Rani, Irma Tya Ristanti Ristanti Rivan Okfrianas Rizky Wahyuni Rizza Wijaya Sandi Asmara Sangdo Kim Savinda Afista Seldi Prayoga Shilvia Vera Sinaga Shintawati Shintawati Shintawati, Shintawati Sigit Prabawa Sihyun Lee Sisi Agustin Siti Asfiatul Mukaromah Siti Mutiara Ridjayanti Siti Suharyatun Sri Hidayati Sri Rahayoe Sri Waluyo Sugeng Triyono Suharyadi Suharyadi Syamsiar, Syamsiar Tamrin Tamrin Tamrin, Tamrin Titin Yulianti Tri Wahyu Saputra Tri Wahyu Saputra Tri Yulianto Tri Yulianto Ucok Hasiholan Udin Hasanudin Ully Silviana Viffit Desiyana Wahyu Hidayat Wahyu Ratnaningsih Warji Warji Winda Rahmawati Winda Rahmawati Winda Rahmawati Winnugroho Wiratman, Manfaluthy Hakim, Tiara Aninditha, Aru W. Sudoyo, Joedo Prihartono Wulan Sari Zelzha Arinnesia Varanita