Background: An increasing frequency of massive flooding along the lower Yangtse River in China ended in a disastrous catastrophe in summer 1998 leaving several thousand people homeless, more than 3.600 dead and causing enormous economic damage. Inappropriate land-use techniques and large scale timber felling in the water catchment of the upper Yangtse and its feeder streams were stated to be the main causes. Immediate timber cutting bans were imposed and investigations on land use patterns were initiated by the Chinese Government. The Institute for World Forestry of the Federal Research Centre for Forestry and Forest Products was approached by the Yunnan Academy of Forestry in Kunming to exchange experiences and to cooperate scientifically in the design and application of appropriate afforestation and silvicultural management techniques in the water catchment area of the Yangtse. This cooperation was initiated in 1999 and is based on formal agreements in the fields of agrarian research between the German and Chinese Governments. Objectives: The cooperation was in the first step focussing on the identification of factors which caused the enormous floodings. After their identification measures of prevention were determined and put into practice. In this context experiences made in past centuries in the alpine region of central Europe served as an incentive and example for similar environmental problems and solutions under comparable conditions. Relevant key questions of the cooperation project were: - Analysis of forest related factors influencing the recent floodings of the Yangtse, - Analysis and evaluation of silvicultural management experiences from central Europe for know-how transfer, - Evaluation of rehabilitation measures for successful application in Yunnan, - Dissemination of knowledge through vocational training. Results: - Frequent wild grazing of husbandry is a key factor for forest degeneration beyond unsustainable timber harvests, forest fires and insect calamities leading to increased water run-off in the mountainous region of Yunnan; - Browsing of cattle interrupts succession thus avoiding natural regeneration and leaving a logging ban ineffective; - Mountain pasture in the Alps had similar effects in the past in central Europe. The introduction of controlled grazing has led to an ecologically compatible coexistence of pasture and ecology. Close-to-nature forestry can have positive effects in this sensitive environment. - Afforestation with site adopted broadleaves and coniferous tree species was implemented on demonstration level using advanced techniques in Yunnan.
Background: Ghanas transition forests, neighbouring savannahs and timber plantations in the Ashanti region face a constant degradation due to the increased occurrence of fires. In most cases the fires are deliberately set by rural people for hunting purposes. Main target is a cane rat, here called grasscutter (Thryonomys swinderianus), whose bushmeat is highly esteemed throughout the country. The animal is a wild herbivorous rodent of subhumid areas in Africa south of the Sahara. The grasscutter meat is an important source of animal protein. Existing high-value timber plantations (mainly Teak, Tectona grandis) are affected by fires for hunting purposes. Thus resulting in growth reduction, loss of biomass or even complete destruction of the forest stands. It became obvious that solutions had to be sought for the reduction of the fire risk. Objectives: Since 2004 the Institute for World Forestry of the Federal Research Centre for Forestry and Forest Products, Hamburg, Germany is cooperating with a Ghanaian timber plantation company (DuPaul Wood Treatment Ltd.) the German Foundation for Forest Conservation in Africa (Stiftung Walderhaltung in Afrika) and the Center for International Migration with the purpose to improve the livelihood of the rural population in the surroundings of the forest plantation sites and simultaneously to safeguard and improve the timber plantations. The introduction of grasscutter rearing systems to local farmers accompanied by permanent agricultural and agroforestry practices appeared to be a promising approach for the prevention of fires in the susceptible areas. Additionally a functioning grasscutter breeding system could contribute to the improvement of food security, development of income sources and the alleviation of poverty. The following measures are implemented: - Identification of farmers interested in grasscutter captive breeding, - Implementation of training courses for farmers on grasscutter rearing, - Delivery of breeding animals, - Supervision of rearing conditions by project staff, - Development of a local extension service for monitoring activities, - Evaluation of structures for grasscutter meat marketing. Results: After identification of key persons for animal rearing training courses were successfully passed and animals were delivered subsequently. Further investigations will evaluate the effects of the grasscutter rearing in the project region. This will be assessed through the - Acceptance of grasscutter rearing by farmers, - Success of the animal caging, - Reproduction rate, - Meat quality, - Marketing success of meat, - Reduction of fire in the vicinity of the timber plantations, - Improvement of peoples livelihood.
Zusammensetzung und Menge der organischen Bodensubstanz (OBS) werden durch die Landnutzungsform beeinflußt. Die OBS läßt sich nach ihrer Abbaubarkeit und nach ihrer Löslichkeit in verschiedene Pools einteilen. So kann die wasserlösliche organische Bodensubstanz (DOM) als Maßzahl für die abbaubare OBS herangezogen werden. Mit Natriumpyrophosphat-Lösung als Extraktionsmittel läßt sich ein weit größerer Anteil der OBS erfassen, da der stabilisierende Bindungsfaktor zwischen OBS und Bodenmineralen entfernt wird. Extrahiert man zuerst mit Wasser und anschließend mit Natriumpyrophosphat-Lösung, erhält man im letzten Schritt den schwer abbaubaren OBS-Anteil. Über die funktionelle Zusammensetzung der organischen Substanz dieser Pools und deren Abhängigkeit von Landnutzungsformen ist relativ wenig bekannt. Ziel der geplanten Untersuchung ist es, den Pool der löslichen abbaubaren und schwer abbaubaren OBS zu quantifizieren und deren funktionelle Zusammensetzung mittels FT-IR Spektroskopie zu erfassen. Die so gewonnenen Daten sollen der Validierung von Soil Organic Matter Turnover modellen (z.B. Roth 23.6) dienen und die im Modell berechneten Pools um einen qualitativen Term ergänzen. In Zusammenarbeit mit anderen Arbeitsgruppen sollen im DFG-Schwerpunktprogramm 1090: ;Böden als Quelle und Senke für CO2 die Pools der löslichen abbaubaren und schwer schwer löslichen, schwer abbaubaren organischen Bodensubstanz (OBS) quantifiziert, die funktionelle Zusammensetzung dieser Pools mittels FT-IR Spektroskopie erfasst und Abbaubarkeit der erhaltenen Extrakte überprüft werden, um Mechanismen, die zur Stabilisierung der OBS führen, aufzuklären.
Fragile arid and semi-arid ecosystems are in urgent need of integrated conservation approaches that can contribute significantly to prevent and reduce the widespread on-going land degradation and desertification processes, such as erosion, flooding, overgrazing, drought, and salinization. The DESIRE project will establish promising alternative land use and management conservation strategies based on a close participation of scientists with stakeholder groups in the degradation and desertification hotspots around the world. This integrative participatory approach ensures both the acceptability and feasibility of conservation techniques, and a sound scientific basis for the effectiveness at various scales. DESIRE employs a bottom up approach such as is favoured by the UNCCD: i) degradation and desertification hotspots and stakeholder groups will be identified in all countries surrounding the Mediterranean, and in 6 external nations facing similar environmental problems, ii) desertification indicator sets will be defined in a participatory approach and a harmonized information system will be constructed to organize socio-economic and geoinformation data and tools for active dissemination; iii) new and existing conservation strategies will be defined with the stakeholder communities; iv) these strategies will be implemented in the field, and monitored and modeled to quantify their effectiveness at various scales; v) the results will be extrapolated using both the indicator sets, geoinformation data, and integrated modeling systems combining socio-economic and environmental aspects; vi) finally the results will be translated to a series of practical guidelines for good agricultural practices and environmental management, which will be disseminated to practitioners, agricultural extensionists, governmental authorities, policy makers, NGOs, land users, land owners, and local communities. Prime Contractor: Alterra B.V.; Wageningen; Netherlands.
Phosphorus and nitrogen are valuable and should not be wasted or even worse recycled to the environment. An important resource in the sludge is nutrients which can be utilized through using sludge as fertilizer in the agriculture. Wastewater and excreta contain valuable nutrients that can be used in agriculture and aquaculture. Most of the nutrients, like phosphorous (P) and nitrogen (N), that a person consumes end up in the excreta. Nutrients are needed in developing countries as much as developed ones. Therefore, they should not be wasted. In nature there is no waste, all products of living things are used as raw materials by others (Esrey et al, 1998). Ecological sanitation systems (also called ecosan') are closed-loop systems, which treat human excreta as a resource. In this system, excreta are processed on site until they are free of pathogenic (disease-causing) organisms. Afterwards, sanitized excreta are recycled by using them for agricultural purposes. Key features of ecosan are therefore: - prevention of pollution and disease caused by human excreta; - treatment of human excreta as a resource rather than as a waste product; and - recovery and recycling of the nutrients. The problem of nutrient recovery from municipal sewage or excess sludge is not a new problem. In the literature, several papers have addressed the recovery of ammonia or phosphate from industrial and domestic wastewater, but not much with black water. So far many attempts have been made to control the process of self-deposition and recover nutrients as a fertilizer, which can be used directly for agricultural purposes as ecological sanitation advises. The aim of this research project is to find out further treatment methods of digested black water for extraction of valuable nutrients and convert them to dry matter and find solutions for dense urban areas and make usable compounds easier transportable.
The Nametech project is funded under the 7th European Framework Programme and harnesses benefits of nanotechnology to bring about improvements in membrane filtration for advanced water treatment. The general objective is to strengthen the European membrane market by making nanotechnology available to large scale European membrane manufactures. The projects brings together all required elements to enable the transfer of nanotechnology towards the field of water treatment. The broad engineering and application know-how of the partners has been brought together to realize cost reduction and process intensification strategies. The starting point of the project is development of the criteria for the identification of nanoparticles with relevance for water treatment applications. After identification and selection of appropriate nanoparticles, attachment of particles to membrane surfaces has been investigated. Another approach examined in the project is to prepare membranes from homogeneous casting solution containing nanoparticles. The major challenge is to identify binders/compounds keeping the nanoparticles stabilized in the casting solution and ensuring compatibility between the polymer, solvent and nanoparticles in order not to disturb the membrane forming process and ensure a desired distribution of built-in particles thereby inducing the maximal nanoparticles activity. Subsequently, laboratory module scale filtrations of both synthetic and real feed are envisaged to asses the filtration performance in terms of permeability and fouling propensity, as compared to unmodified membranes.
The scope of sewage treatment is changing: Up to date municipal wastewater treatment plants (WWTP) were seen as an end-of-pipe treatment just before discharge, having the aim to avoid eutrophication and hygienic health hazard in surface water. Due to the global demographic trends as well as new legislations (e.g. the Water Framework Directive, WFD) increased focus is put on quantity and quality of effluents: WWTP are more and more seen as interface between sanitation and environment, delivering resources to the environment or human activities (recharge of drinking water reservoirs, recycling of nutrient, efficient energy use). This focus shift has implications on the quality goals set for WWTP products: land requirement, effluent N, P load, effluent pathogen load, energy optimization. New focus: nutrient recycling, micropollutants: ecotoxicology of the effluent energy production. NEPTUNE is focusing on technology solutions allowing to meet present and future standards via upgrading of existing infrastructure (new control strategies with online sensors; effluent upgrading with oxidation, activated carbon or wetland treatment; sludge processing for safe nutrient recycle) as well as via new techniques (fuel cell applications; new oxidative agents; polymer production from sludge). By including pathogen and ecotoxicity aspects into life cycle assessment studies (LCA), the project is helping improve the comparability of various technical options and propose a suitability ranking. The new focus given by the WFD and the emerging interest on organic (eco-)toxic compounds requires characterizing treated effluent and treatment technologies concerning ecotoxicologic aspects and micropollutants. The project is contributing to this discussion by ecotoxicity assessment and micropollutant fate studies.
DE-LIGHT Transport is a multi-national initiative supported by the European Commission's Framework 6 programme that is investigating the design and manufacturing of lightweight sandwich structures in the marine, rail and freight container industries. Sandwich materials, consisting of two thin facings separated by a low density core, can be used to produce structures that are both light and stiff. They also offer opportunities for parts reduction through design integration, improved surface finish and lower assembly and outfitting costs. DE-LIGHT Transport aims to further promote the use of sandwich materials by developing key technologies that will support the practical realisation of robust sandwich designs. Specifically, this will include: - A multi-material sandwich design tool. Previous work has often focussed on a particular type of sandwich construction (e.g. laser-welded steel or composite). This has tended to yield niche results with limited applicability. DE-LIGHT Transport will implement a more generic design approach that will allow the evaluation and optimisation of a wide range of material and structural mixes according to the requirements of a given application. - Strategies for joining, assembly and outfitting ? the bringing together and integration of separate sandwich panels and/or sub-components to produce finished structures. In particular, modular approaches for the off-line production of sandwich assemblies to exploit economies of scale will be developed. Testing and validation procedures ? to provide accurate and reliable methods of determining fitness for purpose. The above technologies will be demonstrated within the project through the design and manufacturing of six prototype structures. These will include deck and deckhouse structures for ships, a rail vehicle cab, and a freight container. Risk-based design principals will be applied throughout to ensure that the new designs comply with existing regulatory frameworks. It is anticipated that DE-LIGHT Transport will provide designers of vehicles and vessels with practical approaches to the implementation of sandwich solutions as an alternative to traditional stiffened-plate designs. In this way, the benefits of sandwich construction will be unlocked for a wider range of applications.
The main objective of the project is to investigate, assess and enhance the potentiality of promising technological options (i.e., technologies, processes and concepts) for the treatment of industrial wastewater with the specific aim to provide tailor-mad e solutions to end-users for a wide range of wastewaters. Such solutions will be essentially based on the optimised integration of the investigated options and on technological improvements with respect to treatment system components, operation and control. Referring to the investigated options and the envisaged technological solutions, the project's goals are: -Investigating and enhancing the performances of promising wastewater treatment options such as aerobic granulation, integrated advanced oxidation processes (AOP) and membrane-based hybrid processes -Achieving fundamental and technological knowledge advancements necessary for advanced wastewater treatment application in different industrial sectors -Assessing the economic and environmental sustainability of promising wastewater treatment options -Developing integrated tailor-made solutions for end-users in different industrial sectors -Transferring the developed know-how to potential end-users inside and outside the project -Favouring their actual implementation for enhancing the EU Water Industry competitiveness. In order to achieve such goals, coordinated research activities will be carried out on selected options treating different wastewater. The experiences from such activities will be merged to define tailor-made solutions for end-users in different industrial sectors. A major goal will be the definition of treatment needs and framework conditions for a wide range of wastewaters based on the specific features of the options investigate d (i.e., aerobic granulation, AOP combined processes, membrane contactors, membrane chemical reactors). Prime Contractor: Consiglio Nazionale delle Ricerche, Department of Bari, Water Research Institute, Roma, Italien.
Graffiti is a major, increasing danger to architectural heritage materials, generating also a negative social connotation. Apart from aesthetics aspects, interactions of graffiti with substrate, as well as cleaning procedures, threaten historical substance. Monuments made of stone, bricks and mortars are menaced by this problem because very often, porous natural materials were employed. Two major kind of coatings are currently being used for protecting surfaces against graffiti: permanent and sacrificial. First kind is suited for materials with low porosity, as metals and concrete, but does not fit the requirements for porous ancient materials. Second one is sometimes used in monuments, but it is not an appropriated solution, since removal procedures can damage substrates somewhat. Hence, effective solutions for anti-graffiti systems is an urgent social and technical necessity. The main objective of this project is to develop novel conservation coatings suited for protecting materials of historical monuments, based on a similar structure of ancient protein coatings, avoiding the disadvantages of currently used antigraffiti coatings . This develop is based in a totally new formulation made by complexation of polyampholytes with polymeric amines modified by fluorocarbon residues. These will be a new generation of antigraffiti coatings, specifically suited for the protection of monuments, which after further development, could be commercialised and applied by SME's involved in this market, thus increasing the competitiveness of these companies. Main characteristics of these products are: - Low surface energy - Permanent under out-door conditions - Reversible to specially designed mild cleaning systems - Permeable to water-vapour - Impermeable to liquid water - Transparent The objective will be achieved by means of research activities, such as: definition of requirements and test procedures, design of new anti-graffiti system, characterisation of substrates, comparative assessment of currently used and the new protection and conservation strategies and evaluation of the technical and socio-economic impact of the new anti-graffiti on cultural heritage materials. Prime Contractor: Fundacion Labein; Derio; Spain.
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