Concurrent vanadate and ammonium abatement in a membrane biofilm reactor

Li，Lei1; Zhang，Baogang1; Shi，Jiaxin1; He，Jinxi1; Zhang，Wei1; Yan，Wenyue1; Li，Min1; Tang，Chongjian2; Li，Hailong3

2022-08-15

10.1016/j.cej.2022.136285

CHEMICAL ENGINEERING JOURNAL   影响因子和分区

1385-8947

1873-3212

Ammonium (NH) is commonly used as either a precipitant or extractant in metallurgy of non-ferrous metal and rare earth ore (e.g., vanadium). This results in the coexistence of toxic metal and NH-N in the effluent. Despite its toxicity, there remains little in the way of biological treatments to synchronously eliminate vanadate [V(V)] and NH-N in vanadium smelting wastewater. In this study, simultaneous V(V) and NH-N removal was achieved using a membrane biofilm reactor (MBfR). The removal efficiencies for V(V) and NH-N reached 96.8 ± 0.8% and 75.4 ± 1.2%, respectively, with initial concentrations for both beginning at 10 mg/L along with a hydraulic retention time at 36 h. V(V) was mainly reduced to V(IV) precipitates. Complete nitrogen removal was achieved with negligible NO-N/NO-N accumulation. Pseudomonas was identified as the main contributor to V(V) reduction, nitrification, and denitrification. The identified V(V) reducers and nitrifying/denitrifying bacteria were positively related to the V(V) and NH-N removal capacity of MBfR. The increased gene abundance and improved enzymic activity for nitrogen cycling collectively evidenced that V(V) reduction was catalyzed by denitrification enzymes and NH-N was removed through nitrification/denitrification. Collectively, the results from this study offer a novel strategy for the treatment of vanadium-bearing smelting wastewater by eliminating V(V) and NH-N in a one-step bioprocess.

Ammonium Membrane biofilm reactor Nitrification/denitrification Pseudomonas genus Vanadate bioreduction

SCI ; EI

英语

其他

National Natural Science Foundation of China (NSFC)[42022055,"U21A2033"]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000799795200002

ELSEVIER SCIENCE SA

20221511957990

Bacteria ; Biofilms ; Bioreactors ; Denitrification ; Indium metallurgy ; Nitrification ; Nitrogen removal ; Rare earths ; Wastewater treatment

Industrial Wastes:452.3 ; Industrial Wastes Treatment and Disposal:452.4 ; Biotechnology:461.8 ; Biomaterials (including synthetics):462.5 ; Metallurgy:531.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Chemical Plants and Equipment:802.1 ; Chemical Reactions:802.2 ; Inorganic Compounds:804.2

ENGINEERING

2-s2.0-85127899671

Scopus

1.School of Water Resources and Environment,MOE Key Laboratory of Groundwater Circulation and Environmental Evolution,China University of Geosciences (Beijing),Beijing,100083,China
2.School of Metallurgy and Environment,Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution,Changsha,Hunan,410083,China
3.School of Environmental Science and Engineering,Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,Southern University of Science and Technology,Shenzhen,518055,China

Li，Lei,Zhang，Baogang,Shi，Jiaxin,et al. Concurrent vanadate and ammonium abatement in a membrane biofilm reactor[J]. CHEMICAL ENGINEERING JOURNAL,2022,442.

Li，Lei.,Zhang，Baogang.,Shi，Jiaxin.,He，Jinxi.,Zhang，Wei.,...&Li，Hailong.(2022).Concurrent vanadate and ammonium abatement in a membrane biofilm reactor.CHEMICAL ENGINEERING JOURNAL,442.

Li，Lei,et al."Concurrent vanadate and ammonium abatement in a membrane biofilm reactor".CHEMICAL ENGINEERING JOURNAL 442(2022).