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All Journal Indonesian Journal of Geography Jurnal Ilmu Lingkungan Agrikultura Teknotan: Jurnal Industri Teknologi Pertanian Jurnal AGROTEKNOLOGI JURNAL TEKNOLOGI LINGKUNGAN Jurnal Keteknikan Pertanian Cropsaver : Journal of Plant Protection Indonesian Journal of Forestry Research SITEKIN: Jurnal Sains, Teknologi dan Industri Journal of Degraded and Mining Lands Management Jurnal Keteknikan Pertanian Tropis dan Biosistem Arena Hukum Prosiding Semnastek Register: Jurnal Ilmiah Teknologi Sistem Informasi Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) JURNAL SUMBER DAYA AIR ZIRAA'AH MAJALAH ILMIAH PERTANIAN Proceedings Series on Physical & Formal Sciences Jurnal Ilmu Kehutanan Jurnal Indonesia Sosial Sains PROSIDING SEMINAR NASIONAL PENELITIAN DAN PENGABDIAN KEPADA MASYARAKAT (SNPPM) UNIVERSITAS MUHAMMADIYAH METRO Jurnal Manusia dan Lingkungan Indonesian Journal of Forestry Research
Chay Asdak
Jurusan Teknik Pertanian, Fakultas Teknologi Industri Pertanian, Universitas Padjadjaran
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology 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 Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics Public Health Social Sciences Other

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Evaluation of nitrate in shallow groundwater at Pasirkoja of Bandung City, Indonesia, using the pollution index and the nitrate pollution index methods Naily, Wilda; Sunardi, Sunardi; Asdak, Chay; Hendarmawan, Hendarmawan
Journal of Degraded and Mining Lands Management Vol. 11 No. 4 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.1114.6251

Abstract

Pasirkoja is an old residential area in Bandung City currently densely populated. Some people in Pasirkoja use shallow groundwater for washing and bathing, and some for cooking. Pollutants very easily pollute shallow groundwater, and nitrate is one of the pollutants found in shallow groundwater in residential areas. The water quality status was determined using the pollution index (PI) method based on a Decree of the Minister of Environment Number 115 of 2003 and the nitrate pollution index (NPI) to ascertain the shallow groundwater quality in Pasirkoja of Bandung City, Indonesia. The variables used in the PI method were pH, turbidity, total dissolved solids (TDS), nitrate, and nitrite, while the NPI method used the nitrate parameter. Shallow groundwater samples were taken during the rainy season and dry season. Based on the PI method, the results showed that the quality status of shallow groundwater at the research location is mostly lightly polluted in the rainy and dry seasons. Meanwhile, based on the NPI method, most are clean (not polluted). Differences in the quality status of shallow groundwater depend on the environmental conditions around which shallow groundwater samples were taken. The research results also showed that, based on the PI method, nitrate is not the main parameter that determines pollution at the research location.
A NATIONAL POLICY ON INDONESIA’S INTEGRATED WATER RESOURCE CONSERVATION MANAGEMENT Chay Asdak; Yulizar; Subiyanto
Indonesian Journal of Forestry Research Vol. 10 No. 2 (2023): Indonesian Journal of Forestry Research
Publisher : APTKLHI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59465/ijfr.2023.10.2.151-162

Abstract

Changes in global precipitation would affect Indonesia to improve its water resource management system. As most watersheds are in a critical stage nowadays, it is urgent to develop a new plan and policy on water conservation that integrates the most important parameters reasonably. It has the purpose of ensuring that water resources are available for all activities and purposes within the area, especially for future periods. Integrated Water Resources Conservation Management is one of the promising approaches that is being mainly developed, particularly through the participation of all stakeholders. This participation brings equal responsibility to protect and sustainably manage the water resources, which might differ from one area to another in Indonesia. This study shows that it is important to bring up local wisdom practices on water conservation management. These could help overcome the problems related to water management in different locations in Indonesia and encourage all the stakeholders to take responsibility. All the inputs from the stakeholders are very helpful to identify the strategy at the national level, and thus it would minimize the misinterpretation between local and national levels in terms of regulation or policy. Furthermore, the approach strategies provided in this paper could improve the water national policy in Indonesia and minimize the negative potential impacts due to the lack of precipitation in the upcoming years.
Inovasi Ekonomis Pengolahan Bio-Briket Berbahan Limbah Ampas Kopi untuk Meningkatkan Pendapatan Petani di Pedesaan Garut Ihsan, Daffa Aufa; Prawiranegara, Boy Macklin Pareira; Asdak, Chay; Sugandi, Wahyu Kristian
Prosiding Semnastek PROSIDING SEMNASTEK 2024
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Penelitian ini bertujuan untuk menganalisis potensi pengembangan bio-briket dari limbah ampas kopi sebagai solusi ekonomi di daerah pedesaan Garut, khususnya di Sub DAS Cikamiri, Desa Tanjungkarya. Metode deskriptif digunakan dalam penelitian ini, yang berlangsung dari Juli 2023 hingga Februari 2024, dengan pengumpulan data melalui survei pengamatan langsung di lokasi penelitian. Hasil penelitian menunjukkan bahwa proses pembuatan briket melalui 17 tahapan operasi memungkinkan pemanfaatan limbah ampas kopi dan serbuk gergaji kayu menjadi produk bernilai tinggi. Selain itu, analisis biaya produksi menunjukkan harga pokok produksi pertahun sebesar Rp19.489.996, dengan kapasitas produksi mencapai 2880 kg per tahun. Berdasarkan perhitungan harga pokok produksi dan pendapatan bersih, usaha bio-briket berbahan limbah ampas kopi ini menunjukkan keuntungan yang layak dengan nilai Benefit Cost Ratio (BCR) sebesar 1,77. Kesimpulannya, pengembangan bio-briket dari limbah ampas kopi memiliki potensi yang besar dalam mengurangi limbah, meningkatkan pendapatan petani, dan mendukung ketahanan energi di daerah pedesaan Garut.Kata kunci: Bio-briket, Limbah ampas kopi, Potensi ekonomi, Daerah pedesaan, Garut.
Analisis Ekonomi Pengolahan Limbah Ceri Kopi Menjadi Teh Cascara Dengan Metode Pengeringan Yang Berbeda: Studi Kasus di Sub DAS Cikamiri, Desa Cisarua, Kecamatan Samarang, Kabupaten Garut Prawiranegara, Boy Macklin Pareira; Asdak, Chay; Nugroho, Chrismaria Putri; Widyasanti, Asri
Prosiding Semnastek PROSIDING SEMNASTEK 2024
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Penelitian ini bertujuan untuk menganalisis potensi teh cascara dari limbah kulit ceri kopi dalam menurunkan jumlah limbah dan nilai ekonomisnya di Sub DAS Cikamiri, Kabupaten Garut. Metode penelitian yang digunakan adalah metode deskriptif denganpengumpulan data survei dan observasi langsung di lapangan dari bulan November 2023 hingga Januari 2024. Hasil penelitian menunjukkan bahwa pengolahan limbah kulit ceri kopi menjadi teh cascara mampu menurunkan jumlah limbah hingga 90%,dengan lima kali produksi yang menghasilkan 1,5 ton limbah kulit ceri kopi, dimana 10% dapat diolah menjadi produk teh cascara. Selain itu, analisis nilai ekonomi menunjukkan bahwa baik pengeringan menggunakan sinar matahari maupun Fooddehydrator menghasilkan nilai B/C ratio yang positif, menunjukkan bahwa pengolahan teh cascara merupakan investasi yang menguntungkan secara ekonomis. Berdasarkan hasil yang diperoleh, dapat disimpulkan bahwa pengolahan limbah kulit ceri kopi menjadi teh cascara adalah solusi yang efektif dalam mengurangi limbah dan menciptakan produk bernilai ekonomis. Saran untuk penelitian selanjutnya adalah meningkatkan kesadaran konsumen tentang manfaat teh cascara dan investasi dalam infrastruktur pengolahan yang lebih efisien. Dengan demikian, praktik pengelolaan limbah di daerah produsen kopi dapat ditingkatkan untuk mendukung keberlanjutanlingkungan dan ekonomi lokal.Kata kunci: Teh Cascara, Limbah Kulit Ceri Kopi, Pengurangan Limbah, NilaiEkonomis, Pengolahan Berkelanjutan
Analisis Tingkat Kerawanan Banjir Bandang Menggunakan Metode Flash Flood Potential Index (Studi kasus: Sub DAS Cipeles, DAS Cimanuk) Suryadi, Dede; Asdak, Chay; Kendarto, Dwi Rustam
Teknotan: Jurnal Industri Teknologi Pertanian Vol 18, No 3 (2024): TEKNOTAN, Desember 2024
Publisher : Fakultas Teknologi Industri Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jt.vol18n3.10

Abstract

Sub DAS Cipeles merupakan wilayah yang secara rutin mengalami kejadian banjir bandang setiap tahun pada musim penghujan. Dampak-dampak yang ditimbulkan dari banjir bandang tersebut meliputi korban jiwa, kerusakan pada lahan pertanian, fasilitas umum, dan organisasi masyarakat. Penelitian ini bertujuan untuk melakukan analisis mendalam dan pemetaan tingkat kerawanan terhadap banjir bandang di Sub DAS Cipeles, serta untuk menjelaskan dan menggambarkan kondisi wilayah ini berdasarkan faktor-faktor yang berperan dalam terjadinya banjir bandang. Metode yang digunakan dalam penelitian ini adalah metode FFPI (Indeks Potensi Banjir Bandang), sebuah metode analisis tingkat kerawanan terhadap banjir bandang yang menggunakan lima faktor.Faktor-faktor yang digunakan meliputi kemiringan lereng, nilai angka kurva (CN), indeks curah hujan sebelumnya (API), potensi pergerakan tanah, dan jenis litologi batuan. Setiap parameter yang diberi bobot dan skor menggunakan metode penilaian (metode pembobotan dan penilaian), kemudian ditumpang tindihkan (overlay) untuk menghasilkan nilai FFPI. Hasil utama dari penelitian ini adalah peta kerawanan banjir bandang yang mempertahankan tingkat kerawanan di berbagai wilayah di Sub DAS Cipeles. Peta ini dapat digunakan sebagai alat mitigasi bencana yang efektif untuk mengurangi dampak yang mungkin timbul akibat banjir bandang.
The Application of Nanobubble Technology in Hydroponic SWU-01 to Increase Dissolved Oxygen Concentration and Lettuce Plant Growth Asep Yusuf; Chay Asdak; Mimin Muhaemin; Eza Zahrotul Fuadah; Sophia Dwiratna; Muhammad Achirul Nanda; Anto Tri Sugiarto; Hilman Syaeful Alam
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1395-1402

Abstract

Hydroponic model SWU-01 is a new hydroponic system innovation that regulates watering automatically and independently by utilizing gravity and Archimedes' law. Dissolved oxygen concentration in SWU-01 is only around 3-4.2 mg/L. DO values can be increased by applying nanobubble technology. Ultrafine bubble or nanobubble is a gas bubble in a liquid that has a diameter of <200 nm. The purpose of this study was to determine the effect of nanobubble on dissolved oxygen concentration and growth of lettuce plants cultivated with SWU-01 hydroponics. The experiment used a one-factor randomized complete block design, namely intermittent administration of nanobubble for 15 min every 3 day (P1) and 7 days (P2), and without nanobubble (P0l). The results obtained based on the ANOVA test at the 5% level with the Least Significant Difference (LSD) follow-up test, namely the parameters of fresh weight and number of leaves of lettuce P1 significantly different from P0 and P2, and no significant differences were found in root length, canopy width, and plant height. The P1 treatment is more effective in increasing dissolved oxygen concentration, leaf count, and fresh weight of lettuce produced in lettuce cultivation using the SWU-01 hydroponic system. Keywords: Dissolved oxygen, Hydroponics, Lettuce, Nanobubbles, Plant growth.
Pengolahan Limbah Kopi Menjadi Teh Cascara Sebagai Produk Prioritas Berdasarkan Metode AHP di Sub DAS Cikamiri Nugroho, Chrismaria Putri; Prawiranegara, Boy Macklin Pareira; Asdak, Chay; Widyasanti, Asri; Kendarto, Dwi Rustam
Proceedings Series on Physical & Formal Sciences Vol. 8 (2025): Prosiding Seminar Nasional Fakultas Pertanian dan Perikanan
Publisher : UM Purwokerto Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/pspfs.v8i.1473

Abstract

Pengelolaan limbah kopi yang tidak optimal telah menjadi salah satu permasalahan utama di sektor pertanian, khususnya di daerah penghasil kopi seperti Sub DAS Cikamiri. Limbah kopi, seperti kulit kopi, sering kali hanya dibuang tanpa pemanfaatan yang maksimal, sehingga berpotensi mencemari lingkungan sekaligus menghilangkan nilai tambah ekonomi.Penelitian ini bertujuan untuk mengevaluasi teh cascara sebagai produk prioritas dalam pengolahan limbah kopi di Sub DAS Cikamiri dengan menggunakan metode Analytical Hierarchy Process (AHP). Sub DAS Cikamiri, yang merupakan wilayah penghasil kopi utama, menghadapi permasalahan pengelolaan limbah kopi yang tidak terkelola dengan baik, menyebabkan dampak lingkungan yang negatif. Pemanfaatan kulit kopi sebagai bahan baku teh cascara dapat menjadi solusi dalam mengurangi limbah sekaligus meningkatkan nilai tambah produk.Metode AHP diterapkan untuk menentukan prioritas produk berdasarkan sejumlah kriteria, yaitu ketersediaan tenaga kerja, biaya investasi, nilai jual, dan ketersediaan bahan baku. Hasil analisis menunjukkan bahwa teh cascara memiliki potensi pasar yang signifikan serta mampu berkontribusi pada peningkatan pendapatan petani kopi, mendukung praktik pertanian berkelanjutan, dan menciptakan lapangan kerja baru. Penelitian ini memberikan rekomendasi strategis dalam optimalisasi pemanfaatan limbah kopi di Sub DAS Cikamiri, yang diharapkan dapat meningkatkan kesejahteraan masyarakat setempat sekaligus mendukung keberlanjutan lingkungan.
Penentuan Prioritas Produk Berbahan Limbah Kopi Menggunakan Metode AHP di Sub DAS Cikamiri, Garut, Jawa Barat: Prioritization of Coffee Waste-Based Products Using AHP Method in Cikamiri Sub Watershed, Garut, West Java Nugroho, Chrismaria Putri; Prawiranegara, Boy Macklin Pareira; Asdak, Chay; Widyasanti, Asri; Kendarto, Dwi Rustam
JURNAL AGROTEKNOLOGI Vol. 18 No. 2 (2024)
Publisher : Faculty of Agricultural Technology, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/j-agt.v18i2.53266

Abstract

The suboptimal management of coffee waste affected a significant challenge because the coffee waste is often discarded without being utilized optimally. As a long-term impact, this can cause environmental pollution and loss of economic opportunities from coffee waste. A similar case occurred in the Cikamiri Sub Watershed, Garut, West Java. So it needed to be carried out by applying coffee waste to potential products such as cascara tea, liquid organic fertilizer, and bio-briquettes, but the product priority is not yet known. So that, this study aims to determine the priority for processing coffee waste into high-value products, such as cascara tea, liquid organic fertilizer (POC), and bio-briquettes using the Analytic Hierarchy Process (AHP) method in the Sub DAS Cikamiri, Garut, West Java. AHP was chosen for its ability to handle multi-criteria decision-making in a structured manner. The criteria used in this study include labor availability, investment cost, high market value, and material availability. The result showed that cascara tea (prevalence value of 68.6%) was the highest-priority product, followed by liquid organic fertilizer (prevalence value of 20.7%) and bio-briquettes (prevalence value of 10.6%). This study indicated that cascara tea had high market potential, while liquid organic fertilizer and bio-briquettes can be developed by considering environmental impact and sustainability. This research provides strategic recommendations to optimize coffee waste utilization, focusing primarily on cascara tea production to enhance economic value and positive environmental impacts. Keywords: analytical hierarchy process, bio-briquettes, cascara, coffee waste, liquid organic fertilizer
Water Balance Analysis Using the Thornthwaite-Mather Method as a Basis for Cropping Pattern Development in Dry Land Sophia Dwiratna; Yogina Lestari Ayu; Chay Asdak; Nabila Aura Pithaloka
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 2 (2025): April 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i2.547-559

Abstract

Soil water availability is crucial for supporting plant growth, especially in drylands that rely on rainfall as the primary source to meet plant water needs. Rainfall variability complicates the prediction of planting times and the optimization of cropping patterns. This condition negatively impacts productivity and increases the risk of flooding and landslides. This study aims to analyze the land water balance using the Thornthwaite Mather method on nine existing planting patterns and schedules, and to recommend strategies that can be implemented to prevent water deficit conditions. A descriptive method with a quantitative approach was used to analyze agroclimatic data to identify periods of water surplus and deficit. The results of the water balance analysis show that water surplus occurs from November to May, while deficit occurs from June to October. Conservation strategies, such as rainwater harvesting through microcatchment and macrocatchment systems, are proposed as effective approaches to address water deficit. These strategies can increase water availability, reduce the risk of crop failure, and optimize the use of available water resources. This study is expected to serve as a foundation for developing adaptive cropping patterns and enhancing the sustainability of the agricultural sector in the face of climate change. Keywords: Dry land, Rainwater harvesting, Thornthwaite-Mather, Water balance, Water management.
The Implementation of Micro/Nanobubbles (MNBs) Technology to Treat Basin Water as The Primary Water Source for Hydroponics in Greenhouse Asep Yusuf; Chay Asdak; Mimin Muhaemin; Sophia Dwiratna N.P; Anto Tri Sugiarto; Hilman Syaeful Alam
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.v13i1.197-204

Abstract

The greenhouse plays a pivotal role in creating an ideal environment for hydroponic cultivation. The greenhouse has utilized rainwater and basin water as a source of raw water for hydroponic farming. Presently, the water quality of Leuwi Padjadjaran basin fails to meet the standards required for hydroponics due to its turbidity, sediment content, discoloration, pH levels exceeding 7, and low dissolved oxygen (DO) concentration of 2.2 mg/l. The micro/nanobubbles (MNBs) technology stands as a viable method for water treatment owing to its capacity to bind impurities via radical OH. The application of MNBs for the treatment of basin water involves the use of a hydrodynamic cavitation MNBs generator with a dual-chamber rotating flow nozzle. The parameters evaluated in this research encompass DO concentration, MNBs stability, microbubble size, and the visual response to MNBs application. MNBs treatment was conducted with three different gases: air, oxygen, and ozone. Microbubbles were measured using the particle image velocimetry (PIV) method. The DO concentration reaches 21.6 mg/l when employing oxygen-based MNBs. On the third day post-generation, MNBs stability still maintains DO concentrations above the initial levels. Thus it can be used as hydroponic raw water.  Keywords:  DO concentration, Greenhouse, Micro/nanobubbles, Water treatment.
Co-Authors Abdurrahman, Muhammad Zhafir Ahmad Thoriq Amalia, Nabilla Fauzi Amiruddin A.Dajaan Imami Andiles Kusnadi Sentosa Anto Tri Sugiarto Anto Tri Sugiarto Asep Yusuf Asri Widyasanti Ayu, Yogina Lestari B Budiono Benny Joy Boy Macklin Pareira Prawiranegara Devi Maulida Rahmah Dinda Febrima Napitupulu Drupadi Ciptaningtyas Dwi Rustam Kendarto Edy Suryadi Efan Yudha Winata Eza Zahrotul Fuadah Fifi Dwi Pratiwi Fuadah, Eza Zahrotul Gunawan, Budhi Hendarmawan Hendarmawan, Hendarmawan Hilman Syaeful Alam Hilman Syaeful Alam Hilman Syaeful Alam Ida Nurlinda Iga Maliga Ihsan, Daffa Aufa Irfan Ardiansah Iwan Setiawan Kharistya Amaru Leon J. Bran Marjan Siti Maryam Mimin Muhaemin Moh. Dede Muhammad Achirul Nanda N.P, Sophia Dwiratna Nabila Aura Pithaloka Nadia Astriani Nugroho, Chrismaria Putri Nurpilihan Bafdal Nurrachman, Mochamad Anfasa Octoyne, Aisyah Pari kesit Parikesit Parikesit Pithaloka, Nabila Aura Primus Metafaty Daeli Raden Bramadi Nugraha Wargadibrata Ramdhon Bermanakusumah Santika, Silvy Saraswati, Gredia Sekar Selly Harnesa Putri Setiawan, Ditriz Silvy Santika SIska Rasiska, SIska Sophia Dwiratna Sophia Dwiratna Sophia Dwiratna N.P Sophia Dwiratna, Sophia Subiyanto Subiyanto Subiyanto Sudarjat Sudarjat Sugiarto, Anto Tri Sunardi Sunardi SURYADI, DEDE Wagiono - Wahyu Kristian Sugandi Widiyatno Widiyatno Wilda Naily Yogina Lestari Ayu Yogina Lestari Ayu Yogina Lestari Ayu Situmorang Yohanes Christian Yulizar Yulizar Yulizar