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All Journal Journal of Educational Research and Evaluation Tropical Aquatic and Soil Pollution Industrial and Domestic Waste Management Civil and Sustainable Urban Engineering INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY
Wijayanti, Yureana
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Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Public Health Social Sciences Transportation Other

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Exploring the Potential of Composting for Bioremediation of Pesticides in Agricultural Sector Lau, Yu Yan; Hernandes, Erika; Kristanti, Risky Ayu; Wijayanti, Yureana; Emre, Mehmet
Industrial and Domestic Waste Management Volume 3 - Issue 1 - 2023
Publisher : Tecno Scientifica Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/idwm.v3i1.245

Abstract

The rapid expansion of the human population has raised the chemical stress on the environment due to the increased demand of agricultural yields. The use of pesticides is the primary contributor to environmental chemical stress, which is essential for agricultural expansion in order to produce enough food to sustain the burgeoning human population. Pesticide residues in soil have grown to be a subject of rising concern as a result of their high soil retention and potential harm to unintended species. Diverse remediation strategies, such as physical, chemical, and biological, for limiting and getting rid of such contaminants have been put forth to deal with this problem. Bioremediation is one of these techniques, which has been deemed the best for reducing pollution because of its low environmental impact, simplicity of operation and construction. Microorganisms are implemented in this technique to break down and get rid of toxins in the environment or to reduce the toxicity of chemical compounds. This study thoroughly analyses the different composting soil remediation methods, including landfarming, biopiles, and windrows, to reduce and eliminate soil pollution. Although biological treatment is the best option for cleaning up polluted soil, it is still important to evaluate and review the approaches over the long term to determine whether they are effective in the field. It is because the reactivity of the microorganisms is highly dependent on environmental parameters, and the contemporary environment is characterised by unpredictable weather patterns, localised droughts, and temperature fluctuations.
ASSESSING GROUNDWATER QUALITY IN NORTH JAKARTA: A STATISTICAL APPROACH Wijayanti, Yureana; Kusumadewi, Riana Ayu; Wijaya, Nicholas Albert; Safitri, Lisma; Kristanti, Risky Ayu
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 8, NUMBER 1, APRIL 2025
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v8i1.18152

Abstract

Aims: This study investigates the groundwater quality in North Jakarta. Methodology and results: The groundwater data from thirty-one sampling sites were analyzed for physical and chemical parameters such as total dissolved solids (TDS), pH, turbidity, nitrate (NO3), sulfate (SO4), chloride (Cl), manganese (Mn), fluoride (F), and iron (Fe). Principal Component Analysis (PCA) and Spearman’s correlation matrix were utilized to evaluate the contamination sources. Conclusion, significance, and impact study: The findings reveal significant variability in chloride and total dissolved solids (TDS) concentrations, while fluoride levels remained stable. Strong correlations were found between TDS and chloride, as well as, turbidity and iron, suggesting contamination from seawater intrusion and industrial activities. PCA identified four key components explaining 77% of the total variance. The first component, dominated by TDS, turbidity, iron, and chlorine, indicates ongoing seawater infiltration in the coastal aquifer. The second component, associated with turbidity, nitrate, and fluoride, indicates contamination from human activities. This study shows the value of multivariate statistical techniques like PCA, in assessing groundwater quality. The correlation matrix further confirms the influence of seawater on groundwater salinity and the presence of heavy metals, possibly due to soil disturbance. Moreover, there is an influence of geological and geographical factors, particularly the excessive groundwater extraction leading to seawater intrusion and groundwater quality deterioration. 
The The Barriers in Online Assessment for Professional Certification: A Case Study In Indonesia Citra Manggalasari, Lena; Jantos, Anne; Koehler, Thomas; Yuliastuti, Yuliastuti; Wijayanti, Yureana; Setyandito, Oki; Sutarto, Sutarto; Wisni Septiarti, Serafin
Journal of Education Reseach and Evaluation Vol 7 No 1 (2023): February
Publisher : LPPM Undiksha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jere.v7i1.53839

Abstract

Certification exams conducted online must be of the same quality as those conducted on-site. To achieve this, it is necessary to conduct a study in which assessors need to identify obstacles in implementing online certification examinations which have been implemented during the Covid-19 pandemic. The study aims to analyze the perspective of the assessors to identify the barrier factors, understand the interrelation among them, and propose improvements to the online application process. The method applied was the MICMAC (Matrix of Cross-impact Multiplications Applied to Classification), a structural model, to analyze the variables based on their influence and dependence driving force. A case study was conducted on the Indonesia Hydraulic Engineer Association. The data was collected from a focus-group discussion with the assessors. The result revealed that the barrier factors consist of technical aspects, such as internet connection delay, hackers and viruses, and unverified e-document; and social aspects, such as questioning skills limitation, non-verbal communication skills limitation, and environment distraction. The study found that internet connection delay and questioning skill limitations are the barriers with the highest influence beyond other barriers in the online assessment process. Also, the questioning skills limitation factor has the highest dependency on other barriers. Hence, it can be proposed that the curricula of the assessors’ training and/or certification program, should be incorporated with the questioning skill in an online assessment environment.
Phytoremediation Mechanism for Emerging Pollutants : A Review Kristanti, Risky Ayu; Tirtalistyani, Rose; Tang, Yien Yu; Thao, Nguyen Thi Thanh; Kasongo, Joseph; Wijayanti, Yureana
Tropical Aquatic and Soil Pollution Volume 3 - Issue 1 - 2023
Publisher : Tecno Scientifica Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/tasp.v3i1.222

Abstract

As a result of urbanization and industrialization, emerging pollutants have become a global concern due to contamination and their potential adverse effects on the ecosystem and human health. However, the characteristics and environmental fate of emerging pollutants remain unclear due to the limitations of current technologies. Emerging pollutants are predominantly released into the environment through anthropogenic activities and accumulate in water, soil, air, and dust. Despite their typically low concentrations in the environment, exposure to these pollutants can result in endocrine disruption and other health impacts on the human body, as well as oxidative stress in organisms. Phytoremediation is a green biotechnology that utilizes plants in association with microorganisms to mitigate pollutants in contaminated areas through various mechanisms. It represents a cost-effective and environmentally friendly approach, although its efficacy can be hindered by both the biological condition of plants and ecological factors. Moreover, phytoremediation generally requires a longer remediation timeframe compared to alternative technologies. The remediation of emerging pollutants aligns with the "green liver model" theory, which encompasses translocation, internal transformation and conjugation, and sequestration as classification categories. Presently, several challenges are being encountered in this field, including a lack of information regarding emerging pollutants and their metabolism in plants, the absence of a modeling framework and standardized monitoring practices, limitations in sampling and analysis technologies, as well as phytoremediation technologies. Therefore, further research is warranted to delve into the behavior of emerging pollutants and their interactions with plants, aiming to develop or enhance existing technologies. Additionally, the concept of phytomanagement should be considered, as it offers a sustainable approach to environmental remediation.
Sustainable Water Management Strategies for Mitigating Pesticide Pollution in Urban and Agricultural Areas Primus, Audrey; Siganul, Aimie Peace; Emalya, Nikita; Yusnar, Cut; Wijayanti, Yureana; Rubiyatno; Permana, Rega; Park, Sang Hyeok; Thakali, Ocean; Aina, Corry; Wahyuningsih, Ni Putu Sri; Commey, Nii Amarquaye
Civil and Sustainable Urban Engineering Volume 5 - Issue 1 - 2025
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v5i1.629

Abstract

The indiscriminate use of pesticides in Malaysian agriculture poses serious risks to both human health and groundwater quality.This study aims to evaluate the extent of pesticide contamination in Malaysian groundwater, identify its major sources, and examine current mitigation efforts. The primary routes of contamination include direct application, soil leaching, and surface runoff, with over twenty pesticide compounds listed as priority hazardous substances, commonly linked to oil palm, rice, and vegetable farming. Residential and industrial activities also contribute to the pollutant load. Due to their long environmental persistence, pesticides threaten aquatic ecosystems through bioaccumulation and biomagnification and increase the risk of severe health issues, including neurological disorders, reproductive problems, and cancer. Regulatory controls such as exposure limits and monitoring programs have been implemented to manage these risks. This review concludes that while regulatory mechanisms exist, more robust and proactive approaches are needed to mitigate groundwater contamination. Future efforts should focus on expanding the adoption of sustainable farming practices, strengthening groundwater monitoring, and enhancing regulatory enforcement to ensure long-term environmental and public health protection.
ARTIFICIAL RECHARGE FOR SUSTAINABLE GROUNDWATER MANAGEMENT PLAN IN YOGYAKARTA Verma, Nishi; Anda, Martin; Wijayanti, Yureana
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY Volume 2, Number 2, April 2019
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v2i2.4364

Abstract

Aim: This study investigates the development of a sustainable groundwater management strategy in Yogyakarta province through groundwater recharge technologies. This study also compares technologies used in the province and the one already implemented in Perth due to its similar nature in site geology and hydrogeology. Methodology and Results: Primary and secondary data were collected and analyzed. Water depth and hydraulic conductivity data were analyzed using permeameter and GIS program. GIS image analysis of water depth and hydraulic conductivity suggested that the placement of potential aquifer recharge sites would be best suited in the north-east part of the province, slightly outside the study area, to provide water for all. Two recharge schemes of an infiltration basin and an injection well with storm water detention tank were proposed. The injection well was decided upon, despite its higher cost, due to the impermeability of soils in Yogyakarta and possible water seepage to the environment. Similar to Perth’s Hartfield park scheme, an injection well would directly bypass these soil layers to recharge the aquifers with rainwater and storm water. Hartfield Park injects 4400 kL of water/year. Conclusion, significance and impact study: The findings of this study indicate aquifer recharge is a possible solution to overcome Yogyakarta’s high abstraction. Further studies recommend that injection well trials are further developed in terms of location, depth and sizing.
TEMPORAL VARIATION OF GROUNDWATER QUALITY IN SLEMAN, YOGYAKARTA, INDONESIA Wijayanti, Yureana; Fittkow, Markus; Kusumadewi, Riana Ayu; Setyandito, Oki
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 1, OCTOBER 2021
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i1.10746

Abstract

Groundwater quality evaluation is important to gain an insight of contamination source. It can later be utilized to review the implementation of a water resource management policy in a specific region. Aim: This study evaluate the short-term temporal variation of groundwater quality and its possible contamination source in Sleman, Yogyakarta. Methodology and Results: the statistical approach was utilized using boxplot, principle component analysis (PCA) and correlation matrices, to the data for 50 sampling sites. The data of groundwater quality are available from the local environmental authority of Environmental Agency Sleman.The box plots revealed that groundwater quality might largely influenced by rainfall in the area. The factor loading of PCA presented that the ratio of concentration of both chloride and TDS are the most varied of all samples, and the less variable parameter is fluoride. The pair of groundwater quality parameter which had strong correlation were varied in each year, except for TDS and chloride that showed strong correlation in all three years. Nitrite had strong correlation with iron in 2017 and, nitrite also had strong correlation with both manganese and fluoride in 2019. The existence of fluoride in correlation with other parameter might give an insight of contamination from livestock wastes, where in the study area there are many poultry and cow farms, and small scale chicken slaughter industries. Conclusion, significant and impact study: This study gives preliminary understanding on temporal variation of groundwater quality, for further research on groundwater quality in Sleman, Yogyakarta.
STUDY OF MODIFIED PERFORATED BREAKWATER AS RENEWABLE ENERGY DEVICE Setyandito, Oki; Novandy, Novandy; Nizam, Nizam; Anda, Martin; Kusumadewi, Riana Ayu; Wijayanti, Yureana
INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY VOLUME 5, NUMBER 2, APRIL 2022
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/urbanenvirotech.v5i2.13536

Abstract

Aim: This study investigates to determine the influence of wave steepness, relative freeboard, and breaker parameters on overtopping discharge at a perforated breakwater. Methodology and results: The research method used was using both a numerical model simulations on three-dimensional computational fluid dynamics (CFD) modelling software namely FLOW-3D; and empirical equation computation. The evaluation of both approaches were performed for understanding the characteristics of wave discharge that overtopping the perforated breakwater. The experimental results of modified perforated breakwater revealed that the lowest slope possible with the highest porosity possible can generate the highest value of dimensionless overtopping discharge for wave energy harvesting. Conclusion, significance and impact study: The findings of this study formulated the optimum slope and porosity to the highest wave energy harvested. Further studies recommend that data collection from onsite trials of modified perforated breakwater are performed.
Valorization of Palm Oil Fuel Ash for Sustainable Partial Cement Replacement in Concrete: A Mini Review Boateng, Kwame Mensah; Owusu, Abena Serwaa; Mohd Yazid, Siti Farhana; Puspitasari, Surya Dewi; Wijayanti, Yureana
Civil and Sustainable Urban Engineering Volume 5 - Issue 2 - 2025
Publisher : Tecno Scientifica Publishing & Society of Tropical Science and Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53623/csue.v5i2.819

Abstract

Palm Oil Fuel Ash (POFA), a by-product from the combustion of palm oil mill residues, has emerged as a highly promising supplementary cementitious material (SCM) to enhance sustainability in the construction industry. This paper reviews the physical and chemical characteristics, mechanical performance, optimal replacement levels, and the associated economic and environmental implications of incorporating POFA in concrete. Physically, POFA is characterized by its low specific gravity, initially coarse particle size, and porous structure, which can be refined through grinding to achieve finer particles with increased surface area and improved pozzolanic reactivity. Chemically, POFA is rich in silicon dioxide (SiO₂), with appreciable amounts of aluminium trioxide (Al₂O₃) and ferric oxide (Fe₂O₃), meeting the ASTM International C618-12 requirements for Class F pozzolans. These characteristics enable POFA to react with calcium hydroxide produced during Ordinary Portland Cement (OPC) hydration, forming additional calcium silicate hydrate (C-S-H) gel, thereby enhancing strength and durability. Experimental studies have demonstrated that partial replacement of OPC with finely ground POFA, particularly at levels between 10–30%, can improve long-term compressive strength, reduce permeability, and enhance resistance to chloride penetration and sulphate attack. Economically, incorporating POFA reduces dependence on energy-intensive OPC, resulting in lower production costs, while environmentally, it minimizes landfill waste, decreases greenhouse gas emissions, and promotes circular economy practices. In palm oil-producing nations such as Malaysia and Indonesia, utilizing POFA in concrete can simultaneously address the challenges of industrial waste management and cement industry decarbonization, offering a viable pathway towards sustainable construction.
Co-Authors Aina, Corry Anda, Martin Boateng, Kwame Mensah Citra Manggalasari, Lena Commey, Nii Amarquaye Emalya, Nikita Emre, Mehmet Fittkow, Markus Hernandes, Erika Jantos, Anne Kasongo, Joseph Koehler, Thomas Kusumadewi, Riana Ayu Lau, Yu Yan Mohd Yazid, Siti Farhana Nizam Nizam Novandy, Novandy Oki Setyandito, Oki Owusu, Abena Serwaa Park, Sang Hyeok Primus, Audrey Puspitasari, Surya Dewi Rega Permana Risky Ayu Kristanti Rose Tirtalistyani Rubiyatno Safitri, Lisma Serafin Wisni Septiarti Siganul, Aimie Peace Sutarto Sutarto Tang, Yien Yu Thakali, Ocean Thao, Nguyen Thi Thanh Verma, Nishi Wahyuningsih, Ni Putu Sri Wijaya, Nicholas Albert Yuliastuti Yuliastuti Yusnar, Cut