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Research Group

Aqueous Heavy Metal Pollution Control

Group Leader: Luan Fubo Laboratory: State Key Laboratory of Environmental Aquatic Chemistry

Aqueous Heavy Metal Pollution Control 

  Dr. Fubo Luan is currently a professor at the Research Center for Eco-Environmental Sciences, the Chinese Academy of Sciences (CAS). He received his Ph.D from Tongji University in 2009.From 2009 to 2015, he carried out a variety of research on water treatment in The Pennsylvania State University, USA as a postdoctoral researcher. He has been working in RCEES as a professor since 2015.  

Research interests: (1)Remediation of heavy metal contaminated surface water and groundwater; (2) Biotic/abiotic transformation of environmental organic contaminants; (3)Mine drainage wastewater treatment. 

ContactE-mail: fbluan@rcees.ac.cn; Tel: 010-62911779

Linear Free Energy Relationships for the Biotic and Abiotic Reduction of Nitroaromatic Compounds 

Fubo Luan, Christopher Gorski, William Burgos 

  Nitroaromatic compounds (NACs) are ubiquitous environmental contaminants that are susceptible to biological and abiotic reduction. We found that for the bioreduction of NACs, the logarithm of the NACs rate constants correlate with one-electron reduction potential values of the NACs (EH,NAC1) according to linear free energy relationships (LFERs). The LFER slope of log kobs versus EH,NAC/(2.303RT/F) was close to one (0.97), which implied that the first electron transfer to the NAC was the rate-limiting step of bioreduction. LFERs were also established between NAC abiotic reduction rate constants by bioreduced iron-bearing clay minerals. The second-order NAC reduction rate constants (k) by bioreduced SWy-2 and NAu-2 were well correlated to EH,NAC (R2 = 0.97 for both minerals), consistent with bioreduction results. However, the LFER slopes of log k versus EH,NAC/(2.303RT/F) were significantly less than one (0.48-0.50) for both minerals, indicating that the first electron transfer to the NAC was not the rate-limiting step of abiotic reduction.Our findings are extremely useful in predicting the fate of NACs in natural environment based on readily attainable thermodynamic data.

Linear free energy relationship for the bioreduction and abiotic reduction of NACs

Group Leader: Prof. Fubo Luan

  Postdoctoral Fellow 

Ying Meng 

2015 

Name 

Degree 

Year 

Wenbin Liu 

Ph.D 

2016 

Yahua Wang 

Master 

2016 

Representative Publications: 

  1. Luan, F.; Gorski, C.A.; Burgos, W.D., 2015. Linear free energy relationships for the biotic and abiotic reduction of nitroaromatic compounds. Environmental Science & Technology. 49, 3557–3565. 

  2. Luan, F.; Liu, Y.; Griffin A.M.; Gorski, C.A.; Burgos, W.D., 2015. Iron(III)-bearing clay minerals enhance bioreduction of nitrobenzene by Shewanella Putrefaciens CN32. Environmental Science & Technology. 49, 1418−1426. 

  3. Luan, F.;, Zhang G.X.; Senko J.M.; Burgos, W.D., 2015. Effects of supplemental organic carbon on long-term reduction and reoxidation of uranium. RSC Advances. 5, 32210–32216.


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