Removal mechanisms of phosphate from water by calcium silicate hydrate supported on hydrochar derived from microwave-assisted hydrothermal treatment

Guo, Ziwen; Li, Kewei; Jiang, Luhua; Ran, Yupeng; Sarkodie, Emmanuel Konadu; Yang, Jianhong; Shi, Jiaxin; Liu, Shaobo; Li, Meifang; Li, Jiang; Liu, Hongwei; Liang, Yili; Yin, Huaqun; Liu, Xueduan

doi:10.1016/j.eti.2022.102942

Cited by 10 publications

(2 citation statements)

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“…The samples contain phosphate with a relatively high concentration. This condition can occur due to the accumulation of various phosphate sources, especially from feed and aquatic waste [4]. Excessive phosphate concentration in the water environment can lead to the proliferation of algae and aquatic plants, reducing light intensity and dissolved oxygen levels, which can impact detrimental aquatic life [1][2][3].…”

Section: Analysis Of Sample Phosphatementioning

confidence: 99%

“…Eutrophication has a detrimental effect on aquatic life [1][2][3]. Phosphate constantly accumulates in the water environment due to the discharge from various sources of phosphate, such as industrial uses, domestic sewage of households, and agriculture, with excessive use of fertilizers and animal wastes [4]. Thus, it is necessary to discover user-friendly and cost-effective analytical methods to analyze phosphate concentration in water.…”

Section: Introductionmentioning

confidence: 99%

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Cyclic Voltammetry Method for Analysis of Phosphate Concentration in Water

Agustin,

Setiarso

2024

J. Pijar.MIPA

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Phosphate is a nontoxic element but a limiting element for productivity. Several methods have been established to analyze the phosphate concentration in water. This study aims to analyze phosphate concentration in water using the voltammetry method using cyclic voltammetry. Cyclic voltammetry is an electroanalytical method that measures the current outcome of oxidation-reduction reactions in response to the potential. The current outcome is directly proportional to the phosphate concentration in the solution. The calibration curve was formed from the KH2PO4 standard solution using concentrations of 0.1 mg/L, 0.2 mg/L, 0.4 mg/L, 0.8 mg/L, and 1.6 mg/L. The voltammogram showed that the analyte does not have an anode peak current (Ipa), which means that the analyte solution did not have an oxidation reaction, so the cathode peak current (Ipc) value was used. Based on the calibration curve, the linear regression graph with a straight-line equation is y = -0,00000645632x - 0,000208737 with R2 of 0,99737. Meanwhile, this cyclic voltammetry method was validated by calculating the LOD and LOQ values; the results are 0.1034 mg/L and 0.3134 mg/L, respectively. Hence, based on the analysis of phosphate concentration in water samples, this method works satisfactorily and is suitable for routine analysis because of its advantages.

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