SEGH Articles

The SEGH 2016 conference was a great success!!

26 January 2017
SEGH Brussels
 
110 delegates from 22 countries attended the meeting. Amongst them, 34 students actively participated, whom 5 received an EAG grant (covering the registration fee). 114 abstracts were reviewed by the scientific committee and accepted after potential corrections. The scientific programme was intense, including 59 talks and 55 posters. 
 
Four keynote speakers were invited: Prof. Reto Gieré from University of Pennsylvania (USA) , Prof. Montserrat Filella from Université de Genève (Switzerland), Prof. Elijah Petersen from NIST (USA), Prof. Vincent Balter from Ecole Normale Supérieure de Lyon (France) covering a large range of subjects like : Assessment of environmental and health impacts of airborne particulate matter;Nanoparticle reference materials; Criticity of trace elements in the current and future environments; Cancer-driven (Cu, Zn) isotopic fractionation.
A field-trip organized in the Liège's area ended the conference: the visit of the peat bogs from the Hautes-Fagnes - precious archives of the atmospheric deposits through the Holocene, was followed by the visit of the slag heaps surrounding Liège, which record a strong fingerprint of the metallurgical industries but currently develop a natural new ecosystem with specific metal-tolerant plants.
 
Three awards were distributed at the end of the event to: 
- Sebastiaan van de Velde (SEGH Best Oral)
- Alice Jarosikova (SEGH Best Poster)
- T. Gabriel Enge (Malcolm Brown Award for outstanding young scientist)
 
See the SEGH website  http://segh.net/home/ for more details and articles on the works performed by the SEGH 2016 young scientist medalists.
 
The city of Brussels was extremely welcoming with a sunny weather and the conference venue was a convivial open space where delegates have deeply appreciated to lunch, discover Belgian beers, and overall initiate lively scientific discussions. 
 
In summary, the SEGH 2016 conference in Brussels has reached its initial objectives and even exceeded them; this annual conference provided a real scientific platform of high-quality for exchanges between complementary environment and health related disciplines: geochemistry, ecotoxicology, earth sciences, medicine, epidemiology, laboratory technologies and methodologies.
 
This would not have been possible without the organisation team from ULB (Université Libre de Bruxelles) and the precious contributions from all the participants. Thank you very much to all delegates!
 
Looking forward to seeing you in China in 2017.
 
Nadine Mattielli.
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Latest on-line papers from the SEGH journal: Environmental Geochemistry and Health

  • Membrane fouling control by Ca 2+ during coagulation–ultrafiltration process for algal-rich water treatment 2019-04-16

    Abstract

    Seasonal algal bloom, a water supply issue worldwide, can be efficiently solved by membrane technology. However, membranes typically suffer from serious fouling, which hinders the wide application of this technology. In this study, the feasibility of adding Ca2+ to control membrane fouling in coagulation–membrane treatment of algal-rich water was investigated. According to the results obtained, the normalized membrane flux decreased by a lower extent upon increasing the concentration of Ca2+ from 0 to 10 mmol/L. Simultaneously, the floc particle size increased significantly with the concentration of Ca2+, which leads to a lower hydraulic resistance. The coagulation performance is also enhanced with the concentration of Ca2+, inducing a slight osmotic pressure-induced resistance. The formation of Ca2+ coagulation flocs resulted in a looser, thin, and permeable cake layer on the membrane surface. This cake layer rejected organic pollutants and could be easily removed by physical and chemical cleaning treatments, as revealed by scanning electron microscopy images. The hydraulic irreversible membrane resistance was significantly reduced upon addition of Ca2+. All these findings suggest that the addition of Ca2+ may provide a simple-operation, cost-effective, and environmentally friendly technology for controlling membrane fouling during coagulation–membrane process for algal-rich water treatment.

  • Evaluation of the raw water quality: physicochemical and toxicological approaches 2019-04-13

    Abstract

    Environmental degradation has increased, mainly as a result of anthropogenic effects arising from population, industrial and agricultural growth. Water pollution is a problem that affects health, safety and welfare of the whole biota which shares the same environment. In Goiânia and metropolitan region, the main water body is the Meia Ponte River that is used for the abstraction of water, disposal of treated wastewater and effluents. In addition, this river receives wastewater from urban and rural areas. The aim in this present study was to evaluate the quality of raw water by some physical, chemical and toxicological tests. The physicochemical results found high levels of turbidity, conductivity, aluminum, phosphorus and metal iron, manganese, copper and lithium when compared to the standards of the Brazilian legislation. The values found of toxicity demonstrated a high degree of cytotoxicity and genotoxicity. Therefore, it was concluded that the Meia Ponte River has been undergoing constant environmental degradation, causing the poor quality of its waters. Thus, measures for the prevention and recovery should be adopted for the maintenance of the Meia Ponte River.

  • Review of the nature of some geophagic materials and their potential health effects on pregnant women: some examples from Africa 2019-04-11

    Abstract

    The voluntary human consumption of soil known as geophagy is a global practice and deep-rooted in many African cultures. The nature of geophagic material varies widely from the types to the composition. Generally, clay and termite mound soils are the main materials consumed by geophagists. Several studies revealed that gestating women across the world consume more soil than other groups for numerous motives. These motivations are related to medicinal, cultural and nutrients supplementation. Although geophagy in pregnancy (GiP) is a universal dynamic habit, the highest prevalence has been reported in African countries such as Kenya, Ghana, Rwanda, Nigeria, Tanzania, and South Africa. Geophagy can be both beneficial and detrimental. Its health effects depend on the amount and composition of the ingested soils, which is subjective to the geology and soil formation processes. In most cases, the negative health effects concomitant with the practice of geophagy eclipse the positive effects. Therefore, knowledge about the nature of geophagic material and the health effects that might arise from their consumption is important.