Luiz Felippe De Alencastro

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Background, aim, and scope Current knowledge on environmental impacts of industrial activities in Romania, particularly persistent organic pollutants (POPs), indicates that environmental standards of the European Union are not systematically met. In our st ...

While plastic pollution in marine environments is getting better known and is the subject of a continuously growing number of publications, freshwaters still receive too little attention. Some studies worldwide focused on the nature and concentrations of microplastics in freshwater bodies, but data is so far very limited and fragmentary. Microplastics were studied in Swiss surface waters since 2012, first in order to show the reality of this contamination, and later to better understand its nature and exten

While plastic pollution in marine environments is getting better known and is the subject of a continuously growing number of publications, fresh- waters still receive too little attention. Some studies worldwide focused on the nature and concentrations of microplastics in freshwater bodies, but data is so far very limited and fragmentary. Microplastics were studied in Swiss surface waters since 2012, first in order to show the reality of this contamination, and later to better understand its nature and ext

In the 90’s, the discovery of high concentrations of plastic debris in the oceans generated interest and concern of general public as well as scientific community. Since, the accumulation of plastic debris in the North Pacific and North Atlantic gyres has been widely reported. Surprisingly, only few quantitative studies exist concerning the Mediterranean Sea. The purpose of this study was to examine the distribution, abundance and characteristics of surface micro (size 0.33 – 5.0 mm) and meso (size 5.0 – 50

Pesticides are widely used in gardening to maintain high yield, prevent diseases and control pests and rodents. Field surveys conducted in Burkina Faso have underlined the lack of knowledge regarding good agricultural practices and the use of unsuitable and obsolete pesticides. Improper packaging and high illiteracy rate in rural areas also hamper the compliance with recommended doses, application rates and safety measures provided on original manufacturer’s labels. Pesticides operators are persons who mix,

In this work, disinfection by 5 Advanced Oxidation Processes was preceded by 3 different secondary treatment systems present in the wastewater treatment plant of Vidy, Lausanne (Switzerland). 5 AOPs after two biological treatment methods (conventional acti ...

Polychlorinated biphenyl (PCB) organohalide-respiring communities from the efflux channel of a former Delor manufacturer in Eastern Slovakia were assessed using metagenomic, statistical and cultivation-adapted approaches. Multivariate analysis of environme ...

In this work, the use of Advanced Oxidation Processes (AOPs) against the degradation of an emerging contaminant has been subjected under systematic investigation. The optimization of treatment of the anti- depressant drug Venlafaxine (VFA) was performed, u ...

PCBs are persistent organic pollutants which have entered the environment through both use and disposal. The environmental dissemination of PCBs is complex and nearly global in scale, although their production was banned in the 80’s. Nowadays, specific bacterial species were shown to degrade these compounds by attacking the bond between the aromatic core and the flanking chlorine atoms. This anaerobic dechlorination process could be a possible way for environmental bioremediation. Nevertheless, at present t

A large fraction (47%) of the world's uranium is mined by a technique called “In Situ Recovery” (ISR). This mining technique involves the injection of a leaching fluid (acidic or alkaline) into a uranium-bearing aquifer and the pumping of the resulting sol ...

Pesticides have been proved to potentially cause multiple adverse health effects. The present study is part of a global project focusing on pesticides impacts on the environment and human health in gardening in Burkina Faso. In absence of existing monitoring, the present study aims at proposing a comprehensive indicator of occupational exposure to 48 pesticides identified during field campaigns. As a noninvasive and safe indicator of long term exposure, increasing interest is being observed in hair analysis

One aim of this study is to determine the impact of water velocity on the uptake of indicator polychlorinated biphenyls (iPCBs) by silicone rubber (SR) and low-density polyethylene (LDPE) passive samplers. A second aim is to assess the efficiency of perfor ...

The present work assesses human exposure to pesticides in vegetable-producing areas in Burkina Faso, using hair as an indicator. The study design includes a comparison between operators who are occupationally exposed while working in the fields and a refer ...

Many organic micropollutants present in wastewater, such as pharmaceuticals and pesticides, are poorly removed in conventional wastewater treatment plants (WWTPs). To reduce the release of these substances into the aquatic environment, advanced wastewater ...

This study focuses on the removal of 32 selected micropollutants (pharmaceuticals, corrosion inhibitors and biocides/pesticides) found in an effluent coming from a municipal wastewater treatment plant (MWTP) based on activated sludge. Dissolved organic mat ...

Emergence of antibiotic resistant (AR) bacteria and antibiotic resistance genes (ARGs) in the aquaculture industry is a growing issue for human health. Shrimp farmers in Viet Nam have free access to and make use of a wide variety of antibiotics to treat diseased animals or prevent pathogen outbreaks. However, and despite of the massive use of antibiotics, important commercial losses have crippled this industry recently. Notably, very little data are available about the effects of these substances on shrimp

Many organic micropollutants present in wastewater, such as pharmaceuticals and pesticides, are poorly removed in conventional wastewater treatment plants (WWTP). To reduce the release of these substances into the aquatic environment, advanced treatments are necessary and may be soon mandatory in Switzerland. Two advanced treatments were tested in pilot systems over more than one year at the municipal WWTP of Lausanne, Switzerland. The first pilot involves the ozonation of the effluent to oxidize organic su

This paper discusses the occurrence and spatial distribution of metals and persistent organic pollutants (POPs: including organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), Polybrominated diphenyl ethers (PBDEs), and polycyclic aromatic hy ...

Between 1920 and 1967, approximatively 8000 tons of ammunition waste was dumped into some Swiss lakes. Previous studies based on grab sampling revealed small traces of cyclotetramethylenetetranitramine (HMX), cyclotrimethylenetrinitramine (RDX) and pentaerythritoltetranitrate (PETN) in the water column of two studied lakes; however these researches showed that the ammunition waste at the lake bottom was likely not involved in that contamination. On the contrary, external sources (tributaries contaminated by

Luiz Felippe De Alencastro

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Chemical, Biological and Ecotoxicological Assessment of Pesticides and Persistent Organic Pollutants in the Bahlui River, in Romania

Micro-)plastic assessment in freshwater ecosystems and the environment

Sources and Fate of Microplastics in Swiss Surface Waters

Sources and fate of microplastics in Swiss surface waters

An evaluation of surface micro and meso plastic pollution in pelagic ecosystems of western Mediterranean Sea

Pesticides use in gardening areas in Burkina Faso and evaluation of the resulting risk for the operator using the new AOEM proposed by EFSA guidelines

Micropollutant degradation, bacterial inactivation and regrowth risk in wastewater effluents: Influence of the secondary (pre)treatment on the efficiency of Advanced Oxidation Processes

Divergent PCB organohalide-respiring consortia enriched from the efflux channel of a former Delor manufacturer in Eastern Europe

Solar photo-Fenton and UV/H2O2 processes against the antidepressant Venlafaxine in urban wastewaters and human urine. Intermediates formation and biodegradability assessment

WHO IS INTERESTED IN THE REDUCTIVE DECHLORINATION OF POLYCHLORINATED BIPHENYLS (PCBs)?

Microbial communities associated with uranium in-situ recovery mining process are related to acid mine drainage assemblages

Assessment of occupational exposure to pesticides with multi-class pesticide residues analysis in human hairs using a modified QuEChERS extraction method, case study of gardening areas in Burkina Faso

Effect of water velocity on the uptake of polychlorinated biphenyls (PCBs) by silicone rubber (SR) and low-density polyethylene (LDPE) passive samplers. An assessment of the efficiency of performance reference compounds (PRCs) in river-like flow conditions

Assessment of human exposure to pesticides by hair analysis: The case of vegetable-producing areas in Burkina Faso

Treatment of micropollutants in municipal wastewater: Ozone or powdered activated carbon?

Degradation of 37 emergent contaminants by UV and neutral fenton and photo-fenton in domestic wastewater effluent previously treated by activated sludge

Characterization of antibiotic multi-resistant bacteria and resistance genes in the effluent of an intensive shrimp farm (Long An, Viet Nam)

Elimination of micropollutants in wastewater treatment plants : Ozonation or activated carbon? Conclusions of a one-year pilot project

Trace metals and persistent organic pollutants in sediments from river-reservoir systems in Democratic Republic of Congo (DRC): Spatial distribution and potential ecotoxicological effects

Calibration and deployment of POCIS and Chemcatcher for the monitoring of explosives on lake-bottom sediments