Published: Jan. 1, 2024

Piggery wastewater generation has become an environmental problem which must be solved by managing the residue through appropriate treatment.One promising technology is use of photobioreactors where microalgae and bacteria act symbiotically to remove nutrients, allows reduce costs in treatment production using as culture media.In this process, a valuable biomass generated that can used produce several components bioproducts.However, most algal such proteins carbohydrates are found within cell wall should disrupted extract them trying cause low degradation solubilized considering presence pollutants.So, thesis focusses on valorization grown piggery different technologies.Likewise, economic viability some proposed processes was studied.Techno-economic analysis show agricultural products sustainably produced from wastewater.The method harvesting resulted critical point obtaining 4.5 times more concentrated biostimulant with centrifugation than membranes.However, centrifuges led great expense due high cost equipment its electricity requirements, resulting final 343 €/m 3 vs 66 membranes.Comparing 1ha crop, centrifuge or membrane lower commercial product (22.1% 48.1% respectively).The membranes for allowed construction economically viable plants capable operating at capacity distributing biostimulants over greater distances centrifuges.A life cycle assessment showed 30% impact (global warming (GW) 217 kg CO2 eq/ha) instead centrifugation.The amount required crops when used, also relevant transportation, being favourable distance 321 km.As alternative, extraction biopesticides before evaluated.The calculated were 0.35 €/L 2.12€/L centrifuge, but higher inversion complex process producing only biostimulants.

Language: Английский