Anaerobic digestion of road-side-green-cuttings as a poten-tial phytoremediator with different lead concentrations
- The utilization of roadside-green-cuttings (grass) for anaerobic digestion increases provides an additional possible source of organic waste for use as a renewable energy source. Grass can be used as a substrate to increase biogas yield. Nevertheless, the anaerobic digestion of this kind of waste can be limited due to the fact that it could be contaminated with heavy metals, in particular from traffic emissions and industrial activity. For this reason the biogas production of grass from a busy road was assessed. Samples of roadside-grass were washed with an organosulphide, which is used for the removal of heavy metals from wastewater. A comparison of the anaerobic digestion of washed and unwashed roadside grass was performed. Results showed that the anaerobic digestion of the unwashed grass was much more effective than the washed grass. A second experiment was carried out and co-fermentation of manure and farm-grass was prepared for anaerobic digestion. Lead was added in the concentrations 500, 1000 and 2000 mg Pb2+/kg. The results showed that the higher the lead concentration, the lower the inhibition of the biogas yield. The grass could be acting as phytoremediator for high lead concentrations. The grass could contain organic compounds, which can as-similate heavy metals.
Author: | Monica Lopez Velarde Santos, Christiane Rieker, Jaime Beccerra Jimenez, Jamile Bursche, Dagmar Gaese |
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URN: | urn:nbn:de:hbz:832-epub4-7692 |
Parent Title (German): | Kompendium der Forschungsgemeinschaft :metabolon 2012-2014 |
Descirption of the primary publication: | Kompendium der Forschungsgemeinschaft :metabolon 2012-2014, 2014, S. 26-29 |
Place of publication: | Gummersbach |
Document Type: | Part of a Book |
Language: | English |
Date of Publication (online): | 2015/12/14 |
GND-Keyword: | Anaerobic Digestion |
Tag: | Lead concentrations; Phytoremediator; Road-side-green-cuttings |
Institutes: | Anlagen, Energie- und Maschinensysteme (F09) / Fakultät 09 / Institut für Bau- und Landmaschinentechnik |
Anlagen, Energie- und Maschinensysteme (F09) / Fakultät 09 / Cologne Institute for Renewable Energy | |
Dewey Decimal Classification: | 600 Technik, Medizin, angewandte Wissenschaften |
JEL-Classification: | Q Agricultural and Natural Resource Economics; Environmental and Ecological Economics |
Open Access: | Open Access |
Licence (German): | ![]() |