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All Journal Jurnal Sains & Teknologi Lingkungan Open Science and Technology
Dewi Wulandari, S.Hut., M.Agr., Ph.D
Department Of Environmental Engineering, Universitas Islam Indonesia, Yogyakarta
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Environmental Science Mechanical Engineering

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Penurunan Kandungan Hidrokarbon Menggunakan Constructed Wetland Reactor Dalam Mengolah Limbah Minyak: Removal of Hidrocarbon Compounds Using Constructed Wetland Reactor to Treat Oily Wastewater Joni Aldilla Fajri; Dewi Wulandari; Awaluddin Nurmiyanto; Aster Rahayu
Open Science and Technology Vol. 1 No. 2 (2021): Open Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/ost.vol1no2.2021.36

Abstract

Limbah minyak dari kegiatan perbengkalan otomotif umumnya dibuang langsung ke drainase sebelum masuk ke dalam badan air terdekat. Limbah minyak mengandung senyawa aromatik, hidrokarbon, logam dan lainnya yang sangat berpotensi merusak lingkungan. Low cost wastewater treatment seperti wetland memiliki efektifitas yang cukup baik untuk mengolah air limbah domestik dan air limbah spesifik. Oleh karena itu, tujuan penelitian ini adalah mengevaluasi kinerja reaktor kontinu wetland kombinasi dengan indigen bakteria dalam mereduksi zat pencemar limbah minyak. Konsorsium indigen bakteri ditambahkan ke dalam reaktor wetland (105 cm x 30 cm x 30 cm) yang terdiri dari kompartement Vertical floating wetland dan constructed wetland dan dioperasikan kontinu selama 30 hari dengan waktu tinggal total 15 hari. Hasilnya menunjukkan bahwa reaktor ini mampu menurunkan konsentrasi minyak-lemak 73-98%, Total Petroleum Hidorkarbon  77-99%, kandungan minyak 67-94%, dan juga minyak dan lemak 49 – 98%. Sehingga dapat disimpulkan, reactor continuous vertical flow wetlands kombinasi dengan indigen bakteri dan tanaman Vetiveria z mampu menurunkan kadar minyak-lemak, dan TPH. Oil and grease wastewater produced by the automotive workshop mainly introduces to the drainage without any prior treatment. Oily wastewater consists of aromatic compound, hydrocarbon, metal, and other contaminates that had major impairments into the environment. Low cost wastewater treatment e.q: wetland has satisfied performance to treat domestic wastewater and industrial wastewater. Therefore, the purpose of this study is to analyze the performance of continue wetland reactor combined with consortium indigenous bacteria to treat oily wastewater. Consortium indigenous bacteria were added to the three compartments in the reactor (105 cm x 30 cm x 30 cm); vertical floating wetland and constructed wetland, and it was operated for 30 days with the hydraulic residence time (HRT) for 15 days. As results, this reactor could reduce the concentration of oil-grease, total petroleum hydrocarbon (TPH), oil content, and oil grease (OG) at the level of 73-98%, 77-99%, and 49 – 98%, respectively. This result indicates that combination of consortium indigenous bacteria enhances the effectivity of reactor continuous vertical flow wetlands in degrading the oil-grease contaminants.
SCREENING OF PHOSPHATE SOLUBILIZING MICROORGANISMS COLLECTED FROM POST TIN MINING: POTENCY FOR FUTURE MINING REHABILITATION Dewi Wulandari, S.Hut., M.Agr., Ph.D; Risa Rosita; Ahdiar Fikri Maulana
Jurnal Sains & Teknologi Lingkungan Vol. 15 No. 1 (2023): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

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Abstract

Tin mining produced massive tailings which dispersed across the land in the post-tin mining area, transforming the landscape into a hilly or basin landscape. The dominated white silica sand in this area is prone to erosion from water and wind, resulting in soil nutrition deficiency, meanwhile, heavy metal levels were found to be elevated. This condition makes it difficult for organisms to live in such a degraded post-tin mining area. Phosphate solubilizing microorganisms (PSM) contribute to phosphate availability by dissolving both fertilizers and bounded P in soil. This study aimed to select indigenous PSM collected from post-tin mining areas. Zea mays spp., the tested plant, was grown in sterilized sand to avoid the possible nutrient content, particularly phosphate, in the soil. Rock phosphate Granufos (containing 20% P2O5) was applied in sterilized sand (v: v= 1:100) as the source of limited and insoluble P. The 17 indigenous PSM were tested by inoculating them into Zea mays spp. growing in sterilized sand. Non-inoculated Zea mays spp. were prepared as well as control. Inoculation of 17 indigenous PSM significantly had higher soil available phosphor in comparison to control. Two PSM of P7 and P15 significantly had higher shoot concentrations among treatments. The isolate of P5 had the highest shoot dry weight among treatments. Overall, all PSM inoculations improved growth performance due to increased soil available P and improved shoot P uptake. These findings suggest that indigenous PSM potentially fills nutrient deficiencies, particularly P as a macronutrient needed to rehabilitate degraded post-tin mining areas.
Co-Authors Awaluddin Nurmiyanto, Awaluddin Bambang Hermawan Nugroho Bambang Hermawan Nugroho Beta Barasila Nirma Hadilis Ines Widyarani Joni Aldilla Fajri Maulana, Ahdiar Fikri Rahayu, Aster Risa Rosita Sintaresmi Kusuma Wardani Tri Senja Aprilia