PMID- 30099171 OWN - NLM STAT- MEDLINE DCOM- 20181211 LR - 20181211 IS - 1090-2414 (Electronic) IS - 0147-6513 (Linking) VI - 164 DP - 2018 Nov 30 TI - Removal of dichlorophenol by Chlorella pyrenoidosa through self-regulating mechanism in air-tight test environment. PG - 109-117 LID - S0147-6513(18)30737-1 [pii] LID - 10.1016/j.ecoenv.2018.08.005 [doi] AB - Microalgae are surprisingly efficient to remove pollutants in a hermetically closed environment, though its growth is inhibited in the absence of pollutants. The final pH, algal density, Chl-a content, and the removal efficiency of 2,4-dichlorophenol (2,4-DCP) by Chlorellar pyrenoidosa in a closed system were observed under different initial pH, lighting regimes, and various carbon sources. The optimal condition for 2,4-DCP removal was obtained, and adopted to observe the evolution of above items by domesticated and origin strains. The results showed that both respiration and photosynthesis participated in the degradation of 2,4-DCP, and caused the changes of pH. The photosynthesis seemed to increase the solution pH, while the respiration and the biodegradation of 2,4-DCP to decrease the solution pH. The domesticated strain achieved nearly 100% removal when initial concentrations of 2,4-DCP lower than 200 mug L(-1), due to providing a appropriate but narrow pH evolution range, mostly falling between 6.5 and 7.9. The research helps to understand the mechanism of biodegradation of chlorophenol compounds by green algae. CI - Copyright (c) 2018. Published by Elsevier Inc. FAU - Li, Feili AU - Li F AD - College of Environment, Zhejiang University of Technology, Hangzhou 310032, China. Electronic address: lifeili@zjut.edu.cn. FAU - Zhao, Liyuan AU - Zhao L AD - College of Environment, Zhejiang University of Technology, Hangzhou 310032, China. FAU - Jinxu, Yifei AU - Jinxu Y AD - College of Environment, Zhejiang University of Technology, Hangzhou 310032, China. FAU - Shi, Wen AU - Shi W AD - College of Environment, Zhejiang University of Technology, Hangzhou 310032, China. FAU - Zhou, Siqi AU - Zhou S AD - College of Environment, Zhejiang University of Technology, Hangzhou 310032, China; School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China. FAU - Yuan, Kai AU - Yuan K AD - College of Environment, Zhejiang University of Technology, Hangzhou 310032, China. FAU - Sheng, G Daniel AU - Sheng GD AD - School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China. Electronic address: dansheng@usts.edu.cn. LA - eng PT - Journal Article DEP - 20180809 PL - Netherlands TA - Ecotoxicol Environ Saf JT - Ecotoxicology and environmental safety JID - 7805381 RN - 0 (Chlorophenols) RN - 0 (Water Pollutants, Chemical) RN - 7440-44-0 (Carbon) RN - R669TG1950 (2,4-dichlorophenol) RN - YF5Q9EJC8Y (Chlorophyll A) SB - IM MH - Biodegradation, Environmental MH - Carbon/metabolism MH - Chlorella/*metabolism MH - Chlorophenols/*isolation & purification MH - Chlorophyll A/analysis MH - Fresh Water/chemistry MH - Hydrogen-Ion Concentration MH - Light MH - Photosynthesis MH - Water Pollutants, Chemical/*isolation & purification OTO - NOTNLM OT - 2,4-DCP OT - Biodegradation OT - Green alga OT - Self-regulation mechanism EDAT- 2018/08/14 06:00 MHDA- 2018/12/12 06:00 CRDT- 2018/08/13 06:00 PHST- 2018/06/15 00:00 [received] PHST- 2018/07/29 00:00 [revised] PHST- 2018/08/01 00:00 [accepted] PHST- 2018/08/14 06:00 [pubmed] PHST- 2018/12/12 06:00 [medline] PHST- 2018/08/13 06:00 [entrez] AID - S0147-6513(18)30737-1 [pii] AID - 10.1016/j.ecoenv.2018.08.005 [doi] PST - ppublish SO - Ecotoxicol Environ Saf. 2018 Nov 30;164:109-117. doi: 10.1016/j.ecoenv.2018.08.005. Epub 2018 Aug 9.