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Estimasi Koefisien Transfer Oksigen (KLa) Pada Metode Aerasi Fine Bubble Diffuser. Studi Kasus : Pengolahan Air Lindi TPA Manggar Kota Balikpapan Muhammad Ma'arij Harfadli; M. Nur Ibnu Luthfi Saud; Indah Chairun Nikmah
JST (Jurnal Sains Terapan) Vol 5, No 2 (2019): JST (Jurnal Sains Terapan)
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat, Politeknik Negeri Balikpapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jst.v5i2.662

Abstract

Leachate is a liquid from the decomposition of waste material in landfills. Leachate can be dangerous if it flows into the ground, consequently making pollution on soil and groundwater. Due to its harmful to the environment, therefore treatment of the leachate is needed. The increase in dissolved oxygen is one of the aerobic treatment processes needed for leachate. In this study, the method of increasing dissolved oxygen (DO) uses a fine bubble diffuser. According to the problem, the purpose of this study is to determine the effect of using a fine bubble diffuser in leachate water treatment by calculating the amount of DO and the oxygen transfer coefficient (KLa) that occurs. In this study, using variations of diameter nozzle diffuser 1.5 mm, 2 mm and 3 mm. The results from this study are the DO concentration to increase based on aeration time. DO concentration with maximum aeration time of 20 minutes at nozzle diameter 1,5 mm, 2 mm, 3 mm, respectively are 1.4 mg/l; 0.7 mg/l; 0.8 mg/l. The results of KLa at nozzle diameter 1.5 mm, 2 mm, 3 mm sequentially are 0.65 / hour; 0.34 / hour; 0.34 / hour. These results indicate that the KLa value decreased. In conclusion, decreased KLa indicates that the oxygen condition in leachate approaches saturated conditions or in other words that the DO concentration is relatively increased with time during aeration.Keywords: Aeration, Dissolved Oxygen, Fine Bubble Diffuser, Oxygen Transfer CoefficientABSTRAKAir lindi merupakan cairan hasil dekomposisi material sampah yang ada di landfill. Air lindi dapat menjadi berbahaya jika meresap ke dalam tanah sehingga menyebabkan pencemaran tanah dan air tanah. Dikarenakan sifatnya yang berbahaya bagi lingkungan maka diperlukan pengolahan terhadap air lindi tersebut. Peningkatan oksigen terlarut merupakan salah satu proses pengolahan aerobik yang diperlukan bagi air lindi. Pada penelitian ini metode peningkatan oksigen terlarut (DO) menggunakan fine bubble diffuser sehingga tujuan dari penelitian ini yaitu mengetahui pengaruh penggunaan fine bubble diffuser dalam pengolahan air lindi dengan menghitung jumlah DO dan koefisien transfer oksigen (KLa) yang terjadi. Dalam penelitian ini menggunakan variasi lubang/nozzle diffuser yaitu 1,5 mm, 2 mm dan 3 mm untuk mengolah air lindi TPA Manggar Kota Balikpapan. Hasil yang didapatkan dari penelitian ini adalah secara keseluruhan konsentrasi DO semakin meningkat berdasarkan waktu aerasi, sementara konsentrasi maksimum DO dengan waktu aerasi 20 menit pada diameter nozzle 1,5 mm adalah 1,4 mg/, diameter nozzle  2 mm adalah 0,7 mg/l dan diameter nozzle 3 mm adalah 0,8 mg/l. Adapun hasil KLa pada 1,5 mm adalah 0,65/jam; 2 mm adalah 0,34/jam; 3 mm 0,34/jam. Hasil tersebut menunjukkan bahwa nilai KLa mengalami penurunan. KLa yang semakin menurun meindikasikan bahwa kondisi oksigen dalam air lindi mendekati kodisi jenuh atau dengan kata lain bahwa konsentrasi DO relatif meningkat terhadap waktu pada saat aerasi.Kata Kunci : Aerasi, Oksigen Terlarut, Fine Bubble Diffuser, Koefisien Transfer Oksigen
SOCIALIZATION OF UNDERSTANDING THE RISKS OF B3 HOUSEHOLD PRODUCTS AND WASTE Mega Ulimaz; Muhammad Ma'arij Harfadli; Nadia Almira Jordan
JCES (Journal of Character Education Society) Vol 4, No 1 (2021): Januari
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jces.v4i1.2904

Abstract

Abstrak: Rencana pengembangan prasarana persampahan di Kecamatan Balikpapan Utara menurut RDTR Kota Balikpapan masih diarahkan pada peningkatan daya tampung sampah skala lingkungan dan tahap pengelolaan akhir. Di antara berbagai jenis sampah permukiman atau domestik, terdapat sampah dan limbah yang mengandung unsur B3 (bahan berbahaya dan beracun). Limbah padat B3 rumah tangga apabila tidak dikelola secara benar berpotensi menimbulkan dampak ya pencemaran lingkungan dan membahayakan kesehatan. Saat ini, masyarakat belum memahami tentang perbedaan sampah B3 dan belum memahami cara/teknik pengelolaan sampah B3 yang benar. Tujuan dari pengabdian masyarakat ini antara lain peningkatan pemahaman masyarakat permukiman terhadap jenis sampah B3 dan pengelolaannya untuk mengurangi pencemaran lingkungan. Diperoleh bahwa tingkat pemahaman Ibu-Ibu RT 54 Kelurahan Karang Joang terhadap 36 jenis produk B3 rumah tangga adalah sekitar 69% saja. Setelah melalui proses sosialisasi, tingkatan pemahaman masyarakat terhadap produk dan limbah B3 rumah tangga yang dihasilkan meningkat menjadi 88,4%. Diketahui pula tingkat resiko tertinggi terdapat pada proses pembuangan sisa produk B3.Abstract: The solid waste infrastructure planning in the North Balikpapan Subdistrict according to the RDTR of Balikpapan is still directed to increase the capacity of waste at the environmental level and the final level. If the household B3 solid waste not managed properly, it can cause environmental pollution and endanger health. The communities do not understand the difference between B3 waste and donot yet understand the proper B3 waste management technique. The objectives of community service include increasing the understanding of settlement communities towards B3 waste types and their management to reduce environmental pollution. It was found that the level of understanding of the RT 54 Karang Joang Women towards 36 types of household B3 products is only 69%. After going through the process of socialization, the level of communities understanding of the products and B3 waste generated by households increased to 88.4%. It is also known that the highest level of risk is found in the process of disposing of the remaining B3 products.
Distribution of Microplastic at Sediment on Balikpapan Coastal Area Marita Wulandari; Asri Prasaningtyas; Muhammad Ma'arij Harfadli; Anggi Melinda Handayani
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 18, No 1 (2021): March 2021
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1386.329 KB) | DOI: 10.14710/presipitasi.v18i1.153-160

Abstract

Coastal areas are often in the spotlight related to environmental problems, such as plastic waste. Coastal and coastal areas often face complex problems related to plastic waste, including microplastics. Microplastics (MPs) are tiny pieces of plastic that are as small as ≤ 5 mm and possibly pollute the environment. The study aimed to identify the presence and abundance of microplastics contaminating the coastal areas of Balikpapan City. Sediment samples were taken at a depth 0-10 cm. The observations were carried out in several stages; those stages are the drying stage, volume reduction, density separation, and counting using a microscope. The microplastic observation results with the microscope showed four types: fragment-shaped microplastics, phylum-shaped microplastics, fiber microplastics, and microbead-shaped microplastics. The highest number of microplastic particles was found at the Kampung Atas Air point, about 201 particles / 100 grams of dry sediment and the least number of microplastic particles were found at the Monpera point, about 16 particles / 100 grams of dry sediment. Microplastics with fiber form dominated all the study areas. Environmental conditions and pollutant sources influence the difference in the number of microplastics
Performance of Rapid Sand Filter Dual Media for Microplastic Removal in the Water: The Effect of Microplastic Size and Effective Size of Filter Media Marita Wulandari; Kevin Marpaung; Asri Prasaningtyas; Rahmi Yorika; Muhammad Ma'arij Harfadli; Ainun Zulfikar
Journal of Community Based Environmental Engineering and Management Vol. 8 No. 1 (2024): March 2024
Publisher : Department of Environmental Engineering - Universitas Pasundan - Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jcbeem.v8i1.12502

Abstract

Microplastics (MPs) significantly damage the environment and human health, leading to a growing global concern. MPs have been detected not only in the natural environment but also in the drinking water treatment process. One of the configurations of the drinking water treatment unit is filtration. Only a few research studies have been published on microplastic removal in the water system. This study was conducted to determine the performance of a rapid sand filter (RSF) in removing microplastics in water with a variation in the effective size (ES) of silica sand and microplastic size. In this study, microplastics are artificially made with size variations of < 400 μm and >400 μm. The filtering uses two variations in the adequate size (ES) of silica sand, namely 0.4 mm and 0.7 mm. At the same time, anthracite is only a control variable with ES = 0.69 with a flow speed of 4 m / h and an observation time of 30, 60, 90, and 120 minutes. The results show that the filter media ES 0.4 has the highest efficiency values of 91.30% for the microplastic size MPs <400 µm and 95.80 % for the larger microplastic >400 µm. In addition, the average percentage removal of ES 0.7 mm was 77.24 % for the size of MPs <400 µm and 95.77% for the size of Mps >400 µm. Gaining insight into the mechanisms involved in removing microplastics from drinking water is essential for developing more effective techniques for eliminating them.