Quality Assessment of a Battery of Organic Wastes and Composts Using Maturity, Stability and Enzymatic Parameters

Autor: Paula Alvarenga, Clarisse Mourinha, Márcia Farto, Cristina Cunha-Queda, Marie-Christine Morais, Patrícia Palma, Joana Sengo
Rok vydání: 2016
Předmět:
Organic wastes
Environmental Engineering
Enzymatic activities
Multivariant analysis
Alkalinity
010501 environmental sciences
Raw material
engineering.material
Humification index
01 natural sciences
Parameter estimation
Respiration activity
Organic matter
Wastes
Sewage sludge
Waste Management and Disposal
0105 earth and related environmental sciences
chemistry.chemical_classification
Renewable Energy
Sustainability and the Environment
Compost
Composting
Phosphatases
Biological materials
04 agricultural and veterinary sciences
Biodegradable waste
Biodegradation
Electric batteries
6. Clean water
Humus
chemistry
Environmental chemistry
040103 agronomy & agriculture
engineering
0401 agriculture
forestry
and fisheries
Chemical and biologicals
Microbial activities
Chemical stability
ALkaline phosphatase
Statistical treatment
Sludge
Zdroj: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação
ISSN: 1877-265X
1877-2641
DOI: 10.1007/s12649-015-9468-y
Popis: Chemical and biological parameters (NH4 +–N/NO3 −–N ratio, humification indices, and the activities of hydrolytic exoenzymes), commonly used to assess compost maturity and/or stability, were considered for the quality evaluation of a battery of organic materials, intended to be land applied. Acid and alkaline phosphatases, β-glucosidase, proteases and β-glucosaminidase activities proved to be reliable tests to distinguish the organic materials that were in an active stage of microbial activity, highly correlated to the chemical parameters NH4 +–N content and NH4 +–N/NO3 −–N ratio. In fact, these chemical parameters evidenced as important in the quality assessment of an organic material, strongly correlated with the biological parameters. The same was not true for the majority of the humification indices, which proved inadequate to compare the quality of such diverse organic materials. This was demonstrated by a multivariate statistical treatment of data, performed with these results in combination with results from the Dewar self-heating test, respiration activity and germination index, obtained in previous studies. Concluding, in a similar scenario, where the organic materials in evaluation are varied, both in the raw material an in the stability of the organic matter, the quality should be assessed by the integrated use of both chemical and biological parameters.
Databáze: OpenAIRE
Externí odkaz: