title: Dry Co-Digestion of Poultry Manure with Agriculture Wastes.
abstract: This study tested the effect on thermophilic and mesophilic digestion of poultry manure (PM) or treated poultry manure (TPM) by the addition of agriculture wastes (AWS) as a co-substrate under dry conditions. PM was co-digested with a mixture of AWS consisting of coconut waste, cassava waste, and coffee grounds. Results were increased methane content in biogas, with decreased ammonia accumulation and volatile acids. The highest performance occurred under mesophilic conditions, with a 63 and 41.3 % increase in methane production from addition of AWS to TPM (562 vs. 344 mL g VS(-1) from control) and PM (406 vs. 287 mL g VS(-1) from control), respectively. Thermophilic conditions showed lower performance than mesophilic conditions. Addition of AWS increased methane production by 150 and 69.6 % from PM (323.4 vs. 129 mL g VS(-1) from control) and TPM (297.6 vs. 175.5 mL g VS(-1) from control), respectively. In all experiments, 100 % acetate produced was degraded to methane. Maximum ammonia accumulation was lowered to 43.7 % by mixing of AWS (range 5.35-8.55 vs. 7.81-12.28 g N kg(-1) bed). The pH was held at 7.3-8.8, a range suitable for methanogenesis.
authors.affiliation: Department of Hygiene and Preventive Medicine, Faculty of Vet Med, Kafer Elshikh University, Kafr Elsheikh, Egypt. fabou2ga@yahoo.com.
authors.forename: Fatma
authors.initials: F
authors.lastname: Abouelenien
authors.affiliation: Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter, Hiroshima University, Kagamiyama 1-3-1, Higashi, Hiroshima, 739-8530, Japan.
authors.forename: Yuzaburo
authors.initials: Y
authors.lastname: Namba
authors.affiliation: Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter, Hiroshima University, Kagamiyama 1-3-1, Higashi, Hiroshima, 739-8530, Japan.
authors.forename: Naomichi
authors.initials: N
authors.lastname: Nishio
authors.affiliation: Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter, Hiroshima University, Kagamiyama 1-3-1, Higashi, Hiroshima, 739-8530, Japan.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Nakashimada
mesh_terms: D000383:Agriculture; D000641:Ammonia / Q000378:metabolism; D000818:Animals; D005232:Fatty Acids, Volatile / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D008372:Manure; D011200:Poultry; D018505:Waste Management
chemical_list: D005232:Fatty Acids, Volatile; D008372:Manure; D000641:Ammonia
keywords: Cassava waste; Coconut waste; Coffee waste; Dry co-digestion; Methane production; Poultry manure