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Report from the multi-criteria analysis from workshop 2 with comparisons of the different alternatives in each case study and selection of eco-technologies for further use in WP5
The report evaluates different systems for nutrient and carbon recovery in the Vantaanjoki (Finland), Fyrisån (Sweden), and Słupia (Poland) catchment areas. Using a multi-criteria analysis (MCA) involving stakeholder weighting, the study compares baseline management against alternatives such as anaerobic digestion, pyrolysis, and source-separation. In Vantaanjoki, anaerobic digestion scored highest. In Fyrisån, source-separation was the most sustainable. In Słupia, nutrient extraction performed best, while source-separation was found to be potentially less sustainable than the baseline due to local context and low adoption rates.
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Document type: Report
A review of the phosphate lifecycle, impacts and strategies for sustainable use in the South African context
The report argues that marine phosphate mining is unwarranted in South Africa because it would increase environmental phosphate flows and contamination. It proposes that a sustainable supply of phosphates can be achieved through 'loop-closure'—specifically recovering phosphorus from human and animal waste and improving fertilizer application efficiency in agriculture. A substance flow analysis indicates that approximately 164 kt/year of phosphorus enters the South African environment, with 133 kt/year potentially recoverable through recycling. The document concludes that terrestrial reserves are sufficient for 90–220 years, making the ecological risks of seabed mining unnecessary.
AI-generated
This summary is written by a language model reading the source document. It is not the publisher's words and is not a substitute for the original.
Document type: Report