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All Journal JUSTER: Jurnal Sains dan Terapan Journal Serambi Engineering (JSE) Biodiversitas Journal of Biological Diversity
Regina Mardatillah
Universitas Andalas
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Physics

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Analisis Data Perencanaan untuk Sistem Pengolahan Sampah Kampus Universitas Andalas Limau Manis Padang Yenni Ruslinda; Nilda Tri Putr; Regina Mardatillah; Febri Kurnia Mulya
Jurnal Serambi Engineering Vol. 9 No. 1 (2024): Januari 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The waste processing performance at the Integrated Waste Processing Center of Andalas University has experienced a decline; therefore, an evaluation and development of the waste processing system are needed. This research aims to analyze planning data for the waste processing system, including waste generation analysis, composition, recycling potential, and waste characteristics. Waste samples were taken from 48 campus facilities representing office activities, academic activities, student activities, and other activities. Waste generation, composition, and recycling potential analyses were conducted in the field using gravimetric methods, while characteristic analyses were performed in the laboratory.From the research results, planning data for the campus waste generation unit was obtained at 0.0592 kg/person/hour or 0.00163 kg/m²/hour, and in volume units, it was 0.5245 liters/person/hour or 0.02945 liters/m²/hour. The waste composition consisted of 49.61% easily decomposable waste, 38.22% recyclable waste, 1% hazardous waste (B3), and 16.21% residual waste. The potentially recyclable waste includes food waste, yard/wood waste, plastic, paper, glass, and metal, with an average potential of 89%. Waste characteristics include a specific gravity of 0.058, moisture content of 22.18%, volatile matter content of 59.95%, fixed carbon content of 12.09%, ash content of 5.79%, C/N ratio of 30.28, biodegradability of 54.06%, and a fly population of 2 flies/m².Campus waste has the potential to be processed through composting, Black Soldier Fly (BSF) bioconver sionand biodrying for easily decomposable waste, and it can be sold to the informal sector for recycling.
Perancangan Sistem Upflow Filter Septic Tank Untuk Pengolahan Air Limbah Domestik Kampus Regina Mardatillah
JUSTER : Jurnal Sains dan Terapan Vol. 4 No. 2 (2025): JUSTER: Jurnal Sains dan Terapan
Publisher : Jompa Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57218/juster.v4i2.1824

Abstract

Perguruan tinggi sebagai pusat aktivitas akademik dengan populasi padat penghuni menghasilkan volume air limbah domestik yang signifikan. Limbah cair dari kantin, laboratorium, asrama, dan fasilitas kampus lainnya berpotensi mencemari lingkungan jika tidak dikelola secara optimal.  Penelitian ini merancang sistem pengolahan air limbah domestik di Kampus X Padang menggunakan teknologi upflow filter septic tank. Perancangan sistem dilakukan mengacu kepada SNI 2398:2017. Sistem yang dirancang mampu mengolah debit total air limbah sebesar 26,45 m3/hari yang terdiri dari 70% greywater dan 30% blackwater. Unit pengolahan utama meliputi grease trap berkapasitas 0,0162 m³ dengan efisiensi penyisihan minyak dan lemak mencapai 95%, tangki septik berukuran 23,637 m³ dengan waktu tinggal 3 hari, serta upflow filter seluas 8,82 m².  Sistem ini mampu menyisihkan parameter pencemar mencapai: BOD 55,8%, COD 58,6%, TSS 87,8%, amonia 75,1%, dan total coliform hingga 100%. Selanjutnya, unit pengolahan disinfeksi dengan kaporit 65% (0,326 kg/hari), dapat menghilangkan total coliform hingga nol. Implementasi sistem ini diharapkan dapat menjadi solusi berkelanjutan untuk pengelolaan air limbah di perguruan tinggi.
Phytoplankton community response to seasonal eutrophication in Maninjau Lake, West Sumatra, Indonesia PUTI SRI KOMALA; TRI RETNANINGSIH SOEPROBOWATI; NOVERITA DIAN TAKARINA; LUKI SUBEHI; MARTA WOJEWODKA‑PRZYBYL; BUDHI PRIMASARI; TIVANY EDWIN; LIA ARLINA; REGINA MARDATILLAH
Biodiversitas Journal of Biological Diversity Vol. 27 No. 2 (2026)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d270232

Abstract

Abstract. Komala PS, Soeprobowati TR, Takarina ND, Subehi L, Wojewodka‑Przybyl M, Primasari B, Edwin T, Arlina L, Mardatillah R. 2026. Phytoplankton community response to seasonal eutrophication in Maninjau Lake, West Sumatra, Indonesia. Biodiversitas 27 (2): d270232. https://doi.org/10.13057/biodiv/d270232. The aim of this study is to analyze the seasonal trophic status of Maninjau Lake using the Comprehensive Trophic Status Index (CTSI) and to examine its spatial and temporal relationship with the phytoplankton community structure. The water and phytoplankton samples were collected from 10 sampling points in accordance with SNI 6989-57-2008 and the ecological protocol. Results show that CTSI values ranged from 62.59 to 73.28, indicating eutrophic to hypereutrophic conditions. The trophic sub-indices showed TSI-TP values of 53.24-82.20, TSI-TN values of 50.97-61.49, and TSI-Chl-a values of 52.98-62.07. Based on spatial analysis, the trophic status is relatively homogeneous across all sampling locations, indicating widespread nutrient loading in the lake. On the other hand, higher CTSI values during the rainy season and temporal variation of CTSI are significant. The increase in CTSI was associated with a change in phytoplankton dominance from Bacillariophyceae under eutrophic conditions to Cyanophyceae under hypereutrophic conditions, reflecting tolerance to increased nutrient concentrations. The hypereutrophic status of Maninjau Lake favored opportunistic taxa, as indicated by an increase in the dominance index and decreases in diversity and evenness. Rainfall contributes to shaping phytoplankton community dynamics, affecting the trophic status of the lake. This study highlights that integrating CTSI, phytoplankton ecological indices, and rainfall variability provides a useful framework for assessing air quality degradation and ecosystem stability in tropical lakes.
Co-Authors Febri Kurnia Mulya LIA ARLINA LUKI SUBEHI MARTA WOJEWODKA‑PRZYBYL Nilda Tri Putr Noverita Dian Takarina Primasari, Budhi Puti Sri Komala Tivany Edwin TRI RETNANINGSIH SOEPROBOWATI Yenni Ruslinda