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All Journal TEKNIK Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Waste Handling and Environmental Monitoring
Moh. Djaeni
Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro Jln. Prof. Soedarto, Tembalang, Semarang, 50239, Telp/Fax: (024)7460058
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering

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The Role of Algae in Biofuel Production: Potentials and Challenges for Sustainable Transportation Sari, Dessy Agustina; Djaeni, Moh.; Hadiyanto, Hadiyanto; Prasetyaningrum, Aji
TEKNIK Vol 46, No 1 (2025) January 2025
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/teknik.v46i1.67532

Abstract

This study aims to explore the potential of algae for sustainable biofuel production by examining their molecular biology and the use of advanced cultivation techniques. As concerns over greenhouse gas emissions and rising transportation energy costs grow, algae offer a promising alternative for fuel derived from both food and non-food sources. This review looks at the main biological pathways involved in making biofuels from algae. It focuses on species diversity, lipid content, and new technologies like photobioreactors and magnetic nanoparticle harvesting. The results showcase noteworthy advancements in biotechnology and genetic engineering that boost algae productivity and fuel yield, while also critically examining the environmental impacts such as CO2 emissions and water use, as well as the economic and policy challenges through a life cycle analysis. Adopting a global perspective, this review emphasizes the role of international collaboration and technology transfer in overcoming barriers. Conclusion: Algae-based biofuels hold considerable potential for reducing CO2 and supporting sustainable transportation, yet scaling up production and lowering costs remain challenges. Future research should focus on improving integrated biorefinery platforms, exploring CO2 capture, and promoting international partnerships.
Integrated EM4-based anaerobic and aerobic wastewater treatment for sustainable tofu industry effluent management Marsyea, Rihlah Fahiranti; Oktiawan, Wiharyanto; Djaeni, Moh.
Waste Handling and Environmental Monitoring Vol. 2 No. 1: (February) 2025
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/whem.v2i1.2025.1851

Abstract

Background: The Tahu Sehat Sari industrial area in Cokro Village is one of the largest tofu manufacturers, processing 3 tons of soybeans daily with 88 employees. However, wastewater quality tests reveal that the effluent exceeds regulatory limits set by Central Java Regional Regulation No. 5 of 2012, with BOD at 422.5 mg/L, COD at 845 mg/L, and TSS at 1940 mg/L. Effective wastewater treatment is necessary to ensure compliance with environmental standards and minimize pollution. Methods: This study evaluates wastewater treatment alternatives, including Anaerobic Digester, Anaerobic Biofilter, and Aerobic Biofilter, with the addition of Effective Microorganisms 4 (EM4) to enhance organic waste degradation. Wastewater samples were tested for COD, BOD, and TSS levels before and after treatment to assess removal efficiency. Findings: The implementation of EM4 significantly improved wastewater quality, achieving an 86% reduction in COD with a 0.3% EM4 concentration in aerobic treatment. EM4’s fermentation bacteria effectively minimized organic contaminants. The selected treatment methods—Anaerobic Digester, Anaerobic Biofilter, and Aerobic Biofilter—proved suitable for treating tofu wastewater, with final effluent concentrations of COD at 2.4 mg/L, BOD at 0.3 mg/L, and TSS at 35 mg/L, meeting regulatory standards. The estimated cost for the construction of a Wastewater Treatment Plant (WWTP) is IDR 1,177,378,400, with monthly operation and maintenance expenses of IDR 6,110,297. Conclusion: The study confirms that an integrated wastewater treatment system using anaerobic and aerobic biofilters combined with EM4 is effective in reducing organic waste contamination in tofu industry effluent. Further assessment of land use and distribution systems is recommended to optimize wastewater management. Novelty/Originality of this article: This research contributes to sustainable wastewater treatment in tofu production by integrating EM4 technology with anaerobic and aerobic filtration, achieving high pollutant removal efficiency. The study also provides a financial analysis of WWTP implementation, highlighting its feasibility for similar small and medium enterprises.
PEMBERDAYAAN MASYARAKAT DESA DALEMAN BERBASIS EDUKASI 3R DAN REVITALISASI UMBUL NILO DI KLATEN–JAWA TENGAH Heidija, Anne Marie; Dzakwan, Muhammad Aufa; Kartika, Fira Candra; Djaeni, Moh.; Santosa, Ari Wibawa Budi
Jurnal Pasopati Vol 7, No 2 (2025): Vol 7, No 2 (2025)
Publisher : Fakultas Teknik Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/pasopati.2025.29153

Abstract

Desa Daleman di Kabupaten Klaten dikenal sebagai sentra industri rumahan soun sekaligus lokasi wisata alam Umbul Nilo, sebuah pemandian alami yang memiliki potensi besar sebagai destinasi unggulan daerah. Namun, rendahnya kesadaran masyarakat terhadap pengelolaan sampah, baik dari aktivitas industri maupun pariwisata, berdampak pada kebersihan lingkungan dan keberlanjutan kawasan wisata. Melalui program Kuliah Kerja Nyata (KKN) Tematik, tim mahasiswa Universitas Diponegoro melaksanakan kegiatan pengabdian masyarakat yang difokuskan pada edukasi prinsip 3R (Reduce, Reuse, Recycle) serta revitalisasi kawasan wisata Umbul Nilo. Program ini meliputi kegiatan penyuluhan, pelatihan pemilahan sampah, pemanfaatan limbah soun menjadi produk bernilai tambah, hingga penataan ulang area wisata agar lebih bersih, aman, dan nyaman bagi pengunjung. Selain itu, mahasiswa juga melakukan pembuatan media edukatif berupa leaflet, poster, dan booklet yang disebarkan kepada masyarakat serta sosialisasi pengelolaan sampah berbasis komunitas. Hasil kegiatan menunjukkan adanya peningkatan pemahaman, kesadaran, dan partisipasi aktif masyarakat dalam menjaga kebersihan lingkungan, serta lahirnya inisiatif lokal untuk mengelola sampah secara lebih mandiri. Edukasi 3R dan upaya revitalisasi terbukti menjadi strategi efektif dalam mewujudkan Desa Daleman sebagai kawasan wisata dan industri soun yang berwawasan lingkungan, berkelanjutan, serta mampu meningkatkan citra desa di tingkat regional. Kata kunci: pengabdian masyarakat, 3R, revitalisasi wisata, edukasi lingkungan, limbah soun, desa Daleman
Co-Authors Aji Prasetyaningrum Ari Wibawa Budi Santosa Dessy Agustina Sari Dzakwan, Muhammad Aufa Hadiyanto Hadiyanto Heidija, Anne Marie Kartika, Fira Candra Marsyea, Rihlah Fahiranti Wiharyanto Oktiawan