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Zheng C, Lian D, Chang S, Ma C, Du M, Sun X. Treatment of dye wastewater nanofiltration concentrates containing high anion levels by a pH-sensitive nano-sized Fe(iii)@silica microgel. NEW J CHEM 2017. [DOI: 10.1039/c7nj02575k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pH-sensitive dual effects of Fe(iii) in heterogeneous Fenton-like degradation and enhanced coagulation with silica microgel for the treatment of refractory nanofiltration concentrates.
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Affiliation(s)
- ChunMing Zheng
- State Key Laboratory of Separation Membranes and Membrane Processes
- School of Environmental and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - DongYing Lian
- State Key Laboratory of Separation Membranes and Membrane Processes
- School of Environmental and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - ShuBin Chang
- State Key Laboratory of Separation Membranes and Membrane Processes
- School of Environmental and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Chao Ma
- Tianjin Engineering Center for Safety Evaluation of Water Quality & Safeguards Technology
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - MengWei Du
- State Key Laboratory of Separation Membranes and Membrane Processes
- School of Environmental and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - XiaoHong Sun
- Key Laboratory of Advanced Ceramics and Machining Technology
- Ministry of Education
- School of Materials Science and Engineering
- Tianjin University
- Tianjin 300072
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Azevedo MM, Guimarães-Soares L, Pascoal C, Cássio F. Copper and zinc affect the activity of plasma membrane H+-ATPase and thiol content in aquatic fungi. MICROBIOLOGY-SGM 2016; 162:740-747. [PMID: 26916755 DOI: 10.1099/mic.0.000262] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Aquatic hyphomycetes are the major microbial decomposers of plant litter in streams. We selected three aquatic hyphomycete species with different abilities to tolerate, adsorb and accumulate copper and zinc, and we investigated the effects of these metals on H+-ATPase activity as well as on the levels of thiol (SH)-containing compounds. Before metal exposure, the species isolated from a metal-polluted stream (Heliscus submersus and Flagellospora curta) had higher levels of thiol compounds than the species isolated from a clean stream (Varicosporium elodeae). However, V. elodeae rapidly increased the levels of thiols after metal exposure, emphasizing the importance of these compounds in fungal survival under metal stress. The highest amounts of metals adsorbed to fungal mycelia were found in the most tolerant species to each metal, i.e. in H. submersus exposed to copper and in V. elodeae exposed to zinc. Short-term (10 min) exposure to copper completely inhibited the activity of H+-ATPase of H. submersus and V. elodeae, whilst zinc only led to a similar effect on H. submersus. However, at longer exposure times (8 days) the most metal-tolerant species exhibited increased H+-ATPase activities, suggesting that the plasma membrane proton pump may be involved in the acclimation of aquatic hyphomycetes to metals.
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Affiliation(s)
- M M Azevedo
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho,Campus of Gualtar, 4710-057 Braga,Portugal.,Department of Microbiology, Faculty of Medicine, University of Porto,4200-319 Porto,Portugal.,Center for Research in Health Technologies and Information Systems, Faculty of Medicine, University of Porto,4200-319 Porto,Portugal
| | - L Guimarães-Soares
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho,Campus of Gualtar, 4710-057 Braga,Portugal
| | - C Pascoal
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho,Campus of Gualtar, 4710-057 Braga,Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho,Campus of Gualtar, 4710-057 Braga,Portugal
| | - F Cássio
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho,Campus of Gualtar, 4710-057 Braga,Portugal.,Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho,Campus of Gualtar, 4710-057 Braga,Portugal
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The role of Cys108 in Trigonopsis variabilis d-amino acid oxidase examined through chemical oxidation studies and point mutations C108S and C108D. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2010; 1804:1483-91. [DOI: 10.1016/j.bbapap.2010.02.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2009] [Revised: 01/19/2010] [Accepted: 02/10/2010] [Indexed: 12/20/2022]
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Yeast and stress: from the laboratory to the brewery. KVASNY PRUMYSL 2010. [DOI: 10.18832/kp2010013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kujan P, Prell A, Safár H, Sobotka M, Rezanka T, Holler P. Removal of copper ions from dilute solutions by Streptomyces noursei mycelium. Comparison with yeast biomass. Folia Microbiol (Praha) 2006; 50:309-13. [PMID: 16408849 DOI: 10.1007/bf02931411] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Sorption properties of Streptomyces noursei mycelium for copper ions were compared with the accumulation competence of dried and native yeast (Candida utilis) biomass. The copper sorption capacity of S. noursei after optimization was found to be higher than that of the two other adsorbents (dried yeast biomass 82 %, native Candida cells 48 % of the sorption capacity of the S. noursei mycelium).
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Affiliation(s)
- P Kujan
- Institute of Microbiology, Academy of Sciences of the Czech Republic, 142 20 Prague, Czechia
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