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All Journal Journal of Applied Materials and Technology BATOBO: Jurnal Pengabdian Kepada Masyarakat Jurnal Sains Materi Indonesia
Muhdarina
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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Metal-Free Activated Carbon Catalytic for Degradation of Organic Contaminants by Peroxydisulfate Activation Prawiranegara, Barata Aditya; Setia Utama, Panca; Amri, Amun; Nurhayati; Muhdarina; Awaluddin, Amir; Saputra, Edy
Journal of Applied Materials and Technology Vol. 5 No. 1 (2023): September 2023
Publisher : Faculty of Engineering Universitas Riau and Applied Materials and Technology Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/Jamt.5.1.20-26

Abstract

Green chemistry has become trending recently, and the discovery of environmentally friendly catalysts is mandatory. Activated carbons (ACs) are one of the most environmentally friendly yet cheap materials that have the potential for catalyst application. Three commercially available ACs from Pancasari, Norit, and Chemical Supply were used as metal-free catalysts for advanced oxidation process (AOP) phenol removal in water in the presence of oxidants peroxydisulfate (PDS), and hydrogen peroxide (H2O2). It was found that ACs were effective to be used as catalysts for activating those oxidants to oxidize phenol in AOP reactions. In this study, the surface area of the catalyst significantly improved the phenol removal efficiency. ACs Pancasari (ACP) with the highest surface area has the best degradation performance of phenol removal with up to 99% removal efficiency in 60 minutes under the condition of [phenol] = 30 mg L-1, [ACP] = 0.2 g L-1, [PDS] = 3.3 mmol L-1, and T = 25oC. it was also found that the degradation process was significantly influenced by reaction temperature. Nevertheless, in this study, ACs display the potential as catalysts in the AOP process for wastewater treatments.
Penyuluhan Teknologi Konversi Biomassa Menjadi Biofuel dan Bioenergi di SMU Negeri 1 Pasir Pangaraian Bahri, Syaiful; Dani Ali, Nurhalim; Muhdarina; Ermiyati
BATOBO: Jurnal Pengabdian Kepada Masyarakat Vol 2 No 1: BATOBO: Juni 2024
Publisher : Jurusan Teknik Elektro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/batobo.2.1.1-8

Abstract

Masalah energi telah menjadi isu global dalam tiga dekade terakhir. Masyarakat dunia sangat kuatir dengan peningkatan kebutuhan energi terutama fosil, namun cadangannya semakin menipis. Konstribusi sumber energi fosil tidak dapat diharapkan lagi dalam memenuhi kebutuhan energi dunia dalam jangka panjang. Ketergantungan terhadap sumber energi fosil harus dicarikan penggantinya dengan memanfaatkan sumber energi lain. Permasalahan dibidang energi tidak hanya menyangkut sumber energinya saja, namun teknologi pengolahan sumber energi juga sangat memerlukan invensi dan inovasi teknologi. Masyarakat harus mendapatkan edukasi yang cukup dalam menghadapi krisis energi ini dalam berbagai bentuk penyuluhan dan pelatihan. Materi penyuluhan mencakup bagaimana proses biomassa menjadi bioenergi dan biofuel. Biomassa yang sudah tidak berguna dapat diolah menjadi energi agar bermanfaat bagi kehidupan. Penyuluhan ini menyampaikan permasalahan energi dan teknologi energi di masa depan. Penyuluhan ini disampaikan kepada generasi muda yang masih usia sekolah karena ditangan merekalah digantungkan harapan untuk mengatasi krisis energi di masa yang akan datang. Siswa-siswi SMUN 1 Pasir Pangaraian sangat antusias mengikuti penyuluhan teknologi konversi energi ini. Harapannya setelah mendapatkan penyuluhan ini, peserta menjadi manusia yang sadar energi sehingga mereka mampu berhemat energi dan mampu memecahkan permasalahan energi sesuai dengan usia mereka.
Enhanced Co₂ Adsorption Using Activated Carbon From Tea Stem Waste Via Activation–Carbonization Strategy Supriadi, Edi; Efriyana Kampai; Muhdarina; Joni Prasetyo; Yessie Widya Sari; Tanti Ardiyati; Ary Mauliva Hada Putri
Jurnal Sains Materi Indonesia Vol. 27 No. 2 (2026): Jurnal Sains Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2026.12227

Abstract

Tea stem agroindustrial waste, rich in cellulose, hemicellulose, and lignin, presents a promising low-cost precursor for sustainable activated carbon production. This study explores the activation–carbonization approach for synthesizing porous activated carbon and evaluates its effectiveness for CO₂ capture. Chemical activation was conducted using 60% w/v KOH at different activator-to-precursor ratios (0.5:1, 1:1, and 2:1 v/w), followed by carbonization at 250°C, 350°C, and 450°C in a fixed-bed pyrolysis reactor under nitrogen atmosphere. Among all samples, A1-450 0.5 (450°C, 0.5:1 ratio) exhibited the highest CO2 adsorption capacity (1.9500 mmol g⁻¹), attributed to its high surface area (679.4 m² g⁻¹) and predominantly microporous structure. XRD analysis confirmed the presence of disordered graphitic domains with broad peaks at 2θ = 22° and 44°, while FTIR revealed abundant surface functional groups (OH, C=C, CO) essential for CO2 interactions. SEM-EDX characterization showed a heterogeneous porous surface and high carbon content (78.23%). These findings demonstrate that the activation–carbonization route is more effective than carbonization–activation in producing high-performance bio-based CO₂ adsorbents, offering a viable strategy for valorizing agro-waste into functional carbon materials
Co-Authors Amir Awaluddin Amun Amri Ary Mauliva Hada Putri Dani Ali, Nurhalim Efriyana Kampai Ermiyati Joni Prasetyo Nurhayati Nurwijayanti Prawiranegara, Barata Aditya Setia Utama, Panca Supriadi, Edi SYAIFUL BAHRI Tanti Ardiyati Yessie Widya Sari