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All Journal Eksergi: Chemical Engineering Journal Jurnal Berkawan
Agustryani, Putri
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Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience Nursing Public Health Social Sciences

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Performance Test of Biogas Production from Tapioca Wastewater: Effect of HRT and Immobilized Media Sanjaya, Andri; Arhab, jabir Shoji; Salsabila, Dwinda; Damayanti, Damayanti; Fahni, Yunita; Deviany, Deviany; Agustryani, Putri; Auriyani, Wika Atro; Saputri, Desi Riana
Eksergi Vol 23 No 1 (2026)
Publisher : Prodi Teknik Kimia UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v23i1.16197

Abstract

Tapioca starch industry wastewater contains high concentrations of organic matter, offering potential for renewable energy generation via biogas production. This study evaluates the effects of hydraulic retention time (HRT) variation and Lampung natural zeolite as an immobilization medium on biogas production in an anaerobic reactor. Two reactor configurations were compared: one with zeolite as the microbial immobilization medium and a control reactor without any immobilization media. Zeolite improved the sCOD degradation efficiency up to 93% compared to the non-immobilized reactor. VFA conversion to methane remained more stable with zeolite, producing up to 520 mL of biogas at a 10-day HRT, with an average biogas yield of 61.97 mL/g dry substrate, much higher than 4.15 mL/g in the non-immobilized reactor. This research confirms the effectiveness of Lampung natural zeolite for enhancing microbial retention, accelerating methanogenesis, and improving overall anaerobic reactor performance. These results have substantial implications for developing efficient, sustainable, and environmentally friendly treatment technologies for tapioca starch wastewater, offering simultaneous solutions for pollution control and renewable energy generation.
PEMANFAATAN TEKNOLOGI GEOFISIKA DAN PENGUATAN LITERASI MASYARAKAT UNTUK PENGELOLAAN AIR TANAH BERKELANJUTAN DI DESA JATIMULYO, KABUPATEN LAMPUNG SELATAN Paembonan, Andri Yadi; Kurnia, Dwi Miftha; Kurniawan , Randy; Louhenapessy, Stevy Canny; Afdi, Rozi; Rusmaladewi, Fitri; Septian, Muhammad Rifqi Dwi; Hasugian, Friska; Agustryani, Putri; Maula, Azman Munthoha
Jurnal Berkawan: Jurnal Pengabdian kepada Masyarakat Vol. 3, No.1, Januari 2026
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

The availability of clean water is a crucial issue in Jatimulyo Village, South Lampung Regency, particularly during the dry season. Residents face difficulties accessing water sources due to a limited understanding of the subsurface groundwater potential. In response to this problem, a team from the Sumatra Institute of Technology (ITERA) conducted a community service activity aimed at mapping this groundwater potential. This activity utilized the geoelectric resistivity method to identify subsurface structures and determine the locations and depths of potential aquifers for drilled wells. In its implementation, the team collaborated with the local village government and involved participants from the Geophysical Engineering and Petroleum and Gas Engineering Study Programs. In addition to technical surveys, the team also conducted a socialization of their findings and provided education on groundwater utilization. This event, attended by residents, local neighborhood (RT) heads, and village officials, highlighted the importance of proper aquifer identification, well maintenance techniques, and strategies for ensuring water resource sustainability. This initiative received positive appreciation from the village head and residents, who hope the results of the ITERA study can provide a concrete solution to address the challenges of clean water availability in their region.
Co-Authors Afdi, Rozi Andri Sanjaya Andri Yadi Paembonan Arhab, Jabir Shoji Auriyani, Wika Atro Damayanti Damayanti Deviany, Deviany Fahni, Yunita Friska Hasugian Kurnia, Dwi Miftha Kurniawan , Randy Maula, Azman Munthoha Rusmaladewi, Fitri Salsabila, Dwinda Saputri, Desi Riana Septian, Muhammad Rifqi Dwi Stevy Canny Louhenapessy