Charge coupled device based on optical tomography system in detecting air bubbles in crystal clear water

Jamaludin, Juliza; Rahim, Ruzairi Abdul; Rahim, Herlina Abdul; Rahiman, Mohd Hafiz Fazalul; Muji, Siti Zarina Mohd; Rohani, Jemmy Mohd

doi:10.1016/j.flowmeasinst.2016.06.001

Cited by 15 publications

(8 citation statements)

References 9 publications

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“…This observation agrees with column flotation experiment, the bubble motion and bubble rise velocity were influenced by gas injection which was blown by compressor [22,23]. In general when gas injection increased, the bubble moved spirally and the shape of the rising bubble could be sphere or oval [24][25][26]. At this stage, those phenomenon were also observed, however more detail investigation may be conducted to elucidate the bubbles or bubble swarm movements.…”

Section: Resultssupporting

confidence: 84%

Electrical Capacitance Volume Tomography Validation of Column Flotation Process with Gas Injection Variation

Harjanto¹,

Haryono

Faisal

et al. 2018

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Electrical capacitance volume tomography (ECVT) is proposed as a novel realtime monitoring system for column flotation process. This study aims to validate the results between static and dynamic simulations using ECVT and ECVT-Computational Fluids Dynamics (ECVT-CFD) and real-time column flotation monitoring experiment using ECVT system. Bubble fractions from both the simulations and the experiments with the variation of gas velocity (0.02, 0.03 and 0.04 m/s) were compared and measured. The results of the study showed that ECVT experiments successfully simulated the images of bubbles inside the real-time column flotation. Both simulations and experiments showed that the bubble fraction increased with the increasing of gas velocity. Furthermore, the comparison between the simulated bubble fraction and the experimental results gave a validation accuracy range of 86%-98%. It was also indicated that at higher gas velocity (0.04 m/s) the accuracy of the simulations is better than that of lower gas velocity (0.02 and 0.03 m/s).

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Section: Resultssupporting

confidence: 84%

Electrical Capacitance Volume Tomography Validation of Column Flotation Process with Gas Injection Variation

Harjanto¹,

Haryono

Faisal

et al. 2018

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“…Bubbles (Technique 4) occur when air is blown steadily through an orifice submerged in a liquid (Davidson & Schüler, 1960;Zhang & Tan, 2000;Sun et al, 2019), where one of which is using a syringe (Jamaludin et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

The Bias of Web Based Rain Gauge Calibrator Due to Bubbles

Wijonarko

Rustandi²,

Maftukhah³

et al. 2020

instrum.

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This study was devoted to investigate the bias due to entrapped air -in the cylindrical tube water -to a web based rain gauge calibrator (WBRGC). This study was carried out in laboratory temperature around 25 °C using experiment method, especially by comparing the mass of the water with and without bubbles. The entrapped air used the space for 1.57 g of 1009.82 g of water if there were no bubbles, so this condition made bias around -0.16 %.This bias was very significant in contributing the uncertainty of WBRGC, where in this case was 3 ml for 966 ml of water (0.31 %). Hence, this bias should be promptly overcome.

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“…The luminosity for lasers is maintained at 0.3 Lux for the full non-flowing crystal clear water experiments. For the early stage experiments to compare and analyse the LED and laser performance, values of 0.5 Lux for the laser and 1.4 Lux for the LED are maintained [3].…”

Section: Methodsmentioning

confidence: 99%

Optical Tomography System Using Charge-Coupled Device for Transparent Object Detection

Jamaludin

Rahim

Rahiman

et al. 2018

IJIE

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Charge coupled device based on optical tomography system in detecting air bubbles in crystal clear water

Cited by 15 publications

References 9 publications

Electrical Capacitance Volume Tomography Validation of Column Flotation Process with Gas Injection Variation

Electrical Capacitance Volume Tomography Validation of Column Flotation Process with Gas Injection Variation

The Bias of Web Based Rain Gauge Calibrator Due to Bubbles

Optical Tomography System Using Charge-Coupled Device for Transparent Object Detection

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