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Comparison Between Chlorella vulgaris And Spirulina platensis in Oxidation Ditch Algae Reactor for Treating Tofu Wastewater Savira Safrilia; Lolita Kurniasari; Euis Nurul Hidayah; Okik Hendriyanto Cahyonugroho; Aulia Ulfah Farahdiba
Nusantara Science and Technology Proceedings 5th International Seminar of Research Month 2020
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2021.0907

Wastewater has been giving a high contribution to the quality of water bodies. Tofu wastewater is one of the contributors since it might contain high organic loading. Microalgae is one of the promising solutions to improve wastewater treatment, especially organic wastewater. However, every microalga has its specific properties and it will affect the quality of treated wastewater. This study aims to compare Chlorella vulgaris and Spirulina platensis in an oxidation ditch algae reactor (ODAR) for treating tofu wastewater. The ODAR system was set up under ratio wastewater and microalgae 1:1, the sample was taken every day for 7 days of observation. The sample was analyzed for BOD, DO, and Chlorophyll-a. The results showed that Spirulina platensis has a higher performance in removing organic pollutants than Chlorella vulgaris, which is shown 60% BOD removal, higher DO concentration (5-8 mg/L), and 2,67 mg/L of Chlorophyll-a. Performance of Spirulina plantesis in treating organic wastewater was indicated as a fast-growing microalga than Chlorella vulgaris.

Comparison Between Chlorella vulgaris And Spirulina platensis in Oxidation Ditch Algae Reactor for Treating Tofu Wastewater Savira Safrilia; Lolita Kurniasari; Euis Nurul Hidayah; Okik Hendriyanto Cahyonugroho; Aulia Ulfah Farahdiba
Nusantara Science and Technology Proceedings 5th International Seminar of Research Month 2020
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2021.0907

Wastewater has been giving a high contribution to the quality of water bodies. Tofu wastewater is one of the contributors since it might contain high organic loading. Microalgae is one of the promising solutions to improve wastewater treatment, especially organic wastewater. However, every microalga has its specific properties and it will affect the quality of treated wastewater. This study aims to compare Chlorella vulgaris and Spirulina platensis in an oxidation ditch algae reactor (ODAR) for treating tofu wastewater. The ODAR system was set up under ratio wastewater and microalgae 1:1, the sample was taken every day for 7 days of observation. The sample was analyzed for BOD, DO, and Chlorophyll-a. The results showed that Spirulina platensis has a higher performance in removing organic pollutants than Chlorella vulgaris, which is shown 60% BOD removal, higher DO concentration (5-8 mg/L), and 2,67 mg/L of Chlorophyll-a. Performance of Spirulina plantesis in treating organic wastewater was indicated as a fast-growing microalga than Chlorella vulgaris.

Characterization of Effluent Organic Matter (EfOM) in Domestic Wastewater Using Oxidation Ditch Algae Reactor (ODAR) with Microalgae Spirulina platensis Imaniar Ramadhani; Mochammad Shaifullah Indrawanto; Euis Nurul Hidayah; Okik Hendriyanto Cahyonugroho
Nusantara Science and Technology Proceedings 2nd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

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Oxidation ditch (OD) is a tub used to treat wastewater by utilizing oxygen and microorganisms contained in it to determine its ability to reduce the release of organic substances. Oxidation Ditch Algae Reactor (ODAR) is a biological wastewater treatment that utilizes the symbiosis between algae and bacteria in water. The results of biological processes contain organic material called effluent organic matter (EfOM). This research aims to investigate the characterization of effluent organic matter (EfOM) produced from the Oxidation ditch (OD) process with and without algae both in continuous aeration (oxic) and intermittent aeration (oxic-anoxic) conditions in domestic household wastewater and microalgae Spirulina platensis. Characterizing effluent organic matter (EfOM) is a crucial thing to understand its ability to treat wastewater. Based on the analysis results, the characterization of effluent organic matter (EfOM) in the oxidation ditch process using an algae ratio of 1:1 in continuous aeration (oxic) conditions through the UV254 test was identified as containing the highest aromatic organic matter up to 59.68%. Meanwhile, without using algae with a 1:0 ratio of intermittent aeration (oxic-anoxic) conditions, the lowest decrease in aromatic organic matter content reached 34.79%.

Characterization of Organic Fraction Produced by Spirulina platensis in Oxidation Ditch Reactor Fairuz Khurotul Aini; Valentino Rizkiar Pradana; Euis Nurul Hidayah; Okik Hendriyanto Cahyonugroho
Nusantara Science and Technology Proceedings 2nd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

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The biggest source of river water pollution is domestic wastewater, about 60-70% with 6.1% treatment and 40% of the pollution comes from industry or others and is exacerbated by the uncontrolled algae growth. The diversity of algal organic matter (AOM) in domestic wastewater causes several problems in water treatment. Fluorescence Excitation Emission Matrix (FEEM) has been widely used to determine the structural and compositional characteristics of molecules. The purpose of this study was to determine the characteristics of the AOM fraction produced by the microalgae Spirulina platensis using FEEM. The peak percentage of EEM and the Fluorescence Regional Index (FRI) was used to represent the substance contained in the sample. The results showed the microalgae Spirulina platensis identified as containing fraction aromatic protein-like, fulvic acid-like, soluble microbial product-like, and humic acid-like where the percentage of FRI of each fraction fluctuates due to internal factors such as microbial carbon sources and external factors such as temperature and oxygen supply.

Estimasi Serapan Karbon dan Oksigen Hasil Produksi Mangrove di Kawasan Mangrove Teluk Palu, Kabupaten Donggala Novira Putri Amini; Okik Hendriyanto Cahyonugroho
Jurnal Serambi Engineering Vol 8, No 3 (2023): Juli 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i3.6345

Kecamatan Banawa merupakan kawasan pesisir di Kabupaten Donggala, Provinsi Sulawesi Tengah, yang menjadi rumah bagi ekosistem mangrove dengan berbagai vegetasi. Mangrove adalah penyimpan karbon yang efisien di ekosistem pesisir. Karbon yang diserap dan disimpan oleh mangrove kemudian akan diubah menjadi oksigen yang dilepaskan ke atmosfer. Penelitian ini dilakukan untuk mengukur total biomassa, cadangan karbon dan oksigen yang dihasilkan oleh mangrove di Desa Kabonga Besar, Kabupaten Donggala, Provinsi Sulawesi Tengah. Penelitian ini dimulai pada bulan Maret 2023 hingga bulan April 2023, di Desa Kabonga Besar, Kecamatan Banawa, Kabupaten Donggala, Provinsi Sulawesi Tengah. Metode pengambilan sampel dan pengumpulan data yang digunakan pada penelitian ini adalah metode pengambilan sampel non destruktif. Perkiraan total cadangan karbon adalah 1.648,0 ton∙ha-1, yang setara dengan 6.048,2 ton∙ha-1 karbon yang terserap. Ketiga spesies mangrove yang diteliti dapat melepaskan oksigen sebanyak 4.400,2 ton∙ha-1. Potensi besar penyimpanan karbondioksida oleh mangrove, diharapkan dapat menjadi solusi emisi gas rumah kaca. Oksigen yang dihasilkan oleh mangrove dapat membantu makhluk hidup lainnya dalam proses respirasi dan pembusukan.

EFISIENSI METODE DEEP FLOW TECHNIQUE UNTUK MENURUNKAN BOD, COD DAN TSS PADA LIMBAH CAIR DOMESTIK MENGGUNAKAN TUMBUHAN KAYU APU DAN KANGKUNG AIR Okik Hendriyanto Cahyonugroho; Raka Rulistyanto Prakoso Putra
Envirotek : Jurnal Ilmiah Teknik Lingkungan Vol. 13 No. 1 (2021): Envirotek: Jurnal Ilmiah Teknik Lingkungan
Publisher : Universitas Pembangunan Nasional Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/envirotek.v13i1.114

Di indonesia, terdapat berbagai pencemar lingkungan, salah satunya berasal dari aktifitas rumah tangga. Maka dari itu, muncul berbagai ide dalam penanganan lingkungan yang tercemar. Salah satunya menggunakan metode fitoremediasi. Dalam penelitian ini menggunakan tumbuhan kayu apu (Pistia stratiotest L) dan kangkung air (Ipomea aquatica) yang ditanam menggunakan sistem hidroponik. Dalam hidroponik terdapat dua sistem, yaitu sistem DFT (Deep Flow Technique) dan NFT (Nutrient Film Technique). Pada penelitian ini menggunakan dua macam sistem, dengan penambahan aerasi dan tanpa aerasi, dengan variasi jarak antar tumbuhan 5cm, 10cm dan 15cm dan menggunakan dua jenis tumbuhan, yaitu kangkung air dan kayu apu. Lama penelitian yang dilakukan 15 hari, 7 hari pertama aklimatisasi dan 8 hari terakhir penelitian utama. Hasil penelitian menunjukan bahwa perlakuan paling optimal terdapat pada tumbuhan kayu apu dengan jarak antar tumbuhan 5cm, dengan penambahan aerasi dan menggunakan sistem DFT mencapai BOD 58,41%, COD 32,36% dan TSS 62%.

PENGOLAHAN LIMBAH DOMESTIK RUMAH MAKAN DENGAN MOVING BED BIOFILM REACTOR (MBBR) Okik Hendriyanto Cahyonugroho; Aditya Titian Dickdoyo
Envirotek : Jurnal Ilmiah Teknik Lingkungan Vol. 13 No. 1 (2021): Envirotek: Jurnal Ilmiah Teknik Lingkungan
Publisher : Universitas Pembangunan Nasional Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/envirotek.v13i1.116

Saat ini usaha rumah makan jumlahnya semakin meningkat. Air buangan yang diakibatkan oleh aktivitas rumah makan tersebut akan menjadi suatu permasalahan bagi lingkungan. Pengolahan air buangan rumah makan bisa dilakukan dengan cara pengolahan biologis karena dapat menurunkan kandungan organik pada air limbah. Proses pengolahan biologis yang dapat digunakan yaitu dengan sistem Moving Bed Biofilm Reactor (MBBR). Proses MBBR pada prinsipnya adalah pertumbuhan biologis dengan menggunakan biakan tersuspensi dan melekat yang tercampur didalam suatu reaktor dengan aerasi dan media yang bergerak. Penelitian ini bertujuan untuk mengetahui kinerja MBBR dalam menurunkan TOC dan TSS pada air buangan rumah makan. Media yang digunakan adalah Kaldness K3 dan Bioball dengan variasi komposisi media yaitu 100% Kaldness K3, 100% Bioball, 50% Kaldness K3 dan 50% Bioball, 60% Kaldness K3 dan 40% Biobll, 40% Kaldness K3 dan 60% Bioball. Variasi kedua adalah waktu sampling yaitu 3 jam, 6 jam, 9 jam, 12 jam, dan 15 jam. Berdasarkan hasil penelitian ini menunjukkan bahwa kemampuan reaktor MBBR paling optimum adalah dengan komposisi 100% Kaldness K3 pada waktu sampling 15 jam. Reaktor tersebut dapat menurunkan TOC sebesar 97,84% dan untuk penurunan TSS sebesar 76,84%

Estimasi Serapan Karbon dan Oksigen Hasil Produksi Mangrove di Kawasan Mangrove Teluk Palu, Kabupaten Donggala Novira Putri Amini; Okik Hendriyanto Cahyonugroho
Jurnal Serambi Engineering Vol 8, No 3 (2023): Juli 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i3.6345

Kecamatan Banawa merupakan kawasan pesisir di Kabupaten Donggala, Provinsi Sulawesi Tengah, yang menjadi rumah bagi ekosistem mangrove dengan berbagai vegetasi. Mangrove adalah penyimpan karbon yang efisien di ekosistem pesisir. Karbon yang diserap dan disimpan oleh mangrove kemudian akan diubah menjadi oksigen yang dilepaskan ke atmosfer. Penelitian ini dilakukan untuk mengukur total biomassa, cadangan karbon dan oksigen yang dihasilkan oleh mangrove di Desa Kabonga Besar, Kabupaten Donggala, Provinsi Sulawesi Tengah. Penelitian ini dimulai pada bulan Maret 2023 hingga bulan April 2023, di Desa Kabonga Besar, Kecamatan Banawa, Kabupaten Donggala, Provinsi Sulawesi Tengah. Metode pengambilan sampel dan pengumpulan data yang digunakan pada penelitian ini adalah metode pengambilan sampel non destruktif. Perkiraan total cadangan karbon adalah 1.648,0 ton∙ha-1, yang setara dengan 6.048,2 ton∙ha-1 karbon yang terserap. Ketiga spesies mangrove yang diteliti dapat melepaskan oksigen sebanyak 4.400,2 ton∙ha-1. Potensi besar penyimpanan karbondioksida oleh mangrove, diharapkan dapat menjadi solusi emisi gas rumah kaca. Oksigen yang dihasilkan oleh mangrove dapat membantu makhluk hidup lainnya dalam proses respirasi dan pembusukan.

Pemanfaatan Limbah Keraginan Rumput Laut Menjadi Plastik Biodegradable Eginta Marovid Tarigan; Okik HendriyantoCahyonugroho
Jurnal Serambi Engineering Vol. 9 No. 1 (2024): Januari 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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This research aims to utilize seaweed craft waste as a basic material for biodegradable plastic by adding chitosan and sorbitol as plasticizers. Seaweed craft waste is extracted to obtain cellulose which is then mixed with chitosan and sorbitol in certain variations. The mechanical characteristics, biodegradation and water absorption capacity of the resulting biodegradable plastic were evaluated. The research results showed that the tensile strength of biodegradable plastic ranged from 1.68 to 2.41 MPa, elongation ranged from 6.9% to 20.9%, biodegradation test ranged from 63.5% to 66.53%, and water absorption capacity. ranges from 1.8% to 2.37%. Statistical correlation shows that the addition of chitosan tends to strengthen the mechanical properties and inhibit biodegradation and water absorption, while the addition of sorbitol tends to weaken the mechanical properties and increase the water absorption. The optimum conditions for biodegradable plastic vary depending on the parameters measured, and the characteristics of the plastic do not fully meet applicable standards. Nevertheless, this research provides an overview of the potential and limitationsof using seaweed craft waste for the production of biodegradable plastic.

Evaluasi Pengelolaan Limbah B3 PT Perusahaan Gas Negara TBK – Sales & Operation Regional III (Studi Kasus Offtake Station Waru) Zakkiyah Salwa Meydhita Nur Sabrina; Okik Hendriyanto Cahyonugroho
Jurnal Serambi Engineering Vol. 9 No. 2 (2024): April 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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PT Perusahaan Gas Negara Tbk (PGN) - Sales and Operation Region III (SOR III) is a natural gas distribution company. PGN generates hazardous and toxic waste (B3) from operational activities and equipment maintenance. The company manages the waste to reduce the environmental impact through various stages such as reduction, storage, packaging, labelling and transport in collaboration with third parties. The aim of this research is to evaluate the company's B3 waste management practices and, if necessary, propose recommendations for improvement. The research method used was field observation, analysis of internal documents related to B3 waste management and evaluation using the Guttman Scale method. The results of the B3 waste management assessment showed a score of 77.4% and was categorised as "good".

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