BioChem - DOS

Bioconversion of Giant Cane for Integrated Production of Biohydrogen, Carboxylic Acids, and Polyhydroxyalkanoates (PHAs) in a Multistage Biorefinery Approach

ACS sustainable chemistry et engineering

Villegas Calvo, Mariana; Colombo, Bianca; Corno, Luca; Eisele, Giorgio; Cosentino, Cesare; Papa, Gabriella; Scaglia, Barbara; Pilu, Roberto; Simmons, Blake; Adani, Fabrizio

<P>A highly productive <I>Arundo donax</I> L. clone (Clone AD-20) was produced at full field to give 54.6 Mg total solids biomass Ha<SUP>-1</SUP>. Biomass was chemically and enzymatically pretreated, recovering 13.9 Mg Ha<SUP>-1</SUP> of glucose and 3.6 Mg Ha<SUP>-1</SUP> of xylose, i.e., 3.5-4.5 more than yield typically obtained from corn stover or switchgrass. The subsequent fermentation of the liberated sugars to organic acids (OA) by dark fermentation generated yields of 3850 Nm<SUP>3</SUP> Ha<SUP>-1</SUP> of biohydrogen and 14.2 Mg Ha<SUP>-1</SUP> of OAs. OAs were then used as a feed to produce polyhydroxyalkanoates (PHA), with 3-hydroxybutyrate the major monomer present (PHB > 95% PHA), from a biological process using mixed microbial culture producing 5.04 Mg Ha<SUP>-1</SUP> of PHA. An initial economic analysis indicated that this multistage biorefinery approach would result in a net revenue of 10,415 &#x20ac; Ha<SUP>-1</SUP>, which is approximately 9-fold greater than that obtained by a traditional biorefinery producing bioethanol.</P><P>Bioplastic (polyhydroxyalkanoates, PHA) can be produced starting from high productivity crops by a biorefinery approach making this production highly sustainable.</P><BR>[FIG OMISSION]</BR>

2018

American Chemical Society

2168-0485

6

11

pp.15361-15373

10.1021/acssuschemeng.8b03794.s001

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART94896226

https://doi.org/10.1021/acssuschemeng.8b03794.s001

Arundo donax L.; Biohydrogen; Biorefinery; Organic acids; Polyhydroxyalkanoates; Sustainability