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Journal of Sustainable Development of Energy, Water and Environment Systems, Vol. 11 No. 1, 2023.

Original scientific paper

https://doi.org/10.13044/j.sdewes.d10.0415

Co-composting of Sewage Sludge, Green Waste, and Food Waste

Dijana Grgas ; University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, Croatia
Tea Štefanac ; University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, Croatia
Martina Barešić ; Matvej d.o.o., Zagreb, Croatia
Merima Toromanović ; University of Bihać, Biotechnical faculty, Bihać, Bosnia and Herzegovina
Jasmina Ibrahimpašić ; University of Bihać, Biotechnical faculty, Bihać, Bosnia and Herzegovina
Tomislava Vukušić Pavičić ; University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, Croatia
Mirna Habuda-Stanić ; J.J. Strossmayer University of Osijek, Faculty of Food Technology, Osijek, Croatia
Zoran Herceg ; University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, Croatia
Tibela Landeka Dragičević ; University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, Croatia

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Abstract

Rapid population growth requires more intense production of food industry, with two major consequences: significant amount of food processing residues and more sewage sludge originating from biological wastewater treatment plant. Sludge is a big concern for the disposal for wastewater treatment plant. The European Union makes an effort regarding the reduction of organic fractions disposed at a landfill. Composting is a cost-effective and ecological-friendly alternative for managing biodegradable organic fractions. Experiments of co-composting of sewage sludge, green waste and food waste, at carbon/nitrogen ratios 8.75, 18.00 and 24.90, were performed during three months by monitoring of temperature, pH, moisture, carbon and nitrogen proportion, carbon/nitrogen ratio, and germination index. The results showed that co-composting of sewage sludge, green waste and food waste is effective and results in the production of quality compost

Keywords

Co-composting; Sewage sludge; Green waste; Food waste; Carbon/Nitrogen; Waste reduction

Hrčak ID:

296449

URI

https://hrcak.srce.hr/296449

Publication date:

31.3.2023.

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