[논문]Parameter Optimization for Cost Reduction of Microbubble Generation by Electrolysis

Lucero, Arpon Jr; Kim, Dong-Seog; Park, Young-Seek

doi:10.5322/jesi.2017.26.3.269

Parameter Optimization for Cost Reduction of Microbubble Generation by Electrolysis 원문보기

Journal of environmental science international = 한국환경과학회지, v.26 no.3, 2017년, pp.269 - 280

Lucero, Arpon Jr (Department of Environmental Science, Catholic University of Daegu) , Kim, Dong-Seog (Department of Environmental Science, Catholic University of Daegu) , Park, Young-Seek (DU University College, Daegu University)

Abstract ▼ AI-Helper

To lower the operational cost of microbubble generation by electrolysis, optimization of parameters limiting the process must be carried out for the process to be fully adopted in environmental and industrial settings. In this study, four test electrodes were used namely aluminum, iron, stainless steel, and Dimensionally Sable Anode (DSA). We identified the effects and optimized each operational parameter including NaCl concentration, current density, pH, and electrode distance to reduce the operational cost of microbubble generation. The experimental results showed that was directly related to the rate and cost of microbubble generation. Adding NaCl and narrowing the distance between electrodes caused no substantial changes to the generation rate but greatly decreased the power requirement of the process, thus reducing operational cost. Moreover, comparison among the four electrodes operating under optimum conditions revealed that aluminum was the most efficient electrode in terms of generation rate and operational cost. This study therefore presents significant data on performing costefficient microbubble generation, which can be used in various environmental and industrial applications.

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문제 정의

In this section, determination of the optimal NaCl concentration, current density, pH and electrode distance is discussed. As stated previously, one of the main purpose of this study is to determine the optimum operating parameters based on the microbubble generation cost. It is important to note however that only the operational costs (NaCl, power) were included in the computations and was based on every 1,000 liters of microbubbles generated assuming the process is running in multiple reactor units.
The aim of this study is to introduce a straightforward and simpler approach in quantifying the actual rate of microbubble production using electrolysis method. Moreover, evaluate the effects of main operating parameters such as sodium chloride (NaCl) concentration, current density, pH and electrode distance on the rate of microbubble generation and power consumption and finally, optimize these operating parameters based on microbubble generation cost of four different electrode materials.

제안 방법

Every set of experiments was performed to evaluate the effect of NaCl concentration, current density, pH and electrode distance on the rate of microbubble generation with different electrode materials and to optimize each of these operating parameters to reduce the operational cost.
The aim of this study is to introduce a straightforward and simpler approach in quantifying the actual rate of microbubble production using electrolysis method. Moreover, evaluate the effects of main operating parameters such as sodium chloride (NaCl) concentration, current density, pH and electrode distance on the rate of microbubble generation and power consumption and finally, optimize these operating parameters based on microbubble generation cost of four different electrode materials.

대상 데이터

Two different types of electrodes (Sacrificial and non-soluble type of electrodes) were used in this experiment. Sacrificial electrodes consisted of aluminum (Al), and iron (Fe) while non-soluble electrodes included stainless steel (Sus) and Dimensionally Sable Anode (DSA). Aluminum, iron and stainless steel plates were purchased locally all with the same thickness.

이론/모형

In this study, optimization of parameters in order to reduce operational cost of microbubble generation has been carried out using one-parameter-at-a-time approach. Based on the results, the parameter that has a direct relationship with the rate of microbubble generation is current density.

성능/효과

Addition of NaCl to a certain extent and narrowing the distance between electrodes had no significant changes on the rate of generation but tremendously decreased the power requirement of the process which reduced the operational cost of microbubble generation. Furthermore, comparison among four electrodes operating at optimum conditions revealed that aluminum is the most efficient electrode in terms of generation rate and cost outperforming the rest by a wide margin. However, we have to note that aluminum and iron are soluble electrodes.

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Parameter Optimization for Cost Reduction of Microbubble Generation by Electrolysis 원문보기

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Parameter Optimization for Cost Reduction of Microbubble Generation by Electrolysis 원문보기

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