Regenerative Energie

Biogas

Biomasse

Erneuerbare allgemein

Energieeinsparung

Erdwärme

Grünes Geld

Klimaschutz

Kraft-Wärme-Kopplung

Meeresenergie

Mobilität

Photovoltaik

Solarthermie

Wärmepumpen

Wasserkraft

Windenergie

content-Partner

Microbial Carbonation - Alternative Technology to Composting

Climate change represents a significant challenge to mankind in the 21st century with the degra-dation of agricultural soil greatly contributing to the carbon footprint. The use of outdated cultivation technologies leads to less storage of carbon in such soils. Mitigating climate change and conserving natural resources is of significant importance for future decades to come. Therefore, a need to create and develop alternate solutions is required to lessen this environmental impact.

Many different technologies are available to optimise agricultural soil for harvesting greater yield. To rehabilitate the soil, artificial manure and organic fertilizers like compost, liquid ma-nure and fermentation residues are added; however, often organic fertilizers are biologically reactive or strongly mineralized with certain elements.
New substrates called biochar, produced by pyrolysis or hydrothermal carbonation of organic material, may be added to the soil to increase the carbon content. High temperature and energy consumption is required in the manufacture of a biochar, which in turn affect its composition (PAH, dioxin). Furthermore, there is limited research carried out to date on the long-term behaviour of these biochars in soil.
An alternative technology that may be utilized to improve agricultural soil is called microbial carbonation. The process is similar to open air composting; however, it is different in process control. In summary, the windrows are fixed and non-aerated and in contrast to conventional composting, the top of windrows are inoculated with selected strains of bacteria. The main aim of microbial carbonation and inoculation is in the humification of organic material. In comparison to normal composting, the soil resulting after the process of microbial carbonation has more organic elements and a reduced volume.

Copyright:	© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben
Quelle:	Depotech 2012 (November 2012)
Seiten:	6
Preis:	€ 3,00
Autor:	Dipl.-Ing. Claus-Robert Wonschik Prof. Dr. A. Heilmann Dipl. ing. Agrochemieing. Walter Witte
	Diesen Fachartikel kaufen... (nach Kauf erscheint Ihr Warenkorb oben links)
	Artikel weiterempfehlen
	Artikel nach Login kommentieren

---