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Co-metabolic biodegradation of chlorinated ethene in an oxygen- and ethane-based membrane biofilm reactor.
Chi Z, Liu X, Li H, Liang S, Luo YH, Zhou C, Rittmann BE. Chi Z, et al. Among authors: rittmann be. Sci Total Environ. 2023 Dec 20;905:167323. doi: 10.1016/j.scitotenv.2023.167323. Epub 2023 Sep 23. Sci Total Environ. 2023. PMID: 37742949
One approach for detoxifying chlorinated ethenes is aerobic co-metabilims using ethane (C(2)H(6)) as the primary substrate. This study evaluated long-term continuous biodegradation of three chlorinated alkenes in a membrane biofilm reactor (MBfR) that delivered C(2)H(6) an …
One approach for detoxifying chlorinated ethenes is aerobic co-metabilims using ethane (C(2)H(6)) as the primary substrate. This study evalu …
Adsorption and Reductive Defluorination of Perfluorooctanoic Acid over Palladium Nanoparticles.
Long M, Donoso J, Bhati M, Elias WC, Heck KN, Luo YH, Lai YS, Gu H, Senftle TP, Zhou C, Wong MS, Rittmann BE. Long M, et al. Among authors: rittmann be. Environ Sci Technol. 2021 Nov 2;55(21):14836-14843. doi: 10.1021/acs.est.1c03134. Epub 2021 Sep 9. Environ Sci Technol. 2021. PMID: 34496574
Batch tests documented that Pd(0)NPs catalyzed hydrodefluorination of PFOA to partially fluorinated and nonfluorinated octanoic acids; the first-order rate constant for PFOA removal was 0.030 h(-1), and a maximum defluorination rate was 16 muM/h in our bench-scale MCfR. Continuou …
Batch tests documented that Pd(0)NPs catalyzed hydrodefluorination of PFOA to partially fluorinated and nonfluorinated octanoic acids; the f …
H2-Based Membrane Catalyst-Film Reactor (H2-MCfR) Loaded with Palladium for Removing Oxidized Contaminants in Water.
Zhou D, Luo YH, Zheng CW, Long M, Long X, Bi Y, Zheng X, Zhou C, Rittmann BE. Zhou D, et al. Among authors: rittmann be. Environ Sci Technol. 2021 May 18;55(10):7082-7093. doi: 10.1021/acs.est.1c01189. Epub 2021 Apr 26. Environ Sci Technol. 2021. PMID: 33900089
The results support that the H(2)-MCfR is a potentially sustainable and reliable catalytic platform for reducing oxidized water contaminants: simple synthesis of an active and versatile catalyst that has long-term stability during continuous operation....
The results support that the H(2)-MCfR is a potentially sustainable and reliable catalytic platform for reducing oxidized water contaminants …
Para-Chlorophenol (4-CP) Removal by a Palladium-Coated Biofilm: Coupling Catalytic Dechlorination and Microbial Mineralization via Denitrification.
Long M, Long X, Zheng CW, Luo YH, Zhou C, Rittmann BE. Long M, et al. Among authors: rittmann be. Environ Sci Technol. 2021 May 4;55(9):6309-6319. doi: 10.1021/acs.est.0c08307. Epub 2021 Apr 13. Environ Sci Technol. 2021. PMID: 33848132
Then, the biofilm mineralized the cyclohexanone by utilizing it as a supplementary electron donor to accelerate nitrate reduction. Long-term operation of the Pd-MBfR enriched the microbial community in cyclohexanone degraders within Clostridium, Chryseobacterium, and Brach …
Then, the biofilm mineralized the cyclohexanone by utilizing it as a supplementary electron donor to accelerate nitrate reduction. Long-t …
Long-Term Continuous Co-reduction of 1,1,1-Trichloroethane and Trichloroethene over Palladium Nanoparticles Spontaneously Deposited on H(2)-Transfer Membranes.
Luo YH, Zhou C, Bi Y, Long X, Wang B, Tang Y, Krajmalnik-Brown R, Rittmann BE. Luo YH, et al. Among authors: rittmann be. Environ Sci Technol. 2021 Feb 2;55(3):2057-2066. doi: 10.1021/acs.est.0c05217. Epub 2020 Nov 25. Environ Sci Technol. 2021. PMID: 33236898
H(2)-induced reduction over precious-metal catalysts has proven advantageous, but its application to long-term continuous treatment has been limited due to poor H(2)-transfer efficiency and catalyst loss. ...Only 4% of the originally deposited PdNPs were lost over 90 days …
H(2)-induced reduction over precious-metal catalysts has proven advantageous, but its application to long-term continuous treatment h …
Influence of operating conditions on sulfate reduction from real mining process water by membrane biofilm reactors.
Suárez JI, Aybar M, Nancucheo I, Poch B, Martínez P, Rittmann BE, Schwarz A. Suárez JI, et al. Among authors: rittmann be. Chemosphere. 2020 Apr;244:125508. doi: 10.1016/j.chemosphere.2019.125508. Epub 2019 Nov 29. Chemosphere. 2020. PMID: 31812042
Although several strategies for control of pH and gas back-diffusion were applied, it was not possible to sustain a high degree of sulfate reduction over the long-term. The most likely cause was precipitation of calcite inside the biofilm and on the surface of fibers, whic …
Although several strategies for control of pH and gas back-diffusion were applied, it was not possible to sustain a high degree of sulfate r …
Total electron acceptor loading and composition affect hexavalent uranium reduction and microbial community structure in a membrane biofilm reactor.
Ontiveros-Valencia A, Zhou C, Ilhan ZE, de Saint Cyr LC, Krajmalnik-Brown R, Rittmann BE. Ontiveros-Valencia A, et al. Among authors: rittmann be. Water Res. 2017 Nov 15;125:341-349. doi: 10.1016/j.watres.2017.08.060. Epub 2017 Aug 29. Water Res. 2017. PMID: 28881210
Predictive metagenome analysis further points out community changes in response to alterations in the electron-acceptor loading: Sporulation and homo-acetogenesis were critical factors for strengthening stable microbial U(VI) reduction. This study documents that sporulation was i …
Predictive metagenome analysis further points out community changes in response to alterations in the electron-acceptor loading: Sporulation …
Nitrate effects on chromate reduction in a methane-based biofilm.
Zhong L, Lai CY, Shi LD, Wang KD, Dai YJ, Liu YW, Ma F, Rittmann BE, Zheng P, Zhao HP. Zhong L, et al. Among authors: rittmann be. Water Res. 2017 May 15;115:130-137. doi: 10.1016/j.watres.2017.03.003. Epub 2017 Mar 2. Water Res. 2017. PMID: 28273443
After 50 days operation in Stage 2, the Cr(VI) reduction recovered to only 70% in Stage 3, when NO(3)(-) was removed from the influent; thus, NO(3)(-) had a significant long-term inhibition effect on Cr(VI) reduction. Weighted PCoA and UniFrac analyses proved that the intr …
After 50 days operation in Stage 2, the Cr(VI) reduction recovered to only 70% in Stage 3, when NO(3)(-) was removed from the influent; thus …
Nitrite accumulation from simultaneous free-ammonia and free-nitrous-acid inhibition and oxygen limitation in a continuous-flow biofilm reactor.
Park S, Chung J, Rittmann BE, Bae W. Park S, et al. Among authors: rittmann be. Biotechnol Bioeng. 2015 Jan;112(1):43-52. doi: 10.1002/bit.25326. Epub 2014 Sep 10. Biotechnol Bioeng. 2015. PMID: 24981425
CFBR experiments were organized into four sets with these expected outcomes based on the MSNBM as follows: (i) Control, giving full nitrification; (ii) oxygen limitation, giving modest long-term nitrite build up; (iii) FA inhibition, giving no long-term nitrite accu …
CFBR experiments were organized into four sets with these expected outcomes based on the MSNBM as follows: (i) Control, giving full nitrific …
30 results