scholarly journals Inactivation of bacteria in sewage sludge by ionizing radiation, heat, and thermoradiation

1976 ◽  
Author(s):  
J. Brandon ◽  
S. Langley
Keyword(s):  
Sewage Sludge ◽  
Ionizing Radiation ◽  
Radiation Heat ◽  
Inactivation Of Bacteria

Inactivation of bacteria in sewage sludge by gamma radiation

1987 ◽  
Vol 43 (4) ◽  
pp. 281-290 ◽  
Author(s):  
Gagan A. Pandya ◽  
Smita Kapila ◽  
Vishwas B. Kelkar ◽  
Shobha Negi ◽  
Vinod V. Modi
Keyword(s):  
Sewage Sludge ◽  
Gamma Radiation ◽  
Inactivation Of Bacteria

scholarly journals APPLICATION OF IONIZING RADIATION TO THE TREATMENT OF WASTE WATERS AND SEWAGE SLUDGE.

1969 ◽  
Author(s):  
D. Compton ◽  
S. Black ◽  
F. Lieurance ◽  
W. Whittemore
Keyword(s):  
Sewage Sludge ◽  
Ionizing Radiation ◽  
Waste Waters

scholarly journals Microbiological Evaluation of the Effectiveness of Sewage Sludge Sanitization with Solar Drying Technology

2012 ◽  
Vol 2012 ◽  
pp. 1-11
Author(s):  
Zbigniew Paluszak ◽  
Krzysztof Skowron ◽  
Małgorzata Sypuła ◽  
Karolina Jadwiga Skowron
Keyword(s):  
Sewage Sludge ◽  
Elimination Rate ◽  
Regression Equations ◽  
Solar Drying ◽  
Drying Method ◽  
Drying Process ◽  
E Coli ◽  
Drying Technology ◽  
Dried Sludge ◽  
Inactivation Of Bacteria

The aim of study was to estimate the sanitization effectiveness of the sludge solar drying process carried out on technical scale in Poland based on the inactivation of bacteria and parasite eggs. Sewage sludge samples inoculated withEscherichia coli,SalmonellaSenftenberg W775and enterococci and perlon bags containingAscaris suumeggs were placed inside the carriers fixed in the dried sludge pile and on the shovels and frame of the sludge turner. The number of reisolated microorganisms was determined with MPN method and the percentage of invasiveA. suumeggs—with the microscope counting. On the basis of regression equations, the theoretical survivability and elimination rate of bacteria and parasite eggs were calculated. Experiment showed low hygienization efficiency of solar drying method. The theoretical survival time was 46–104 days in summer and 90–98 days in winter forS.Senftenberg W775and, respectively 42–55 and 71–148 days forE. coli, depending on the carriers location. Enterococci were able to survive for 52–168 days in summer and in winter its number increased. The decrease in the percentage of invasiveA. suumeggs was almost not observed. Results indicated that solar drying is a technology, which does not guarantee biosafety of product.

scholarly journals ‘Zero energy’ electron beam technology for sludge hygienization

Nukleonika ◽  
2019 ◽  
Vol 64 (2) ◽  
pp. 55-63 ◽  
Author(s):  
Andrzej G. Chmielewski ◽  
Marcin Sudlitz
Keyword(s):  
Electron Beam ◽  
Sewage Sludge ◽  
Ionizing Radiation ◽  
Pathogenic Bacteria ◽  
Wastewater Treatment Plants ◽  
Organic Matter Content ◽  
Electric Energy ◽  
Matter Content ◽  
Biogas Plant ◽  
Zero Energy

Abstract Large quantity of sewage sludge originating from wastewater treatment plants is becoming a growing problem from environmental and human health points of view. One of the ways to use sewage sludge is agricultural purpose due to its nutrients and organic matter content, but the condition is that it should be deprived of pathogenic bacteria and parasite egg contamination. Application of ionizing radiation to hygienize sewage sludge can make it appropriate for agricultural use. The process does not require addition of chemicals to sludge; it is environmentally friendly and effective in removal of biological threats. In the past, successful attempts of sewage sludge treatment using ionizing radiation were made. Pilot plants and commercial ones proved that pathogens can be easily removed from sewage sludge by ionizing radiation. The concept of ‘zero energy’ biogas plant is based on the construction of a complex system consisting of biogas plant and electron accelerator in the biofertilizer manufacturing line. Digestate originating from the methane fermentation of sewage sludge is irradiated to remove all pathogens using electron beam from an accelerator powered by electric energy obtained from burning biogas in a cogenerator. The product is a high-quality, biologically safe fertilizer.

Radiation-induced surface decomposition

1983 ◽  
Vol 41 ◽  
pp. 368-369
Author(s):  
M. L. Knotek
Keyword(s):  
Ionizing Radiation ◽  
Atomic Structure ◽  
Chemical Bonding ◽  
Neutral Species ◽  
Radiation Induced ◽  
Physical And Chemical ◽  
Surface Decomposition ◽  
The Relationship ◽  
Electron And Photon ◽  
Surface Bond

Modern surface analysis is based largely upon the use of ionizing radiation to probe the electronic and atomic structure of the surfaces physical and chemical makeup. In many of these studies the ionizing radiation used as the primary probe is found to induce changes in the structure and makeup of the surface, especially when electrons are employed. A number of techniques employ the phenomenon of radiation induced desorption as a means of probing the nature of the surface bond. These include Electron- and Photon-Stimulated Desorption (ESD and PSD) which measure desorbed ionic and neutral species as they leave the surface after the surface has been excited by some incident ionizing particle. There has recently been a great deal of activity in determining the relationship between the nature of chemical bonding and its susceptibility to radiation damage.

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