Last edited by Samuzahn
Monday, May 11, 2020 | History

3 edition of Trace organic removal by photochemical oxidation = found in the catalog.

Trace organic removal by photochemical oxidation =

Supriya Kumar Sen Gupta

Trace organic removal by photochemical oxidation =

Elimination des substances organiques à l"état de trace par oxydation photochimique

by Supriya Kumar Sen Gupta

  • 289 Want to read
  • 12 Currently reading

Published by Waste Processing Technology, Chalk River Laboratories in Chalk River, Ont .
Written in English

    Subjects:
  • Nuclear industry -- Waste disposal.,
  • Sewage -- Purification -- Oxidation

  • Edition Notes

    Other titlesElimination des substances organiques à l"état de trace par oxydation photochimique
    StatementS.K. Sen Gupta, R.G. Peori, S.L. Wickware.
    SeriesAECL -- 11269, AECL (Series) -- 11269.
    ContributionsPeori, R. G., Wickware, S. L., Atomic Energy of Canada Limited., Chalk River Laboratories. Waste Processing Technology Branch.
    Classifications
    LC ClassificationsTD758 .S46 1995
    The Physical Object
    Pagination8 p. :
    ID Numbers
    Open LibraryOL20657602M
    ISBN 100660160463
    OCLC/WorldCa35367467

      This technology of Advanced oxidation process using photochemical oxidation has the proven capability of destroying a majority of the non- biodegradable organic . This work studied the destruction of various M–EDTA complexes and trace organic pollutants in treated reusable wastewater under advanced oxidation using UV irradiation and ozonation. Effect of dosage of hydrogen peroxide and acidity of reaction matrices on oxidation efficiencies were by:

    This note covers the following topics: photochemistry, kinetics, and thermodynamics important to the chemistry of the atmosphere, stratospheric ozone depletion, oxidation chemistry of the troposphere, photochemical smog, aerosol chemistry, and sources and sinks of . Supplementary information: Proposing sequential biofiltration-based hybrid systems for the enhanced removal of trace organic chemicals from wastewater treatment plant effluents 5 Literature Benner, J., Salhi, E., Ternes, T., von Gunten, U., Ozonation of reverse osmosis concentrate: Kinetics and efficiency of beta blocker oxidation.

    Book Jun VUV/UV/Chlorine as an Enhanced Advanced Oxidation Process for Organic Pollutant Removal from Water: Assessment with a Novel Mini-Fluidic VUV/UV Photoreaction System (MVPS). Photochemical Formation of Hydroxyl Radical by Constituents of Natural WatersCited by:


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Trace organic removal by photochemical oxidation = by Supriya Kumar Sen Gupta Download PDF EPUB FB2

Get this from a library. Trace organic removal by photochemical oxidation. [Santosh Kumar Sen Gupta; R G Peori; S L Wickware; Chalk River Nuclear Laboratories.

Waste Processing Technology Branch.; Atomic Energy of Canada Limited.]. CHAPTER OXIDIZING POWER OF THE TROPOSPHERE. The atmosphere is an oxidizing medium.

Many environmentally important trace gases are removed from the atmosphere mainly by oxidation: greenhouse gases such as CH4, toxic combustion gases such as CO, agents for stratospheric O3 depletion such as HCFCs, and others.

The text also underscores the varying methods in removing trace elements in organic compounds. The elements include zinc, copper, silver, gold, lead, germanium, titanium, arsenic, bismuth, and vanadium. The book also describes wet digestion methods and dry ashing procedures in the removal of trace elements in organic matters.

PDF | OnMengkai Li and others published Trace Organic Pollutant Removal by VUV/UV/chlorine Process: Feasibility Investigation for Drinking Water Treatment on a. The bottoms of shallow, open-water wetland cells are rapidly colonized by a biomat consisting of an assemblage of photosynthetic and heterotrophic microorganisms.

To assess the contribution of biotransformation in this biomat to the overall attenuation of trace organic contaminants, transformation rates of test compounds measured in microcosms were compared with attenuation rates measured in Cited by: Trace amounts of fenofibrate acid sensitize the photodegradation of bezafibrate in effluents: Mechanisms, degradation pathways, and toxicity evaluation.

Chemosphere, DOI: /phere Xi-Zhi Niu, Jean-Philippe Croué. Photochemical production of hydroxyl radical from algal organic by:   In this chapter, an overview of Photochemical Advanced Oxidation Technologies (PAOTs) is given, together with recent relevant literature examples and references.

Short-UV and VUV photolysis, UV/H 2 O 2, UV/O 3, UV/O 3 /H 2 O 2, photo-Fenton and iron-based technologies, photo-ferrioxalate and UV/periodate, are exposed, together with a brief. [7] This paper presents evidence that photochemical oxidation significantly alters the molecular‐level composition of organic aerosol in the eastern United States, and by extension other areas affected by regional transport.

First, basic calculations of the oxidation lifetime as a function of particle size are compared to the age of an Cited by:   The concentrations of most tropospheric pollutants and trace gases are kept in check by their reactions with hydroxyl radicals (OH).

OH is a short-lived, highly reactive species that is produced in the atmosphere by photochemical processes, and regenerated in the chain of chemical reactions that follows the oxidative destruction of those molecules. These regeneration mechanisms were thought to Cited by: light, undergo photochemical oxidation, producing a photochemical smog that is environmentally hazardous.

Regulation to control VOCs emission Regulations on controlling organic vapour pollutants in air have been issued world-wide. In the ambient air quality standards produced by the US Environmental Protection Agency, the maximum 3-hour concentrationFile Size: KB.

In this review, an overview is provided of the photochemical reaction parameters (quantum yield, molar absorption, OH radical reaction rate constant) of more than organic micropollutants. These parameters allow for a prediction of organic contaminant removal by UV advanced oxidation by: Trace Organic Contaminants Removal by Combined Processes for Wastewater Reuse Faisal I.

Hai a*, Luong N. Nguyen a, Long D. Nghiem a, Bao-Qiang Liao b, Ismail Koyuncu c, and William E. Price d. photochemical, sonochemical and electrochemical reactions have been performed for the degradation and destruction of organic pollutants in aquatic media and the treatment of watewater.

(photoSome selected studies that have employed AOPs for the removal of pesticides from water and wastewater are presented in Table 1. Figure 1. The photochemical removal of organic layer DOC used by microbes was consistent with lower microbial respiration and especially production and growth efficiency of light-exposed organic layer DOC compared to dark-controls (Fig.

2 and Supplementary Table 2).Cited by: The photochemical formation of hydroxyl radical (HO•) from effluent organic matter (EfOM) depends upon the chemical properties of this heterogeneous mixture.

In this study, two EfOM samples collected from wastewater treatment plants (WWTP A and B) were fractionated by both hydrophobicity (bulk and non-humic) and apparent molecular weight (AMW).Cited by: The photochemical formation of hydroxyl radical (HO•) from effluent organic matter (EfOM) was evaluated using three bulk wastewater samples collected at different treatment facilities under simulated sunlight.

For the samples studied, the formation rates of HO•(RHO•) were obtained from the formation rate of phenol following the hydroxylation of by: Request PDF | OnKlaas V.K.M. Schoutteten and others published Effect of oxidation and catalytic reduction of trace organic contaminants on their activated carbon adsorption | Find.

Plants act as both global sources and sinks of highly reactive volatile organic compounds (VOCs). Models typically treat the uptake and degradation of these compounds as if they are mostly unreactive, like other more commonly studied biogenic gases such as ozone.

A study by Karl et al. [][1], published online 21 October) suggests that VOCs may be more reactive than by: The results indicate that TOC (optical-based measurement), UVA or UVT (UV absorbance or transmittance at nm), and total fluorescence can all be used as suitable on-line organic surrogate parameters to predict the attenuation of TOrCs.

Furthermore, the automated real-time monitoring via on-line surrogate sensors and equipped with the developed degradation profiles between sensor response and a group of TOrCs removal Cited by: To respond to concerns associated with wastewater-derived contaminants water utilities are looking for new approaches for monitoring trace organic chemicals in conventional and advanced water treatment processes.

This study examines the use of a combination of surrogate parameters and indicator compounds tailored to monitor the removal efficiency of advanced oxidation processes employed by Cited by:.

Glyoxal, HC(O)CHO, is an important trace component of the Earth's atmosphere, formed in biomass burning and in the photooxidation of volatile organic compounds (VOCs) like isoprene and aromatic hydrocarbons.

The HC(O)CO free radical is the primary product of .In typical PR, the removal of TOrCs below their regulated limits is achieved through an advanced water treatment process typically comprised of reverse osmosis (RO) treatment and an advanced oxidation process (AOP) such as ultraviolet (UV) irradiation with hydrogen peroxide (H 2O 2) (Poussade et al.,Drewes and Khan, ).Cited by: 5.Removal of Indoor Volatile Organic Compounds via Photocatalytic Oxidation: A Short Review and Prospect Formaldehyde is an intermediate of atmospheric photochemical oxidation and emission product from fossil fuel combustion.

The primary sources of formaldehyde include both anthropogenic and natural sources as well. Even though trace Cited by: