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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Purifikasi
Nisaa, Ainul Firdatun
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Environmental Science

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KEBIJAKAN PENGELOLAAN SAMPAH PLASTIK DI INDONESIA: STUDI KASUS KOTA SURABAYA Nisaa, Ainul Firdatun
Purifikasi Vol 20 No 1 (2020): 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/j25983806.v20.i1.401

Abstract

Plastic waste management has been in the spotlight in recent years because the amount of plastic waste generation increases every year. Likewise, with the potential for plastic waste that is mismanaged or leaked into the environment, such as being leaked into water bodies and ending up in the ocean. The plastic waste policy implemented by the Indonesian government has started to be adopted in several cities in Indonesia, including in Surabaya. However, there are still gaps in policies at the national and regional levels, such as the issuance of regulations regarding the ban on single-use plastic. The current single-use plastic waste management policy in Surabaya is still in the form of a mayor's circular. This study examines the existing condition of plastic waste management in Surabaya and relates it to the national plastic waste management policies. By tracing the flow of plastic waste from its source to ending at the final processing site, we can find out the gaps in which plastic waste is leaked into the environment. The amount of waste that enters the Benowo landfill in 2019 reached 1689 ton/day. Surabaya’s plastic waste leakage is estimated to reach around 94.64 ton/day or 44% of the total solid waste that is mismanaged every day. Solid waste leaked into the environment can be dumped illegally, burned, or even leaked into water bodies. This study discusses what things can be improved from plastic waste management in Indonesia, especially Surabaya. The combination of bottom-up and top-down approaches is considered as one way to accelerate the improvement of plastic waste management in Surabaya. The lessons learned from the city of Surabaya can also be applied in other cities in Indonesia that have a similar profile to Surabaya.
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. 
Co-Authors Surya Surya Yulinah Trihadiningrum