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Acid soluble bio-organic substances isolated from urban bio-waste. Chemical composition and properties of products |
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| Authors: | Montoneri Enzo Boffa Vittorio Savarino Piero Perrone Daniele Ghezzo Marzia Montoneri Corrado Mendichi Raniero |
| Institution: | a Dipartimento di Chimica Generale e Chimica Organica, Università di Torino, C. M. D’Azeglio 48, 10125 Torino, Italy b Dimorfipa, Università Di Bologna, Via Tolara di Sopra 50, 40064 Ozzano Dell’Emilia (BO), Italy c Istituto per lo Studio delle Macromolecole (CNR), Via E. Bassini 15, 20133 Milano, Italy |
| Abstract: | As previous work proposed commercial expectations for soluble bio-organic substances (SBO) isolated from compost of urban food, gardening and park trimming residues as chemical auxiliaries, nine urban bio-wastes (BW) treated by aerobic and anaerobic digestion for 0-360 days were used to extract SBO and investigate source variability effects on product chemical composition and properties. The bio-wastes were collected over a 13732 km2 area populated by 2.9 millions from 565 municipalities. The SBO were characterized by their content of different C types and functional groups and by their distribution coefficient (KPEGW) between polyethylene glycol and water. A significant linear correlation was found between KPEGW and the lipophilic/hydrophilic C ratio. The investigated SBO exhibited up to sixfold change of KPEGW demonstrating that BW available from densely populated urban areas are an interesting exploitable source of a wide variety of potential products for the chemical market. |
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