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All Journal Journal of Applied Geospatial Information SUSTINERE: Journal of Environment and Sustainability Jurnal Purifikasi
Arseto Yekti Bagastyo
Institut Teknologi Sepuluh Nopember
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science Physics

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Removal of ammonium and phosphate in the simulated wastewater by using coal fly ash adsorbent Komala Affiyanti Affandi; Arseto Yekti Bagastyo
Sustinere: Journal of Environment and Sustainability Vol. 5 No. 1 (2021): pp. 1 - 63 (April 2021)
Publisher : Center for Science and Technology, IAIN Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22515/sustinere.jes.v5i1.129

Abstract

The main composition and availability of fly ash cause this waste which has potential as an adsorbent to remove ammonium and phosphate in water. Difference of main composition will cause different removal efficiency. The purposes from this research are to determine optimal condition for removing concentration ammonium and phosphate and to determine the source of fly ash which has great potential for ammonium and phosphate removal in solution. The optimal conditions were carried out by varying pH of solution and adsorbent dosages to remove ammonium and phosphate concentrations in different initial concentrations. Optimum pH of solution in this research is 8 with range of ammonium removal efficiency 8% to 14% and 16% to 75% for removing phosphate which has condition ammonium concentration higher than phosphate. Ammonium concentration lower than phosphate will have a negative effect on the removal. Adsorbent dosage of 4.5 g is able to produce optimal removal efficiency both ammonium and phosphate. From five different sources of fly ash, Punagaya fly ash has the great potential for removal ammonium and phosphate simultaneously which has an adsorption capacity of 7.17 mg/g and 19.50 mg/g for ammonium and phosphate respectively.
Integrating Material Recovery Facilities and RDF Technology for Waste Optimization in Small Cities: a Material Flow Analysis Nando Ade Amarylly Putra; 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.v10i1.12168

Abstract

The challenge of significantly increasing waste generation is not exclusive to metropolitan areas but is also faced by small cities, including Biak Numfor Regency, particularly within the population centers of Biak Kota and Samofa Districts. This study employs Material Flow Analysis (MFA) to map waste flows and evaluate technological interventions based on primary sampling data referring to SNI 3964:2025. The analysis reveals a waste composition dominated by organics (41.25%) and plastics (26.18%). Simulation results indicate that Scenario II, deploying six units of Material Recovery Facilities (TPS 3R), effectively meets National Medium-Term Development Plan of the Republic of Indonesia (RPJMN) 2029. Furthermore, Scenario III, which integrates TPS 3R with a Refuse Derived Fuel (RDF)-based Integrated Waste Processing Site (TPST), successfully suppresses landfill residue to below 10%, aligning with the National Long-Term Development Plan of the Republic of Indonesia (RPJPN) 2045. It is concluded that the proposed integrated infrastructure is technically feasible for achieving national reduction mandates. However, practical implementation requires fundamental operational reforms, specifically rigorous source segregation and modernized collection logistics to maintain feedstock quality and facility performance.
PLASTIC PARTICLE CONTAMINATION IN SUBSTRATE AND FRASS OF BLACK SOLDIER FLY LARVAE CULTIVATION IN COMMUNITY SOLID WASTE RECYCLING CENTERS Lusya Sevyana Octavia; Arseto Yekti Bagastyo; Yulinah Trihadiningrum
Purifikasi Vol 24 No 1 (2025): Jurnal 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.v24i1.487

Abstract

Bioconversion of solid waste (SW) by black soldier fly (BSF) is a promising sustainable SW treatment approach. However, insufficient segregation may lead to plastic contamination in BSF larvae (BSFL) substrates, compromising the quality of BSFL-derived products and potentially introducing plastic particles into the food chain. This study aimed to investigate plastic abundance in SW from different sources and determine abundance of plastic particles in BSFL substrates and frass. The research was conducted at the Jambangan Recycling Center (JRC) and the Wonorejo Composting Center (WCC) in Surabaya, Indonesia. The results showed that 74% of SW at JRC was suitable for BSFL substrate, while only 36.62% of SW can be used in WCC. The amount of plastic abundance in the BSFL substrate in JRC and WCC were 2.28% and 7.63%, respectively. At JRC, 12 macroplastic (MaP), 9 mesoplastic (MeP), and 334 microplastic (MP) particles were detected per kilogram dry-weight (DW) of BSFL substrate, whereas 250 MP particles were found in frass. The insufficient SW segregation at the WCC has led to an abundance of plastic particles per kilogram DW of BSFL substrate (i.e., 40 MaP, 35 MeP, and 734 MP particles) and frass (484 MP particles). Plastic transparent films were mostly found in both substrates and frass. The size of MaPs typically ranged from 2.5 to 10 cm, while MPs predominantly fell within the 1 µm to 1 mm range. These findings highlight the importance of source segregation to reduce plastic contamination and enhance the efficiency and safety of BSF bioconversion process.
Co-Authors Komala Affiyanti Affandi Lusya Sevyana Octavia Nando Ade Amarylly Putra Yulinah Trihadiningrum