Effect of electron beam irradiation on bacterial and Ascaris ova loads and volatile organic compounds in municipal sewage sludge

2015 ◽  
Vol 112 ◽  
pp. 6-12 ◽  
Author(s):  
Jean Engohang-Ndong ◽  
R.M. Uribe ◽  
Roger Gregory ◽  
Mahinda Gangoda ◽  
Mike G. Nickelsen ◽  
...  
2021 ◽  
Author(s):  
Roberto M. Uribe ◽  
Jean Engohang-Ndong

A review of the current status of sewage sludge decontamination using electron beam irradiation at industrial scale is presented. The chapter includes a historical development of the technology using both gamma and electron beam sources, a description of a facility using an electron accelerator, a discussion of the quality control techniques used to certify that satisfactory decontamination levels for safe use of treated sludge have been achieved, the effect of electron beam irradiation on the bacteria and virus present in a typical sample of municipal sewage sludge, and an analysis of the costs of decontaminating sewage sludge using electron beam irradiation compared to traditional and more routine technologies. Finally, the chapter concludes by emphasizing on the fact that electron accelerators described in this chapter are capable to decontaminate a typical municipal sewage sludge at competitive costs which are shown to be comparable and/or lower than routinely used technologies to achieve class A biosolids by the Environmental Protection Agency standards.


2012 ◽  
Vol 81 (8) ◽  
pp. 1084-1087 ◽  
Author(s):  
Hyun-Pa Song ◽  
Sung-Lye Shim ◽  
Sun-Im Lee ◽  
Dong-Ho Kim ◽  
Joong-Ho Kwon ◽  
...  

Author(s):  
Teruyuki Hakoda ◽  
Mingde Yang ◽  
Koichi Hirota ◽  
Shoji Hashimoto

AbstractRadiation decomposition and aerosol formation of various volatile organic compounds (VOCs) were examined to get information on a treatment of industrial off-gas. Model gases, air containing aromatic VOCs, chloroethenes and 1,2-dichloroethane, were sealed in batch reactors and irradiated with electron beam (EB) and gamma ray. For aromatic VOCs, G-values of decomposition in gamma ray irradiation were about 1.5 times larger than those in EB irradiation. The ratios of aerosol formation to decomposed aromatic VOCs were ranged from 30 to 66% on the basis of carbon. For chloroethenes except monochloroethylene, G-values of decomposition were 6 to 45 times larger than those of aromatic VOCs and the irradiated product was mainly gaseous compound. The G-values of decomposition in EB irradiation increased markedly with increase of chlorine atom in a molecule, while those in gamma ray irradiation were almost kept constant.


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