Effect of microbubble generator operating parameters on oxygen transfer efficiency in water

Tekile, Andinet; Kim, Il-Ho; Lee, Jaiyeop

doi:10.1080/19443994.2016.1178604

Cited by 14 publications

(5 citation statements)

References 15 publications

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“…Though, laboratory scale set up does not give an accurate idea of energetics of upscaling, but it can provide a suggestion on the probable trend. An economic efficiency study was carried out by Andinet et al (2016) to assess the running cost benefit of supplying air or oxygen microbubble for aeration of 20 minutes. The air was found to be a more economical option at lower pressure conditions, whereas the cost of oxygen gas per unit dissolution decreased at higher pressure conditions.…”

Section: Cost and Energy Consumption Analysismentioning

confidence: 99%

Contemporary application of microbubble technology in water treatment

Nair

Pinedo‐Cuenca

Stubbs

et al. 2022

Water Science and Technology

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Microbubble technology constitutes a suite of promising low-cost technologies with potential applications in various sectors. Microbubbles (MBs) are tiny gas bubbles with diameter in the micrometre range of 10–100 μm. Along with their small size, they share special characteristics like slow buoyancy, large gas-liquid interfacial area and high mass transfer efficiency. Initially, the review examines the key dissimilarities among the different types of microbubble generators (MBG) towards economic large-scale production of MBs. The applications of MBs to explore their effectiveness at different stages of waste-water treatment extending from aeration, separation/ flotation, ozonation, disinfection and other processes are investigated. A summary of the recent advances of MBs in real and synthetic wastewater treatment, existing research gaps, and limitations in upscaling of the technology, conclusion and future recommendations is detailed. A critical analysis of the energetics and treatment cost of combined approaches of microbubble technology with other advanced oxidation processes (AOPs) is carried out highlighting the potential applicability of hybrid technology in large scale waste-water treatment.

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Section: Cost and Energy Consumption Analysismentioning

confidence: 99%

Contemporary application of microbubble technology in water treatment

Nair

Pinedo‐Cuenca

Stubbs

et al. 2022

Water Science and Technology

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“…Meanwhile, injection methods using microbubble dissolve ozone by pressurization, and they were reported to show a higher efficiency than other dissolution methods [16,17].…”

Section: Eduardo Et Al Reviewed the Removal Of Ppcps Through Variousmentioning

confidence: 99%

Comparison of ozonation removal for PPCPs in secondary treated sewage by microbubble generator and ejector

Kim

Lee

2021

Environmental Engineering Research

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This study analyzed residues of PPCPs in secondary treated sewage water, and their amount eliminated by ozonation processes. A microbubble nozzle and ejector were used to dissolve ozone. To consider a low concentration of PPCPs, a SPE method was performed on samples prior to the analysis. The concentration of dissolved ozone was 4.00 mg/L in the microbubble and 2.49 mg/L in the ejector. To examine elimination trends, the experiment was also performed at a low concentration of ozone, 1/10 of its original concentration. The maximum elimination rate on average was 93.0% in the ejector, higher than that in the microbubble (90.1%), but 16 PPCPs were found to show a relatively high elimination rate in the microbubble, higher than the ejector. Elimination trends with respect to time were distinguished based on inflection point, and 11 PPCPs were concentrated on the latter half of the microbubble after the inflection point at the low concentration of ozone, which was compared to other cases. In the source water, concentrations of 2 PPCPs were higher than the reference toxic concentration based on the QSAR model, but after treatment, only bezafibrate was over the value when the ejector with low ozone injection concentration was applied.

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“…Fine Bubbles (FBs) technology is a renewable technology that can be implemented in aquaponic activities since it is capable to increase fish productivity and the aquaponic system efficiency. FBs produce 150-200 nm bubbles to provide dissolved oxygen for an extensive period and under stable conditions (Andinet et al, 2016). The FBs aeration system can significantly increase the activity of Ammonia Oxidizing Bacteria (AOB) and Nitrite Oxidizing Bacteria (NOB) to accelerate biological activity in waters.…”

Section: Introductionmentioning

confidence: 99%

Water quality and water spinach productivity in aquaponic systems using fine bubbles (FBS)

Hasan

Andriani

Anando

et al. 2022

J. AGRO

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Fine bubbles (FBs) merupakan teknologi baru dalam sistem akuaponik yang diharapkan mampu meningkatkan produksi ikan dan tanaman. Penelitian ini bertujuan untuk menentukan pemberian tekanan fine bubbles (FBs) yang dapat meningkatkan kualitas air dan produktivitas kangkung dalam sistem akuaponik. Penelitian dilaksanakan pada bulan Januari – Maret 2022 di Green House Ciparanje Fakultas Perikanan dan Ilmu Kelautan Universitas Padjadjaran, Jatinangor. Penelitian ini menggunakan metode eksperimental Rancangan Acak Lengkap (RAL) dengan empat perlakuan dan tiga ulangan. Perlakuan yang digunakan adalah pemberian tekanan FBs masing-masing 0 atm (A), 5,25 atm (B), 5,5 atm (C), 5,75 atm (D). Parameter kualitas air yang diukur terdiri atas parameter fisika (suhu) dan kimia (oksigen terlarut, pH, amonia, dan nitrat). Hasil penelitian menunjukkan pemberian tekanan FBs 5,75 atm menghasilkan suhu berkisar 24,4℃ - 26,5℃, kandungan oksigen terlarut sebesar 7,83 mg, pH 6,98 – 8,07, konsentrasi amonia 0,002 mg L-1, yang berpengaruh pada pertumbuhan ikan yang baik serta konsentrasi nitrat 0,316 mg L-1 yang berpengaruh pada produktivitas tanaman yang lebih tinggi, menghasilkan pertumbuhan tinggi tanaman 128,83 cm, bobot tanaman 140,60 g, dan jumlah daun 284 helai.ABSTRACTThe fine bubbles (FBs) is a new technology in aquaponic system that is expected to improve the fish and plant productivity. This study aimed to determine the application of fine bubbles pressure in improving water quality and water spinach in an aquaponic system. The research was conducted from January to March 2022 at Ciparanje Green House, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran, Jatinangor. This study used an experimental method of Completely Randomized Design (CRD) with four treatments and three replications. The treatments used were FBs pressure of 0 atm (A), 5.25 atm (B), 5.5 atm (C), 5.75 atm (D). The water quality parameters measured consisted of physical (temperature) and chemical (dissolved oxygen, pH, ammonia, and nitrate) parameters. The results showed that the pressure of FBs 5.75 atm generated temperatures ranging from 24.4oC - 26.5 oC, dissolved oxygen content of 7.83 mg L-1, pH 6.98 – 8.07, ammonia concentration 0.002 mg L-1 which affected on good fish growth and nitrate concentration 0.316 mg L-1 which affected higher plant productivity, resulting plant height of 128.83 cm, a plant weight of 140.60 g, and the number of leaves of 284 leaves.

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Effect of microbubble generator operating parameters on oxygen transfer efficiency in water

Cited by 14 publications

References 15 publications

Contemporary application of microbubble technology in water treatment

Contemporary application of microbubble technology in water treatment

Comparison of ozonation removal for PPCPs in secondary treated sewage by microbubble generator and ejector

Water quality and water spinach productivity in aquaponic systems using fine bubbles (FBS)

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