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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Teknik ITS IPTEK Journal of Proceedings Series Jurnal Teknologi Journal of Degraded and Mining Lands Management Jurnal Purifikasi Al-Ard: Jurnal Teknik Lingkungan Specta Journal of Technology Berkala Penelitian Hayati
Yulinah Trihadiningrum
ITS Surabaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology

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Utilization of Pyrolysed Tyres Scrap as Heavy Metal Adsorbent Surya, Surya; Trihadiningrum, Yulinah; Nisaa, Ainul Firdatun
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 3 (2025): November 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i3.964-979

Abstract

Scrap tires continuously generated due to increasing motorized vehicle use. In Indonesia, tire waste generation reaches approximately 11 million tons annually. One processing method is pyrolysis, which converts tires into carbon, oil, and metals. However, the carbon, comprising 25–30% of tire conten, remains underutilized. This study aims to compare the performance of Tire-derived Activated Carbon (TAC) and Commercial Activated Carbon (CAC) in Pb(II) removal from wastewater. The carbon was activated using 98% H₂SO₄ (1:1 w/w) and heated in a fluidized bed reactor at 600, 650, and 700 °C for 1 hour. The optimal TAC was produced at 600 °C, with a specific surface area of 103.162 m²/g. FTIR analysis confirmed the presence of -OH, C=C, and C=O functional groups, and SEM revealed a porous structure. Adsorption tests at varying pH and initial Pb(II) concentrations showed optimum performance at pH 5 and 30 mg/L. The Langmuir model fitted the data well, indicating monolayer adsorption on a homogeneous surface. TAC achieved 96.32% removal efficiency in synthetis medium and a maximum adsorption capacity of 240.80 mg/g, significantly higher than CAC (62.68%, 151.366 mg/g). These results demonstrate the potential of TAC as an effective low-cost alternative adsorbent for heavy metal removal. 
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 Abd. Rasyid Syamsuri Aminatus Sa'diyah Andriati, Siti Choni Andy Mizwar Anisa, Elok Dian Karisma Pagri Annisa Hanako Arlini Dyah Radityaningrum Arseto Yekti Bagastyo Ayu Auliya Rahmah Bagas Ari Wijaya Fathia Dianti Anandita Gde Prima Tangkas Gina Lova Sari Ignatius Chandra Setyanto Ihsan Aulia Pamayo Iswatie, Maya Kalimantoro, Thaniya Triagustine Lusya Sevyana Octavia M. Al Muhdhar Mar`atusholihah Mar`atusholihah Mimien Henie Irawati Mutiara Aulia Adi Nisaa, Ainul Firdatun Nur Ruwantari, Ira Rachman, Ranno Marlany Radita, Deqi Rizkivia Rhenny Ratnawati Royyan Anrozi RR. Ella Evrita Hestiandari Salsabila Sifa Susanto Sani, Muhammad Irfansyah Naufal Sholikah, Umi Surya Surya Umi Sholikah Uniadi Mangidi Wilujeng, Susi Agustina