Results for “"Xiuwen Qian"”

Xiuwen Qian, Juan Huang, Xiaoyu Ji, Chunni Yan et al.

Modified basalt fiber (MBF) is a potential material that has been applied in wastewater treatment fields. In this study, superior performances of MBFs by calcium (Ca-MBF) and polyethyleneimine modification (PEI-MBF) were compared in constructed wetlands (CWs). Via chemical grafting, higher biofilm c...

Xiuwen Qian, Juan Huang, Chunni Yan, Jun Xiao et al.

In this study, ferrous ion (Fe(II)) had the potential to promote ecological functions in constructed wetlands (CWs) under perfluorooctanoic acid (PFOA) stress. Concretely, Fe(II) at 30 mg/L and 20-30 mg/L even led to 11.37% increase of urease and 93.15-243.61% increase of nitrite oxidoreductase resp...

Chunni Yan, Xuan Li, Juan Huang, Chong Cao et al.

With continued exposure to CuO nanoparticles (NPs) which were toxic to organisms, the performance of wastewater treatment facility might be affected. In present study, the feasibility of constructed wetlands (CWs) for wastewater treatment containing CuO NPs and common pollutants was comprehensively ...

Xiuwen Qian, Juan Huang, Chong Cao, Jiawei Yao

Basalt fiber (BF) was filled in constructed wetland-microbial fuel cell (CW-MFC) as bio-carrier for enhancement of operation performance under perfluorooctanoic acid (PFOA) exposure. In this study, although PFOA caused significant decline of ammonium removal by 7.5-7.7 %, slight promotion on nitroge...

Xiuwen Qian, Juan Huang, Chong Cao, Jiawei Yao et al.

In this study, constructed wetland-microbial fuel cell (CW-MFC) filled with modified basalt fiber (MBF) via iron modification was utilized for treating perfluorooctanoic acid (PFOA) containing sewage. Results showed the significant promotion by bioelectricity on ammonium and total nitrogen by 7.80-8...

Luming Wang, Xuan Li, Juan Huang, Jing Tuo et al.

Biological nests made of Modified Basalt Fiber (MBF bio-nests) serve as effective carriers for enhancing wastewater treatment. However, little is known about their performance when exposed to nano-plastics. This study investigates the decontamination efficiency and microbial functionality of four ty...

Xiuwen Qian, Juan Huang, Xinwei Li, Chong Cao et al.

The first investigation based on constructed wetlands coupled with modified basalt fiber bio-nest (MBF-CWs) was performed under exposure of short- and long-chain perfluorocarboxylic acids (PFCAs). In general, both perfluorooctanoic acid (PFOA) and perfluorobutanoic acid (PFBA) caused significant dec...

Jun Xiao, Juan Huang, Yu-Cheng Chen, Ying Wang et al.

Constructed wetland (CW) serve as the final ecological barrier for hazardous materials entering the natural water environment. Due to the ecological toxicity and difficult bioutilization characteristics of perfluorooctanoic acid (PFOA) itself, CW technology faces great challenges in the field of PFO...

Xiuwen Qian, Juan Huang, Jin Xv, Jiawei Yao

This study developed constructed wetlands (CWs) with direct current (DC) electrolysis and iron-carbon (IC) microelectrolysis. Ammonium removal was more significantly enhanced with IC by 12.7-27.3 %, while the promotion of DC only existed with lower voltage. DC electrolysis continuously promoted nitr...

Xiuwen Qian, Juan Huang, Jin Xv, Jiawei Yao

Little attention was paid on vital roles of macrophytes in iron-carbon micro-electrolysis constructed wetlands (ICME-CWs), especially focused on rhizosphere microbial interaction and metabolisms. In this study, ICME-CWs with and without macrophytes were constructed. Results showed efficient removal ...

Juan Huang, Jiawei Yao, Xiuwen Qian, Xinwei Li et al.

Modified basalt fiber bio-nest could enhance the decontamination performance of constructed wetlands (CWs), though influence of different chain-lengths perfluorocarboxylic acids (PFCAs) were awaited to be investigated. This study explored different chain-length FPCAs that generated the influence on ...

Ming Chen, Xiuwen Qian, Juan Huang, Luming Wang et al.

(2.48-4.45%) was much higher than IWWTP.