Influence of wet oxidation pretreatment with hydrogen peroxide and addition of clarified manure on anaerobic digestion of oil palm empty fruit bunches. (July 2021)

• Record Type: Journal Article
• Authors: Lee, Jonathan T.E.; Khan, Muhammad Usman; Dai, Yanjun; Tong, Yen Wah; Ahring, Birgitte K.
• Is Part Of: Bioresource technology. Volume 332(2021)
• Publication Date: 2021-07
• Subjects: Anaerobic digestion -- Oil palm empty fruit bunches -- Clarified manure -- Wet oxidation pretreatment -- Resource recovery; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2021.125033
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Pretreated OPEFB was anaerobically digested at mesophilic conditions. Clarified manure was added into the digestion process resulting in 49% higher methane production. Pretreatment increased methane yield by 19.7 – 52.7% over control. Pretreatment allowed 94.9% of cellulose and 99.6% of hemicellulose to be converted. Abstract: Food and energy requirements are increasing globally, and the challenge is to meet these demands in a sustainable manner. Oil palm has a relatively high productivity, but produces the lignocellulosic residue of empty fruit bunches (OPEFB). In this study, wet oxidation pretreatment is utilized to overcome the recalcitrance of OPEFB during semi-continuous anaerobic digestion (AD) with between 19.7 and 52.7% improvement over the control, and near total cellulose and hemicellulose content could be degraded. Clarified manure, the water phase of cattle and dairy manure after filtration, is further tested for its effect on methane production by providing necessary micronutrients and vitamins. An increase of 49% was found after addition of clarified manure to OPEFB compared to without this addition.