Regenerative Energie
The purpose of this work was to study the possibility of producing, by composting, a stable organic matter beneficial for agricultural use.
Four composting trials were carried out with sludges from a wastewater treatment plant from a potato chips industry. This wastewater treatment plant produces two types of sludge: single sludge (SS) and sludge mixed with potato peel (SM). The sludges were mixed with structural agents [straw (S) and corrugated cardboard (CC)] in order to improve the conditions of composting process. For 60 days, they were submitted to composting methodology. Parameters such as microbial populations (namely, total thermophilic and mesophilic aerobic bacteria and filamentous eumycetes), temperature, moisture, organic matter, total nitrogen, ammonium nitrogen, nitrate, C:N ratio, pH and electrical conductivity were evaluated. The thermophilic phase was reached in three trials but only mixtures showed good conditions for composting process, what was confirmed by the higher population of total aerobic bacteria verified in these trials. The use of straw and corrugated cardboard, as structural agents, increased the thermophilic phase, which lasted for 13 and 18 days reaching a maximum temperature of 65.4 ºC and 61.1 ºC for the mixtures SS+S+CC and SM+S+CC respectively.
| Copyright: | © European Compost Network ECN e.V. |
| Quelle: | ORBIT 2003 (Mai 2003) |
| Seiten: | 11 |
| Preis: | € 5,50 |
| Autor: | A. Cordeiro Prof. A. Cristina Cunha Queda Elizabeth da Costa N. F. de Almeida Duarte |
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Hochlauf der Wasserstoffwirtschaft
© Lexxion Verlagsgesellschaft mbH (8/2024)
Überblick über und Diskussion der Maßnahmen zum beschleunigten Ausbau
der Wasserstoffinfrastruktur in Deutschland
Die innerstaatliche Umsetzung des Pariser Klimaschutzübereinkommens
- ein Rechtsvergleich
© Lexxion Verlagsgesellschaft mbH (8/2024)
Like all public international law treaties, the Paris Climate Accords rely on national law for their implementation. The success of the agreement therefore depends, to a large extent, on the stepstaken or not taken by national governments and legislators as well as on the instruments and mechanisms chosen for this task. Against this background, the present article compares different approaches to the implementation of the Paris Agreement, using court decisions as a means to assess their (legal) effectiveness.
Klimaschutzrecht und Erzeugung erneuerbarer Energien in der Schweiz
© Lexxion Verlagsgesellschaft mbH (8/2024)
Verschachtelte Gesetzgebung unter politischer Ungewissheit