Jurnal Sains Teknologi dan Lingkungan (JSTL)
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Pembuatan Nanopartikel CaO dari Cangkang Telur Ayam Menggunakan Ekstrak Etanol Daun Salam (Syzygium polyanthum): Synthesis of CaO Nanoparticles from Chicken Eggshells Using Ethanol Extract of Bay Leaves (Syzygium polyanthum)
Full text linkChicken eggshell waste contributes to environmental because it have CaCO3 content. Calcium carbonate in chicken eggshells is used as a basic material in the synthesis of CaO nanoparticles through a calcination process at 900oC. CaO nanoparticles have unique characteristics that make them are needed for various fields of application such as environment, materials, and biomedicine. In addition, the synthesis of these nanoparticles can reduce the use of hazardous and environmentally friendly chemicals. This method has been widely used as an alternative method, one of which utilizes secondary metabolites found in ethanol extract of bay leaves as reducing and stabilizing agents. This research was conducted with 3 volume variations of bay leaf extract with calcined eggshell base materials, namely 3:7, 5:5, and 7:3 (v/v) to determine the effect on the resulting particle  size.  Characterization  of  CaO  nanoparticles  using  UV-Vis,  FTIR,  and SEM.  The nanoparticles obtained were in the form of white fine powder. The characterization results show the maximum absorption of CaO nanoparticles at λ 215 - 270 nm. Based on the FTIR spectra, Ca-O bonds can be identified in the three variations at 712 cm-1 dan 514 cm-1 and 874 cm-1 shows Ca-O-Ca bond. The resulting material has a flake shape and agglomeration morphology with an average particle size range of 43-498 nm
Parameter Genetik Beberapa Genotipe Mutan Padi (Oryza sativa L.) Galur G10 Generasi Kedua Hasil Iradiasi Sinar Gamma 300 Gray: The Genetics Parameter Of Some Rice Mutant Genotype (Oryza sativa L.) Galur G10 As A Second Generation Which Is From 300 Gray Gamma Radiation
Full text linkThis study aims to examine the genetic parameters of the G10 strain of second generation black rice from gamma ray irradiation dose 300 Gray which includes the value of broad sense heritability, genetic coefficient, phenotype coefficient, and correlation. The study was conducted from May to September 2021 in Nyurlembang Village, Narmada district, West Lombok regency, West Nusa Tenggara. The experiment was conducted using Group random design (rack) in the expansion (augmented design). Comparison varieties used in this study as many as 2 varieties, namely G10 and Situ Patenggang, repeated 3 times and planted as many as 20 plants, comparison plants were taken 6 samples in each replication, while the genotype of mutant plants was repeated once consisting of 24 genotypes, each genotype was planted as many as 10 plants. The experimental results of all characters showed the value of genetic diversity coefficient (KKG) and phenotypic diversity coefficient (KKF) in all characters have a low value criteria except the number of characters containing grain and the number of empty grain. The character of plant height, flowering Age, Total tillering, productive tillering, the number of contained grain, the number of empty grain, the weight of 100 grains, and the weight of grain per clump has a high heritability value in the broadest sense. The value of medium heritability is indicated by the long character of the panicle. Productive saplings have a real positive relationship to the weight of grain per clump
Mitigasi Longsor Dengan Penataan dan Peningkatan Kemampuan Kawasan Perbukitan Pada by Pass BIL-MANDALIKA Sebagai Infrastruktur Penunjang Kawasan Ekonomi Khusus (KEK) Mandalika Lombok : Landslide Mitigation by Structuring and Increasing the Capability of Hill Areas on By Pass BIL-MANDALIKA as Supporting Infrastructure for The KEK Mandalika, Lombo
Full text linkOne of the tourist destinations in Lombok, West Nusa Tenggara is the Special Economic Zone Mandalika (KEK Mandalika), a coastal tourism area with various supporting infrastructures on an international scale covering an area of 1,035.67 hectares. The pace of development brings environmental impacts, especially the morphology of the land in the form of mountains and hills is exposed by the conversion of land functions from proteced forest to agricultural areas without the application of land conservation methods. Bypass BIL-KEK Mandalika as the main connecting road for this tourism area is 17.2 km long flanked by hills with a slope of >30o and almost all hilly areas have been converted into agricultural areas. In this area there is minimal standing vegetation accompanied by unstable physical conditions, making all hilly areas on the BIL-KEK Madalika bypass classified as a Very High Erosion Hazard Level which reaches > 560 tons/ha/year which triggers more potential hazards. big like landslides and floods. Various steps have been taken, such as: 1) Integration of porang (Amorphopallus) and standing vegetation (canopy) applied in hilly areas in the Bypass BIL-KEK Mandalika area; 2) Emphasizing and preventing the conversion of buffer zones; 3) Rehabilitation of the Bypass BIL-KEK Mandalika Hills Area
Kesesuaian Kawasan Hutan Peo Waume Sebagai Ekowisata Mangrove Berkelanjutan Di Pulau Kapota, Kabupaten Wakatobi
Full text linkThe Peo Waume forest is a mangrove area located north of Kapota Island, Wakatobi Regency, Southeast Sulawesi. Visually, this area has the potential to be used by the community as an ecotourism object. Until now, this forest area has not been utilized optimally, although indirectly the ecological function of this forest supports various lives. Utilization of forest areas as ecotourism objects is estimated to be able to contribute to the socio-economic community, especially in Wakatobi Regency which is included in the National Tourism Strategic Area. This study aims to analyze the suitability of the Peo Waume Forest Area to be used as an eco-tourism area and to analyze its sustainability index by taking into account the ecological, socio-economic, and institutional dimensions. The results showed that the Peo Waume Forest Area was suitable to be used as a mangrove ecotourism object with an ecotourism suitability index of 2.15. The parameters used are mangrove thickness, mangrove density, mangrove type, tidal height, and diversity of biota objects. On the other hand, the sustainability index on the ecological dimension is 64.02, the socio-economic and culture dimension is 54.82and the institutional dimension is 50.94, indicating that the Peo Waume Forest sustainability index is insufficient. The lever factors that greatly influence the sustainability of the Peo Waume Forest Area are the attributes of community income, community waste management, and law enforcement
Keanekaragaman Jenis dan Kerapatan Vegetasi Hutan Pantai di Selatan Pulau Sumbawa, Kecamatan Labangka, Kabupaten Sumbawa: Species Diversity and Density of Coastal Forest in the South of Sumbawa Island, Labangka Subdistrict, Sumbawa District
Full text linkin Labangka Village in the South of Sumbawa Island is very important considering that this village is directly facing the Indian Ocean. In addition, the development of aquaculture in this village also requires knowledge of the vegetation that makes up the coastal forest so that appropriate management and monitoring activities can be planned. This study aims to identify the types of vegetation in coastal forest ecosystem in Labangka Village at four stations, namely in locations where super-intensive aquaculture will be built. The method used is the analysis of Importance Value Index and Normalized Differentiation Vegetation Index. The results of the study were as follows: Station 1 (27 species, dominated by Pongamia pinnata with an IVI of 185.64% for the tree level and IVI of 114.58% for the seedling level), Station 2 (9 species, dominated by P. pinnata INP of 214.16 % for the tree level and Leucaena leucocephala IVI 96.49% for the seedling level), Station 3 (18 species dominated by the pes-caprae formation type and shrubs, namely S. taccada, P. tectorius, and Heliotropium foertherianum), Station 4 (19 species dominated by shrubs namely S. taccada, Pandanus tectorius, and H. foertherianum and shrubs (L. camara and C. bonduc).The NDVI at observation stations ranged from -0.091 (sparse) to 0.543 (dense)
Analisis Nilai Keindahan Wisata Bahari di Pantai Tlangoh Bangkalan Menggunakan Metode Scenic Beauty Estimation (SBE): Analysis of the Beauty Value of Marine Tourism at Tlangoh Beach, Bangkalan Using the Scenic Beauty Estimation (SBE) Method
Full text linkThe potential for sightseeing in madura is one of the potential for enjoying its natural beauty. The tlangoh village beach Tours are in demand. The purpose of this study is to know the value of beauty on the tlangoh coast. The method of measuring beauty value with scenic beauty colonation (sbe), it is used to assess and analyze the quality of landscapes using the documentaries (location photos) with the presentation of the location (gili labak island). Studies show that 15 landscape photos compared to 4 positive ones and 11 negative ones. Shows there are 4 landscape locations on tlangoh beach better than comparison sites, and 11 landscaping better location Settings. The average score sbe -1.97, suggests that a control site is still better than the tlangoh coast. The lowest score is 82.34 on the 4th landscape photo and 2.11 on the 15th landscape photo. Locations with low value are mostly in natural conditions such as coral reefs, beaches, while the tlangoh beach tourist facilities fare better than comparison points. Improved environmental quality needs to be made to increase the value of beauty at tlangoh beach.Â
Potensi Cemaran Kandungan Minyak Lemak (Oil and Grease) Limbah Cair PT. Perikanan Sejahtera dan PT. Tuban Kretek Maju Di Kabupaten Tuban, Jawa Timur: Potential Contamination of Fatty Oil Content (Oil and Grease) Liquid Waste PT. Perikanan Sejahtera and PT. Tuban Kretek Maju In Tuban Regency, East Java
Full text linkWastewater from the result of industrial activities such as PT. Perikanan Sejahtera dan PT. Tuban Kretek Maju, with the characteristics of the numbr pf supporting and main parameters that still meet the waste water quality standards. Waste water is processed and treated fisrt before being discharged directly into receiving water bodies so that ut does not have an adverse impact on the aquatic environment. Sampling test samples of wastewater were taken directly from the IPAL outlets of each PT. This study aims to determine the potential for water pollution drom oil and grease content at two PT. different. The research method is observation and active participation method. Determination of potential quality of domestic wastewater in accordance with the Regulation of the Minister of Enviromental of the Republic of Indonesia No. 5 of 2014. The pH value is determined based on (SNI 6989.11:2019), the temperature value is determined based on (06-6989.23:2005) and the fatty oil value is determined by the gravimetry method according to (SNI 6989.10:2011). The results the research on the pH value of the samples of PT. Perikanan Sejahtera dan PT. Tuban Kretek Maju is 7,80 and 7,67, the temperature value is 31,0 and 32,6. Meanwhile, the values for oil and fat content were 1.850 mg/L and 1.800 mg/LOil and fat figures are not too significant, showing too much difference in the test samples. Waste water from each PT. does not have a large potential to cause pollution of the water environment in the parameters of oil and grease
Estimasi Kapasitas Daya Tampung Landfill dan Umur Pakai TPA Gili Trawangan: Estimasi Kapasitas Daya Tampung Landfill dan Umur Pakai TPA Gili Trawangan
No full textThis research aims to calculate the estimated landfill capacity and the remaining operational life of the landfill on Gili Trawangan. The condition of the pile of rubbish in the landfill area, which is becoming increasingly mountainous day by day without any compaction and stockpiling process, has resulted in the operational lifespan being reduced over time. Limited land on small islands such as Gili Trawangan is a significant obstacle that must be considered with more intensive waste reduction efforts and integrated waste management. By knowing the remaining operational life based on the projected waste volume for the next 20 years and also the height of the waste pile at the Gili Trawangan TPA, it is hoped that it will be an early warning, especially for the Regional Government, the local community of Gili Trawangan and stakeholders related to waste management to take quick steps in managing the waste pile. The method used in this research is a descriptive, evaluative method starting with a geometric equation approach to calculate projections of waste generation, the carrying capacity of the landfill on Gili Trawangan and estimates of the remaining operational life. The results of this research are that the remaining operational life of the landfill is 3 years. It represents an alarming condition because it will contribute to the increasing vulnerability of small islands, especially Gili Trawangan, especially the decline in environmental conditions
Ragam Bahan Untuk Pembuatan Pakan Khusus Yang Diberikan Kepada Pasangan Kerbau Sumbawa Karapan Sebelum Bertanding (Studi Di Kecamatan Empang Kabupaten Sumbawa): Variety Of Ingredients For Manufacturing Special Feeds Given To Couples Sumbawa Buffalo Racing Before The Competition (Study In Empang District, Sumbawa Regency)
Full text linkA survey was conducted in Empang sub-district, which has many Sumbawa buffalo racing enthusiasts. Before the animals are competed, are they given special feed/herbs? What are their chances of winning? This is what the research will seek to answer, as there is no written information on this subject. The survey found that all farmers give special feed/herbs to their raced sumbawa buffaloes, but the ingredients/recipes differ, ranging from the most complete recipe consisting of 17 ingredients, the medium recipe consisting of 12 ingredients, and the minimalist recipe consisting of 9 ingredients. All of them have won. The complete recipe won first place (43 pairs of buffalo), the medium recipe won second place (48 pairs of buffalo), and the minimalist recipe (29 pairs of buffalo) won third place.
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Evaluasi Kinerja Metode Perhitungan Koefisien Pengaliran: Evaluation of Runoff Coefficient’s Calculation Methods Performance
Full text linkThe runoff coefficient dramatically affects the volume of surface runoff. The better the method for determining the runoff coefficient, the more precise the estimation of the amount of surface runoff will be so that it can support planning for the management of water resources in an area more effectively. Several runoff coefficient calculation techniques, such as the U.S. Forest Service method, Hassing and Cook use different approaches to produce runoff coefficients. This study examines the accuracy of those methods in producing runoff coefficients by comparing the coefficients obtained from the methods with the actual flow coefficients obtained from measurement data. The results showed that the closest runoff coefficient to the coefficient of measurement one is by the U.S. Forest Service method using the median of the value intervals provided in the USFS table. The second and third best methods are the Hassing and U.S. Forest Service for maximum value