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All Journal Prosiding (SIAR) Seminar Ilmiah Arsitektur Journal of Engineering and Technological Sciences
Mohamad Muqoffa
Department of Architecture, Sebelas Maret University, Surakarta
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering

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Enhancing Biogas Production through the Co-Digestion of Indigofera and Cow Manure for Electricity Generation Suyitno, Suyitno; Juwana, Wibawa Endra; Muqoffa, Mohamad
Journal of Engineering and Technological Sciences Vol. 57 No. 3 (2025): Vol. 57 No. 3 (2025): June
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2025.57.3.1

Abstract

The research examines the augmentation of biogas generation through the co-digestion of Indigofera tinctoria waste and cow manure, emphasising the optimization of parameters for enhanced efficiency. Anaerobic digestion presents potential for sustainable waste management and renewable energy generation. The initial discussion underscores the significance of Indigofera tinctoria, alongside challenges in managing agricultural and organic waste. The methodology encompasses substrate preparation, reactor design, and biogas utilization for electricity generation. Results indicate that substrate feeding rates and pH levels significantly influence biogas production, with optimal efficiency observed when pH is maintained between 6 and 7. Feeding rates are identified as a critical factor, highlighting the necessity for precise optimization. Additionally, managing hydrogen sulfide content is vital to mitigate corrosion risks, which can be addressed through adjustments to substrate composition. An interaction analysis between substrate feeding rates and pH revealed no significant combined effects, emphasizing the importance of understanding individual parameter dynamics to maximize production efficiency. Optimal load conditions were identified, with diminishing returns observed beyond a specific threshold. This study provides valuable insights into improving biogas production efficiency from Indigofera tinctoria waste and cow manure. Key recommendations include the optimization of substrate composition and stringent pH regulation to promote sustainable biogas production practices. Future research is encouraged to further refine biogas technology and advance its application in renewable energy systems.
Hierarki Gerbang pada Bangunan Cina di Lasem Wijayanti, Ratna; Muqoffa, Mohamad; Marlina, Avi
Prosiding (SIAR) Seminar Ilmiah Arsitektur 2020: Prosiding (SIAR) Seminar Ilmiah Arsitektur
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Rumah tinggal didesain sedemikian rupa sehingga menjadi simbol jati diri dari pemilik rumah. Dalam simbolisasi bangunan suatu masyarakat tradisional, elemen-elemen bangunan memiliki makna khusus yang diakui sebagai elemen penting untuk kekuatan dan stabilitas bangunan. Orang Cina memiliki perhatian khusus dalam mendesain gerbang sebagai simbolisasi status sosialnya. Perbedaan status sosial tersebut diwujudkan dengan perbedaan gaya gerbang, ukuran, bentuk atap, warna, material dan ornamen yang terdapat pada gerbang. Penelitian ini menggunakan metode kualitatif deskriptif untuk mengetahui hierarki dari gerbang Cina yang berada di Lasem. Hasil dari penelitian ini menunjukkan bahwa hierarki gerbang pada bangunan Cina di Lasem memiliki tingkatan tertentu disetiap bangunan, dengan ditemukannya rumah gerbang untuk strata sosial dan financial yang lebih tinggi, sedangkan gerbang Ruyi untuk strata sosial yang lebih rendah.
Co-Authors Ana Hardiana, Ana Darmarani, Chiquita Farah, Nabila Hanif Marlina, Avi Papin Longaun Rosy, Papin Longaun Rachmadi Nugroho, Rachmadi Radityo Aryanto, Radityo RATNA WIJAYANTI Samsudi . Suyitno Suyitno Ummul Mustaqimah, Ummul Wibawa Endra Juwana, Wibawa Endra