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Pengaruh Variasi Ukuran Tongkol Jagung dan Suhu Distilasi Terhadap Karakteristik Asap Cair Meiyer Marthen Kinda; Terecia Deswita Cristanti Sirait; Dedy Anwar; Ellyas Alga Nainggolan; Andrew Rolas Siagian
Paulus Chem Engineering Journal Vol 5 No 1 (2025): Vol.5 No.1 Agustus 2025 Paulus Chem Engineering Journal
Publisher : Prodi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63365/srj14630

Abstract

Jagung adalah satu diantara komoditas utama yang banyak dibudidayakan di Kabupaten Toba.  Produksi jagung yang tinggi menghasilkan limbah tongkol jagung yang dapat mencemari lingkungan. Penelitian ini bertujuan untuk mengoptimalkan pemanfaatan tongkol jagung menjadi asap cair melalui proses pirolisis, serta menganalisis pengaruh ukuran tongkol jagung (5, 10, dan 15 cm) dan suhu distilasi (100oC, 125oC, dan 150oC) terhadap karakteristik asap cair. Analisis meliputi warna, pH, kandungan asam asetat, fenol, bobot jenis, dan bahan terapung, serta kesesuaian hasil dengan Standar Nasional Indonesia (SNI) 8985-2021. Proses ini memanfaatkan kandungan tongkol jagung seperti selulosa (41%), hemiselulosa (36%), dan lignin (6%) yang dapat didegradasi secara termal menghasilkan asam asetat, fenol dan senyawa lainnya dan berfungsi sebagai antibakteri dan antioksidan. Hasil penelitian menunjukkan bahwa asap cair memiliki pH <3, asam asetat tertinggi (3%) pada ukuran 5 cm dan suhu 100oC, serta kandungan fenol yang rendah (0,000829-0,004937). Semua variasi tidak mengandung bahan terapung dan bobot jenis berkisar antara 1,0097-1,0159. Hasil ini mengindikasikan bahwa asap cair yang dihasilkan memenuhi standar SNI dan dapat menjadikannya sebagai solusi potensial untuk pengelolaan limbah jagung yang ramah lingkungan.
Granulated Biochar–MMT–Zn/Al LDH Composite as a Durable Adsorbent for Column Applications Fadhilah, Rahmat; Enjelika, Destria; Anwar, Dedy; Sudibyo, Sudibyo; Rinovian, Asnan; Safitri, Hana; Fujianti, Lia Nurbanillah; Devitriano, Dodi; Syarifuddin, Hutwan; Maryani, Anis Tatik; Wibowo, Yudha Gusti
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Article in Press 2026 (For Upcoming Issue)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v0i0.%p

Abstract

Granular adsorbents are essential for fixed-bed column systems because they reduce the pressure drop and minimize the material loss commonly associated with powdered adsorbents. However, transforming powdered materials into mechanically stable granules without compromising their structural integrity remains a significant challenge. In this study, a granulated composite consisting of biochar, montmorillonite (MMT), and Zn/Al layered double hydroxide (LDH) was developed as a potential adsorbent for column application. Biochar derived from Avicennia marina biomass was combined with MMT and Zn/Al LDH to produce a composite material, which was subsequently granulated using bentonite, tapioca starch, and polyvinyl alcohol (PVA) as binding agents. The resulting granules (0.5–1.5 cm in diameter) were evaluated for mechanical durability under static water immersion and dynamic water flow conditions. The results indicate that the binder composition strongly influences granule stability. Granules prepared without PVA rapidly disintegrated in aqueous environments, whereas the inclusion of PVA significantly improved structural durability. The optimized formulation exhibited durability of up to 8208 min under static conditions and maintained its structural integrity under continuous water flow. These results demonstrate the potential of Biochar–MMT–Zn/Al LDH granules as durable adsorbents for fixed-bed column water treatment systems
A Comprehensive Framework for Drainage, Dewatering and Treatment Technologies in Acid Mine Drainage Control Jarwinda, Jarwinda; Andrew, Andrew; Rivaldi, Tio; Al Hijri, M. Khalid; Ernando, Rully; Hakim, Hafidzul; Zein, Alfath; Lestari, Leta; Lestari, Divia; Nainggolan, Ellyas Alga; Anwar, Dedy
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Article in Press 2026 (For Upcoming Issue)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v0i0.%p

Abstract

Acid mine drainage (AMD) represents a long-term environmental challenge originating from the oxidation of sulfide minerals and mobilization of dissolved metals into surrounding water systems. This study developed a comprehensive framework for AMD control that integrates drainage prevention strategies, hydraulic engineering, active and passive treatment technologies, monitoring systems, and sustainability principles into a unified approach. The framework synthesizes advances in geochemical mine planning, diversion and dewatering systems, hybrid chemical–biological treatment processes, and emerging technologies, including microbial electrochemical systems, selective metal recovery, and digital twins. A life cycle assessment was applied to evaluate environmental and economic trade-offs, emphasizing the potential for circular economy strategies that convert AMD byproducts into valuable resources. This review highlights the importance of adaptive management supported by real-time monitoring, stakeholder involvement, and robust regulatory structures. By connecting technological innovation with policy and ecological restoration objectives, the proposed framework supports resilient AMD control over the entire mine lifecycle and contributes to sustainable post-closure water management.
Co-Authors Al Hijri, M. Khalid Andrew Andrew, Andrew Andrew Rolas Siagian Anis Tatik Maryani Arif Rohman Bambang Trisakti Basril Amirza Harahap Dodi Devitriano Ellyas Alga Nainggolan Enjelika, Destria Ernando, Rully Fadhilah, Rahmat Fitri, Li Idi'il Fristyana Sosanty Lubis, Irvan Fujianti, Lia Nurbanillah Goeroe Simatupang Gusniwati , Hakim, Hafidzul Hutwan Syarifuddin Jarwinda, Jarwinda Jasminarni Juli Yanti Damanik Karo-Karo, Justaman Arifin KINDA, MEIYER MARTHEN Lestari, Divia Lestari, Leta MEIYER MARTHEN KINDA Mirnandaulia, Meutia Mustakim Mustakim Nainggolan, Ellyas Alga Neliyati, Neliyati Pahotan D.P. Silaen Panjaitan, Pestahariati Purba, Darry Christine Silowaty Rinovian, Asnan Rivaldi, Tio Safitri, Hana Sari Muthia Silalahi Silalahi, Meriahni Simanjuntak, Evy Enjelina Sitepu, Ivana Situmorang, Ester Rina Sudibyo Sudibyo Tarigan, Enda Rasilta Terecia Deswita Cristanti Sirait Wibowo, Yudha Gusti Zein, Alfath Zuqni Meldha