Degradation of phenol and 2,4-dichlorophenol wastewater by ozonation in multi-injection bubble column reactor

Wahyudi, Dionisius P.; Ghaisani, Sarah V.; Bismo, Setijo

doi:10.1088/1742-6596/1349/1/012074

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…Berdasarkan pada Tabel 1, terlihat bahwa peningkatan laju alir dan waktu kontak akan berbanding lurus terhadap konsentrasi ozon terlarut. Semakin banyak ozon yang masuk ke dalam reaktor, maka dapat meningkatkan produksi radikal hidroksil (Wahyudi et al, 2019). Ozonasi tetap dapat berlangsung dalam rentang pH 2-12 (Arroyo et al, 2022), sehingga di dalam penelitian ini tidak menjadikan pH sebagai variabel utama agar mengurangi penggunaan bahan kimia terhadap penyesuaiannya.…”

Section: Pengaruh Preozonasi Terhadap Perubahan Phunclassified

Preozonasi Sebagai Pretreatment Air Baku: Studi Kasus Instalasi Pengolahan Air Minum (IPAM) Ngagel I Kota Surabaya

Ibnu Luthfi Saud,

Nurhayati

2023

envirotek

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Semakin menurunnya kualitas air sungai sebagai air baku air minum membawa tantangan tersendiri bagi PDAM agar instalasi pengolahan air (IPA) yang ada tetap bisa mengolah air dengan baik. Salah satu yang dapat dilakukan adalah dengan melakukan pretreatment sebelum air diolah di IPA. Salah satu teknologi pretreatment yang dapat diterapkan adalah preoksidasi dengan menggunakan ozon yang disebut dengan preozonasi. Penelitian ini bertujuan untuk menganalisis pengaruh penambahan preozonasi, sebagai bentuk pretreatment air baku, terhadap perubahan parameter pH, warna, kekeruhan, TSS, COD, dan amonia. Metedologi dalam penelitian ini adalah dengan menginjeksi ozon ke dalam sampel air (effluent bak prasedimentasi IPAM Ngagel I) dengan variasi laju alir (1, 2, dan 3 L/min) serta variasi waktu kontak (10, 20, dan 30 menit). Berdasarkan penelitian yang dilakukan, didapatkan bahwa preozonasi mampu menyisihkan kekeruhan (3%), warna (4%), TSS (0%), COD (26%), dan amonia (35%) serta pH yang sedikit meningkat (mendekati kondisi netral). Penyisihan tersebut didapatkan dengan cukup menggunakan variasi laju alir sebesar 2,6 L/min dan waktu kontak selama 30 menit. Preozonasi signifikan dalam menyisihkan parameter kimia (COD dan amonia) dan tidak terlalu berpengaruh terhadap parameter fisik (kekeruhan, warna, dan TSS). Dengan penambahan preozonasi ini diharapkan dapat meringankan beban pengolahan selanjutnya yaitu unit koagulasi dan flokulasi sehingga dapat mengurangi konsumsi koagulan

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Section: Pengaruh Preozonasi Terhadap Perubahan Phunclassified

Preozonasi Sebagai Pretreatment Air Baku: Studi Kasus Instalasi Pengolahan Air Minum (IPAM) Ngagel I Kota Surabaya

Ibnu Luthfi Saud,

Nurhayati

2023

envirotek

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“…It also yields a more homogeneous mixture. In the bubble column, oxidation reactions such as degradation, sterilization, and chemical bond severance [13], [14], [15], [16].…”

Section: Experimental Installationmentioning

confidence: 99%

Degradation of 2,4-Dichlorophenol in Aqueous Solution by Ozonation in the Presence of Iron Oxide Compound in Bubble Column Reactor

Wahyudi

Ghaisani

Bismo³

2020

EngJ

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Chlorophenols are a group of chemical substances given special attention by experts and researchers of industrial wastewater due to their high toxicity and low biodegradability. The degradation of these compounds, often used in studies is 2,4-Dichlorophenol (2,4-DCP), either use conventional processing methods or contemporary approaches such as catalytic ozonation and AOPs (Advanced Oxidation Processes). The laboratory-scale 2,4-DCP degradation technique in this study was carried out in a multiinjection bubble column, with very satisfactory processing results. This is mainly due to the ability of hydroxyl radicals to decompose almost all 2,4-DCP in wastewater as well as not giving out a dangerous product. Specifically, the chlorophenol waste used here is a synthetic wastewater or dilute 2,4-DCP solution focused on investigating the effect of air flow rate, wastewater flow rate, and the amount of iron oxide (FeO and / or Fe2O3) involved. This bench scale processing of 2,4-DCP degradation is a semi-continuous, with an initial concentration of 2,4-DCP of 50 ppm and 60 minutes of ozonation time. In this study, the use of FeO and/or Fe2O3 catalysts does not significantly affect the degradation efficiency of 2,4-DCP. With the non-catalytic ozonation technique, the highest percentage of phenolic and COD degradation obtained was 99.83% and 84.31% at an air flow rate of 12 L / min and a wastewater flow rate of 495 mL / min. For catalytic ozonation, the highest phenolic and COD degradation under the same operating conditions was 99.64% and 86.44%.

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Phenol degradation by fenton reaction in air injection using plasma electrolysis method

Wahono

Yusharyahya

Harianingsih

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Phenolic compounds are pollutants which have high toxicity and could be harmful to the environment even at low concentrations. The degradation of phenolic has been conducted by various methods including photocatalytic and ozonation. However, these methods require high costs and large energy. Therefore, plasma electrolysis by the Fenton reaction may be an alternative method for phenol degradation. The purpose of this study is to determine the optimum conditions for phenol degradation by adding Fe2+ ions. The result shows that the most effective phenol degradation was obtained by using an optimum power of 700 watts with an air injection flow rate of 0.2 L/min and addition Fe2+ 20 ppm ions for 30 min experiments. Based on these conditions, the concentration of phenol in waste was reduced to 0.425 mg/L and the highest percentage of phenol degradation (99.58%) was observed. The final phenol concentrations obtained in this study met the quality standards for clean water at a concentration of 1 mg/L as well as the quality standards for drinking water treatment at a concentration of 0.5 mg/L.

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Degradation of phenol and 2,4-dichlorophenol wastewater by ozonation in multi-injection bubble column reactor

Cited by 4 publications

References 14 publications

Preozonasi Sebagai Pretreatment Air Baku: Studi Kasus Instalasi Pengolahan Air Minum (IPAM) Ngagel I Kota Surabaya

Preozonasi Sebagai Pretreatment Air Baku: Studi Kasus Instalasi Pengolahan Air Minum (IPAM) Ngagel I Kota Surabaya

Degradation of 2,4-Dichlorophenol in Aqueous Solution by Ozonation in the Presence of Iron Oxide Compound in Bubble Column Reactor

Phenol degradation by fenton reaction in air injection using plasma electrolysis method

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