Anaerobic digestion of Crassulacean Acid Metabolism plants: Exploring alternative feedstocks for semi-arid lands

TY - JOUR

T1 - Anaerobic digestion of Crassulacean Acid Metabolism plants

T2 - Exploring alternative feedstocks for semi-arid lands

AU - Lueangwattanapong, Khemmathin

AU - Ammam, Fariza

AU - Mason, P Michael

AU - Whitehead, Caragh

AU - McQueen-Mason, Simon J

AU - Gomez, Leonardo D

AU - Smith, J Andrew C

AU - Thompson, Ian P

N1 - © 2019 Published by Elsevier Ltd. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy.

PY - 2019/10/14

Y1 - 2019/10/14

N2 - In this work, five Crassulacean Acid Metabolism (CAM) species from the five different genera (Agave, Ananas, Euphorbia, Kalanchoe, and Opuntia) were selected as alternative feedstocks and their biochemical methane potentials (BMP) were investigated. Batch assays were performed using sludge and rumen fluid as inocula under uncontrolled pH and at mesophilic temperature (39 °C). Mean methane yields from the CAM plants inoculated with AD sludge ranged from 281 to 382 ml/gVS. These values were not significantly different from the methane yield obtained from maize, a feedstock for biomethane and volatile fatty acid (VFA), suggesting that CAM plants may be viable as bioenergy crops on poor-quality soils in areas with low rainfall that are unsuitable for cultivation of food crops.

AB - In this work, five Crassulacean Acid Metabolism (CAM) species from the five different genera (Agave, Ananas, Euphorbia, Kalanchoe, and Opuntia) were selected as alternative feedstocks and their biochemical methane potentials (BMP) were investigated. Batch assays were performed using sludge and rumen fluid as inocula under uncontrolled pH and at mesophilic temperature (39 °C). Mean methane yields from the CAM plants inoculated with AD sludge ranged from 281 to 382 ml/gVS. These values were not significantly different from the methane yield obtained from maize, a feedstock for biomethane and volatile fatty acid (VFA), suggesting that CAM plants may be viable as bioenergy crops on poor-quality soils in areas with low rainfall that are unsuitable for cultivation of food crops.

U2 - 10.1016/j.biortech.2019.122262

DO - 10.1016/j.biortech.2019.122262

M3 - Article

C2 - 31711909

SN - 0960-8524

JO - BIORESOURCE TECHNOLOGY

JF - BIORESOURCE TECHNOLOGY

M1 - 122262

ER -