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Al-Ard: Jurnal Teknik Lingkungan
Published by Universitas Islam Negeri Sunan Ampel
ISSN : 24608815     EISSN : 25491652     DOI : http://jurnalsaintek.uinsa.ac.id/index.php/alard/o
Core Subject : Social,
Environmental Science
Al Ard Jurnal Teknik Lingkungan publish articles on environmental engineering from various perspectives, covering both literary and fieldwork studies.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol. 11 No. 1 (2025): September" : 6 Documents clear
Polusi Udara di Kawasan Industri Nikel di Morowali: Dampak, Resiko, dan Solusi Mitigasi Naprida, Alifah Risa; Fikri, Alip Musaqo; Ash Shiddiq, Abdul Malik; Sari, Alya Sirena; Praseliya, Mila; Ulya, M. Ridho
Al-Ard: Jurnal Teknik Lingkungan Vol. 11 No. 1 (2025): September
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/alard.v11i1.2220

Abstract

The nickel industry in Morowali, Central Sulawesi, makes a significant contribution to the regional economy but also causes considerable air pollution problems. Mining, processing, and smelting activities release hazardous emissions such as PM10, PM2.5, sulfur dioxide (SO₂), and dust particles that threaten air quality and public health. The findings show that nickel pollutant concentrations in the IMIP area range from 0.05–0.15 μg/Nm³, exceeding the standard limit of 0.03 μg/Nm³. In addition, SO₂ concentrations reached 288.497 μg/m³, far above the standard of 150 μg/m³. Health impacts are reflected in the surge of Acute Respiratory Infection (ARI) cases at Bahodopi Health Center, increasing from around 10,000 cases in 2020 to 55,527 cases by January 2023. Although mitigation efforts through government regulations and the implementation of environmentally friendly technologies have been carried out, pollution levels remain high. This study recommends the application of Baghouse Filter technology as a primary solution to reduce particulate emissions by up to 99.9%. Collaboration between industry, government, and communities is essential to achieve sustainable solutions.
Optimalisasi Penurunan Kehilangan Air Di Zona Pelayanan Perusahaan Umum Daerah Air Minum Barikiyah, Saeril; Masduqi, Ali
Al-Ard: Jurnal Teknik Lingkungan Vol. 11 No. 1 (2025): September
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/alard.v11i1.2321

Abstract

According to Regulation of the Ministry of Public Works and Housing of the Republic of Indonesia No. 27/PRT/M/2016, the maximum allowable level of non-revenue water (NRW) in a drinking water supply system (DWSS) is 20%. However, the NRW level of a regional water utility (Perumdam) in East Java has reached 26.47%, consisting of a total distributed water volume of 5,922,337 m³ and a billed water volume of 4,354,472.00 m³. One of the causes of this NRW is the distribution pipeline network system, which remains interconnected between different networks. This study aims to analyze the optimization of NRW reduction, particularly in one service zone. The research method used is an analysis of the existing conditions and NRW control using Epanet software. Based on the research findings, it was identified that all customers in the service zone met the minimum pressure requirement of 5–10 m. Water loss control was carried out through the establishment of a District Metered Area (DMA), optimization of the pipeline network, active leakage control, and pressure management. The results showed a reduction in physical water loss by 0.86%, with a saved water volume of 20,571 m³ per month.
PM di Pekanbaru Tahun 2024: Sumber dan Transportasi Atmosfer Menggunakan Trajektori Mundur HYSPLIT Mustaqiman, Aulia Nur; Shirajjudin , Angga Dheta
Al-Ard: Jurnal Teknik Lingkungan Vol. 11 No. 1 (2025): September
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/alard.v11i1.2333

Abstract

This study investigates the concentration and dispersion patterns of PM in Pekanbaru, Indonesia, from January to November 2024, using a combination of air quality data and HYSPLIT trajectory modeling. The analysis identifies the peak PM concentration on September 22–23, 2024, reaching 55.74 µg/m³, which corresponds to an Air Quality Index (AQI) value of 131—classified as "Unhealthy for Sensitive Groups." Monthly PM levels fluctuated significantly due to meteorological influences such as rainfall, wind speed, humidity, and temperature inversions. The dry season (June to October), characterized by low precipitation and stagnant wind conditions, showed the highest PM values, while the wet months demonstrated a cleansing effect through wet deposition. HYSPLIT backward trajectory modeling revealed that pollutants reaching Pekanbaru originated from the northwest, possibly linked to biomass burning and forest fires in adjacent provinces such as West Sumatra. Dispersion maps showed pollutant accumulation hotspots in densely populated areas like Jalan Bandeng and Tangkerang Tengah, where traffic and household emissions contributed heavily. Moreover, meteorological factors must be continuously monitored to predict and manage pollution events effectively, especially in urban tropical environments like Pekanbaru.
PENGARUH AKTIVASI KIMIA PERMUKAAN PASIR SILIKA TERHADAP EFISIENSI ADSORPSI TIMBAL(II) Sani, Muhammad Irfansyah Naufal; Trihadiningrum, Yulinah; Wilujeng, Susi Agustina
Al-Ard: Jurnal Teknik Lingkungan Vol. 11 No. 1 (2025): September
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/alard.v11i1.2350

Abstract

The electroplating industry has grown by 12.56% annually, increasing the risk of environmental pollution due to wastewater containing heavy metals, particularly lead (Pb), with concentrations reaching 3.56 mg/L—exceeding regulatory limits. This study aims to evaluate the efficiency of chemically activated silica sand in removing Pb(II) from synthetic solutions, determine the optimum adsorption conditions, and model the adsorption isotherm. The activation was carried out using a mixture of 98% H₂SO₄ and 30% H₂O₂, followed by neutralization and drying at 105 °C. FTIR characterization indicated enhanced hydroxyl and silanol groups, which serve as active adsorption sites. SSA analysis showed an increase in specific surface area from 11.383 to 12.356 m²/g and an expansion in pore diameter from 6.08 to 9.49 nm. XRF analysis revealed an increase in SiO₂ content from 83.1% to 89.4%, indicating higher surface purity after activation. Batch adsorption experiments showed optimum performance at pH 4. At an initial Pb(II) concentration of 25.5 mg/L, the removal efficiency reached 99.94% with an adsorption capacity of 2.553 mg/g. Meanwhile, at 55.09 mg/L, the capacity increased to 5.072 mg/g but efficiency declined. The Langmuir isotherm is the most suitable for describing the adsorption equilibrium (R² = 0.998; qmax = 7.68 mg/g). Chemical activation effectively enhanced the performance of silica sand as an efficient and economical Pb(II) adsorbent.
PENGARUH SUHU PENGERINGAN TERHADAP IMOBILISASI LOGAM BERAT PADA BETON GEOPOLIMER YANG DISINTESIS DARI ABU LAYANG BATUBARA DAN SAMPAH KACA Nur Ruwantari, Ira; Trihadiningrum, Yulinah; Wilujeng, Susi Agustina
Al-Ard: Jurnal Teknik Lingkungan Vol. 11 No. 1 (2025): September
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/alard.v11i1.2359

Abstract

Geopolymer can be an alternative to Portland cement by using industrial and household waste as more environmentally friendly raw materials. This study investigated the effect of curing temperature on the ability of fly ash and glass waste-based geopolymer paste to immobilize heavy metals. Two compositions were used, 100% fly ash (FA) and a mixture of 50% fly ash and 50% glass waste (FA:SG). The binder in this composition was activated with 10 M NaOH and Na₂SiO₃ in a molar ratio of 1:2. The specimens were molded into cubes with dimensions of 5×5×5 cm³ and cured at temperatures of 30, 90, and 120°C for 24 hours before being stored at room temperature for 28 days. Leaching tests were carried out using the Toxicity Characteristic Leaching Procedure (TCLP) method with reference to USEPA 1311 for Pb, Cr, Cu, and Zn. The results showed that the curing temperature of 90°C with a composition of 50:50 produced the lowest metal leaching, namely B: 0.78 mg/L, Pb: 0.078 mg/L, Cd: 0.03; Cr6+: 0.02 mg/L, Cu: 0.019 mg/L, and Hg: 0.0007 mg/L, Zn: 2.71 mg/L. All of these values ​​are far below the TCLP-A quality standard threshold in PP No. 22 of 2021. These results prove that geopolymerization is effective in stabilizing heavy metals and has strong potential as a sustainable waste-based construction material.
Pengaruh Penambahan Karbon Aktif Fly Ash Batubara Terhadap Emisi Karbondioksida di Top Soil Tanah Mineral sasmita, aryo; Andrio, David; Aurelia, Keyla
Al-Ard: Jurnal Teknik Lingkungan Vol. 11 No. 1 (2025): September
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/alard.v11i1.2395

Abstract

Soil respiration is the main pathway for the transfer of carbon dioxide (CO2) emissions from ecosystems to the atmosphere, making it a major contributor to CO2 emissions from the agricultural sector. The use of activated carbon can improve the physical, chemical, and biological properties of the soil, making it a potential useful material for reducing CO2 emissions resulting from the soil respiration process. The purpose of this study was to determine the effect of adding activated carbon from coal fly ash in reducing CO2 emissions in mineral topsoil. Activated carbon was filtered with a 60-mesh sieve and activated using 30% H3PO4 for 24 hours, then added to the soil at various doses of 0, 8, 10, and 12% with an incubation time of 10 days. The activated carbon from coal fly ash produced met SNI 06-3730-1995 for water content, ash content, volatile matter content, bound carbon content, and iodine value. CO2 emissions from soil respiration rates were measured using the acid-base titration method. The results of the study showed that the addition of activated carbon from coal fly ash could not reduce CO2 emissions from the soil respiration process but instead had an impact on increasing CO2 emissions. The highest CO2 emissions were produced in soil treatment with the addition of a 10% activated carbon dose, namely 0.06144 mgCO2-C/g soil or increasing CO2 emissions by 87% compared to without the addition of an activated carbon. Activated carbon from coal fly ash in this study has met the quality requirements of activated carbon with a water content of 5%, ash content of 7%, volatile matter content of 22%, bound carbon content of 66% and iodine number value of 926.37 mg/g.

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