PMID- 30071435 OWN - NLM STAT- MEDLINE DCOM- 20181022 LR - 20190318 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 211 DP - 2018 Nov TI - Removal effect of the low-low temperature electrostatic precipitator on polycyclic aromatic hydrocarbons. PG - 44-49 LID - S0045-6535(18)31338-9 [pii] LID - 10.1016/j.chemosphere.2018.07.080 [doi] AB - The low-low temperature electrostatic precipitator (LLT-ESP) is one of the most used devices for pollutant control in ultra-low emission coal-fired power plants. This study investigated the influence of the LLT-ESP on polycyclic aromatic hydrocarbons (PAHs) distributions in flue gas from an ultra-low emission coal-fired power plant. The total gas-phase PAH concentration was reduced from 27.52 mug/m(3) to 3.38 mug/m(3). The total particulate-phase PAH concentration decreased from 14.36 mug/m(3) to 0.34 mug/m(3). The removal efficiency of the LLT-ESP for gas-phase and particulate phase carcinogenic higher molecular weight (HMW) PAHs was 85% and 99%, respectively. The total concentration of 16 selected PAHs in feed coal was 98.16 mug/g. The fly ash particle size successively decreased from Electric Field 1 (F1) to Electric Field 4 (F4). The total PAH concentration decreased from F1 to F2 but increased again from F3 to F4. The flue gas cooling process significantly contributed to the elimination of both gas- and particulate-phase PAHs in the flue gas. Presumably, most of the condensed PAHs were adhered to or absorbed in the fly ash and were scavenged in Field 1. Both gas- and particulate-phase 5- and 6-ring PAHs in the flue gas were completely removed in Field 1. The discharge process in the electric fields may promote the formation of several 4- or 5-ring PAHs. In this study, benzo[k]fluoranthene (BKF) and benzo[a]pyrene (BaP) were regenerated in the particles rather than in the flue gas during the discharge process in the electric fields. CI - Copyright (c) 2018 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Li, Xiaodong AU - Li X AD - State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China. Electronic address: lixd@zju.edu.cn. FAU - Li, Jingwei AU - Li J AD - State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China. FAU - Wu, Dongli AU - Wu D AD - Zhejiang Energy Group R&D, Zhejiang Province, Hangzhou 310003, China. FAU - Lu, Shengyong AU - Lu S AD - State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China. FAU - Zhou, Chenyang AU - Zhou C AD - State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China. FAU - Qi, Zhifu AU - Qi Z AD - Zhejiang Energy Group R&D, Zhejiang Province, Hangzhou 310003, China. FAU - Li, Min AU - Li M AD - State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China. FAU - Yan, Jianhua AU - Yan J AD - State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China. LA - eng PT - Journal Article DEP - 20180717 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Polycyclic Aromatic Hydrocarbons) SB - IM MH - Polycyclic Aromatic Hydrocarbons/analysis/*chemistry MH - Power Plants/*statistics & numerical data MH - *Static Electricity MH - Temperature OTO - NOTNLM OT - Coal-fired power plant OT - Low-low temperature electrostatic precipitator OT - Polycyclic aromatic hydrocarbons OT - Removal mechanism OT - Ultra-low emission EDAT- 2018/08/03 06:00 MHDA- 2018/10/23 06:00 CRDT- 2018/08/03 06:00 PHST- 2017/12/20 00:00 [received] PHST- 2018/05/13 00:00 [revised] PHST- 2018/07/15 00:00 [accepted] PHST- 2018/08/03 06:00 [pubmed] PHST- 2018/10/23 06:00 [medline] PHST- 2018/08/03 06:00 [entrez] AID - S0045-6535(18)31338-9 [pii] AID - 10.1016/j.chemosphere.2018.07.080 [doi] PST - ppublish SO - Chemosphere. 2018 Nov;211:44-49. doi: 10.1016/j.chemosphere.2018.07.080. Epub 2018 Jul 17.