Journal of Low Carbon Technology and Society

Wastewater Treatment in PT. Solusi Bangun Andalas

Khairun Nisah, Win Win Titian Anggasani, Listiawati — 2024-06-06

One way to improve the quality of wastewater and preserve the living environment is to use WWTP. WWTP is the final wastewater disposal and treatment facility. Pre-treatment, primary treatment, secondary treatment, and tertiary treatment are several stages of the wastewater treatment process. Wastewater treatment can reduce the levels of organic substances, nutrients, and harmful substances in wastewater, as demonstrated by liquid waste characterization values such as pH, TDS, TSS, BOD, and COD. As a result, WWTP can be used in a variety of industries. Wastewater management meets environmental standards set by government regulations. Wastewater treatment with WWTP can improve the quality of wastewater before discharging it into the environment and reduce waste pollution.

Indonesian Geothermal Energy: History, Development and the Opportunity to Contribute on GHG Emission Reduction

Suardi Nur — 2024-06-06

This paper has provided an overview of Indonesia's geothermal energy development, emphasizing its potential as a long-term solution for clean and sustainable energy amidst increasing electricity demand and concerns about global warming. While geothermal energy alone may not fully address global warming, it can significantly contribute to a cleaner energy future, especially when integrated with other renewable sources and efforts to improve energy efficiency. Despite Indonesia's considerable geothermal resources, only approximately 8% had been tapped as of 2022. Past political and economic challenges are believed to have hindered the country's geothermal development progress.These utilization figures fall short of Indonesia's ambitious emissions reduction targets outlined in its Nationally Determined Contributions (NDC) under the Paris Agreement. Regardless to that, the government has revised its targets, aiming for a higher emission reductions of 31.89% (unconditional) and 43.2% (conditional) by 2030, compared to the previous targets of 29% and 41%, respectively. To optimize its geothermal resources, Indonesia must establish clear and supportive policies and regulations to incentivize development. Additionally, fostering stronger collaboration between the government, private sector, and international partners is essential for maximizing geothermal energy's contribution to Indonesia's sustainable energy goals.

Carbon Footprint Analysis of Residental Activities in the Kuta Alam Banda Aceh

Stursina Binti Safwan, Mulyadi Abdul Wahid, M. Faisi Ikhwali — 2024-06-06

Global warming is a phenomenon caused by the greenhouse effect. Increasing global temperature will lead to climate change, which human activities influence. Settlement as an area with various activities is one of the sources of greenhouse gases. Banda Aceh City, the capital of Aceh Province, has a population of 268,148 people. The large number of residents who engage in various activities in their daily lives will undoubtedly affect the carbon emissions produced. A study was conducted to calculate the carbon footprint generated in the Kuta Alam Sub-district Banda Aceh as the study area. Kuta Alam sub-district has a population of 53,679 from 11 villages. This study calculated carbon footprints in the cooking fuel, electricity, and transportation sectors. The results show that the CO₂ emission in the cooking fuel sector is Beurawe village, which produces emissions of 59.358 TonCO₂ / month; in the electricity sector is Bandar Baru village, which produces emissions of 628.753 TonCO₂ / month, in the transportation sector is Bandar Baru village which produces emissions of 444.795 TonCO₂ / month. The largest total emitter is Bandar Baru village, 1073.548 TonCO₂ / month, while the lowest emitter is Kota Baru village, which produces emissions of 307.825 TonCO₂ / month.

Identification of Microplastics in Sediment and Shoots (Polymesoda erosa) in the Flows of Lampulo Banda Aceh

Nur Rizka Jamalia, Mulyadi Abdul Wahid, Husnawati Yahya — 2024-06-06

The spread of microplastics in waters and sediments can be harmful to marine biota. These microplastics can enter the food chain and eventually reach humans so that they can pose a dangerous risk to humans. This study aimed to determine microplastic abundance, polymer, and characteristics based on shape, color, and size in sediments and crab shells in the waters of Lampulo Banda Aceh. This study began with sampling, sample preparation, and microscopic analysis. Identification using a binocular microscope with a magnification of 4×0.10 and identification of polymer types using FTIR. Some types of microplastics found were fragments, fibers, and films. The abundance of microplastics in sediment samples amounted to 1910 particles/kg, while in crab shell samples amounted to 2500 particles/kg. The results of microplastic analysis using FTIR on crab shell samples showed the presence of microplastic polymers such as Polypropylene (PP), Polystyrene (PS), Polyamide (PA), High-density polyethylene (HDPE), and Low-density polyethylene (LDPE). The sources of microplastics come from household waste and the activities of residents, so this is a factor in the presence of microplastics in the waters and causes problems for biota living in Lampulo waters.

Utilization of Carbide Waste Using Goat Manure Activator for Mine Soil Remediation

Husnawati Yahya, Yeggi Darnas, Muhammad Chatami — 2024-06-06

Effectiveness Test of Coconut Finding Waste (Cocos Nucifera.) as A Briquettes Building Material Using Latex Performance

Abdan Sakura Pasaribu, Husnawati Yahya, Hadi Kurniawan — 2024-06-06

Biocharcoal briquettes are one of the fuels derived from biomass. The biomass used in this research is coconut shell with latex adhesive. This study aims to test the effectiveness of coconut shell waste using latex adhesive with a ratio of 90:10, 80:20, 70:30, 60:40, and 50:50 to meet the standard of calorific value, ash content, moisture content, and density in briquettes by SNI No. 01-6235-2000. The results of this study showed that the calorific value, ash content, moisture content, and density of briquettes with a briquette and adhesive ratio of 90:10 respectively ranged from (1949.4), (5.39), (12.86), (0.325). The analysis shows that briquettes with a composition of coconut shell waste to latex 90:10 is a composition of briquette ratio that produces the highest calorific value, low moisture content, low ash content and good density value so this composition has better quality than other compositions.

Performance Analysis of Light Arrester (LA) Protecting Power Transformer at Distribution Substation MH284 Buha Manado

2024-06-06

North Sulawesi (Manado) is located in the equatorial region with a tropical climate and high humidity, causing the density of lightning strikes in this area to be quite large yearly. Lightning strikes can cause overvoltage, which can endanger the insulator on the line as well as other electrical equipment if allowed to flow into the system and channel to the load. Therefore, a protection system is needed to handle these disturbances. One of them is by installing a Light Arrester (LA). Light Arrester is safety equipment from overvoltage disturbances by surges lightning or surges switching . The arrester works at a specific voltage above the operating voltage to dispose of the electric charge from surges lightning or surges switching. Under normal conditions, the light arrester acts as insulation. However, if there is any available surges lightning or surges switching , the arrester acts as a conductor that functions to pass high currents to the ground. The failure rate of arrester protection is highly dependent on the Basic Insulation Level (TID) of the equipment, the working voltage of the lightning arrester, and the location of the light arrester placement itself.