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Ervin Nurhayati
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purifikasi@gmail.com
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+6281339952643
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Department of Environmental Engineering, ITS Campuss, Sukolilo, Surabaya, Indonesia
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Kota surabaya,
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INDONESIA
Jurnal Purifikasi
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : 14113465     EISSN : 25983806     DOI : -
Core Subject : Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Environmental Science
Jurnal Purifikasi was published since January 2000 by Division of Journal Purifikasi Department of Environmental Engineering-Faculty of Civil, Environment and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya in collaboration with the Association of Indonesian Sanitary and Environmental Techniques (IATPI) East Java. Jurnal Purifikasi is published twice a year in July and December, covers topics on technology and management related to environmental engineering field.
Arjuna Subject : -
Articles 395 Documents
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RELATIONSHIP BETWEEN RECLAMATION LAND COVER BASED ON THE NORMALIZED DIFFERENCE VEGETATION INDEX AND VOID WATER CHARACTERISTICS AT MELAWAN PANEL 2 Gigih Anugrah Irfatongga; Harmin Sulistyaning Titah; Nur 'Izzati Ismail
Purifikasi Vol 25 No 1 (2026): Journal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/purifikasi.v25i1.535

Abstract

Open-pit coal mining leaves post-mining pit lakes (voids) filled with rainwater and surface runoff, exhibiting complex physicochemical characteristics. This study analysed the relationship between reclamation land cover quality based on the Normalized Difference Vegetation Index (NDVI) and water quality characteristics of Void Melawan Panel 2, PT Kaltim Prima Coal, East Kutai Regency, East Kalimantan, Indonesia. The dynamics of reclamation land cover were assessed using multitemporal Sentinel-2 satellite imagery from 2020 to 2026 and classified into four NDVI categories: non-vegetation, low vegetation, moderate vegetation, and high vegetation. Water quality was evaluated based on pH, Total Suspended Solids (TSS), iron (Fe), and manganese (Mn) through purposive sampling at nine monitoring points across three depth zones (surface, middle, and bottom) during both dry and rainy seasons from 2024 to 2026. Spatial analysis was conducted using QGIS, trend analysis was performed using Kendall’s tau-b, and relationships among variables were assessed using Spearman correlation. The results showed that the proportion of moderate vegetation increased significantly from 18% to 54%, while the mean NDVI increased from 0.17 to 0.27 (τ = 0.851; p < 0.05). Void water quality characteristics remained relatively stable and complied with the standards stipulated in the Indonesian Ministerial Decree of Environment No. 113 of 2003. Spearman correlation analysis revealed a strong positive relationship between NDVI and pH (r = 0.690; p < 0.001) and a strong negative relationship between NDVI and Mn (r = −0.628; p < 0.001), whereas the relationships between NDVI and TSS and between NDVI and Fe were not statistically significant. These findings indicate that the development of reclamation vegetation within the catchment area is associated with the environmental stability of the void aquatic system.
EFFICIENCY OF SOIL WASHING IN REMOVING PETROLEUM HYDROCARBON RESIDUES Rasyidan Rizqi Ramadhan; Harmin Sulistiyaning Titah; Nur ’Izzati Ismail
Purifikasi Vol 25 No 1 (2026): Journal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/purifikasi.v25i1.538

Abstract

Soil contamination by petroleum hydrocarbon residues, particularly from used motor oil, requires effective and relatively simple remediation technology. This study evaluated the efficiency of pilot-scale soil washing using the non-ionic surfactant Polysorbate 80 to remove Total Petroleum Hydrocarbon (TPH) from artificially contaminated sandy soil. The contaminated medium was prepared by mixing commercial sand and used motor oil at a ratio of 85:15, resulting in an initial TPH concentration of 13.5039% or 135,039.42 mg/kg. Pilot-scale batch soil washing was conducted using a drum rotary agitator at 50 rpm with variations in Polysorbate 80 concentration (0.5%, 1.5%, and 2.5%), washing time (30, 60, and 90 min), and solid/liquid ratio (1:5, 1:10, and 1:15). TPH was analyzed using a gravimetric method, and the removal efficiency was calculated based on the difference between the initial and final concentrations. The results showed that soil washing removed TPH with efficiencies ranging from 68.72% to 92.40%. The highest efficiency of 92.40% was achieved at 1.5% Polysorbate 80, a 60 min washing time, and a 1:10 solid/liquid ratio. A low surfactant concentration of 0.5% also produced a high removal efficiency, reaching 89.66% at 30 min and a 1:10 ratio. In contrast, a 2.5% surfactant concentration combined with a short washing time produced the lowest efficiency, presumably due to stable emulsion formation and mass-transfer limitations. These findings indicate that pilot-scale soil washing with Polysorbate 80 is effective in removing TPH from sandy soils, particularly under low-to-moderate surfactant concentrations and a 30–60 min contact time.
ASSESSMENT OF MICROPLASTIC POLLUTION LOAD INDEX IN GISIK CEMANDI RIVER ESTUARY Shafa Dahniar Ashara; Arseto Yekti Bagastyo; Zuhaida Mohd-Zaki; Deqi Rizkivia Radita
Purifikasi Vol 25 No 1 (2026): Journal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/purifikasi.v25i1.540

Abstract

Plastic waste pollution has become a serious environmental issue in Indonesia, particularly in aquatic ecosystems where plastics degrade into microplastics. This study aims to identify the abundance, characteristics, and ecological risk of microplastics in the water and sediment of the Gisik Cemandi River Estuary, Sidoarjo. Sampling was conducted at six stations during the morning and afternoon, covering surface and mid-depth layers for water, and sediment. Microplastics were extracted using the NOAA method and observed under a stereo microscope. The results showed that microplastics were present in all samples. The abundance in water reached 339 particles/L in the morning and 356 particles/L in the afternoon. The mid-depth layer contained a higher concentration of microplastics (209 particles/L) compared to the surface layer (153 particles/L). Fibers were the most dominant shape (90-92%), while black was the most frequent color (57-60%), and the dominant size ranged from 0.1 to 0.5 mm. The ecological risk assessment using the Pollution Load Index (PLI) indicated values ranging from 11.40 to 18.03 in the morning (Moderate Risk) and up to 28.98 in the afternoon (High Risk), with Station D consistently showing the highest risk levels. These findings highlight the significant influence of domestic and fishing activities on microplastic pollution in the estuary, necessitating urgent mitigation strategies.
DOXYCYCLINE PHOTOCATALYTIC DEGRADATION USING MESOPOROUS CARBON NITRIDE (MCN) UNDER VISIBLE LIGHT Azzahra Hanggararas Sasdika; Ervin Nurhayati; Isni Arliyani; Muchammad Tamyiz; Adhi Yuniarto; Yu Syuan Liou; Checia Hu
Purifikasi Vol 25 No 1 (2026): Journal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/purifikasi.v25i1.541

Abstract

Antibiotic contamination in aquatic environments has become a global concern due to its potential contribution to antimicrobial resistance and adverse impacts on aquatic ecosystems. Photocatalysis using carbon nitride-based semiconductor materials has emerged as a promising approach for the removal of antibiotic pollutants. This study aimed to evaluate the performance of Mesoporous Carbon Nitride (MCN) for the degradation of DOX under visible-light irradiation at initial concentrations of 0.5, 5, 20, and 50 mg/L. Photocatalytic experiments were conducted in a laboratory-scale reactor equipped with a magnetic stirrer to maintain solution homogeneity. DOX concentration was determined using UV–Vis spectrophotometry, while ammonia (NH₃-N) analyses were performed to investigate compound transformation during the degradation process. The results demonstrated that both irradiation time and initial DOX concentration significantly influenced the degradation performance. The highest degradation efficiency was achieved at an initial concentration of 50 mg/L, reaching 36.51% after 150 min of visible-light irradiation, whereas the degradation efficiency at 20 mg/L was 12.29%. Degradation rate analysis revealed maximum values of 0.103 mg L⁻¹ min⁻¹ and 0.514 mg min⁻¹ g⁻¹ at 50 mg/L. Changes in ammonia concentration indicated that the photocatalytic process not only promoted DOX degradation but also facilitated the transformation of nitrogen-containing compounds during the reaction. Meanwhile, the apparent negative degradation efficiencies observed at 0.5 and 5 mg/L were attributed to analytical limitations associated with UV–Vis measurements at low concentrations. These findings demonstrate the potential of MCN as a visible-light-responsive photocatalyst for the treatment of antibiotic-contaminated wastewater.
ANALYSIS OF AIRBORNE MICROPLASTICS IN SCHOOL INDOOR ENVIRONMENTS IN JEMBER REGENCY Cantika Almas Fildzah; Yogy Nur Fadillah; Abdur Rohman; Farid Zulfa Fakhruddin
Purifikasi Vol 25 No 1 (2026): Journal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Planning, and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/purifikasi.v25i1.543

Abstract

Plastic can degrade into smaller particles ranging from 1 μm to 5 mm, known as microplastics. Due to their small size, microplastics can be easily inhaled and enter the human respiratory system. The high respiratory rate and underdeveloped immune systems of children make them more vulnerable to exposure to airborne microplastics. This study aimed to determine the characteristics and abundance of airborne microplastics in school indoor environments in urban areas of Jember Regency. The study was conducted in four schools representing different educational levels, namely kindergartens and junior high schools, selected using stratified random sampling. Sampling was carried out using a passive sampling method by placing stainless-steel boxes at a height of 1.2 m for 24 hours. Sample pre-treatment included filtration using 1.2 μm filter paper, density separation using ZnCl₂ (1.6 g/cm³), and organic matter digestion using 30% H₂O₂. Microplastic abundance and characteristics were then analyzed using microscopy and Fourier Transform Infrared Spectroscopy (FTIR). The highest microplastic density was found in Kindergarten A, reaching 2,239 particles/m²/day, followed by Junior High School C (1,143 particles/m²/day), Junior High School D (1,109 particles/m²/day), and Kindergarten B (603 particles/m²/day). Fiber-shaped microplastics were the dominant form, followed by fragments. Black-colored particles with sizes ranging from 0.2 to 2 mm were most frequently observed, polyethylene terephthalate (PET) and Polyvinyl Alcohol (PVA) were identified in the sample.

Page 40 of 40 | Total Record : 395

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