PMID- 23474335 OWN - NLM STAT- MEDLINE DCOM- 20130912 LR - 20161125 IS - 1095-8630 (Electronic) IS - 0301-4797 (Linking) VI - 119 DP - 2013 Apr 15 TI - Memory effect driven emissions of persistent organic pollutants from industrial thermal processes, their implications and management: a review. PG - 111-20 LID - S0301-4797(13)00064-9 [pii] LID - 10.1016/j.jenvman.2013.01.026 [doi] AB - Memory effect is delayed emission of certain persistent organic pollutants (POPs). Many of the POP compounds viz. polycyclic aromatic hydrocarbons (PAHs), polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF) get trapped in the particulate phase deposited in the flue transfer lines and air pollution control systems (equivalent to storage in the memory of a system) and released subsequently. Memory effect driven emission is a combination of real time emission and emission of stored compounds and so is not a true measure of actual real time emission. Memory effect is now realized to have existed for a long time but was not identified and understood until recently. Memory effect has several serious implications e.g. it wrongly depicts emission patterns of POPs; it makes compliance to stipulated emission standards difficult; it could lead to wrong calculations of emission factors and emission inventory estimates of a plant and leads to misinterpretation of efficacy of processes and air pollution control systems. Further, new PCDD/Fs may be formed in the trapped particulate phase via de novo synthesis and the new compounds may be emitted, thereby increasing total PCDD/F emissions, apart from altering the homologue pattern of PCDD/Fs in emissions. Memory effect could be minimized by judicious operational and management (O&M) procedures like optimizing combustion, minimizing unnecessary halts in operations, periodical cleaning of flue transfer lines, application of inhibitors etc. CI - Copyright (c) 2013 Elsevier Ltd. All rights reserved. FAU - Trivedi, Jitendra AU - Trivedi J AD - Air Pollution Control Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440020, India. FAU - Majumdar, Deepanjan AU - Majumdar D LA - eng PT - Journal Article PT - Review DEP - 20130305 PL - England TA - J Environ Manage JT - Journal of environmental management JID - 0401664 RN - 0 (Air Pollutants) RN - 0 (Benzofurans) RN - 0 (Industrial Waste) RN - 0 (Polychlorinated Dibenzodioxins) RN - 0 (Polycyclic Aromatic Hydrocarbons) SB - IM MH - Air Pollutants/*analysis MH - Benzofurans/*analysis MH - Incineration MH - Industrial Waste MH - Polychlorinated Dibenzodioxins/*analogs & derivatives/analysis MH - Polycyclic Aromatic Hydrocarbons/*analysis MH - Time Factors EDAT- 2013/03/12 06:00 MHDA- 2013/09/13 06:00 CRDT- 2013/03/12 06:00 PHST- 2012/01/23 00:00 [received] PHST- 2013/01/10 00:00 [revised] PHST- 2013/01/26 00:00 [accepted] PHST- 2013/03/12 06:00 [entrez] PHST- 2013/03/12 06:00 [pubmed] PHST- 2013/09/13 06:00 [medline] AID - S0301-4797(13)00064-9 [pii] AID - 10.1016/j.jenvman.2013.01.026 [doi] PST - ppublish SO - J Environ Manage. 2013 Apr 15;119:111-20. doi: 10.1016/j.jenvman.2013.01.026. Epub 2013 Mar 5.