Efficacy of Electrochemical Treatment Method in Removing Pollutants from Restaurant Wastewater

Ojukwu, Paul Ngozi; Oladepo, Kamar Taiwo

doi:10.9734/jsrr/2017/35219

Cited by 3 publications

(1 citation statement)

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“…WW pH spans between 5-9. 37,39 It must be acknowledged that the phosphate concentration in soil solution ranges from 1.05 × 10 −5 M in very fertile soil to 1.05 × 10 −8 M in very infertile soil. 32 Due to liming and aluminum sulfate applications to adjust soil pH for better yield, 32 the soil pH level is never constant at one value.…”

Section: Application Of Co Phosphate Ise In Environmental Systemsmentioning

confidence: 99%

Review—Potentiometric Determination of Phosphate Using Cobalt: A Review

Zeitoun

Biswas

2020

J. Electrochem. Soc.

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Inorganic phosphorus (orthophosphate) determination is crucial within environmental applications. Conventional accredited measurement methods of orthophosphate provide accurate measurements for a limited number of samples due to cost, time, and labor involved with laboratory analysis and are insufficient to characterize phosphate variability within environmental applications. Precise electrochemical sensing has the potential to provide accurate phosphate measurements and has the advantage of being inexpensive to produce and portable. Cobalt is a robust metal that has shown a unique selectivity towards phosphate in potentiometric sensors. In this manuscript, we reviewed the cobalt phosphate ion-selective electrodes with cobalt matrices in the form of pure metal, microelectrode, thin-film, and heterogeneous metal membrane in building integrated probes for determining phosphate concentrations in aqueous solutions. We reviewed different proposals of the cobalt-phosphate chemical reactions on the electrode surface, the factors affecting the stability of the phosphate measurement, and the success stories in the form of the limit of detection, linear range, and sensitivity. With strong progress in recent decades, we restricted ourselves at the time between 1995 and 2018. We discussed future opportunities of cobalt sensors towards more reliable phosphate sensing using novel approaches like cobalt alloys, three in one cobalt phosphate sensors, and external interference elimination methods.

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Section: Application Of Co Phosphate Ise In Environmental Systemsmentioning

confidence: 99%

Review—Potentiometric Determination of Phosphate Using Cobalt: A Review

Zeitoun

Biswas

2020

J. Electrochem. Soc.

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Electrochemical Mechanisms in Potentiometric Phosphate Sensing Using Pure Cobalt, Molybdenum and their Alloy for Environmental Applications

Zeitoun

Biswas

2020

Electroanalysis

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Phosphorus (P) is ubiquitous in the environment, but its measurement is costly and time‐consuming. Sensor‐based measurement shows potential, but selection of right metal remains the major challenge due to strong P species dependence on pH. This study examined the feasibility of pure cobalt, molybdenum, and their electrodeposited alloy, Co63Mo42 (wt %), as phosphate sensors. The cobalt, molybdenum and alloy exhibited mixed potential, Nernst potential, and oxidation‐reduction (red‐ox) mechanisms, respectively. Alloy showed good selectivity over a wide pH range, but high limit of detection and long response time (8–14 minutes). Yet, alloy provides a new opportunity for improving electrochemical phosphate sensors.

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