[en] Power beams, namely plasma, laser and electron beams are the new enabling technologies for creating a clean environment. The extremely large energy densities and abundance of activated species in the processing medium provide the necessary pathways for realizing processing strategies that are more eco-friendly than the conventional techniques. The use of electron beam for radiation processing technology, such as for cleaning of flue gases, industrial wastewater treatment and sludge provides an economically, technologically and environmentally acceptable method. In process of electron beam treatment of industrial wastewater, partial decomposition of pollutants as well as transformation of pollutant molecules take place resulting in improvement in subsequent purification stages. The potential applications of laser based system for environmental issues ranges from paint removal from walls in nuclear facilities to cleaning of vulcanizing moulds, removal of grease layers, de-scaling of weld seams to decontamination. The advantage of wastage minimization, remote operation and transportability are key in the applications of laser technology. The contributory papers of the present symposium cover a wide spectrum of topics including novel plasma devices and processes for pollution control, waste treatment, synthesis of nano materials for environmental applications, computer modeling of processes, electron beam curing of surfaces, new laser systems for environmental monitoring and clean processing. Papers relevant to INIS are indexed separately