Radiation Safety Articles

578 Results found
  • Category: Health & Safety ×

  • Subcategory: Radiation Safety ×

Biodiesel from wastewater: lipid production in high rate algal pond receiving disinfected effluent

by IWA Publishing  (Apr. 27, 2015)

The production of different species of microalgae in consortium with other micro-organisms from wastewaters may represent an alternative process, to reduce the costs, for obtaining biofuels. The aim of this study was to evaluate the influence of pre-ultraviolet disinfection (UV) in the production of lipids from biomass produced in high rate ...

New Guidance Helps LM Manage Institutional Controls

by EarthSoft, Inc  (Apr. 21, 2015)

The official Guidance for Developing and Implementing Institutional Controls for Long-Term Surveillance and Maintenance at DOE Legacy Management Sites, was issued in January as a supplemental directive within the U.S. Department of Energy (DOE) Office of Legacy Management (LM), to reinforce our commitment to using institutional controls (IC) ...

Comparison of ultraviolet light emitting diodes with traditional UV for greywater disinfection

by IWA Publishing  (Mar. 13, 2015)

The current technological status of ultraviolet light emitting diodes (UV-LEDs) has reached a point where small-scale ultraviolet (UV) water disinfection applications, that is, for greywater reuse appear increasingly promising. This study compares the germicidal and economical aspects of UV-LEDs with traditional UV. Pure cultures and ...

Experimental determination of dose uniformity in the CDTN gamma irradiator

by Inderscience Publishers  (Mar. 6, 2015)

This paper describes an experimental study of dose uniformity within a container used for products irradiation, in the gamma irradiation facility at Nuclear Technology Development Center (CDTN). The CDTN is a research institute of the National Nuclear Energy Commission (CNEN), Brazil. Polymethylmethacrylate (PMMA) dosimeters were used in order to ...

Responses of wheat (Triticum aestivum) and turnip (Brassica rapa) to the combined exposure of carbaryl and ultraviolet radiation

by John Wiley & Sons, Ltd.  (Mar. 5, 2015)

The increase of ultraviolet radiation reaching the Earth's surface due to the increase of ozone layer depletion have affected crop production systems, and in combination with pesticides used in agricultural activities can lead to greater risks to the environment. The impact of ultraviolet radiation and carbaryl singly and in combination on ...

Disinfection of an advanced primary effluent using peracetic acid or ultraviolet radiation for its reuse in public services

by IWA Publishing  (Feb. 27, 2015)

The disinfection of a continuous flow of an effluent from an advanced primary treatment (coagulation-flocculation-sedimentation) with or without posterior filtration, using either peracetic acid (PAA) or ultraviolet (UV) radiation was studied. We aimed to obtain bacteriological quality to comply with the microbiological standard established in ...

Impact of sunlight/dark storage on natural spring water bottled in polyethylene terephthalate

by IWA Publishing  (Feb. 23, 2015)

The effect of two environmental variables, ultraviolet radiation and external air temperature, on polyethylene terephthalate (PET) bottled water was investigated over 100 days. The high pressure liquid chromatography results showed the migration of carbonyl compounds (acetaldehyde, formaldehyde and acetone) from PET bottles into water over 3 ...

Design, control and performance analysis of a standalone solar–PV energy generating system

by Inderscience Publishers  (Feb. 20, 2015)

This paper presents the design, control and performance of a low power standalone solar–photovoltaic (PV) energy generating system. The system includes a maximum power point tracking (MPPT) controller along with a full bridge DC–DC converter, an energy storage system and a voltage source inverter (VSI). The detailed design and modelling of the ...

Last tango for nuclear?

by Ensia  (Jan. 30, 2015)

The U.S. nuclear power industry’s three-step: Revival, long goodbye or state-aided life support. As pressure to reduce climate-changing emissions grows, nuclear power is drawing growing attention — for better or worse. In this piece, the first of a series of three being published at Environmental Health News with funding ...

Nuclear waste storage and environmental intergenerational externalities

by Inderscience Publishers  (Jan. 7, 2015)

This article analyses the long–term consequences of nuclear waste storage within a general equilibrium framework. The objective is to determine the conditions for which the storage of waste, and thus the transfer of externalities towards the future, can be optimal. These conditions could explain the implementation of intergenerational ...

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