A comparison between digital camera and spectrophotometer for sensitive and selective kinetic determination of brilliant green in wastewaters

Damirchi, Saeed; Maliheh, Ahmadi-Kalateh Khooni; Heidari, Tahereh; Es’haghi, Zarrin; Chamsaz, Mahmoud

doi:10.1016/j.saa.2018.08.011

Cited by 22 publications

(8 citation statements)

References 34 publications

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“…According to our findings, the B/G index performs better than other proposed indices. This is corroborated by the study conducted by [15,18], which point out that B and G bands are suitable for estimating the chlorophyll content. Specific models for estimating chlorophyll a or chlorophyll b cannot be used for estimating chlorophyll contents in water or plants, due to the ratio between these chlorophylls in water or plant is not the same.…”

Section: Chlorophyll and Turbidity Estimation Using Camerassupporting

confidence: 67%

An investigation of copper chlorophyllin solution for low-cost optical devices calibration in chlorophyll measurement

Putra

Purwoko

Indarto

et al. 2019

Int. J. Metrol. Qual. Eng.

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Chlorophylls and turbidity are related parameters deemed important in predicting water quality, especially in the freshwater fisheries sector. In other hand, chlorophyll contents in vegetation are often used as a measure for estimating plant health. To ensure the chlorophyll content, appropriate analysis techniques are needed, which include, yet not limited to, dimethylsulfoxide (DMSO), acetone extraction analysis, and measuring turbidity using expensive equipment. Measurements using these methods are still not reliable, especially for smallholders. In addition, calibration of a digital camera for these purposes requires several efforts of preparing a series of chemical analyses and the qualities of newly developed cameras have increased. Thus, calibration needs to be taken into account for improving the accuracy in estimating chlorophyll contents. This study posits fundamental findings germane to the potential use of chlorophyllin for calibrating the optimal instrument, like consumer-grade cameras. Sodium copper chlorophyllin is commonly used as food additive and ingredients, and medical treatments. However, we can gain another benefit of chlorophyllin, particularly for developing low-cost optical instruments for estimating chlorophyll content through hydro-color-based with promising accuracy.

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Section: Chlorophyll and Turbidity Estimation Using Camerassupporting

confidence: 67%

An investigation of copper chlorophyllin solution for low-cost optical devices calibration in chlorophyll measurement

Putra

Purwoko

Indarto

et al. 2019

Int. J. Metrol. Qual. Eng.

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“…By analyzing the test data of pivoting center shift of flexible joint, it can be seen that the higher frequency of original data acquisition will lead to the excessive detection noise, and the proper reduction of the frequency will not distort the curve of the detection results (Tao et al, 2020 ; Zhang, 2020 ; Moru and Borro, 2021 ). Analysis shows that the high precision detection of pivoting center shift of flexible joint can be achieved when the image acquisition frequency reaches 21 Hz (Pohanka et al, 2018 ; Damirchi et al, 2019 ; Marina et al, 2020 ; Zhou et al, 2020 ).…”

Section: Methodsmentioning

confidence: 99%

Research on Intelligent Identification of Pivoting Center and Smooth Processing of Test Data for Flying Flexible Joint

Wen

Tan

2021

Front. Neurorobot.

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In this paper, a method of intelligent identification and data smooth processing of flying flexible joint pivoting center based on machine vision is proposed. The intelligent identification is realized by the following process: first of all the geometric center of the two markers attached to the flying body is located on a straight line at a certain angle to the center-line of the measured pivoting body, secondly then continuous image sampling is carried out by industrial camera when the marker swings with the pivoting body, and image data is transmitted through a data interface to an industrial computer, Finally the image processing module de-noises the image, removes the background and locates the markers to obtain the plane coordinates of the markers in the coordinate system of the test system. The data smooth of obtained coordinates is carried outby Matlab software including the following steps: the coordinates of the mark points detected based on machine vision are optimized to obtain the smooth curve by fitting of the parabola and arc. Then the coordinates of the points on the curve are used to optimize the coordinates of the marked points from measurement. The optimized coordinate values are substituted into the calculation module of pivoting center, so the average pivoting center of the sampling interval of two images is calculated according to the mathematical model to approach the instantaneous pivoting center during the motion of the pivoting body. The result processing module displays and records the curve of pivoting center shift directly and effectively. Finally, it is validated by simulation and experiments that the precision of pivoting center measured by such measuring system is ~0.5%.

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“…Another class of ECs are pesticides, which mostly originate from agricultural field rather than from municipalities and about 3.4 µg L −1 of triclosan was detected in the influents of WTPs in United States, similarly atrazine with concentration of 1.65 µg L −1 was found in Australian surface waters [19,20]. On the other hand, phenolic compound nonylphenol was detected in the influent of sewage treatment plant of United Kingdom with the concentration ranging between 32 and 63 µg L −1 ; whereas, the textile industries majorly contribute toward the existence of dyes in wastewater; as a result, about 32,200 µg L −1 of brilliant green was detected in the textile wastewater of Iran [17,21]. Owing to the global use of surfactant in laundry, restaurant, and car washing, globally these pollutants are detected in the range of 10-20 mg L −1 in municipal wastewaters [22].…”

Section: Occurrencementioning

confidence: 99%

Role of bioelectrochemical systems for the remediation of emerging contaminants from wastewater: A review

et al. 2021

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Bioelectrochemical systems (BESs) are a unique group of wastewater remediating technology that possesses the added advantage of valuable recovery with concomitant wastewater treatment. Moreover, due to the application of robust microbial biocatalysts in BESs, effective removal of emerging contaminants (ECs) can be accomplished in these BESs. Thus, this review emphasizes the recent demonstrations pertaining to the removal of complex organic pollutants of emerging concern present in wastewater through BES.Owing to the recalcitrant nature of these pollutants, they are not effectively removed through conventional wastewater treatment systems and thereby are discharged into the environment without proper treatment. Application of BES in terms of ECs removal and degradation mechanism along with valuables that can be recovered are discussed. Moreover, the factors affecting the performance of BES, like biocatalyst, substrate, salinity, and applied potential are also summarized. In addition, the present review also elucidates the occurrence and toxic nature of ECs as well as future recommendations pertaining to the commercialization of this BES technology for the removal of ECs from wastewater. Therefore, the present review intends to aid the researchers in developing more efficient BESs for the removal of ECs from wastewater.

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A comparison between digital camera and spectrophotometer for sensitive and selective kinetic determination of brilliant green in wastewaters

Cited by 22 publications

References 34 publications

An investigation of copper chlorophyllin solution for low-cost optical devices calibration in chlorophyll measurement

An investigation of copper chlorophyllin solution for low-cost optical devices calibration in chlorophyll measurement

Research on Intelligent Identification of Pivoting Center and Smooth Processing of Test Data for Flying Flexible Joint

Role of bioelectrochemical systems for the remediation of emerging contaminants from wastewater: A review

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