%T Laboratory tests on heat treatment of ballast water using engine waste heat
%L scholars20494
%D 2018
%O Cited by: 7
%X Waste heat recovery from shipboard machineries could be a potential source for heat treatment of ballast water. Similar to a shipboard schematic arrangement, a laboratory-scale engine-heat exchanger set-up harvesting waste heat from jacket water and exhaust gases was erected to test the level of species’ mortalities. Mortalities were also assessed under experimental conditions for cultured and natural plankton communities at laboratory level. Effect of pump impellers on species’ mortalities were also tested. Exposures between 60°C and 70°C for 60 sec resulted in 80–100 mortalities. Mortalities due to pump impeller effects were observed in the range of 70–100 for zooplankton. On the laboratory-scale arrangement, >95 mortalities of phytoplankton, zooplankton and bacteria were recorded. It was demonstrated that the temperature of tropical sea waters used as secondary coolant can be raised to cause species’ mortalities, employing engine exhaust gases. The results also indicated that pump impeller effects will enhance species’ mortalities. The limitations of the shipboard application of this method would be the large ballast volumes, flow rates and time for treatment. © 2017 Informa UK Limited, trading as Taylor & Francis Group.
%J Environmental Technology (United Kingdom)
%P 1102 – 1114
%R 10.1080/09593330.2017.1321691
%K Animals; Hot Temperature; Plankton; Ships; Waste Water; Water; Water Purification; Zooplankton; Ballast (railroad track); Exhaust gases; Heat treatment; Impellers; Laboratories; Plankton; Pumps; Seawater; Ships; Thermal effects; Waste heat; Waste heat utilization; Water treatment; water; Ballast water; Engine waste heats; Experimental conditions; Plankton communities; Potential sources; Pump impeller; Schematic arrangements; Shipboard machinery; bacterium; ballast water; engine; heat transfer; heating; laboratory method; mortality; plankton; recovery; thermal alteration; waste; zooplankton; Article; Chaetoceros; Chlorella; energy recovery; Escherichia coli; exhaust gas; flow rate; heat treatment; laboratory test; nonhuman; phytoplankton; Vibrio; zooplankton; animal; heat; plankton; ship; waste water; water management; zooplankton; Waste treatment
%N 9
%V 39
%A Rajoo Balaji
%A Hing Lee Siang
%A Omar Yaakob
%A Kho King Koh
%A Faizul Amri bin Adnan
%A Nasrudin bin Ismail
%A Badruzzaman bin Ahmad
%A Mohd Arif bin Ismail
%A W.B. Wan Nik
%I Taylor and Francis Ltd.