
Evangelos MouchosUniversity of Bristol | UB · School of Geographical Sciences
Evangelos Mouchos
Doctor of Philosophy
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22
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Publications
Publications (22)
Phosphorus (P) is a key element which can contribute to the eutrophication of waters draining intensively farmed or populated catchments, driving adverse impacts on ecosystem and human health. An often overlooked source of P in permeable catchments is weathering of P-bearing minerals in bedrock. P release from primary minerals, present when the roc...
As a result of anthropogenic climate change there is a call to implement a rapid transition to Net-Zero greenhouse gas (GHG) emissions. However, reducing emissions is not going to be sufficient for climate stabilisation, and there is a need to remove CO2 from the atmosphere through carbon dioxide removal (CDR). CDR will require more rigorous Monito...
Implementation of the EU Green Deal and attainment of net-zero greenhouse gas emissions, requires policies supporting transition from traditional to clean energy sources, which will increase demand on mining key resources, that will likely increase CO2 emissions and waste production. Many previous studies have assessed the potential utilisation of...
Phosphorus (P) is a vital element for crop production but excessive amounts in freshwaters can lead to eutrophic conditions. Although a suite of regulations on the concentration of P in rivers exist under the EU Water Framework Directive (2000/60/EC) and EU Habitats Directive (92/43/EEC), there is a limited understanding on the natural baseline con...
Eutrophication, caused by excessive nutrient concentrations, is a major environmental issue and has significant
impacts on both aquatic ecosystems and human health. Phosphorus (P) is a key element that contributes to this
eutrophication response. As such, P concentrations are regulated under both the European Union Water Framework
Directive (EU WFD...
Phosphorus concentrations within water bodies have strict targets under the European Union Water Framework Directive. The headwaters of the Hampshire Avon in southern England, in the Vale of Pewsey is an agricultural catchment underlain by Upper Greensand (UGS), and flanked by Upper and Lower Chalk. P concentrations in the river are high, and work...
The Upper Greensand (UGS) aquifer, which outcrops in the Vale of Pewsey, is abundant in both primary and secondary calcium-phosphate minerals. The latter are mainly hydroxyapatite, which are hypothesised to precipitate into the pore space due to long-term P-rich fertiliser application on the overlying agricultural fields. These secondary mineral ph...
Eutrophication in freshwater ecosystems is an important environmental problem caused by nutrient enrichment from catchment sources. It can be caused by nutrient delivery from diffuse agricultural sources, resulting from high rates of nitrogen (N) and phosphorus (P) fertiliser application to agricultural land and intensive livestock farming, as well...
Resent research (2013) commissioned by the Environment Agency (EA) suggested that waters extracted from the Upper Greensand (UGS) aquifer had a high background phosphorus (P) concentration, linked to the presence of the mineral apatite in the UGS formation. This work has also suggested that P standards for waters from the UGS region should be highe...
Surface waters in the Hampshire Avon catchment contain high concentrations of phosphorus (P), which is an important pollutant contributing to adverse ecological impacts in its streams and rivers. The majority of riverine waters in the Upper Avon are drained from the Upper Greensand (UGS) aquifer in Pewsey Vale and from the surrounding Lower Chalk a...
The Parnassus-Giona karst bauxite deposits contain significant concentrations of rare earth elements (400-500 ppm). Preliminary results from a pilot leaching study show that between 19 and 47% of rare earth elements in the bauxite are easily leachable using ion exchange agents such as ammonium sulphate.
Emplacement of the Xanthi Plutonic Complex within the Rhodope Massif of N. Greece created an extensive metamorphic aureole around the plutonite. The aureole contains two areas of intense scapolitization in the contacts between granodiorite and biotite-gneiss and between monzonite and sandstone, the latter cross-cut by andesite dykes. This paper rep...
Rare-earth elements (REE) are viewed as 'critical metals' due to a complex array of production and political issues, most notably a near monopoly in supply from China. Red mud, the waste product of the Bayer process that produces alumina from bauxite, represents a potential secondary resource of REE. Karst bauxite deposits represent the ideal sourc...
Karst-bauxite deposits form as a result of the accumulation of residual clay minerals in depressions on a karst limestone surface, and their subsequent lateritic weathering. Rare earth elements (REE) become concentrated in the bauxite deposits due to crystallisation of authigenic REE-bearing minerals, accumulation of residual phases and the adsorpt...