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All Journal Jurnal Sains & Teknologi Lingkungan Journal of Applied Geospatial Information Jurnal Purifikasi Journal Serambi Engineering (JSE) Analit: Analytical And Environmental Chemistry
Arseto Yekti Bagastyo
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Physics

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Socio-economy analysis of the community in Kediri City on the implementation of restriction policy of single-use plastic usage Tarnada Zanuar, Ella Arlaydes; Arseto Yekti Bagastyo
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The increasing use of single-use plastics in Kediri City prompted the issuance of Kediri Mayor Regulation No. 30 of 2023 on restricting single-use plastics. This study analyzes plastic waste composition, community and business participation, and the factors influencing policy implementation. Plastic waste composition was measured using the quarter sampling method in three districts, while participation data were analyzed using Structural Equation Modelling (SEM-PLS). The results show that plastic bags dominate single-use plastic waste, contributing up to 90%, particularly in residential areas due to small business activities. Support for the policy is relatively high, with 74.46% of the community and 64.64% of businesses agreeing, but concrete implementation remains low. SEM-PLS analysis reveals that environmental awareness, knowledge, and attitudes significantly influence the reduction of single-use plastics, while economic income factors are not significant. Continuous education, the provision of eco-friendly alternatives, and collaboration among stakeholders are essential to enhancing policy effectiveness.
Studi Pemanfaatan Idle Capacity Instalasi Pengolahan Lumpur Tinja (IPLT) Keputih Surabaya Nurhayati, Ervin; Arseto Yekti Bagastyo; Cynthia Dyah Puspitasari; Joko Pramono; Fathyah, Fathyah; Rahayu, Dewi Puji; Subechi, Dya Nur Mangzila
Jurnal Sains dan Teknologi Lingkungan Vol. 16 No. 2 (2024): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol16.iss2.art6

Abstract

IPLT Keputih, the only fecal sludge treatment plant in Surabaya City, plays a critical role in the city's sanitation infrastructure. Its operation is critical to manage the fecal sludge generated by Surabaya residents, ensuring that the effluent is effectively treated before being safely discharged to the environment. According to previous studies, IPLT Keputih still has significant untapped potential, especially in the Solid Separation Chamber (SSC) and Grease Trap (GT) units, which have idle capacity that can be optimized to improve overall efficiency. The study involved primary and secondary data collection. Primary data was collected through comprehensive field observations and measurements, while secondary data was obtained from relevant agencies. Data analysis showed that IPLT Keputih currently treats an average of 97.71 m3 of septage per day. However, the facility has an idle capacity of 139.89 m3/day, which indicates a great opportunity to improve utilization. The calculation of the existing idle capacity was conducted based on the maximum discharge of sludge entering the IPLT Keputih in 2022. Several scenarios were developed to fully utilize the idle capacity of the SSC and GT units. The scenarios include the optimization of the SSC unit through improved desludging services, the optimization of the SSC and GT through improved non-fecal sludge management services for restaurants, as well as the implementation of a blended approach to improve the overall service of IPLT Keputih.
REMOVAL OF NAPTHOL DYE FROM BATIK WASTEWATER USING CHITOSAN FROM BLACK SOLDIER FLY PUPAL EXUVIAE Putri Rayhani Rahmania; Arseto Yekti Bagastyo
Analit : Analytical and Environmental Chemistry Vol. 9, No. 01 April (2024) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/analit.v9i01.191

Abstract

This research discussed about the application of chitosan from black soldier fly (BSF) pupal exuviae as an adsorbent in the adsorption of napthol dyes in batik wastewater. The adsorption process was carried out in batch process with the aim of analyzing the dye removal efficiency and adsorption capacity as affected by solution pH and adsorbent dosage, as well as determining the appropriate adsorption kinetics model to be applied. Changes in dye concentration were analyzed for absorbance using a spectrophotometer. The results of the adsorption process research showed that the optimal pH and adsorbent dose were at pH 4 and 0.4 g/L with removal efficiency reaching 92%. The removal efficiency decreased with increasing pH. The increasing amount of adsorbent, the removal efficiency decreased. However, after reaching the optimal dose, the addition of chitosan mass no longer gave a significant increase in the removal efficiency, indicating that the saturation point had been reached. The adsorption process tends to follow a pseudo second-order kinetics model with a maximum adsorption capacity of 344.82 mg/g.
Analysis of Electronic Waste Flows and Urban Mining Potential in Surabaya Rizka Nur Amalia Rachmani; Arseto Yekti Bagastyo
Journal of Applied Geospatial Information Vol. 10 No. 1 (2026): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v10i1.12221

Abstract

The increase in population, consumption, and technology use has led to a surge in electronic waste, a serious environmental issue. In Indonesia, e-waste management is still primarily handled by the informal sector, with limited regulation and technology, posing risks to the environment and public health. Gunung Anyar District was selected as the study area for this research to analyze household electronic waste flows and the role of the informal sector on urban mining, using Material Flow Analysis (MFA). Potential household e-waste generation was estimated through questionnaires and interviews with 100 households, while additional surveys of the informal sector, TPSSS B3 (Hazardous and Toxic Waste Storage and Management Facility), and waste banks were conducted to trace distribution pathways. Informal sector actors were surveyed using snowball sampling. The potential household e-waste generation in Gunung Anyar is 303.957,35 kg/year. Most e-waste is stored in homes or sold to collectors, with only a small fraction entering waste banks and TPSSS B3. Collectors, both dismantlers and non-dismantlers, act as key nodes in informal urban mining by channeling metal fractions to industries and other collectors, while generating substantial residues that end up at transfer stations and landfills. Although donations and repairs extend product lifespans, a large share of e-waste remains underutilized and environmentally hazardous. These findings highlight the need for stricter regulation and more structured systems to integrate informal actors and reduce environmental and public health impacts.
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.
Co-Authors Cynthia Dyah Puspitasari Deqi Rizkivia Radita Dewi Puji Rahayu Ervin Nurhayati, Ervin Fathyah, Fathyah Joko Pramono Putri Rayhani Rahmania Putri Rayhani Rahmania Rizka Nur Amalia Rachmani Shafa Dahniar Ashara Subechi, Dya Nur Mangzila Tarnada Zanuar, Ella Arlaydes Zuhaida Mohd-Zaki