For global warming prevention, sequestration mechanism of carbon in soil used with charcoal (biochar) was studied, and analysis method of charcoal carbon amount in the soil was established quantitatively
. By using charcoal carbonizedfrom biomass materials and food waste compost in the farmland, carbon sequestration for long period and increase of microorganisms in the soil are expected. Food waste compost was made in composting factory. FIGURE 1 shows flow chart of preparing food waste compost with charcoal in thefactory. Wood charcoal powder and compost made from food garbagewere used to the red-clayey soil farm land located in the suburbs ofTokyo.As aggregate of the soil can be developed with microorganisms in thesoil, adenosine tri-phosphate (ATP) concentration in the soil wasmeasured. The structure of the aggregate was estimated with the wetscreen method. The mean weight diameter (MWD) of the soil wascalculated with particle diameter (mm) and the integration number ofthe aggregate (%).As shown in FIGURE 2, the ATP concentration increased in the soilused with the charcoal and the compost, and about the half value ofwhich was observed in the soil with compost and without charcoal. There no change was observed in the soil without the addition.The MWD value of the soil was about 30 before the test. FIGURE 3 shows that after ten days using the charcoal and the compost, the MWD value increases to 58. In the soil with thecompost and without charcoal, the MWD increased to 48. It was found that the soil was aggregated withmicroorganisms in the soil. The aggregation of the soil in farmland was developed by using the charcoal and the compost. It was suggested that the soil was aggregated with microorganisms proliferated on the surface of the aggregate in the soil.
|Copyright:||© European Compost Network ECN e.V.|
|Quelle:||Orbit 2012 (Juni 2012)|
|Preis inkl. MwSt.:||€ 7,00|
|Autor:||Shuji Yoshizawa |
|Artikel weiterleiten||In den Warenkorb legen||Artikel kommentieren|
Comparison of Batch and semi-comtinuous acidogenic process of Food waste anaerobic digestion
© European Compost Network ECN e.V. (6/2012)
During food waste anaerobic digestion (AD), higher rate of acidogenesis than the methanogenesis affects the stability of the reactor in a single-phase AD system. To decouple the acidogenesis from methanogenesis with the purpose to optimize each reactor separately, in recent years, a two-phase AD is proposed, especially to treat high solid food waste. In the two-phase system, leach bed reactor (LBR) as the first phase, i.e. hydrolysis-acidogenesis, of the two-phase system has gained more attention due to its operational simplicity and efficiency for organic wastes with high solids content. Further Authors: S.Y. Xu - Hong Kong Baptist University
Compostability of Plastics and packaging: Standards on biodegradability and ecotoxicity
© European Compost Network ECN e.V. (6/2012)
The first attempts to define a standard on requirements for plastics and packaging suitable to composting date back tothe middle of 90s, when ORCA (Organic Reclamation and Composting Association) in Europe and ISR-ASTM(Institute for Standard Research of ASTM) in the USA, started fundamental preliminary works. Official standardspecifications were developed shortly after. ASTM D6400 (Standard Specification for Compostable Plastics) wasoriginally published in 1999 and the European harmonised standard EN 13432 (Packaging. Requirements for packagingrecoverable through composting and biodegradation. Test scheme and evaluation criteria for the final acceptance ofpackaging) the year after.
Overview of the Waste Management Situation and Planning in Greece
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2016)
Waste management has been recognized as one of the most pressing problems in Greece suffering of a low level of organization and relying predominantly on semi-controlled landfills until the end of the previous century . Nevertheless improvements have been made during the last twenty years making the solid waste management in Greece a well-structured, organized and environmentally responsible activity with specific goals, mostly in the urban areas. However, there is a big need of changing the waste Management model. The development of efficient use of resources is the mean of realizing this vision. The transformation of the economy towards a resource-efficient direction will lead to increased competitiveness and new sources of growth and jobs through cost reduction through improved efficiency, commercialization of innovations and better management of resources throughout the duration of cycle life.
bifa-Text Nr. 67: Umweltrisiken der Nanotechnologie: Sicherung der Kreislaufwirtschaft mit biologischen Testverfahren
© bifa Umweltinstitut GmbH (3/2016)
Es wurde vom bifa Umweltinstitut die Wirkung ausgewählter Nanomaterialien auf aerobe und anaerobe Abbauvorgänge in verschiedenen biologischen Testverfahren untersucht.
Entsorgung von LVP und Metallverpackungsabfällen in Deutschland
und Österreich – Ein (Öko-)Effizienzvergleich
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Der vorliegende Beitrag fast die Ergebnisse einer Studie zur vergleichenden Analyse der Entsorgung von Verpackungsabfällen aus haushaltsnahen Anfallstellen in Deutschland und Österreich zusammen, die im Auftrag der ARA AG erstellt wurde. Basis der Gegenüberstellung bildete die Analyse der rechtlichen Grundlagen, in Form der jeweils geltenden Verpackungsverordnung, sowie die Aufstellung der Mengenbilanzen. Die ökonomische Effizienz wurde durch Analyse der Kostenstrukturen der drei Wertschöpfungsstufen Erfassung, Sortierung und Verwertung vergleichend betrachtet. Zur Einschätzung der ökologischen Effizienz wurden die resultierenden Treibhausgasemissionen und -einsparungen gegenübergestellt.