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Composés de bismuth dans un mispickel aurifère
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Mineralizacja organizmu czlowieka zyjacego (mineralogia czlowieka)
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ISBN: 8304026201 Year: 1987 Publisher: Wroclaw ; Warszawa ; Krakow ; Gdansk... : Zaklad narodowy im. Ossolinskich, Wydawnictwo Polskiej Akademii Nauk (P.A.N.) = Institutum Ossilinianum,

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Mikrobieller Abbau von biologisch abbaubaren Werkstoffen in Erde und Kompost : ein Beitrag zum Nachweis der vollständigen biologischen Abbaubarkeit
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ISBN: 3905594277 Year: 2001 Publisher: Dubendorf : EMPA (Laboratoire fédéral d'essai des matériaux et de recherche),

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Environmental mineralogy II : university textbook
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ISBN: 9780903056328 Year: 2013 Publisher: London : European Mineralogical Union : Mineralogical society of Great Britain & Ireland,

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Fontainebleau, une forêt sous pressions

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Fontainebleau, une forêt sous pressions

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De aerobe mineralisatie van aminozuren in natuurlijke aquatische milieus : Proefschrift ter verkrijging van het doctoraat in de Wiskunde en Natuurwetenschappen
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Year: 1977 Publisher: Groningen

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Dissertation
Effect of biocomposites and biofertilisers on soil quality as part of a new approach to the valorisation of agricultural and agri-food waste
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Year: 2020 Publisher: Liège Université de Liège (ULiège)

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The world's population growth has led to the intensification of agriculture worldwide, which is accompanied by an increase in the use of chemical fertilisers and plastics, but also by huge food losses and waste. AGRIMAX is a European project funded by the European Union and whose goal is to valorise organic waste from the agro-food sector into different high value-added products such as packaging, food ingredients, biofertilisers, and films and pots, in a perspective of circular economy. The objective of this work was to assess the effects of films, pots and biofertilisers, developed in the project, on soil quality in order to validate and demonstrate the use of these products in agricultural applications.&#13;In order to meet this objective, laboratory incubation experiments were set up over a 12-week period to test the impact of five biocomposites and three composts on different soil biochemical parameters. Among the biocomposites tested, two consisted of natural fibres and fungal mycelium, while the other three were bioplastics formed by a polybutylene succinate matrix (PBS). Two of the composts were improved by the addition of plant growth promoting microorganisms (PGPMs) and the third was a reference compost. The biodegradation of the products was evaluated according to the evolution of carbon mineralisation and was monitored over the entire incubation period, as was the net release of mineral nitrogen. CaCl2 extractable phosphorus, soil microbial biomass (MBC), phospholipid fatty acids (PLFAs) and the enzymatic activities of dehydrogenase, beta-glucosidase and N-acetyl-beta-D-glucosaminidase were measured only after 12 weeks.&#13;The majority of the biocomposites showed a significant degradation after 12 weeks of incorporation into the soil and a net immobilisation of nitrogen. They also demonstrated their capacity to improve the soil microflora and its activities during biodegradation. The only major concern caused by biocomposites in this study was their impacts on nutrient availability, which could be problematic for microbial and plant growth if no external sources are supplied to the soil. Compost mineralisation was relatively low and not significantly different between the composts tested, demonstrating their potential to sequester carbon. In general, composts had little influence on all the parameters tested, probably related to the absence of vegetation and the short duration of the experiment. The results of this study suggest that the biocomposites and composts tested have the potential to maintain or promote soil microbial activities and thus maintain soil quality. These new material formulations are therefore promising for the development of a more sustainable agriculture where yesterday's wastes are tomorrow's resources.


Dissertation
Bioponics : Recylcing goat and chicken manure into nutrient solution for hydroponics through aerobic and anaerobic digestion
Authors: --- --- --- --- --- et al.
Year: 2020 Publisher: Liège Université de Liège (ULiège)

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La culture hydroponique a montré, depuis son renouveau dans l'agriculture urbaine, ses nombreux avantages en termes d'espace, de productivité et d'économie d'eau. Malheureusement, elle présente un inconvénient majeur : sa dépendance aux engrais minéraux. La bioponie est une technique innovante qui vise à remplacer les engrais minéraux dans les systèmes hydroponiques par des engrais organiques. Les engrais organiques, à l'opposé des engrais minéraux, peuvent être fabriqués partout dans le monde. Ils trouvent donc une utilité directe dans les pays en voie de développement.&#13;Ce travail a comme objectif d’évaluer les possibilités et l’efficacité d’un système de minéralisation de la matière organique permettant la création d’une solution nutritive à partir d’excréments de chèvres et de poules, élevages communément retrouvés en République Démocratique du Congo. Afin de réaliser cet objectif, plusieurs paramètres ont été étudiés comme la concentration en matière organique, le type de digestion (aérobie, anaérobie), la gestion du pH et le type de tampon utilisé. L'impact de ces paramètres sur le système a été analysé en étudiant le pH, la température, la CE et les concentrations de NPK libérés en solution. &#13;Les résultats de cette thèse de master ont permis la création d'un système de minéralisation fonctionnel de faible technicité qui permet la réplication du processus de digestion. Cependant, trois faiblesses ont également été identifiées : la chute des températures, les pertes de matière organique et la méthode d’échantillonnage. De plus, le processus de minéralisation effectué par le système n'est pas optimal. En effet, la nitrification de l'azote n'a pas eu lieu lors des expériences mises en place. En outre, l'équilibre entre les concentrations d'azote, de phosphore et de potassium n'est pas idéal pour une solution nutritive complète permettant une croissance optimale des plantes. En effet, les concentrations en NH4 et potassium sont respectivement 2 à 25 fois et 5 à 15 fois plus élevées que les valeurs retrouvées dans la littérature. A l’opposé, les concentrations en phosphore sont 5 à 15 fois plus faibles que les valeurs de la littérature. &#13;Cependant, malgré ces lacunes, plusieurs conclusions intéressantes ont été mises en évidence comme l'influence principale du type de matière organique. Le type de digestion et la gestion de pH semble également jouer un rôle mais celui-ci est moins clair que pour la matière organique. Le système créé ne permet donc pas la création d’une solution organique idéale pour la culture hydroponique. Cependant, ce travail fournit de nouvelles connaissances sur les systèmes bioponiques. D’autres recherches sont bien sûr encore à effectuer afin de pouvoir caractériser les processus et créer un système “low tech” de minéralisation de la matière organique performant. Since its revival in urban agriculture, hydroponics has shown its many advantages in terms of space, productivity, and water savings. Unfortunately, it has a major disadvantage: its dependence on mineral fertilisers. Bioponics is an innovative technique that aims to replace mineral fertilisers in hydroponic systems with organic fertilisers. Organic fertilizers, as opposed to mineral fertilizers, can be made anywhere in the world. They are therefore of direct use in developing countries.&#13;The objective of this work is to evaluate the possibilities and effectiveness of a system for mineralising organic matter to create a nutrient solution from the excrement of goats and chickens, which are commonly found in the Democratic Republic of Congo. To achieve this objective, several parameters were studied such as organic matter (OM) concentration, type of digestion (aerobic, anaerobic), pH management and type of buffer used. The impact of these parameters on the system was analysed by studying pH, temperature, EC and NPK concentrations released in solution.&#13;The results of this master thesis allowed the creation of a functional mineralisation system of low technicality that allows the replication of the digestion process. However, three weaknesses were also identified: the drop in temperature, the loss of organic matter and the sampling method. In addition, the mineralisation process carried out by the system is not optimal. Indeed, nitrogen nitrification did not take place during the experiments set up. Furthermore, the balance between the concentrations of nitrogen, phosphorus and potassium is not ideal for a complete nutrient solution for optimal plant growth. Indeed, the concentrations of NH4 and potassium are respectively 2 to 25 times and 5 to 15 times higher than the values found in the literature. Conversely, phosphorus concentrations are 5 to 15 times lower than the values found in the literature.&#13;However, despite these shortcomings, several interesting conclusions have been highlighted as the main influence of the type of organic matter. The type of digestion and pH management also seems to play a role, but this is less clear than for OM. Therefore, the system created does not allow the creation of an ideal organic solution for hydroponics. However, this work does provide new knowledge about bioponic systems. Further research is of course still to be carried out to characterise the processes and create a low-tech system for the mineralisation of OM.


Book
Le minéral et le vivant
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ISBN: 2213595100 9782213595108 Year: 1995 Publisher: Paris : Arthème Fayard,

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