Impact of precipitation on the treatment of real ion-exchange brine using the H2-based membrane biofilm reactor

2011 ◽  
Vol 63 (7) ◽  
pp. 1453-1458 ◽  
Author(s):  
Steven W. Van Ginkel ◽  
Youneng Tang ◽  
Bruce E. Rittmann
Keyword(s):  
Citric Acid ◽  
Ion Exchange ◽  
Membrane Fouling ◽  
Nitrate Reduction ◽  
Biofilm Reactor ◽  
Membrane Biofilm Reactor ◽  
Acid Washing ◽  
Calcium And Magnesium ◽  
H2 Flux ◽  
Optimal Ph

The H2-based membrane biofilm reactor (MBfR) was used to remove nitrate and perchlorate from real ion-exchange brine at two different salinities (30- and 50-g/L NaCl). Base production from nitrate reduction to N2 gas caused the pH to increase, and this exacerbated precipitation of calcium and magnesium carbonates onto the MBfR fibers. The precipitates lowered the H2 flux to the biofilm and caused a deterioration of denitrification performance that could be reversed by mild citric-acid washing. The addition of acid seems to be the only mechanism to avoid serious precipitation, membrane fouling, and non-optimal pH for denitrification.

Effect of NaCl on nitrate removal from ion-exchange spent brine in the membrane biofilm reactor (MBfR)

2012 ◽  
Vol 65 (1) ◽  
pp. 100-104 ◽  
Author(s):  
Steven W. Van Ginkel ◽  
Bi-o Kim ◽  
Ziming Yang ◽  
Robby Sittmann ◽  
Mark Sholin ◽  
...  
Keyword(s):  
Citric Acid ◽  
Ion Exchange ◽  
Membrane Fouling ◽  
Nitrate Removal ◽  
Biofilm Reactor ◽  
Reactor Operation ◽  
High Sodium ◽  
Loading Rates ◽  
Osmotic Tolerance ◽  
Membrane Biofilm Reactor

The H2-based membrane biofilm reactor was used to remove nitrate from synthetic ion-exchange brine at NaCl concentrations from ∼3 to 30 g/L. NaCl concentrations below 20 g/L did not affect the nitrate removal flux as long as potassium was available to generate osmotic tolerance for high sodium, the H2 pressure was adequate, and membrane fouling was eliminated. Operating pHs of 7–8 and periodic citric acid washes controlled membrane fouling and enabled reactor operation for 650 days. At 30 psig H2 and high nitrate loading rates of 15 to 80 g/m2 d, nitrate removal fluxes ranged from 2.5 to ∼6 g/m2 d, which are the highest fluxes observed when treating 30 g/L IX brine. However, percent removals were low, and the H2 pressure probably limited the removal flux.

scholarly journals Actual Application of a H2-Based Polyvinyl Chloride Hollow Fiber Membrane Biofilm Reactor to Remove Nitrate from Groundwater

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Yanhao Zhang ◽  
Lilong Huang ◽  
Zhibin Zhang ◽  
Cuizhen Sun ◽  
Jixiang Li
Keyword(s):  
Dissolved Oxygen ◽  
Sulfate Reduction ◽  
Oxygen Reduction ◽  
Hollow Fiber ◽  
Nitrate Reduction ◽  
Hollow Fiber Membrane ◽  
Biofilm Reactor ◽  
Contaminated Groundwater ◽  
Fiber Membrane ◽  
Membrane Biofilm Reactor

To evaluate the actual performance of the H2-based polyvinyl chloride hollow fiber membrane biofilm reactor (HF-MBfR), we used HF-MBfR to remove nitrate from the nitrate contaminated groundwater with the dissolved oxygen (~6.2 mg/L) in Zhangqiu city (Jinan, China). The reactor was operated over 135 days with the actual nitrate contaminated groundwater. The result showed that maximum of nitrate denitrification rate achieved was over 133.8 gNO3--N/m3d (1.18 gNO3--N/m2d) and the total nitrogen removal was more than 95.0% at the conditions of influent nitrate 50 mg/L, hydrogen pressure 0.05 MPa, and dissolved oxygen (DO) 6.2 mg/L, with the nitrate in effluent under the value limits of drinking water. The fluxes analysis showed that the electron-equivalent fluxes of nitrate, sulfate, and oxygen account for about 81.2%, 15.2%, and 3.6%, respectively, which indicated that nitrate reduction could consume more electrons than that of sulfate reduction and dissolved oxygen reduction. The nitrate reduction was not significantly influenced by sulfate reduction and the dissolved oxygen reduction. Based on the actual groundwater quality on site, the Langelier Saturation Index (LSI) was 0.4, and the membrane could be at the risk of surface scaling.

scholarly journals Model-based evaluation of selenate and nitrate reduction in hydrogen-based membrane biofilm reactor

2019 ◽  
Vol 195 ◽  
pp. 262-270 ◽  
Author(s):  
Xueming Chen ◽  
Chun-Yu Lai ◽  
Fang Fang ◽  
He-Ping Zhao ◽  
Xiaohu Dai ◽  
...  
Keyword(s):  
Nitrate Reduction ◽  
Biofilm Reactor ◽  
Model Based ◽  
Membrane Biofilm Reactor

Kinetics of nitrate and perchlorate reduction in ion-exchange brine using the membrane biofilm reactor (MBfR)

2008 ◽  
Vol 42 (15) ◽  
pp. 4197-4205 ◽  
Author(s):  
Steven W. Van Ginkel ◽  
Chang Hoon Ahn ◽  
Mohammad Badruzzaman ◽  
Deborah J. Roberts ◽  
S. Geno Lehman ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Biofilm Reactor ◽  
Perchlorate Reduction ◽  
Membrane Biofilm Reactor ◽  
Kinetics Of

Microbial community structure during nitrate and perchlorate reduction in ion-exchange brine using the hydrogen-based membrane biofilm reactor (MBfR)

2010 ◽  
Vol 101 (10) ◽  
pp. 3747-3750 ◽  
Author(s):  
Steven W. Van Ginkel ◽  
Regina Lamendella ◽  
William P. Kovacik Jr. ◽  
Jorge W. Santo Domingo ◽  
Bruce E. Rittmann
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Ion Exchange ◽  
Microbial Community Structure ◽  
Biofilm Reactor ◽  
Perchlorate Reduction ◽  
Membrane Biofilm Reactor

Study on Membrane Fouling of a Hydrogen-Based Membrane Biofilm Reactor Treating Nitrate-Contaminated Drinking Water

2013 ◽  
Vol 361-363 ◽  
pp. 814-817
Author(s):  
Gang Li ◽  
Jun Yu ◽  
Yan Hao Zhang ◽  
Lei Gao ◽  
Hua Zhang
Keyword(s):  
Drinking Water ◽  
Nitrogen Removal ◽  
Hollow Fiber ◽  
Membrane Fouling ◽  
Hollow Fiber Membrane ◽  
Biofilm Reactor ◽  
Fiber Membrane ◽  
Membrane Biofilm Reactor ◽  
Contaminated Drinking Water ◽  
Total Nitrogen Removal

A hollow fiber membrane biofilm reactor (MBfR) using Polyethylene (PE) membranes was investigated for denitrification in nitrate-contimanitated drinking water. The reactor was operated over 85 days with influent nitrate loading increasing gradually. The result showed that maximum of nitrate denitrification rate achieved was 3.84 g NO3ˉ-N/m3/d (1.36 g NO3ˉ-N/m2/d) and the total nitrogen removal was more than 96%. The results also showed that the membrane pollution was mainly caused by the mineral sedimentation and EPS.

A membrane biofilm reactor achieves aerobic methane oxidation coupled to denitrification (AME-D) with high efficiency

2008 ◽  
Vol 58 (1) ◽  
pp. 83-87 ◽  
Author(s):  
O. Modin ◽  
K. Fukushi ◽  
F. Nakajima ◽  
K. Yamamoto
Keyword(s):  
Methane Oxidation ◽  
High Efficiency ◽  
Biofilm Reactor ◽  
Practical Application ◽  
Suspended Culture ◽  
Consumption Ratio ◽  
Membrane Biofilm Reactor ◽  
Nitrate Consumption ◽  
Attached Culture ◽  
Aerobic Methanotrophs

Methane would potentially be an inexpensive, widely available electron donor for denitrification of wastewaters poor in organics. Currently, no methanotrophic microbe is known to denitrify. However, aerobic methane oxidation coupled to denitrification (AME-D) has been observed in several laboratory studies. In the AME-D process, aerobic methanotrophs oxidise methane and release organic metabolites and lysis products, which are used by coexisting denitrifiers as electron donors for denitrification. Due to the presence of oxygen, the denitrification efficiency in terms of methane-to-nitrate consumption is usually low. To improve this efficiency the use of a membrane biofilm reactor was investigated. The denitrification efficiency of an AME-D culture in (1) a suspended growth reactor, and (2) a membrane biofilm reactor was studied. The methane-to-nitrate consumption ratio for the suspended culture was 8.7. For the membrane-attached culture the ratio was 2.2. The results clearly indicated that the membrane-attached biofilm was superior to the suspended culture in terms of denitrification efficiency. This study showed that for practical application of the AME-D process, focus should be placed on development of a biofilm reactor.

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