Radioactive Waste Articles

In order to develop an effective and economical method for removing low concentration radioactive wastewater of uranium, the biomass of ‘CMCC(F)-98003’ Aspergillus niger was investigated in a batch system. The maximum uranium adsorption capacity of 12.5 mg g−1 was obtained at the initial uranium concentration of 0.75 mg L−1. The biosorption data on a biomass ...

Jan. 31, 2017

By IWA Publishing

NORM doesn’t sound like a big thing. But Naturally Occurring Radioactive Material might let the alarm bells ring. Everyone has heard of “radioactive material” and that sounds dangerous. However, most of this material is trapped deep in the ground beneath our feet. From there it reaches the surface, for example via the water cycle. Another possible pathway for NORM to reach the ...

Aug. 12, 2016

By econ industries GmbH

Cost effective and environmentally correct handling of radioactive wastewater Client: Dansk Dekommissionering, formerly known as Forskningscenter Risø. The Institution Dansk Dekommissionering was established in September 2003 with the purpose of taking over the responsibility for the nuclear facilities at the Risoe Research Centre. ...

Jun. 17, 2016

By Envotherm A/S

Agroindustrial wastes (rice husk, exhausted bark acacia, and tobacco dust) and foundry sands from the iron foundry industry were employed as a support source for photocatalysts. TiCl4 was used as the titanium precursor in the preparation of the supported photocatalysts. The solids were characterized by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), diffuse ...

Sep. 4, 2015

By IWA Publishing

ElectraTherm Commissions First Radiator with a PaybackORC Technology Replaces Engine’s Radiator, Offsets Radiator Capital Cost and Generates Electricity ORC Application on a Cummins KTA-50 Site: Reno, NV ElectraTherm partnered with the U.S. Department of Defense (DoD) to commission the first fully-integrated ...

Jul. 8, 2015

By ElectraTherm

Customers Include: Nuclear Power Plants: Perry, Ontario Power Generation, Peach Bottom, Savanna River, etc. Service/Product Providers: Alaron, RADeco, UniTech Applications Include: Decontamination of waxed concrete and painted diamond plate, with DFs of 100 percent in a single pass on surfaces with 100-200k dpm/100 cm2 ...

Jun. 29, 2015

By KT Chemicals, Inc.

Bacillus subtilis was first used to remove Sr(II) from low-level radioactive wastewater. Influence parameters, biosorption kinetics and biosorption equilibrium were investigated. The results showed that the maximum adsorption capacity of Sr(II) at over 2,000 mg g−1 by Bacillus subtilis was higher than for other biosorbents. At pH 6.3, Sr(II) concentration ...

Jun. 3, 2015

By IWA Publishing

The world community is seeking to move towards cleaner sources of energy for electricity generation to protect the environment. In addition to renewables, nuclear power and fossil fuel plants with carbon dioxide (CO2) capture and storage (CCS) are potential clean energy sources, if their wastes, i.e., radioactive material and CO2, are ...

Oct. 29, 2014

By Inderscience Publishers

This paper compares the policy, regulatory and institutional (PRI) settings of Radioactive Waste (RW) and Carbon Dioxide (CO2) disposal for selected countries. This comparison is premised on the following arguments: (a) the policy/political acceptance of nuclear power and coal power with Carbon Capture and Storage (CCS) technology to redress the climate change challenge will ...

Oct. 29, 2014

By Inderscience Publishers

Reliable and cost–effective monitoring is an important part of making geological repositories safe, effective, and acceptable for radioactive waste disposal and carbon dioxide (CO2) storage. The major objectives of monitoring should include the evolution of disposal systems compared to the baseline data of the undisturbed site, as well as the validation of the assumptions and ...

Oct. 29, 2014

By Inderscience Publishers

The public perception of ultimate disposal facilities for Radioactive Waste (RW) and carbon dioxide (CO2) is crucial for the selection, construction and operation of such sites. This paper presents a cross–national comparison of the public perceptions of ultimate disposal facilities for RW and CO2 in the Czech Republic, Germany and ...

Oct. 29, 2014

By Inderscience Publishers

This paper presents new research and new cost calculations for carbon dioxide (CO2) disposal in Cuba and Lithuania, as well as lessons from the comparative assessment of CO2 and high–level Radioactive Waste (RW) disposal costs in several countries. Nuclear power and CO2 Capture and Disposal (CCD) ...

Oct. 29, 2014

By Inderscience Publishers

Any geological disposal/storage facility must prove its safe performance prior to licensing, regardless of whether the compound is solid radioactive waste (RW) or gaseous carbon dioxide (CO2). The disposal/storage facility is considered safe if it meets the relevant safety standards and proves its reliable safe performance over defined timescales. This paper presents a ...

Oct. 29, 2014

By Inderscience Publishers

The spent nuclear fuel from the operation of nuclear power plants needs to be managed in a safe, responsible and effective way. Several possibilities exist to deal with the spent fuel. Within the so-called “open fuel cycle”, it is disposed of without further use. When “closing the fuel cycle”, the energetic component in the spent fuel, plutonium and uranium, is extracted ...

Sep. 30, 2014

By European Commission, Joint Research Centre

The uranium(VI) adsorption efficiency of non-living biomass of brown algae was evaluated in various adsorption experimental conditions. Several different sizes of biomass were prepared using pretreatment and surface-modification steps. The kinetics of uranium uptake were mainly dependent on the particle size of the prepared Laminaria japonica biosorbent. The optimal particle size, contact ...

Jul. 16, 2014

By IWA Publishing

This paper identifies the research paradigms in the area of radioactive waste management based on the technical reports retrieved from the International Nuclear Information System (INIS) from 1970 to 2012. The aim is to determine the volume of research output, the countries involved in the research; collaboration network has been studied at the micro level (individuals) and the macro level ...

Jun. 23, 2014

By Inderscience Publishers

Starting from a description of the current situation, which sees Italy outside the nuclear producers, the paper describes the different realities that are still working on nuclear energy and its different facets, illustrating Italian enterprises’ and trade unions’ role in a future perspective.Keywords: nuclear energy, nuclear disarmament, ethical energy, reconversion, Italy, Sogin, Italian ...

Jan. 9, 2014

By Inderscience Publishers

The purchasing and procurement policy of the Italian Sogin company, which is engaged in the reclamation of nuclear sites and management of radioactive waste, helps to ensure safety and quality during all work stages so as to protect workers, citizens and the environment.Keywords: Sogin, Nucleco, nuclear decommissioning, radioactive waste, waste management and disposal, qualification system, ...

Jan. 9, 2014

By Inderscience Publishers

After a short review of radioactive waste origins and inventories in Italy, the paper deals with the current major challenges that Italy has to cope with to pursue its radioactive waste sustainable management and safe disposal. Site restoration by Sogin of dismissed nuclear installations is part of the waste management challenge. The importance of assuring the highest levels of safety culture ...

Jan. 9, 2014

By Inderscience Publishers

To assess the movement of contaminants in the soil mass surrounded by near/subsurface waste repository, researchers have developed several mathematical and numerical modelling techniques. However, most of these techniques consider remolded state of soil mass, which fail to reproduce exact in situ conditions and also have used inactive salts as model contaminants. Hence, in order to model ...

Sep. 3, 2013

By Inderscience Publishers