Activated Carbons Impregnated with Na2S and H2SO4: Texture, Surface Chemistry and Application to Mercury Removal from Aqueous Solutions

The effects of treatment of an activated carbon with Sulphur precursors on its textural properties and on the ability of the complex synthesized for mercury removal in aqueous solutions are studied. To this end, a commercial activated carbon has been modified by treatments with aqueous solutions of Na2S and H2SO4 at two temperatures (25 and 140 °C) to introduce sulphur species on its surface. The prepared adsorbents have been characterized by N2 (-196 °C) and CO2 (0 °C) adsorption, thermogravimetric analysis, temperature-programmed decomposition and X-ray photoelectron spectroscopy, and their adsorption capacities to remove Hg(II) ions in aqueous solutions have been determined. It has been shown that the impregnation treatments slightly modified the textural properties of the samples, with a small increase in the textural parameters (BET surface area and mesopore volumes). By contrast, surface oxygen content was increased when impregnation was carried out with Na2S, but it decreased when H2SO4 was used. However, the main effect of the impregnation treatments was the formation of surface sulphur complexes of thiol type, which was only achieved when the impregnation treatments were carried out at low temperature (25 °C). The presence of surface sulphur enhances the adsorption behaviour of these samples in the removal of Hg(II) cations in aqueous solutions at pH 2. In fact, complete Hg(II) removal is only obtained with the sulphur-containing activated carbons.

Successional stage after land abandonment modulates fire severity and post-fire recovery in a Mediterranean mountain landscape

This study analyses the effect of successional stage after farmland terrace abandonment on post-fire plant recovery in a Mediterranean landscape. Specific objectives of the study were to (1) compare fuel characteristics and fire severity in three successional stages after farmland abandonment – dry grassland, dense shrubland and pine stands; (2) analyse the effect of pre-fire successional stage and fire severity on vegetation recovery and (3) analyse the relative vulnerability (i.e. potential for ecosystem shift and soil degradation) to wildfires of the successional stages. We assessed 30 abandoned terraces (15 unburned and 15 burned), with diverse successional stages, on the Xortà Range (south-east Spain). Post-fire recovery was measured 1, 4 and 7 years after fire. The successional stages varied in aboveground biomass, litter amount, vertical structure and continuity of plant cover, and flammability. Dry grassland showed the lowest fire severity, whereas no differences in severity were found between shrubland and pine stands. One year after fire, plant cover was inversely related to fire severity; this relationship attenuated with time after fire. Post-fire recovery of pine stands and shrubland led in both cases to shrublands, contributing to landscape homogenisation. The pine stands showed the largest changes in composition due to fire and the lowest post-fire plant recovery – a sign of high vulnerability to fire.

The autonomy of the EU legal order and the law-making activities of international organizations. Some examples regarding the Council most recent practice. Research Papers in Law 03/2012

[Introduction.] It is generally believed that while the principle of the autonomy of the EU legal order, in the sense of constitutional and institutional autonomy that is to say what concerns the autonomous decision-making of the EU, has been clearly strengthened by the most recent jurisprudence of the Court of Justice (eg. Moxplant3, Intertanko or the Kadi/Al Baraakat judgements or the Opinion 1/2009 of the CJEU etc.) as well as, in my opinion, in many aspects by the Treaty of Lisbon, it is still valid to add that the principle of a favourable approach, stemming from the Court jurisprudence, for the enhanced openness of the EU legal order to international law has remained equally important for the EU4. On the other hand, it should be also seen that in a globalized world, and following the increased role of the EU as an international actor, its indispensable and crucial role concerning the creation of world (legal) order in many policy fields ( for example let's think about the G20 issues, the global economic and financial crisis, the role of the EU in promoting and protecting human rights worldwide, the implementation of the multilateral or regional conventional law, developed in the framework the UN (e.g. in the field of agriculture or environment etc) or what concerns the Kyoto process on climate change or the conservation of marine biological resources at international level etc), it seems reasonable and justified to submit that the influence, for example, of the law-making activities of the main stakeholder international organizations in the mentioned policy-areas on the EU (especially on the development of its constantly evolving legal order) or vice-versa the influence of the EU law-making practice on these international organizations is significant, in many aspects mutually interdependent and more and more remarkable. This tendency of the 21st century doesn't mean, however, in my view, that the notion of the autonomy of the EU legal order would have been weakened by this increasing interaction between international law and EU law over the passed years. This contribution is going to demonstrate and prove these departuring points by giving some concrete examples from the most recent practice of the Council (all occuring either in the second half of 2009 or after the entry into force of the Lisbon Treaty), and which relate to two very important policy areas in the EU, namely the protection of human rights and the Common Fishery Policy.

The impact of demographic change and its challenges for the workforce in the European public sectors. Three priority areas to invest in future HRM. EIPA Working Paper 2012/W/01

European public sectors are particularly affected by the demographic challenge and an ageing and shrinking workforce. According to OECD statistics, over 30% of public employees of central government in 13 countries will leave during the next 15 years. Moreover, the public sector has as compared to the private sector to rely on a much older workforce, who will have to work longer in future. Against this background, European governments need to react and re-think major elements of current HR and organisational management in the public sector. Particularly the skills in age management should be improved in order to also maintain in future a highly productive, competent and efficient public sector and to ensure that public employees stay longer ‘employable’, ‘healthy’, ‘fit for the job’ and ‘up to the task’. The survey suggests some solutions by investing more in three priority areas in the field of HRM.

Enhancing the Brazil-EU Strategic Partnership: From the Bilateral and Regional to the Global. CEPS Paperback. October 2013

This book examines the Brazil-EU Strategic Partnership and is the result of a project that ‘twinned’ five sets of eminent Brazilian and European scholars to investigate themes of undoubted strategic significance: macroeconomics, trade policy, climate change, foreign policy and continental regionalism. Results show that while the two parties cannot claim to determine global policies, they can develop a specialist niche in global affairs, working together in the avant-garde of those searching for workable global solutions, seeking to bridge the frequent wide differences between the West and the rest, or North and South, or old powers and new ones.

Reflections on quasi-loss of nationality in comparative, international and European perspective. CEPS Liberty and Security in Europe No. 66/August 2014

This paper focuses on situations in which a person is said never to have had the nationality of a country, even though (s)he assumed (and in many cases the authorities of the country concerned shared that assumption) that (s)he possessed that nationality. Contrary to situations of loss of nationality, where something is taken away that had existed, quasi-loss involves situations in which nationality was never acquired. This contribution seeks to examine whether a person should under certain circumstances be protected against quasi-loss of nationality. In order to do so, the paper first maps out situations of quasi-loss in EU member states, describing typical cases in which a person never acquired the nationality of the country, although (s)he was at some time considered as a national. Drawing on this taxonomy, the paper attempts to uncover whether national, European and international laws offer some protection, and if yes, to which extent, for situations of quasi-loss. It concludes with outlining best practices which Member States should comply with in handling such situations.

The Enlarged European Union and its Eastern Neighbours: Problems and Solutions. OSW Point of View, October 2003

The EU enlargement is scheduled to take place in 2004. After this date, it should be a priority for the EU to develop a coherent and comprehensive policy towards its nearest neighbours, i.e. countries bordering the Member States, which cannot join the EU in the nearest future due to their location or weaknesses of their political and economic systems. There are at least three reasons for this. Firstly, good relations with neighbours will underlie the broadly understood security of the Community. Relations with the nearest neighbours will determine both military security of the EU (including the combating of terrorism) and its ability to prevent other threats such as illegal migration, smuggling, etc. Secondly, good economic relations with neighbours may contribute to the Member States' economic growth in the longer term. And finally, the EU's ability to develop an effective and adequate policy towards its nearest neighbours will demonstrate its competence as a subject of international politics. In other words, the EU will not be recognised as a reliable political player in the global scene until it develops an effective strategy for its neighbourhood.

Between Irrelevance and Integration? New Challenges to Diplomacy in the 21st Century and the Role of the EEAS. EU Diplomacy Paper No. 8, November 2014

The changing nature of diplomacy poses new challenges for diplomatic actors in the 21st century, who have to adapt their structures in order to remain relevant on the international stage. The growing interdependence and complexity of issues necessitate a more networked approach to diplomacy, while states retain their predominance in diplomacy. The main underlying challenge of modern diplomacy therefore requires finding a balance between traditional and new elements. This paper examines to what extent the European External Action Service (EEAS) meets the new challenges of modern diplomacy and copes with the diverse interests of the other stakeholders involved, namely the institutions and Member States of the European Union (EU). On the basis of a conceptual framework of modern diplomacy and an analysis of the different aspects of the EEAS’ structures, the paper argues that the EEAS does not fully meet the new challenges to diplomacy, since the interests of the other stakeholders put constraints on its free development. The latter therefore have to choose between irrelevance and integration with regard to EU foreign policy and the future of the EEAS.

Toward international peace and security: Addressing the challenge of nuclear proliferation in a globalized world. ACES Working Papers, August 2010

With a growing number of threats to governance in the international system that result from globalization and technological innovation, it is no surprise that states have come to rely more heavily on each other and the global community for support. While the EU is partially constrained by the ultimate outcome of its own integration process, limited knowledge on this issue, and the national interests of its Member States, other governments are also experiencing difficulty in domestic implementation of international resolutions. To better understand the impact of the most recent sanctioning efforts, this paper will explore the development of the non-proliferation regime, examine implementation mechanisms of non-proliferation agreements, and analyze the impact of increased cooperation among states to thwart the spread of WMD technology and material. Case studies of unilateral measures undertaken by the US and EU against Iran will provide insight into the political and economic implications of economic sanctions from individual governments. New and emerging methods for limiting rogue states and non-state actors from acquiring the means to develop WMD will also be discussed in an effort to further discussion for future policy debates on this critical topic.

Social Content of the International Sphere: Symbols and Meaning in Franco-German Relations, CES Germany & Europe Working Papers, No. 02.2, 2002

“The Franco-German friendship is rich in memories and gestures that are at once important and symbolic, and that characterize the exceptional nature of the relationship between our two countries,” reflects former French economics minister and European Commission President Jacques Delors. Such symbolic acts and joint memories are not primarily about cooperation in specific instances. Rather, more generally, they denote what it means to act together. They lend significance to a relationship; they signify what is “at stake,” or what it is “all about.” They are about a deeper and more general social purpose underlying specific instances of cooperation. They are about the value and intrinsic importance that social relations incorporate. Symbols contribute to the institutionalization of social meaning and social purpose in dealing with one another. In this paper I clarify the concept of “predominantly symbolic acts and practices among states,” systematically explore such acts for the bilateral Franco-German relationship between the late 1950s and the mid-1990s, and scrutinize the specific meaning and effects that these practices have helped to generate and perpetuate.

Costs and Benefits of RES in Europe up to 2030. DIA-Core Policy Brief, 24 June 2014

Introduction. This Policy Brief follows-up on the DIA-CORE Policy Brief on “Assessing costs and benefits of deploying renewables”, dated 26 September 2014, which highlighted the complexities in making a comprehensive and appropriate assessment of costs and benefits resulting from an increased use of renewable energy sources (RES). It distinguished the different types of effects into system-related effects, distributional effects and macro-economic effects, and looked at the related data requirements, which need to be comprehensive and standardised. This DIA-CORE Policy Brief uses the tools proposed in the previous Policy Brief to estimate the effects on Member States of reaching the EU-wide RES target of 27% of the EU’s energy consumption by 2030. This allows to draw some conclusions on the differentiated impacts across Member States, and the potential implications for an effort sharing approach. It also assesses whether a higher ambition level could be beneficial. The paper also takes into account the implications of national policy frameworks and highlights the importance of reforms to reduce the costs of RES adoption.

Enhancing the Common European Asylum System and Alternatives to Dublin. CEPS Liberty and Security in Europe No. 83/September 2015

Upon request by the LIBE committee, this study examines the reasons why the Dublin system of allocation of responsibility for asylum seekers does not work effectively from the viewpoint of Member States or asylum-seekers. It argues that as long as it is based on the use of coercion against asylum seekers, it cannot serve as an effective tool to address existing imbalances in the allocation of responsibilities among Member States. The EU is faced with two substantial challenges: first, how to prevent unsafe journeys and risks to the lives of people seeking international protection in the EU; and secondly, how to organise the distribution of related responsibilities and costs among the Member States. This study addresses these issues with recommendations aimed at resolving current practical, legal and policy problems.

Heads buried in the sand: member states block solutions to the refugee crisis. EPC Commentary, 15 September 2015

Yesterday’s meeting of Interior Ministers demonstrated that the EU’s asylum and immigration policy remains incomplete. This is mainly due to the member states’ inability to plan ahead, their reluctance to adopt binding common rules – considered as a violation of their sovereignty – and their central position in the implementation of EU rules.

The International Telephone and Telegraph Company and Chile, 1970-71; report to the Committee on Foreign Relations, United States Senate.

"June 21, 1973." -- Cover