Figures-of-merit for the technical development and application of advanced oxidation technologies for both electric- and solar-driven systems

James R. Bolton, Keith G. Bircher, William Tumas, Chadwick A. Tolman

Research output: Contribution to journalArticle

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Abstract

Advanced oxidation technologies (AOTs), which involve the in situ generation of highly potent chemical oxidants, such as the hydroxyl radical (OH), have emerged as an important class of technologies for accelerating the oxidation (and hence removal) of a wide range of organic contaminants in polluted water and air. In this report, standard figures-of-merit are proposed for the comparison and evaluation of these waste treatment technologies. These figures-of-merit are based on electric-energy consumption (for electric-energy-driven systems) or collector area (for solar-energy-driven systems). They fit within two phenomenological kinetic order regimes: 1) for high contaminant concentrations (electric energy per mass, EEM, or collector area per mass, ACM) and 2) for low concentrations (electric energy per order of magnitude, EEO, or collector area per order of magnitude, ACO). Furthermore, a simple understanding of the overall kinetic behavior of organic contaminant removal in a waste stream (i.e., whether zero- or first-order) is shown to be necessary for the description of meaningful electric- or solar-energy efficiencies. These standard figures-of-merit provide a direct link to the electric- or solar-energy efficiency (lower values mean higher efficiency) of an advanced oxidation technology, independent of the nature of the system, and therefore allow for direct comparison of widely disparate AOTs. These figures-of-merit are also shown to be inversely proportional to fundamental efficiency factors, such as the lamp efficiency (for electrical systems), the fraction of the emitted light that is absorbed in the aqueous solution, and the quantum yield of generation of active radicals.

Original languageEnglish
Pages (from-to)627-637
Number of pages11
JournalPure and Applied Chemistry
Volume73
Issue number4
Publication statusPublished - 2001

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Solar system
Oxidation
Solar energy
Impurities
Energy efficiency
Kinetics
Waste treatment
Quantum yield
Electric lamps
Oxidants
Hydroxyl Radical
Energy utilization
Water
Air

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Figures-of-merit for the technical development and application of advanced oxidation technologies for both electric- and solar-driven systems. / Bolton, James R.; Bircher, Keith G.; Tumas, William; Tolman, Chadwick A.

In: Pure and Applied Chemistry, Vol. 73, No. 4, 2001, p. 627-637.

Research output: Contribution to journalArticle

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