TY - JOUR
T1 - Carbon mineralization and distribution of nutrients within different particle-size fractions of commercially produced olive mill pomace
AU - Gomez Muñoz, Beatriz
AU - Bol, Roland
AU - Hatch, David
AU - García-Ruiz, Roberto
PY - 2011
Y1 - 2011
N2 - Composting is a realistic option for disposal of olive mill pomace (OMP) by making it suitable as a soil amendment for organic farming. The chemical and physical characteristics and contribution of particle-size fractions to total nutrients and carbon mineralization of seven commercial composts of OMP (COMP) were investigated. Higher proportions of manure, co-composted with OMP, reduced the organic matter (OM), total carbon and C:N ratio of the product, but increased the content of nutrients and fine particles. The fine particles had higher nutrient contents, but less OM and carbon and, unlike larger particles, did not exhibit any phytotoxicity. Less than 1.5% of added carbon was mineralized in whole compost, but a lower rate was found with larger particles. Separation of COMP by particle size fractionation and application as a soil conditioner is recommended for better optimization of COMP with the <1. mm fraction providing the higher quality compost.
AB - Composting is a realistic option for disposal of olive mill pomace (OMP) by making it suitable as a soil amendment for organic farming. The chemical and physical characteristics and contribution of particle-size fractions to total nutrients and carbon mineralization of seven commercial composts of OMP (COMP) were investigated. Higher proportions of manure, co-composted with OMP, reduced the organic matter (OM), total carbon and C:N ratio of the product, but increased the content of nutrients and fine particles. The fine particles had higher nutrient contents, but less OM and carbon and, unlike larger particles, did not exhibit any phytotoxicity. Less than 1.5% of added carbon was mineralized in whole compost, but a lower rate was found with larger particles. Separation of COMP by particle size fractionation and application as a soil conditioner is recommended for better optimization of COMP with the <1. mm fraction providing the higher quality compost.
KW - By-products
KW - C mineralization
KW - Composted olive mill pomace
KW - Particle-size fraction
U2 - 10.1016/j.biortech.2011.08.009
DO - 10.1016/j.biortech.2011.08.009
M3 - Journal article
C2 - 21890354
AN - SCOPUS:80053101682
SN - 0960-8524
VL - 102
SP - 9997
EP - 10005
JO - Bioresource Technology
JF - Bioresource Technology
IS - 21
ER -