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ENVIRONMENTAL SCIENCES

EARTH SYSTEMS
RADIOACTIVITY
CULTURAL HERITAGE 

AREAS OF RESEARCH

ENVIRONMENTAL RADIOACTIVITY AND RADIOECOLOGY

OBJECTIVE MANAGER:
José Alberto Corisco

GEOPROCESSES, STRATEGIC GEOLOGICAL RESOURCES AND GLOBAL CHANGE

OBJECTIVE MANAGER:
Rosa Marques

ENVIRONMENT AND NEW ENERGY SOURCES - ANTHROPOGENIC IMPACT, EVALUATION, TREATMENT AND RECYCLING

OBJECTIVE MANAGER:
Nuno Canha

CULTURAL HERITAGE - MATERIALS AND CONTEXTS - ENHANCEMENT AND PRESERVATION

OBJECTIVE MANAGER:
Pedro Valério

OUTPUT 2016

68 papers in peer-reviewed journals, 
66 book chapters, 
3 proceedings, 
5 PhD, 1 MSc and 1  graduated completed theses, and 2 patents. 

The research has been supported by European, FCT and bilateral projects. The research team has participated and/or organized conferences, workshops and national or international training courses and lectures. 
During 2016 the team has also prepared and submitted several common projects under national, European and other international calls.

RESEARCH HIGHLIGHTS

The following major achievements in 2016 are highlighted.

NATURAL RADIONUCLIDES AVAILABILITY IN NORM SITES


Assessment of radionuclides transfer from phosphogypsum (PG) to herbaceous plants and mosses revealed the ability of mosses to accumulate 226Ra and 210Pb to several fold higher concentration than in the underlying substrate. Extraction experiments showed circa 2% bioavailability of 226Ra from PG.

IRON SPECIATION IN VOLCANIC SOILS AND WEATHERING MECHANISMS UNDER SEMI-ARID CLIMATE

Iron speciation using Mössbauer spectroscopy on topsoils of Cape Verde Islands revealed a correlation between the fraction of nano-sized iron oxides and trace elements relevant to plant nutrition and to the environmental health. No goethite was detected, which is a significant finding for the understanding of weathering mechanisms under semi-arid climate

PRODUCTION OF METHANOL USING CO2 AND CH4 AS RAW MATERIALS

Production of methanol is achieved in a continuous high pressure flow reactor using methane, carbon dioxide and hydrogen as reagents at 250 oC, 25-80 bar (GHSV = 40000 mL CO2/g.h). The results confirm the potentialities of the bimetallic oxides and intermetallic compounds containing f-block elements as catalysts, especially when compared with the behavior of a commercial Cu methanol synthesis catalyst.

LUMINESCENCE DATING OF CULTURAL HERITAGE CERAMIC SAMPLES: INNOVATIVE APPROACHES IN DATA TREATMENT

Different protocols tested by using absorbed and regenerative luminescence measurements applied to single and multiple aliquots of micro samples of ceramics fractions enriched in quartz grains, showed that single aliquot regenerative-thermally stimulated luminescence (SAR-TSL) protocol is the most appropriate for the determination of the absorbed dose for the luminescence age calculation