An Arduino Uno Based Biosensor for Water Pollution Monitoring Using Immobilised Algae Chlorella Vulgaris

Umar, Lazuardi; Setiadi, Rahmondia Nanda; Hamzah, Yanuar; Linda, Tetty Marta

doi:10.21307/ijssis-2018-027

Cited by 10 publications

(3 citation statements)

References 20 publications

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“…The photosynthesis is stimulated by an artificial daylight using a light source, in which the wavelength is in accordance with the amount of photosynthesis active radiation at 450 nm up to 750 nm. Previous experimental results show the response of the photosynthesis process to the DO level and it can be used to detect a change of DO level produced from the photosynthesis process of the algae Chlorella kessleri [6].…”

Section: Po2 Measurement From Algae Photosynthesis Activitymentioning

confidence: 99%

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Biosensor signal improvement using current mirror topology for dissolved oxygen measurement

Umar

Hamzah

Setiadi

2019

Meas. Sci. Technol.

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A biosensor system for dissolved oxygen level detection based on a current mirror method has been designed and characterized. Most biosensor systems implement a transimpedance circuit to convert the flowing current on the sensor to an output voltage signal. These systems are voracious and susceptible to instability and noise due to the configuration of the circuit used. The power supply is also impractical due to the bipolar polarity needed, and the systems consume more power since they use more active devices in the op-amp. These disadvantages need to be overcome when special requirements are needed such as low-noise measurement in dissolved oxygen level detection, and for battery-powered and low-power devices for in situ and remote area measurement. Differing from transimpedance, current mirror circuits convert the flowing current to the output voltage by copying the current with a ground-referenced input and output, and use fewer active devices. The proposed current mirror circuit aims to diminish the noise of the output and minimize the power consumption through reducing the active devices used. The results show some significant signal quality improvements when using the current mirror circuit, where the noise response of the current mirror circuit is ten times lower than the transimpedance circuit.

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Section: Po2 Measurement From Algae Photosynthesis Activitymentioning

confidence: 99%

“…The dissolved oxygen level in the solution can be measured, since it can create ions and affect the conductivity of the solution. Some previous works [5,6] have implemented this method using a transimpedance circuit to detect the dissolved oxygen produced by the algae. The algae photosynthesis can be detected very well.…”

Section: Introductionmentioning

confidence: 99%

Biosensor signal improvement using current mirror topology for dissolved oxygen measurement

Umar

Hamzah

Setiadi

2019

Meas. Sci. Technol.

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“…This light must have a certain wavelength to match the sensitivity of the algae. In this study, the light with a wavelength of 450 to 750 nm was used [7]. To determine the difference in the amount of dissolved oxygen, the light is given and removed.…”

Section: Measurementsmentioning

confidence: 99%

Biosensor System Design for Dissolved Oxygen Measurement Using Current Mirror Circuit

Umar¹,

Setiadi²,

Arfianti³

et al. 2019

SPEKTRA

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A biosensor system using a current mirror circuit has been designed and characterized. Biosensor system usually implements an amperometric circuit such as a trans-impedance topology to measure current flowing in the solution due to the contained dissolved oxygen. The trans-impedance circuit implemented for the biosensor has some drawbacks and disadvantages. The implementation of this circuit exhibits rather high noise, besides the impracticality of the power supply used due to bipolar voltage need to allow negative voltage output. In this paper, a classical current mirror circuit is used to convert the flowing current in the solution. The use of the classical current mirror circuit is aimed to obtain lower noise level, besides the easiness in providing the power supply for the system, since the circuit consists only of small number of active components and does not need a bipolar power supply. The measurement is performed utilizing an algae species as a bio-receptor for the measured dissolved oxygen. By utilizing this circuit, the biosensor measurement system can be optimized with better precision and noise performance. Consequently, the dissolved oxygen measurements can be improved and achieve good results. Besides, the system can detect the changes in dissolved oxygen due to the photosynthetic process of the algae.

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Influence of herbicide 2,4-D dimethylamine 865SL on photosynthetic mechanism of algae species Chlorella Kessleri immobilized in a biochip

Umar

Harvenda

Setiadi

et al. 2019

The 8th National Physics Seminar 2019

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An Arduino Uno Based Biosensor for Water Pollution Monitoring Using Immobilised Algae Chlorella Vulgaris

Cited by 10 publications

References 20 publications

Biosensor signal improvement using current mirror topology for dissolved oxygen measurement

Biosensor signal improvement using current mirror topology for dissolved oxygen measurement

Biosensor System Design for Dissolved Oxygen Measurement Using Current Mirror Circuit

Influence of herbicide 2,4-D dimethylamine 865SL on photosynthetic mechanism of algae species Chlorella Kessleri immobilized in a biochip

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