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Jurnal Sains Teknologi dan Lingkungan (JSTL)
Published by Universitas Mataram
ISSN : 24770329     EISSN : 24770310     DOI : -
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Computer Science & IT Public Health
Jurnal Sains Teknologi dan Lingkungan (JSTL), merupakan media untuk publikasi tulisan asli yang berkaitan dengan sains teknologi dan lingkungan baik dalam Bahasa Indonesia maupun Bahasa Inggris. Jurnal Sains Teknologi dan Lingkungan (JSTL) merupakan jurnal ilmiah terbitan berkala dua kali setahun (Juni dan Desember).
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Articles 335 Documents
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Komposisi Nutrisi Maggot Yang Dibudidaya pada Media Berbasis Limbah Telur Infertil dan Ampas Tahu Rosyadi, Muhammad Amri; Purnamasari, Dwi Kusuma; Erwan, Erwan; Sumiati, Sumiati; Wiryawan, K.G.; Syamsuhaidi, Syamsuhaidi; Maslami, Vebera
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 1 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i1.572

Abstract

This research aims to reveal information about the nutritional content of maggots cultivated using hatching egg waste as a feed medium. Carried out in two stages, the first stage involves rearing maggots using hatching egg waste and tofu dregs, while the second stage focuses on analyzing the nutritional content of maggots. The research involved five treatments and four replications, with controls P0 (100% tofu dregs), P1 (75% tofu dregs + 25% egg hatching waste), P2 (50% tofu dregs + 50% egg hatching waste), P3 (tofu dregs 25% + 75% egg hatching waste, and P4 (100% egg hatching waste). Each replication used one gram of BSF fly eggs, with tofu dregs and egg hatching waste being fed as much as 20 kg/biopond during rearing. The variables observed involved dry matter, ash content, crude fat, crude fiber, and crude protein. The results showed that P4 treatment produced maggots with the highest nutritional content, especially in terms of crude protein. In conclusion, the best food media was found in treatment P4, providing the potential to improve the nutritional quality of maggots as an alternative food source.
Pengaruh Diameter Pipa Primer Pada Irigasi Tetes Bertingkat Negara, I Dewa Gede Jaya; Hartana, Hartana; Supriyadi, Anid; Saadi, Yusron; Yasa, I Wayan; Julio, Ryan Bagus
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 1 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i1.573

Abstract

Multilevel drip irrigation is an irrigation method that supports water-saving agricultural activities in limited areas by channeling water through perforated pipes from emitters. An ideal multilevel drip irrigation system can provide the same volume of droplets to plants, so that the distribution of irrigation water and the uniformity of drip irrigation are important factors that need to be considered when using drip irrigation to provide plant irrigation. This research aims to determine the effect of using variations in the diameter of PVC pipes as primary pipes on the distribution of drip irrigation and its uniformity. The primary irrigation network tested for each network to the 1st floor to the 3rd floor consists of ½", ¾" diameter and 1" pipe, while the secondary and lateral drip pipe networks use ½" PVC. The test was carried out on an area of 4 m x 1 m x 1.8 m with a distance between levels of around 0.9 m, with an irrigation water source from a 200 liter tank placed on a tower with a height of 2.5 m.The results of the research show that the discharge produced by the main pipe is different on each floor of the irrigation network, on the 1st floor the discharge is 127.13 cm3/second and on the 3rd floor the discharge is 120.91 cm3/second, while on the 2nd floor the discharge is between the values of the 1st floor discharge. and 3rd floor. Regarding the results of the distribution of drip irrigation water volume, it is known that the average does not show significant differences due to differences in network operations or due to differences in pipe diameters used, where the values for floors 1 to 3 are respectively 68.75 ml, 68 .47ml, 68.19ml. The uniformity of drip irrigation shows results above 94% on all network floors and is considered very good.
Efektivitas Kunyit (Curcuma longa L.) sebagai Suplemen Pakan Ikan Rahmadani, Thoy Batun Citra; Diniariwisan, Damai
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 1 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i1.580

Abstract

Feed supplements for aquaculture activities are materials that currently widely used. There are many feed supplements using herbal ingredients, because it is considered more safety for fish. It is based on prohibition of antibiotics usage, because it can create resistance in microorganisms and has a negative impact on environment. Turmeric is a spice that widely used as a feed supplement. Most turmeric is used for cooking ingredient, but it is also widely used in traditional medicine. Several active compounds in turmeric such as curcumin and turmerone have been studied. These active compound have been proven could increase antioxidant and prevent lipid peroxidation, so it can increase the fish growth. Apart from that, this active compound is also useful in inhibiting bacterial growth by damaging membrane and preventing the formation of biofilms.
Hasil Dan Nisbah Kesetaraan Lahan Dua Varietas Cabai Merah (Capsicum annum L.) Yang Ditumpangsarikan Dengan Kacang Tanah Di Lahan Kering Safta, Laila; Jaya, I Komang Damar; Santoso, Bambang Budi; Jayaputra, Jayaputra
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 1 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i1.587

Abstract

Drylands with limited resource support need to increase their productivity. One indicator of land productivity is the land equivalence ratio (LER). This research aimed to study the growth and yield of red chili due to the effect of varieties and peanut planting times in intercropping systems to increase dryland productivity. One experiment was conducted in Amor-amor Hamlet, Gumantar Village, Kayangan Sub-district, North Lombok Regency, from March to August 2023. The red chili varieties tested were Baja MC (hybrid) and Landung (non-hybrid). Meanwhile, peanut (Hypoma 2 variety) planting time was at the same time, one week after planting (WAP) of chili and 3 WAP. The treatments were arranged factorially using a Randomized Block Design with three replications. All component crops had monoculture treatments to calculate LER. The results showed no interaction between variety and planting time on all parameters observed. Variety had no significant effect on growth and LER but significantly affected the yield of chili. The Landung variety produced higher yields than the Baja MC variety. Planting time treatment had no significant effect on growth and LER but significantly affected the yield of chili. The planting time of peanut that produced the highest yield was 3 WAP. The intercropping of chili with peanuts at all planting times increased dryland productivity with LER values greater than 1.0
Model Matematik Prediksi Pembentukan Biogas dari Limbah Kotoran Ternak Putra, Guyup Mahardhian Dwi; Setiawati, Diah Ajeng
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 1 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i1.591

Abstract

Petroleum is currently the most commonly used fuel in Indonesia, but its availability is decreasing! Therefore, alternative energy sources are needed.  One solution is to convert agricultural and livestock waste into biogas, which is a renewable and environmentally friendly energy source! Biogas can be used for cooking, generating electricity, and even as fuel for vehicles! The aim of this research is to develop a mathematical model for predicting biogas volume! Can you believe it? The experiment involved creating biogas from a mixture of cow dung and water in a 1:2 ratio. The mixture was stirred until evenly distributed in a portable biogas floating drum. No gas was formed from the first day until the seventh day, but on the eighth day, gas began to form and its volume was recorded! A mathematical model approach, namely the Gompertz and Logistic Models, was used to predict the formation of biogas volume! And guess what? The results indicate that both models were able to predict the data accurately with a coefficient of determination (R2) of 0.99!  The validity test results show that the Gompertz model is the most reliable for making predictions! This is indicated by the bias value of 0.002, MSEP value of 0.000, and EI of 0.058. The validity test value is smaller than the validity test value obtained in the Logistic model, which is a bias value of 0.016, MSEP value of 0.005, and Ei value of 0.329.
Pengukuran Konsentrasi Coarse Particle di Ruangan dengan Sistem Kontrol Temperatur Udara Budianto, Arif; Juniarti, Rosita; Wirawan, Rahadi; Rahayu, Susi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 2 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i2.595

Abstract

Particulate matter is an air emission that is compossed of particle and liqud dropplet. This suspension is easily measured in several size distributions: ultrafine particle, fine particle, coarse particle, and total suspended particle. Coarse particle is commonly used as a parameter of air quality index. This research aims to measure coarse particle concentrations inside an air-conditioned room. The measurement was conducted using a particulate sensor and a microcontroller for an hour. All measurements were varied into: active and non active room conditions. The results show that human activities and movements in the first variation has higher concentration than the second one. The difference is about 12 µg/m3. human activities have a significant role in the submicron particulate distribution inside a room. Air-conditioned room has higher concentration than a common room.
Upaya Pengurangan Limbah Kemasan Plastik Air Minum Melalui Kajian Kualitas Keran Air Siap Minum (KASM) di Wilayah Kota Bogor Iryani, Ani; Syahputri, Yulian; Ramadhini, Dania; Purnama, Dicky Budhi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 2 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i2.597

Abstract

Sales of bottled drinking water (AMDK) increase in line with population growth every year. Based on data from the Indonesian Plastic Industry Association (Inaplas) and BPS, Indonesia produces 64 million tons of waste/year, and 3.2 million tons of plastic waste comes from AMDK. In connection with the community's dependence on consuming AMDK, the government through the Regional Public Company (PERUMDA) Tirta Pakuan created a superior program, namely Tap Water Ready to Drink (KASM). The problem is that many residents do not take advantage of KASM's services. The aim of this research is to compare the quality of AMDK and KASM so that the public can obtain information and increase confidence in the quality, safety and cleanliness of drinking water originating from KASM. This research method includes sampling followed by analysis of physical parameters (color, odor, taste, temperature), chemical (turbidity, TDS, metals, pH, Cl-, F-, NO2-, NO3-, NH3, hardness, CN -, SO42-) and Total microbiology (Coliform, E.coli) based on quality standards PERMENKES 492/2010. KASM samples were taken at 6 points using the SNI 8995:2021 method. The AMDK sample was obtained by purchasing 5 brands of AMDK randomly. Physical, chemical and microbiological parameters were analyzed using the APHA, SNI, US-EPA methods using ICP-OES, UV-Vis spectrophotometer and nephelometer. The results show that all KASM and AMDK samples have met the quality standards of PERMENKES 492/2010. Based on the comparison of analysis results, all AMDK samples had lower quality compared to KASM samples even though other microbiological, chemical and physical parameters were not significantly different.
Pemanfaatan Eceng Gondok dan Crude Palm Oil sebagai Bioaditif Bahan Bakar Kendaraan Bermotor Wulanawati, Armi; Hairunnisa, Hairunnisa; Sinaga, Friska Wati; Islami, Yosianda Andusia
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 2 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i2.598

Abstract

Eceng gondok contains chlorophyll which is an oxygenate type additive which can increase the combustion reaction in fuel and reduce exhaust emissions. Therefore, eceng gondok has the potential to be used as a bioadditive in fuel by adding carotene from crude palm oil which functions as an antioxidant through electron transfer, thereby protecting chlorophyll from autooxidation. The two chlorophyll and carotene extracts at a ratio of 0:1, 2:3, 3:1, 4:1, 3:2, and 1:0 respectively were mixed with toluene and Fatty Acid Methyl Ester as a bioadditive formula. in gasoline fuel. The research results show that there is an increase in octane value of 0.1-0.5% according to ASTM D 2699 and GC-FID and results in a reduction in CO and CO2 exhaust emissions of 52.38% and 37% respectively. .00% on the use of chlorophyll : carotene (2:3) bioadditives in gasoline. This shows that eceng gondok and crude palm oil can be used as bioadditives in gasoline motor vehicles.
Produksi Briket dari Limbah Plastik dan Ampas Tebu dengan Metode Pirolisis Pasaribu, Monita; Sena, Muhammad Arya; Kristiani , Maria; Jaman, Winda Sri; Enggita, Asadian Puja; Supardi, Supardi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 2 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i2.599

Abstract

Plastic is a polymer product that is widely used in society. This resultx in an increase in plastic waste. Plastic waste processing needs to be done to prevent environmental emissions. Plasstic waste can be converted into an alternative energy source in briquettes. The reasearch object is to produce briquettes from plastic and sugarcane bagasse. Plastic briquettes and bagasse have a ratio of 1:2, 1:1 and 2:1. The second stage is the preparation and design of the tool using the pyrolisis method. Research variables include the composition of plastic waste and sugarcane bagasse. Analysis of briquette products includes calorific value, ash conten and water conten. The results of research on briquette products with variations in sampel A having a ratio of 1:2, sample B with ratio of 1:1 and sample C with a ratio 2:1 respectively show a calorific value of 3,929 cal/g, 4.013 cal/g, 4,222 cal/g; water content values of 8,6%, 6,7%, 5,8%, the ash content value is 5,4%, 7,2% and 8,6% and the volatile matter value is 15.3, 13.2% and 12,6%.
Pengaruh Variasi Diameter Pipa Primer Terhadap Pola Resapan Air Irigasi tetes Bertingkat Pada Media Tanam Polybag Negara, I Dewa Gede Jaya; Hartana, Hartana; Supriyadi, Anid; Suroso, Agus; Julio, Ryan Bagus
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 2 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i2.603

Abstract

Multilevel drip irrigation is an irrigation method that supports water-saving agricultural activities in limited areas by channeling water through perforated pipes from emitters. The ideal multistage drip irrigation system can provide the same drip volume to plants, so the distribution of irrigation water and its depth need to be important factors to pay attention to in order to provide optimal plant irrigation. This research aims to determine the effect of using variations in primary channel pipe diameter on the distribution of drip irrigation and the depth of infiltration of irrigation products in a 3 (three) tier drip irrigation network. Tests were carried out on primary pipes from floors 1 to 3 with a diameter of ½", ¾" and pipes 1", with lateral drip pipes with ½" PVC. The size of the test field is 4 m x 1 m x 1.8 m and the distance between levels is around 0.9 m and the irrigation water source from a 200 liter tank is 2.5 m high. The research results showed that irrigation distribution results were quite good at all levels of the irrigation network, namely 70 ml and 68 ml. Irrigation patterns do not have a significant effect on the results of irrigation distribution due to variations in primary pipe diameter. A soil composition of 30% compost has achieved irrigation infiltration with a depth of 21 cm, including the fastest, namely 25 minutes and for 70% soil, an irrigation infiltration time of 35 minutes is required.

Page 23 of 34 | Total Record : 335

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