초록
<P><B>Abstract</B></P> <P>The research aimed to study and characterize, in a four-year study, thirteen pluri-annual herbaceous species for their potential bioethanol and biomethane production. The highest biomass yield was obtained with <I>Arundo donax</I> followed by <I>Miscanthus</I> x <I>giganteus</I>. Biomass cellulose content had median values ranging from 23.1% (<I>Symphytum</I> x <I>uplandicum</I>) to 45.4% (<I>Lythrum salicaria</I>), hemicellulose from 9.4% (<I>Iris pseudacorus</I>) to 36.8% (<I>Glyceria maxima</I>) and lignin from 2.6% (<I>G. maxima</I>) to 14.5% (<I>Helianthus tuberosus</I> and <I>L. salicaria</I>). The best ethanol and methane median yields were achieved by <I>A. donax</I> (3.5 Mg ha<SUP>−1</SUP> and 8227 m<SUP>3</SUP> ha<SUP>−1</SUP>, respectively) followed by <I>M.</I> x <I>giganteus</I> (3.2 Mg ha<SUP>−1</SUP> and 4446 m<SUP>3</SUP> ha<SUP>−1</SUP>, respectively). Methane transformation showed a higher energy output than ethanol with values ranging from 1 GJ ha<SUP>−1</SUP> (<I>Phalaris arundinacea</I>) to 508 GJ ha<SUP>−1</SUP> (<I>A. donax</I>) and from 1 GJ ha<SUP>−1</SUP> (<I>P. arundinacea</I>) to 624 GJ ha<SUP>−1</SUP> (<I>A. donax</I>) for ethanol and methane, respectively. Results showed that <I>A. donax</I> and <I>M.</I> x <I>giganteus</I> are the most interesting species for bioethanol and biomethane production.</P> <P><B>Highlights</B></P> <P> <UL> <LI> <I>A. donax</I> gave the highest ethanol (3.9 Mg ha<SUP>−1</SUP>) and methane (9056 m<SUP>3</SUP> ha<SUP>−1</SUP>) yields. </LI> <LI> <I>M. giganteus</I> produced 3.1 Mg ha<SUP>−1</SUP> of ethanol and 4325 m<SUP>3</SUP> ha<SUP>−1</SUP> of methane. </LI> <LI> Methane transformation showed higher energy output than ethanol. </LI> <LI> <I>A. donax</I> and <I>M.</I> x <I>giganteus</I> were the most interesting bioenergy species. </LI> </UL> </P>