Development of phytotoxicity indexes and their correlation with ecotoxicological, stability and physicochemical parameters during passive composting of poultry manure

Authors
Young, Brian Jonathan; Rizzo, Pedro Federico; Riera, Nicolas Iván; Della Torre, Virginia; López, Valeria Alejandra; Molina, Cecilia Denisse; Fernández, Florencia Estefanía; Crespo, Diana Elvira; Barrena, Raquel; Komilis, Dimitrios; Sánchez, Antoni
Publication Year
2016
Language
English
Format
article
Status
Versión aceptada para publicación
Description
Both raw and composted poultry manure is applied as soil amendment. The aims of this study were: (1) to develop phytotoxicity indexes for organic wastes and composts, and (2) to assess the correlation among phytotoxicity indexes, ecotoxicological endpoints and stability and physicochemical parameters during passive composting of poultry manure. Six 2-m3 composting piles were constructed and four parameter groups (physicochemical and microbiological parameters, ecotoxicological endpoints, and biological activity) were determined at four sampling times during 92 days. Extracts were used to carry out acute toxicity tests on Daphnia magna, Lactuca sativa and Raphanus sativus. Composting decreased average toxicity 22.8% for the 3 species and D. magna was the most sensitive species. The static respiration index decreased from 1.12 to 0.46 mg O2 g OM h−1 whilst organic matter reduced by 64.1% at the end of the process. Escherichia coli colonies remained higher than values recommended by international guidelines. The D. magna immobilization test allowed the assessment of possible leachate or run-off toxicity. The new phytotoxicity indexes (RGIC0.8 and GIC80%), proposed in this study, as well as salinity, proved to be good maturity indicators. Hence, these phytotoxicity indexes could be implemented in monitoring strategies as useful ecotoxicological tools. Multivariate analyses demonstrated positive correlations between ecotoxicological endpoints (low toxicity) and biological activity (stability). These two parameter groups were associated at the final sampling time and showed negative correlations with several physicochemical parameters (organic and inorganic contents). The final poultry manure compost was rendered stable, but immature and, thus, unsuitable for soil amending.
Fil: Young, Brian Jonathan. INTA. Instituto de Microbiología y Zoología Agrícola. Laboratorio de Transformación de Residuos; Argentina
Fil: Rizzo, Pedro Federico. INTA. Instituto de Microbiología y Zoología Agrícola. Laboratorio de Transformación de Residuos; Argentina
Fil: Riera, Nicolas Iváno. INTA. Instituto de Microbiología y Zoología Agrícola. Laboratorio de Transformación de Residuos; Argentina
Fil: Della Torre, Virginia. INTA. Instituto de Microbiología y Zoología Agrícola. Laboratorio de Transformación de Residuos; Argentina
Fil: Lopez, Valeria Alejandra. INTA. Instituto de Microbiología y Zoología Agrícola. Laboratorio de Transformación de Residuos; Argentina
Fil: Molina, Cecilia Denisse. INTA. Instituto de Microbiología y Zoología Agrícola. Laboratorio de Transformación de Residuos; Argentina
Fil: Fernández, Florencia Estefanía. INTA. Instituto de Microbiología y Zoología Agrícola. Laboratorio de Transformación de Residuos; Argentina
Fil: Crespo, Diana Elvira. INTA. Instituto de Microbiología y Zoología Agrícola. Laboratorio de Transformación de Residuos; Argentina
Fil: Komilis, Dimitrios. Universitat Autònoma de Barcelona. Departamento de Ingeniería Química; España
Fil: Sánchez, Antoni. Universitat Autònoma de Barcelona. Departamento de Ingeniería Química; España
Source
Waste management 54 : 101-109. (August 2016)
Subject
Fitotoxicidad
Phytotoxicity
Poultry
Farmyard Manure
Ecotoxicology
Estiércol
Aves de Corral
Ecotoxicología
Access level
Restricted access
License
Repository
INTA Digital (INTA)
Institution
Instituto Nacional de Tecnología Agropecuaria
OAI Identifier
oai:localhost:20.500.12123/1040