A 3-step chemiluminescence method for chemical oxygen demand measurement with dichromate oxidizing reagent

Hue, Do Thi Kim; Shiba, Takumi; Maeda, Yasuhiro; Takenaka, Norimichi

doi:10.1039/c7ay01652b

Cited by 6 publications

(4 citation statements)

References 36 publications

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“…The change in chemical oxygen demand (COD) of the anode effluent is measured using the standard potassium dichromate method. 31 The coulombic efficiency (CE), which measures the conversion efficiency of chemical energy into electrical energy, is calculated as the ratio of the actual charge produced by the MFC to the theoretical charge produced.…”

Section: Methodsmentioning

confidence: 99%

Natural tea polyphenol functionalized graphene anode for simultaneous power production and degradation of methyl orange dye in microbial fuel cells

Guo,

Fu,

Wang

et al. 2024

RSC Adv.

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Section: Methodsmentioning

confidence: 99%

Natural tea polyphenol functionalized graphene anode for simultaneous power production and degradation of methyl orange dye in microbial fuel cells

Guo,

Fu,

Wang

et al. 2024

RSC Adv.

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“…Usually, it is estimated by measurement of Chemical Oxygen Demand(COD) in a sample, which is traditionally measured by incubating it in a warm environment. Currently, more compact sensors are available for COD measurement [46], and COD measurements on a large scale are possible [47]. However, COD can also be estimated using factors such as the colour or transparency of the sample.…”

Section: Taste Sensingmentioning

confidence: 99%

Theoretical Framework for Human-Like Robotic Taste with Reference to Nutritional Needs

Sochacki,

Abdulali,

Cheke

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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This paper contains a theoretical framework for an intelligent robot that can feed itself with organic matter and learns to like and want certain foods. Furthermore, being tied to the onboard generation of power, the robot’s learning is grounded to physical requirements that need to be met for continued robot operation. We posit a system wherein the electrical power is generated by a microbial fuel cell(MFC), and the food value can be assessed by measuring the current generated. Interestingly, the MFC requires feed similar in many parameters to food preferred by most people with respect to parameters like salinity or pH. This property is theorized to be a good start for teaching a robotic chef human preferences. We also propose a circuit that injects additional current, simulating social cues for some foods, and effectively resulting in learning an acquired taste.

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“…A sampling rate of 8 h −1 was reported for very sensitive determinations with an LOD of 50 ng L −1 . Chemiluminescence detection, based on the principle of the permanganate method, was used for the determination of chemical oxygen demand in an FIA system [97], as well as for the very sensitive determination of Hg(II) in surface-and tap waters [98]. In the latter example, an immunoassay based on the use of resin beads, enzymatic amplification, and a novel monoclonal antibody with strong affinity recognition and high specificity for Hg(II), were used.…”

Section: Subject 1st Author Year Of Publication Referencementioning

confidence: 99%

Flow-Injection Methods in Water Analysis—Recent Developments

Trojanowicz

Pyszynska

2022

Molecules

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Widespread demand for the analysis and control of water quality and supply for human activity and ecosystem sustainability has necessitated the continuous improvement of water analysis methods in terms of their reliability, efficiency, and costs. To satisfy these requirements, flow-injection analysis using different detection methods has successfully been developed in recent decades. This review, based on about 100 original research papers, presents the achievements in this field over the past ten years. Various methodologies for establishing flow-injection measurements are reviewed, together with microfluidics and portable systems. The developed applications mostly concern not only the determination of inorganic analytes but also the speciation analysis of different elements, and the determination of several total indices of water quality. Examples of the determination of organic residues (e.g., pesticides, phenolic compounds, and surfactants) in natural surface waters, seawater, groundwater, and drinking water have also been identified. Usually, changes in the format of manual procedures for flow-injection determination results in the improvement of various operational parameters, such as the limits of detection, the sampling rate, or selectivity in different matrices.

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A 3-step chemiluminescence method for chemical oxygen demand measurement with dichromate oxidizing reagent

Abstract: In this study, the use of potassium dichromate as an oxidizing reagent in the 3-step chemiluminescence (CL) chemical oxygen demand (COD) method, based on the principle of the permanganate COD (CODMn) method (JIS K0102), was developed (3-step CL CODCr method).

Cited by 6 publications

References 36 publications

Natural tea polyphenol functionalized graphene anode for simultaneous power production and degradation of methyl orange dye in microbial fuel cells

Natural tea polyphenol functionalized graphene anode for simultaneous power production and degradation of methyl orange dye in microbial fuel cells

Theoretical Framework for Human-Like Robotic Taste with Reference to Nutritional Needs

Flow-Injection Methods in Water Analysis—Recent Developments

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