title: Influence of biochar addition on the humic substances of composting manures.
abstract: Application of biochar (10% v/v) to a manure composting matrix was investigated to evaluate its effect on the chemical composition of humic substances during the composting process. The characteristics of the humic acid (HA) and fulvic acid (FA) fractions were analyzed in compost mixtures originating from two different manures (poultry manure (PM) and cow manure (CM)). The C contents of HA and FA from the manure compost/biochar blends (PM+B and CM+B) were higher than those from PM and CM, with an enhanced recalcitrant fraction, as determined by thermogravimetric analysis. Spectroscopic analysis showed that enrichment of aromatic-C and carboxylic-C occurred in the FA fractions of PM+B and CM+B to a greater extent than in PM and CM. Biochar addition into the composting mixture improved the final compost quality, especially for the light humified fraction (FA).
authors.affiliation: Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Department of Soil Conservation and Waste Management, Campus Universitario de Espinardo, 30100 Murcia, Spain; NUDIBA-Universidade Estadual Norte Fulminense, Av. Alberto Lamego 2000, Campos Dos Goytacazes, Rio de Janeiro, Brazil. Electronic address: keijindo@hotmail.com.
authors.forename: Keiji
authors.initials: K
authors.lastname: Jindo
authors.affiliation: Faculty of Agriculture and Life-Sciences, Hirosaki University, Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan.
authors.forename: Tomonori
authors.initials: T
authors.lastname: Sonoki
authors.affiliation: Faculty of Agriculture and Life-Sciences, Hirosaki University, Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Matsumoto
authors.affiliation: NUDIBA-Universidade Estadual Norte Fulminense, Av. Alberto Lamego 2000, Campos Dos Goytacazes, Rio de Janeiro, Brazil.
authors.forename: Luciano
authors.initials: L
authors.lastname: Canellas
authors.affiliation: Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Department of Soil Conservation and Waste Management, Campus Universitario de Espinardo, 30100 Murcia, Spain.
authors.forename: Asunción
authors.initials: A
authors.lastname: Roig
authors.affiliation: Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC), Department of Soil Conservation and Waste Management, Campus Universitario de Espinardo, 30100 Murcia, Spain.
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Sanchez-Monedero
mesh_terms: D000818:Animals; D001578:Benzopyrans / Q000032:analysis* / Q000737:chemistry; D002417:Cattle; D002606:Charcoal / Q000032:analysis* / Q000737:chemistry; D006812:Humic Substances / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D008372:Manure / Q000032:analysis*; D011200:Poultry; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D018505:Waste Management
chemical_list: D001578:Benzopyrans; D006812:Humic Substances; D008372:Manure; C540010:biochar; D002606:Charcoal; C005023:fulvic acid
keywords: Charcoal; Compost; Fulvic acid; Humic acid; Organic waste