Jurnal Ecocentrism

EKSPLORASI AIR TANAH MENGGUNAKAN METODE KONFIGURASI AUDIO MAGNETOTELURIK (ADMT) PADA DESA BUAHAN KINTAMANI

I Kadek Adiana Putra — 2024-08-28

The demand for clean water in Binyan, Buahan Village, Kintamani District, is high due to its use in drinking, sanitation, agriculture, and livestock. Identifying aquifers at specific depths can be achieved using the resistivity geoelectric method. Considering the morphology of the survey object which is one of the triangle faces of the traces of Mount Batur Purba with wavy to steep contours, Geoelectric measurements using AGR/ADMT Type 300 HT2 were chosen. This method allows its use without the need to lay cables. This tool has the capability to reach a depth of up to 300 meters below the ground surface. The purpose of this research is to interpret data using 2-dimensional modeling to detect groundwater aquifers in the study area. Based on the rock resistivity contour interpretation along a 50 m track from west to east, the optimal drilling point is recommended at a depth of 285 m below the surface, with a total well depth of over 300 m. Filters should be installed at depths of 165 m, 195 m, and 285 m to account for the lithology, distribution, thickness, and depth of the rock layers.

PEMANFAATAN FLY ASH SEBAGAI PENGGANTI SEBAGIAN SEMEN PORTLAND UNTUK MENGURANGI EMISI KARBON

Ketut Agus Karmadi — 2024-08-28

Understanding concrete is the most building material in construction industry. Advantages concrete of compared to other materials are that it requires little maintenance fire and water resistant. This study aims to 1) Determine the utilization fly ash from Asphalt Mixing Plan (AMP) in PT. Harapan Jaya Beton for concrete mix; 2) Determine the efficiency percentage of optimal fly ash use in concrete mix. The composition of fly ash used is Portland cement 5%; 10%; 15%; 20%; 30% made from mixture fly ash and Portland I type cement. The results of reaserch showed that burning of AMP as cement component instead of concrete mix. The workability of fly ash at 28 days is 15% with compressive strength of 28.7 MPa and 15% with modulus of elasticity of 14790 MPa. At 56 days the best use is 15% of tensile strength with value of 30.1 MPa and 15% elastic modulus with value of 15325.9 MPa, and at 90 days the best use is 10% compression strength with value of 31.9 MPa and 15% modulus of elasticity with value of 18213.5 MPa. From the above results, it shows that Portland cement can be used by using to reduce carbon emission by 20-30%.

EFEKTIVITAS PENGOLAHAN SAMPAH DI PUSAT DAUR ULANG MENGWITANI

I Made Nada — 2024-08-28

One of the issues arising from the increasing population every year, along with the increase in activities and consumption of residents in Mengwi District, is the increase in waste generation. The purpose of this study is to determine the effectiveness of waste management at the Mengwitani Recycling Center (PDU). This research uses a quantitative method, where the effectiveness measurement is conducted through the inventory of waste processing units at the Mengwitani Recycling Center (PDU). The inventory data is used to compile the mass balance of the waste entering and exiting each processing unit for data analysis in determining the effectiveness of waste management at the Mengwitani Recycling Center (PDU). The effectiveness of waste management at the Mengwitani Recycling Center (PDU) was determined by the total waste intake over a year from June 2023 to June 2024, which reached 236,911.18 kg. Of this, the total wet organic waste amounted to 219.53 kg, and inorganic waste to 2,086.11 kg. The total residue reached 233,999.62 kg, with 233,999.62 kg of waste being incinerated. The incinerated waste produced 73,905.33 kg of ash, resulting in an average total waste reduction percentage at the Mengwitani PDU over one year of 70.14%.

ANALISIS LAJU TIMBULAN, KOMPOSISI, DAN KARAKTERISTIK SAMPAH RUMAH TANGGA DI DESA ANGANTAKA

I Made Sastra Wibawa — 2024-08-28

Angantaka Village, covers an area of approximately 239 hectares with a population of around 4,376 people and 1,458 households. According to SNI 19-3983-1995, Angantaka Village is classified as a small town with a population of less than 100,000. Waste management system in the village largely follows the traditional method of collect, transport, and dispose without any sorting. The main issues contributing to the waste problem in Angantaka Village include a lack of community awareness regarding proper waste management and the absence of adequate temporary waste disposal facilities. Most of the waste from Badung Regency, including Angantaka Village, is transported to the Suwung landfill. Therefore, composition, and characteristics of household waste, which would help in estimating the land requirements and the costs for constructing and operating a 3R (Reduce, Reuse, Recycle) waste processing facility. The study revealed that the average domestic waste generation is 0.6 kg per person per day, with wet waste, including food scraps and garden waste, amounting to 1,519.78 kg per day, and dry waste, such as plastics, paper, and metals, totaling 1,360.55 kg per day. This data is crucial for designing a 3R-based Temporary Waste Management Facility in Angantaka Village.

UJI KUALITAS AIR PADA SUMBER MATA AIR SUNGAI AYUNG MENGGUNAKAN METODE INDEKS PENCEMARAN

I Made Nada — 2024-08-28

The Ayung River spring water source is used by the community for religious activities such as melukat and for bathing water, of course it is necessary to pay attention to the quality of the spring water source. The water quality at the Ayung River spring water source can be determined by testing the water quality using physical, chemical and biological parameters. The test results are adjusted to the water quality standards table based on Bali Governor Regulation Number 16 of 2016 to determine the quality of water that has been tested. Then the test result were analyzed using the Pollution Index (IP) method to determine the level of water pollution at the Ayung River spring water source. Based on the result of the analysis, it was found that at point 1 Beji Karang Dalem got an IP score of 1.36 with a lightlu polluted status and at point 2 Pesiraman Dukuh Sakti got an IP score of 1.75 with a lightly polluted status.