Indigenous cellulolytic and hemicellulolytic bacteria enhanced rapid co-composting of lignocellulose oil palm empty fruit bunch with palm oil mill effluent anaerobic sludge

• Published in: Bioresource technology Vol. 147; pp. 632 - 635
• Main Authors: Zainudin, Mohd Huzairi Mohd, Hassan, Mohd Ali, Tokura, Mitsunori, Shirai, Yoshihito
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.11.2013; Elsevier
• Subjects: Anaerobic sludge; Anaerobiosis; Applied sciences; Bacteria; Bacteria - metabolism; Biological and medical sciences; Biological treatment of sewage sludges and wastes; Biotechnology; Cellulolytic bacteria; Cellulose - metabolism; Composting; Environment and pollution; Exact sciences and technology; Food industries; Fruits; Fundamental and applied biological sciences. Psychology; Industrial applications and implications. Economical aspects; Lignin - metabolism; Lignocellulose; Microorganisms; Oil palm empty fruit bunch; Palm Oil; Plant Oils - metabolism; Pollution; Sewage; Sludge; Strain; Use and upgrading of agricultural and food by-products. Biotechnology; Waste Water; Wastes; Oil palm empty fruit bunch; Anaerobic sludge; Composting; Cellulolytic bacteria; Monocotyledones; Fruit; Cellulolysis; Lignocellulosics; Palm oil; Anaerobe; Angiospermae; Bacteria; Oil plant by product; Spermatophyta; Palmae; Wastes; Autochthonous; Elaeis guineensis; Oil plant (vegetal)
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2013.08.061

•Cellulolytic and hemicellulolytic bacteria during rapid composting of lignocellulose OPEFB.•Thickened POME sludge reduced the composting period and provided additional nutrients.•Indigenous cellulolytic and hemicellulolytic bacteria enhanced the composting process. The composting of lignocellulosic oil palm empty fruit bunch (OPEFB) with continuous addition of palm oil mill (POME) anaerobic sludge which contained nutrients and indigenous microbes was studied. In comparison to the conventional OPEFB composting which took 60–90days, the rapid composting in this study can be completed in 40days with final C/N ratio of 12.4 and nitrogen (2.5%), phosphorus (1.4%), and potassium (2.8%), respectively. Twenty-seven cellulolytic bacterial strains of which 23 strains were closely related to Bacillus subtilis, Bacillus firmus, Thermobifida fusca, Thermomonospora spp., Cellulomonas sp., Ureibacillus thermosphaericus, Paenibacillus barengoltzii, Paenibacillus campinasensis, Geobacillus thermodenitrificans, Pseudoxanthomonas byssovorax which were known as lignocellulose degrading bacteria and commonly involved in lignocellulose degradation. Four isolated strains related to Exiguobacterium acetylicum and Rhizobium sp., with cellulolytic and hemicellulolytic activities. The rapid composting period achieved in this study can thus be attributed to the naturally occurring cellulolytic and hemicellulolytic strains identified.