UVC-Thermal Coupled Digestion without Oxidant for the Detection of Total Phosphorus

Long Li; Chao Bian; Jian Hua Tong; Heng Li; Shan Hong Xia

doi:10.4028/www.scientific.net/KEM.645-646.847

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 645-646UVC-Thermal Coupled Digestion without Oxidant for...

UVC-Thermal Coupled Digestion without Oxidant for the Detection of Total Phosphorus

Abstract:

In this paper, a catalyst-free and non-oxidant digestion method based on UVC and thermal coupled mechanism was developed for the digestion of total phosphorus (TP). Two kinds of digestion devices, “hamburg-type” and “screw-type”, were designed and compared to get higher digestion efficiency. Both of the two devices contain a quartz tube, UV light tubes, a flexible heating unit, UV light reflecting layer, and a temperature meter, etc. UVC light with the wavelength of 254nm is used to produce hydroxyl radicals to degrade TP into phosphate in water. Compared with the “hamburg-type” digestion device, the “screw-type” device exhibited a higher digestion rate. At the condition of 1 hour and 80°C, the digestion rate of 1mg/L (by weight of P) water sample can come to 96% by using the “screw-type” device.

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Periodical:

Key Engineering Materials (Volumes 645-646)

Pages:

847-852

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.645-646.847

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Online since:

May 2015

Authors:

Long Li, Chao Bian*, Jian Hua Tong, Heng Li, Shan Hong Xia

Keywords:

Oxidant-Free, Total Phosphorus (TP) Digestion, UVC

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