Acid soluble bio-organic substances isolated from urban bio-waste. Chemical composition and properties of products.
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 km(2) 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 (K(PEGW)) between polyethylene glycol and water. A significant linear correlation was found between K(PEGW) and the lipophilic/hydrophilic C ratio. The investigated SBO exhibited up to sixfold change of K(PEGW) 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.
Montoneri
Enzo
E
Dipartimento di Chimica Generale e Chimica Organica, Università di Torino, C. M. D'Azeglio 48, 10125 Torino, Italy. enzo.montoneri@unito.it
Boffa
Vittorio
V
Savarino
Piero
P
Perrone
Daniele
D
Ghezzo
Marzia
M
Montoneri
Corrado
C
Mendichi
Raniero
R
D000143:Acids / Q000737:chemistry; D000332:Aerobiosis; D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D005735:Garbage; D009930:Organic Chemicals / Q000737:chemistry* / Q000302:isolation & purification; D012037:Refuse Disposal; D012987:Soil / Q000737:chemistry; D012995:Solubility; D014866:Waste Products / Q000032:analysis* / Q000706:statistics & numerical data
D000143:Acids; D009930:Organic Chemicals; D012987:Soil; D014866:Waste Products