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Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan
Published by Universitas Diponegoro
ISSN : 1907817X     EISSN : 25500023     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences
Arjuna Subject : -
Articles 627 Documents
 59   60   61   62   63 
Sustainable Pollutant Removal through Integrated Biological, Physical, Electrochemical Treatment: Resource Recovery and LCA Study Agus Suprapto; Prabang Setyono; Jatmiko Wahyudi; Sajidan - Sajidan
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 23, No 2 (2026): July 2026
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v0i0.%p

Abstract

Vinasse from bioethanol distillation contains high levels of organic matter, suspended solids, color, sulfides, and acidity, requiring integrated treatment beyond biological methods. This study tested a sequential system comprising anaerobic digestion, aerobic oxidation, sedimentation, and electrochemical oxidation using a Ti/RuO2 anode and stainless-steel cathode at different NaCl concentrations. The system reduced pollutants in 10% diluted vinasse, lowering COD, BOD, and TSS by 97.9 %, 99%, and 93.6%, respectively, eliminating sulfide, and increasing pH to 8.2. The electrochemical step polished water by generating hydroxyl radicals and reactive chlorine species. Six grams per liter of NaCl provided optimal water quality, with high color removal, turbidity reduction, sulfide removal, and pH stabilization. The GWP of the four resource-recovery techniques was assessed in a life cycle study. Sludge and biogas recovery produced the least climatic impact, according to Monte Carlo statistical analysis, which revealed GWP emissions of 0.842–1.125 kg CO2 eq/kg treated water across four suggested scenarios with a ≤3% coefficient of variation and a tiny standard error of the mean. Overall, this system combines pollutant removal, water recovery, sludge valorization, and environmental impact assessment to provide an efficient circular method for vinasse treatment
Analysis of Solid Waste Generation, Composition, and Economic Potential Using Cost-Benefit Analysis Method Shintia Nur Asiah; Suci Wulandari; Aulia Annas Mufti; Andika Munandar; Nabila Putriyandri Alifa; Alien Abi Bianasari
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 23, No 2 (2026): July 2026
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v0i0.%p

Abstract

The Natar market is experiencing an increase in solid waste generation that has not been resolved optimally due to inadequate Temporary Waste Storage Site facilities and a lack of awareness, causing waste accumulation and the transfer of problems to the landfill. This study aimed to analyze solid waste generation and composition based on SNI 19-3964-1994 and to assess the economic potential of recycled waste and the cost-benefit analysis for organic waste processing. The amount of waste produced at the Natar Market was 884.45 kg per day and 7,902.33 liters per day. The composition of solid waste is dominated by organic waste (87.34 %), Low-Density Polyethylene plastic (8.70 %), paper/cardboard (2.14 %), Polyethylene Terephthalate plastic (1.27 %), and other types of waste less than 1%. The selected waste processing alternative was the Black Soldier Fly technology, with a scoring and weighting result of 418 points. Recycled waste has the potential to generate an economic value of IDR 2,151,796.50. The cost-benefit analysis shows that Black Soldier technology is feasible to implement with a Net Present Value of IDR 497,543,239.61, an Internal Rate of Return of 12%, and a Benefit Cost Ratio of 1.017.
Calcined Green Mussel Shell Waste as a Bioaggregate in Pervious Concrete Paver Blocks Muhammad Sholeh Arifin; Ika Bagus Priyambada; Budi Prasetyo Samadikun; Sheikh Kamran Abid
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 23, No 2 (2026): July 2026
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v0i0.%p

Abstract

Ineffective management of green mussel shell waste could worsen environmental problems. Green mussel shell waste can be used as bioaggregate, because it contains 90% CaCO3, the content is similar to limestone, which is generally chemically inert. Seashells calcined at high temperatures and fine particle size can show limited reactivity. The purpose of this study was to determine the amount of green mussel shell waste production and to determine the optimal proportion of calcined green mussel shell (GMS) bioaggregate in pervious concrete paver blocks (PCPB). The methods used were observational to calculate the amount of waste produced over 8 consecutive days and experimental to determine the mechanical and physical performance of pervious concrete paver blocks with bioaggregate substitution levels of 0%, 6%, 12%, 18%, and 24% at a test age of 28 days. The pervious concrete paver blocks were molded using an automatic hydraulic press machine that was vibrated for 10 seconds, with a mold size of 21 x 10.5 x 6 cm. The testing included the constituent materials and test specimens in accordance with the standards. Green mussel shell waste production during the 2025 planting season was 87.27 kg/day. The test results showed that the compressive strength, porosity, and permeability coefficient values were within the range recommended by ACI 522R-10 2010 and SNI 03-0691-1996 for permeable concrete used as pavement material.
Performance Evaluation and Operational Optimization of a Fine-Bubble Porous–Venturi Aeration System Niesa Hanum Mistoro; Sri Puji Saraswati; Johan Syafri Mahathir Ahmad; Henny Sudibyo; Dahlia Anggita Zahra
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 23, No 2 (2026): July 2026
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v0i0.%p

Abstract

Aeration is the most energy-intensive unit in wastewater treatment systems, particularly in shallow decentralized reactors with limited hydrostatic pressure, which, which reduces oxygen transfer efficiency. However, systematic evaluations of integrated porous–Venturi microbubble systems under shallow-water conditions are limited. This study aims to address this gap by investigating and optimizing a fine-bubble porous–Venturi microbubble generator (MBG) using laboratory-scale experiments. Clean water experiments were conducted in a 200 L batch reactor with two liquid flow rates (71.6 and 103.8 L/min) and four gas flow rates (0.15–0.60 L/min). Aeration performance was assessed using the volumetric oxygen mass transfer coefficient (KLa(20)), standard oxygen transfer rate (SOTR), and specific aeration efficiency (SAE), supported by one-way ANOVA. The results showed that the gas flow rate influenced  KLa(20) and SOT,R whereas the liquid flow rate had a dominant effect on SAE. The optimal operating conditions were identified as QL = 71.6 L/min and QG = 0.45 L/min, achieving KLa(20) of 2.23 h⁻¹ and SAE exceeding 40 kg O₂/kWh. The findings showed that optimum gas–liquid interaction leads to energy-efficient aeration performance rather than maximum flow rate supply. It also provides practical design insights for optimizing aeration systems in shallow and decentralized wastewater treatment applications
Carbon Literacy in Higher Education: A Systematic Review of CO₂ Emission Education and Its Impact on Student Behavioral Change Iwan Maryawan; Herpratiwi Herpratiwi; Sowiyah Sowiyah; Melya Riniarti; Riswanti Rini; Rini Nurindarwati; Lia Nurbanillah Fujianti
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 23, No 2 (2026): July 2026
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v0i0.%p

Abstract

Carbon literacy education has emerged as a key strategy for addressing climate change by enhancing environmental awareness and promoting pro-environmental behavior among university students. This study presents a systematic literature review examining how CO₂ emission education is conceptualized, implemented, and evaluated within higher education institutions and its influence on student behavioral change. This review synthesizes peer-reviewed studies published between 2015 and 2026, focusing on conceptual frameworks, pedagogical approaches, and behavioral outcomes. The findings indicate that carbon literacy education improves climate knowledge, strengthens environmental attitudes, and increases students’ intentions to adopt sustainable practices in the future. Pedagogical strategies, such as experiential learning, project-based learning, life cycle assessment, and campus-based sustainability initiatives, play a critical role in translating knowledge into actionable competencies. However, a persistent awareness–action gap remains, wherein increased knowledge does not consistently lead to sustained behavioral change. The effectiveness of educational interventions is strongly influenced by psychological engagement, social learning environments and institutional support. Overall, this study emphasizes the need for integrated and interdisciplinary approaches that combine cognitive, experiential, and institutional dimensions. Embedding carbon literacy across curricula and campus practices can enable higher-education institutions to foster meaningful behavioral change and contribute to climate-mitigation efforts.
Planning Sludge Bioconversion Using Black Soldier Fly Larvae in Tofu Production Centers Budi Prasetyo Samadikun; Sri Sumiyati; Bimastyaji Surya Ramadan; Lutfiana Anisa; Chintya Putri Agustin; Irfan Tawakkal
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 23, No 2 (2026): July 2026
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v0i0.%p

Abstract

Sugihmanik Village, Tanggungharjo District, Grobogan Province, is a major tofu-producing area affiliated with 20 MSMEs and the Waste Transportation Authority (PLTA). Although tofu contributes to the local economy, poor wastewater management from fish farming installations can cause environmental issues. The objective of this study was to develop an environmentally friendly and sustainable wastewater management system based on black solid fuel (BSF). The research methodology included water consumption levels and quality, steam generation, and the development of a BSF bioconversion system. The test results showed that the hydroelectric power plant produced 694.21 kg/day (0.68 m3/day) from the wastewater treatment process. The proposed model utilizes the transition of wastewater and the wastewater environment in the BSF ecosystem. This process produces valuable products, including soft BSF larvae as a protein source and BSF waste as raw material
Hair Mercury Concentrations among Residents Living Near Artisanal and Small-Scale Gold Mining Activities in Indonesia Rini Maya Sari; Muhammad Irsan; Legiran Legiran; Poedji Loekitowati Hariani; Lia Nurbanillah Fujianti
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 23, No 2 (2026): July 2026
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v0i0.%p

Abstract

Mercury use in artisanal and small-scale gold mining (ASGM) remains a major public health concern in Indonesia. This cross-sectional biomonitoring study examined the factors associated with mercury exposure among 50 adults living near ASGM activities in the Bungo District. The interview data covered sociodemographic, occupational, behavioral, and exposure-related factors, while hair mercury concentrations were measured using inductively coupled plasma mass spectrometry. Descriptive analyses, bivariate logistic screening, and multivariable logistic regression with backward stepwise selection were performed. In the final model, non-mining participants had lower odds of higher mercury exposure than mining-related workers (OR = 0.164; 95% CI: 0.030–0.892; P = 0.036). Adults aged ≥45 years had lower odds than those aged 21–44 years (OR = 0.097; 95% CI: 0.020–0.474; p = 0.004), whereas women had higher odds than men (OR = 8.032; 95% CI: 1.586–40.675; p = 0.012). The model showed moderate explanatory performance (Nagelkerke R² = 0.414) and 78.0% accuracy. These findings indicate higher exposure among younger adults, women, and mining-related workers, supporting targeted biomonitoring, occupational risk reduction, and community-based interventions in areas affected by ASGM.

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