title: Inactivation of microalgae in ballast water with pulse intense light treatment.
abstract: The exotic emission of ballast water has threatened the coastal ecological environment and people's health in many countries. This paper firstly introduces pulse intense light to treat ballast water. 99.9 ± 0.09% inactivation of Heterosigma akashiwo and 99.9 ± 0.16% inactivation of Pyramimonas sp. are observed under treatment conditions of 350 V pulse peak voltage, 15 Hz pulse frequency, 5 ms pulse width and 1.78 L/min flow rate. The energy consumption of the self-designed pulse intense light treatment system is about 2.90-5.14 times higher than that of the typical commercial UV ballast water treatment system. The results indicate that pulse intense light is an effective technique for ballast water treatment, while it is only a competitive one when drastic decreasing in energy consumption is accomplished.
authors.affiliation: College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, PR China. Electronic address: fengdaolun@aliyun.com.
authors.forename: Daolun
authors.initials: D
authors.lastname: Feng
authors.affiliation: College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, PR China.
authors.forename: Jidong
authors.initials: J
authors.lastname: Shi
authors.affiliation: College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, PR China.
authors.forename: Dan
authors.initials: D
authors.lastname: Sun
mesh_terms: D006801:Humans; D058865:Introduced Species; D008027:Light; D058086:Microalgae / Q000528:radiation effects*; D012767:Ships; D013242:Sterilization / Q000379:methods; D014867:Water; D018508:Water Purification / Q000379:methods*
chemical_list: D014867:Water
keywords: Ballast water; Energy consumption; Microalgae; Pulse intense light