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7. How can we possibly resolve the planet's nitrogen dilemma?

Author

Matassa, Silvio, primary, Boeckx, Pascal, additional, Boere, Jos, additional, Erisman, Jan Willem, additional, Guo, Miao, additional, Manzo, Raffaele, additional, Meerburg, Francis, additional, Papirio, Stefano, additional, Pikaar, Ilje, additional, Rabaey, Korneel, additional, Rousseau, Diederik, additional, Schnoor, Jerald, additional, Smith, Peter, additional, Smolders, Erik, additional, Wuertz, Stefan, additional, and Verstraete, Willy, additional

Published
2022
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8. How can we possibly resolve the planet's nitrogen dilemma?

Author

Matassa, Silvio, Boeckx, Pascal, Boere, Jos, Erisman, Jan Willem, Guo, Miao, Manzo, Raffaele, Meerburg, Francis, Papirio, Stefano, Pikaar, Ilje, Rabaey, Korneel, Rousseau, Diederik, Schnoor, Jerald, Smith, Peter, Smolders, Erik, Wuertz, Stefan, and Verstraete, Willy

Subjects
ORGANIC farming, NITROGEN fixation, NITROGEN, FOSSIL fuels, FOOD supply, NITROGEN fertilizers, DILEMMA
Abstract

Nitrogen is the most crucial element in the production of nutritious feeds and foods. The production of reactive nitrogen by means of fossil fuel has thus far been able to guarantee the protein supply for the world population. Yet, the production and massive use of fertilizer nitrogen constitute a major threat in terms of environmental health and sustainability. It is crucial to promote consumer acceptance and awareness towards proteins produced by highly effective microorganisms, and their potential to replace proteins obtained with poor nitrogen efficiencies from plants and animals. The fact that reactive fertilizer nitrogen, produced by the Haber Bosch process, consumes a significant amount of fossil fuel worldwide is of concern. Moreover, recently, the prices of fossil fuels have increased the cost of reactive nitrogen by a factor of 3 to 5 times, while international policies are fostering the transition towards a more sustainable agro‐ecology by reducing mineral fertilizers inputs and increasing organic farming. The combination of these pressures and challenges opens opportunities to use the reactive nitrogen nutrient more carefully. Time has come to effectively recover used nitrogen from secondary resources and to upgrade it to a legal status of fertilizer. Organic nitrogen is a slow‐release fertilizer, it has a factor of 2.5 or higher economic value per unit nitrogen as fertilizer and thus adequate technologies to produce it, for instance by implementing photobiological processes, are promising. Finally, it appears wise to start the integration in our overall feed and food supply chains of the exceptional potential of biological nitrogen fixation. Nitrogen produced by the nitrogenase enzyme, either in the soil or in novel biotechnology reactor systems, deserves to have a 'renaissance' in the context of planetary governance in general and the increasing number of people who desire to be fed in a sustainable way in particular. [ABSTRACT FROM AUTHOR]

Published
2023
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9. Towards a Circular Bioeconomy. VOLATILE FATTY ACID PLATFORM FOR BIOWASTE RECYCLING

Author

Michels, Jochen, Mocking, Tijs, Sellis, Ido, Meerburg, Francis, Bauer, Csaba, Pais, Celia, Magielse, Peter, Ferreira, Vasco, Gonzalez, Elisabeth, Stramarkou, Marina, Carolas, Ana, Rusu, Alexandru, Hiessl, Sebastian, Dietrich, Thomas, Velghe, Filip, Pop, Bianca, Peral, Carlota, De Wilde, Fabian, Spit, Gerben, Sommer Ferreira, Bruno, Wiedemann, Adelheid, Neureiter, Markus, Pierrard, Marie-Aline, Burgstaller, Burgstaller, Sampaio, Paula, Oliver, Laura, Topakas, Evangelos, Chalima, Angelina, Fernández de Castro, Laura, San Vicente, Leire, Oikonomopoulou, Vasiliki, Boukouvalas, Christos, Laina, Konstantina, Farahbakhsh, Siavash, Santamaría, Amaia, San José, Javier, Van Meensel, Jef, Snellinx, Stien, Belderbos, Edward, Mertens, Anouk, Villarán, Maria Carmen, and Universidade do Minho

Subjects
Volatile Fatty Acids, Municipal biowaste, Volatile fatty acids, Circular Bioeconomy, Circular bioeconomy
Abstract

Resources in general are not infinitely available, and also renewable resources if consumed outside their normal replacement cycles become scarce. Therefore, the establishment of a circular bioeconomy must respect natural systems and replacement cycles of organic carbon thereby reducing environmental pressure of human consumption. Upcycling of side and biowaste streams towards added value compounds represents hereby a critical aspect reducing land system change and fertilizer use for biomass supply for the bioeconomy. The development of a Volatile Fatty Acids Platform (VFAP) represents an important cornerstone for the upcycling of heterogenous municipal biowaste streams., This e-book was prepared in the context of the EU funded project VOLATILE in accordance with the grant agreement No 720777 (European Union’s Horizon 2020 research and innovation programme).

Published
2020

10. Reply for comment on “Bioflocculation management through high-rate contact-stabilization: A promising technology to recover organic carbon from low-strength wastewater by Rahman, A., Meerburg, F. A., Ravadagundhi, S., Wett, B., Jimenez, J., Bott, C., Al-Omari, A., Riffat, R., Murthy, S. and De Clippeleir, H. [Water Research 104 (2016) 485–496]”

Author

Rahman, Arifur, Meerburg, Francis A., Jimenez, Jose, Ravadagundhi, Shravani, Wett, Bernhard, Bott, Charles, Al-Omari, Ahmed, Riffat, Rumana, Murthy, Sudhir, and De Clippeleir, Haydée

Published
2017
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12. Pinpointing wastewater and process parameters controlling the AOB to NOB activity ratio in sewage treatment plants

Author

Seuntjens, Dries, primary, Han, Mofei, additional, Kerckhof, Frederiek-Maarten, additional, Boon, Nico, additional, Al-Omari, Ahmed, additional, Takacs, Imre, additional, Meerburg, Francis, additional, De Mulder, Chaïm, additional, Wett, Bernhard, additional, Bott, Charles, additional, Murthy, Sudhir, additional, Carvajal Arroyo, Jose Maria, additional, De Clippeleir, Haydée, additional, and Vlaeminck, Siegfried E., additional

Published
2018
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20. Diclofenac and 2-anilinophenylacetate degradation by combined activity of biogenic manganese oxides and silver

Author

Meerburg, Francis, Hennebel, Tom, Vanhaecke, Lynn, Verstraete, Willy, Boon, Nico, Boon, Nico, and Verstraete, Willy

Subjects
REMOVAL, PHARMACEUTICALS, WASTE-WATER, IDENTIFICATION, COMPOSITE OXIDES, Earth and Environmental Sciences, ADVANCED OXIDATION, DRINKING-WATER, DIATRIZOATE, NANOPARTICLES, BY-PRODUCTS
Abstract

The occurrence of a range of recalcitrant organic micropollutants in our aquatic environment has led to the development of various tertiary wastewater treatment methods. In this study, biogenic manganese oxides (Bio-MnOx), biogenic silver nanoparticles (Bio-Ag0) and ionic silver were used for the oxidative removal of the frequently encountered drug diclofenac and its dechlorinated form, 2-anilinophenylacetate (APA). Diclofenac was rapidly degraded during ongoing manganese oxidation by Pseudomonas putida MnB6. Furthermore, whereas preoxidized Bio-MnOx, Bio-Ag0 and Ag+ separately did not show any removal capacity for diclofenac, an enhanced removal occurred when Bio-MnOx and silver species were combined. Similar results were obtained for APA. Finally, a slow removal of diclofenac but more rapid APA degradation was observed when silver was added to manganese-free P. putida biomass. Combining these results, three mechanisms of diclofenac and APA removal could be distinguished: (i) a co-metabolic removal during active Mn2+ oxidation by P. putida; (ii) a synergistic interaction between preoxidized Bio-MnOx and silver species; and (iii) a (bio)chemical process by biomass enriched with silver catalysts. This paper demonstrates the use of P. putida for water treatment purposes and is the first report of the application of silver combined with biogenic manganese for the removal of organic water contaminants.

Published
2012

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