ORCID Profile
0000-0001-5885-3637
Current Organisations
Universidade Federal do Parana
,
Australian Centre for Excellence in Antarctic Science
,
University of Tasmania
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Publisher: Wiley
Date: 06-04-2017
DOI: 10.1002/MET.1654
Publisher: Informa UK Limited
Date: 24-11-2014
Publisher: Elsevier BV
Date: 02-2020
Publisher: Brill
Date: 11-03-2014
Publisher: Informa UK Limited
Date: 02-10-2015
Publisher: Elsevier BV
Date: 02-2020
DOI: 10.1016/J.BIORTECH.2019.122491
Abstract: Biological nitrogen removal (BNR) is a critical process in wastewater treatment. Recently, there have new microbial communities been discovered to be capable of performing BNR with novel metabolic pathways. This review presents the up-to-date status on these microorganisms, including ammonia oxidizing archaea (AOA), complete ammonia oxidation (COMAMMOX) bacteria, anaerobic ammonium oxidation coupled to iron reduction (FEAMMOX) bacteria, anaerobic ammonium oxidation (ANAMMOX) bacteria and denitrifying anaerobic methane oxidation (DAMO) microorganism. Their metabolic pathways and enzymatic reactions in nitrogen cycle are demonstrated. Generally, these novel microbial communities have advantages over canonical nitrifiers or denitrifiers, such as higher substrate affinities, better physicochemical tolerances and/or less greenhouse gas emission. Also, their recent development and/or implementation in BNR is discussed and outlook. Finally, the key implications of coupling these microbial communities for BNR are identified. Overall, this review illustrates novel microbial communities that could provide new possibilities for high-performance and energy-saving nitrogen removal from wastewater.
Publisher: Wiley
Date: 11-03-2018
Publisher: Edward Elgar Publishing
Date: 07-11-2019
Publisher: Elsevier BV
Date: 04-2009
DOI: 10.1016/J.CHROMA.2008.09.076
Abstract: In this work the higher peak capacity and resolution of comprehensive two-dimensional gas chromatography (GCxGC) has been successfully applied, for the first time, to tentatively identify several polar organic compounds of organic extracts of aqueous phases resulting from microwave demulsification process of water-in-crude oil emulsions. Results have shown that higher temperatures and longer exposure time to microwave irradiation produced water phases with a wider variety of polar organic compounds. The microwave process showed to be suitable for the extraction of several polar compounds classes of petroleum. The proposed microwave extraction method and GCxGC identification of polar compounds of petroleum s les are of practical interest for the petrochemical industry due to corrosion and related problems associated with these polar compounds in refinery equipments. The GCxGC/time-of-flight MS technique shows to be very important in the total separation of different classes of compounds and allows the identification of many compounds in these classes.
Publisher: CSIRO Publishing
Date: 2019
DOI: 10.1071/MF18066
Abstract: The mission of Australia’s Integrated Marine Observing System (IMOS), established under the Federal Government’s national collaborative research infrastructure program, is to deliver ocean observations to the marine and climate science community. However, the observations have many uses, ranging from real-time operational forecasting to understanding of processes and policy decision making. Observations need to be provided in a format that fits the purpose of the intended application. Turning observations into usable data, time series, gridded products and analyses broadens the use of such observations. Value adding by developing products that are relevant to end-user needs and easily accessible to non-scientists is also required as a strategic response to new and emerging socioeconomic, legal and policy priorities. This paper describes some of the pathways on which IMOS observations are being delivered and used in Australia, demonstrating the value that ocean observations have for society.
Publisher: Brill
Date: 05-12-2015
Abstract: Three substantive areas of analysis have emerged in the legal scholarship of the validity in international law of Antarctic territorial claims. The first is the physical amenability of the Antarctic continent to claims of territory. The second, and largest, is the application of traditional laws of territorial acquisition to Antarctic claims. The alternative argument of Antarctica as res communis is the final substantive thread of discussion. These threads of discussion have dominant arguments. They do not, however, have definite conclusions, leaving the academic conjecture as to the validity of Antarctic territorial claims unresolved. Article IV of the Antarctic Treaty makes an urgent definitive answer unnecessary. However, with new issues emerging related to sovereignty in Antarctica, such as Marine Protected Areas, and more activity from growing Antarctic Treaty membership, public discourse consistently raises the issue. As we enter this new discursive environment, a review of the main arguments of the three substantive areas of legal scholarship is timely. This article will also attempt to identify the dominant attitudes regarding the validity of territorial claims to Antarctica.
Publisher: Wiley
Date: 16-05-2016
DOI: 10.1111/REC.12382
Publisher: Elsevier BV
Date: 03-2020
Publisher: Elsevier BV
Date: 02-2020
DOI: 10.1016/J.SCITOTENV.2019.134899
Abstract: The macrolide antibiotic roxithromycin is widely detected in varying aquatic environments, especially in the wastewater systems, as an emerging contaminant and leads to significant impacts on the microorganisms involved. In this study, the impact of a shock load of roxithromycin on waste activated sludge (WAS) anaerobic digestion was comprehensively investigated. The biochemical methane potential tests showed that the methane production from WAS anaerobic digestion was significantly inhibited by roxithromycin. With the dosage of roxithromycin increasing from 0 to 1000 μg/L, the maximum cumulative methane production decreased from 163.5 ± 2.6 mL/g VS to 150.9 ± 4.5 mL/g VS. In particular, roxithromycin inhibited the acidogenesis and methanogenesis in WAS anaerobic digestion, leading to the decreased methane production. The methanogenic archaea in the studied system mainly belonged to the genera of Methanoseata, Candidatus Methanofastidiosum and Methanolinea and their relative abundances also decreased with roxithromycin addition. The analysis of antibiotic resistance genes (ARGs) in the digested sludge indicated that the abundances of most ARGs detected in this study were increased with roxithromycin exposure, suggesting the potential of growing antibiotic resistance, which was probably caused by enhancing the effect of esterases, methylases and phosphorylases. This work reveals how roxithromycin affects the WAS anaerobic digestion and the change of ARGs in the anaerobic digestion with roxithromycin exposure, and provides useful information for practical operation.
Publisher: Elsevier BV
Date: 03-2020
DOI: 10.1016/J.WATRES.2019.115312
Abstract: A common operational status of granule-based reactor is the inevitable coexistence of sludge flocs. Such hybrid system could have a profound impact on nitrous oxide (N
Publisher: Informa UK Limited
Date: 03-07-2014
Publisher: Informa UK Limited
Date: 03-07-2015
Publisher: Elsevier BV
Date: 04-2020
DOI: 10.1016/J.JHAZMAT.2019.121694
Abstract: Nitrous oxide (N
Publisher: Informa UK Limited
Date: 06-2013
Location: Australia
No related grants have been discovered for Alexandre Santos.