Details zur Publikation

Referenztyp Buchkapitel
DOI / URL Link
Titel (primär) Benzene removal in laboratory scale model wetland under different electron acceptor conditions treating sulfate-rich wastewater
Titel (sekundär) Advances in environmental technologies III : selected, peer reviewed papers from the 2014 3rd International Conference on Energy and Environmental Protection (ICEEP 2014) April 26-28, 2014, Xi'an, China
Autor Chen, Z.B.; Kappelmeyer, U.; Kuschk, P.;
Herausgeber Wang, A.; Li, X.; Wang, X.; Zhao, J.;
Journal / Serie Advanced Materials Research
Erscheinungsjahr 2014
Department UBT;
Band/Volume 955-959
Sprache englisch;
POF III (gesamt) T41;
Keywords Benzene; Nitrate Inhibition; Sulfate Reduction; Volatilization; Wetland
UFZ Querschnittsthemen RU3;
Abstract Constructed wetlands (CWs) are shown to be suitable for the treatment of water contaminated with benzene. However, due to the high sulfate concentration (around 850 mg/L) in influent, sulfate reduction will be stimulated in CWs. Subsequently, the toxicity of sulfide will be a catastrophe to the plants, and the treatment performance of CWs will be impaired. In this study, nitrite and nitrate were used as competitor with sulfate for electron acceptor to prevent the sulfate reduction. With the inflow benzene concentration ranged from 21.6-103 μg, and the accumulation of sulfide reached up to 39%, the removal efficiency of benzene decreased from 86% to 27%. However, with the addition of nitrite and nitrate, the sulfide accumulation was inhibited successfully, and the benzene removal efficiency recovered to 85%. In conclusion, both nitrite and nitrate can be an option for preventing sulfate reduction and sulfide toxicity in CWs treating sulfate-rich wastewater.
ID 16242
dauerhafte UFZ-Verlinkung http://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=16242
Chen, Z.B., Kappelmeyer, U., Kuschk, P. (2014):
Benzene removal in laboratory scale model wetland under different electron acceptor conditions treating sulfate-rich wastewater
In: Wang, A., Li, X., Wang, X., Zhao, J. (eds.)
Advances in environmental technologies III : selected, peer reviewed papers from the 2014 3rd International Conference on Energy and Environmental Protection (ICEEP 2014) April 26-28, 2014, Xi'an, China
Advanced Materials Research 955-959
Trans Tech Publications, Durnten-Zurich, p. 2083 - 2086