A comparative study on the influence of different organic amendments on trace element mobility and microbial functionality of a polluted mine soil

Autor: E. Álvarez-Ayuso, E. Iglesias-Jiménez, P. Abad-Valle
Přispěvatelé: Álvarez Ayuso, Esther, Álvarez Ayuso, Esther [0000-0003-2243-8639]
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Environmental Engineering
Soil test
Soil pollution
Acid Phosphatase
Industrial Waste
010501 environmental sciences
Management
Monitoring
Policy and Law
engineering.material
Solid Waste
complex mixtures
01 natural sciences
Mining
Soil respiration
Soil
Immobilization
Bacterial Proteins
Olea
Soil Pollutants
Leonardite
Food-Processing Industry
Waste Management and Disposal
Soil microbial functionality
Environmental Restoration and Remediation
Soil Microbiology
Arylsulfatases
0105 earth and related environmental sciences
Minerals
Trace elements
Compost
beta-Glucosidase
Soil organic matter
04 agricultural and veterinary sciences
General Medicine
Alkaline Phosphatase
Organic materials
Urease
Soil contamination
Humus
Soil conditioner
Zinc
Environmental chemistry
040103 agronomy & agriculture
engineering
0401 agriculture
forestry
and fisheries
Environmental science
Oxidoreductases
Cadmium
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
instname
Popis: 29 páginas, 4 tablas, 6 figuras
A mine soil heavily polluted with zinc and cadmium was employed to evaluate the capacity of organic amendments of different origin to simultaneously reduce soil trace element mobility and enhance soil microbial functionality. With this aim, four organic products, namely olive processing solid waste (OPSW), municipal solid waste compost (MSWC), leonardite and peat, were applied individually at different doses (0, 1, 2 and 5%) to mine soil under controlled laboratory conditions. Extraction studies and analysis of soil microbiological parameters (basal soil respiration and dehydrogenase, b-glucosidase, urease, arylsulfatase and acid and alkaline phosphatase activities) were performed to assess the effect of such amendments on soil restoration. Their ability to decrease mine soil mobile trace element contents followed the sequence MSWC > OPSW > peat > leonardite, with the former achieving reduction levels of 78 and 73% for Zn and Cd, respectively, when applied at a dose of 5%. This amendment also showed a good performance to restore soil microbial functionality. Thus, basal soil respiration and dehydrogenase, urease and alkaline phosphatase activities experienced increases of 187, 79, 42 and 26%, respectively, when mine soil was treated with 5% MSWC. Among tested organic products, MSWC proved to be the best amendment to perform both the chemical and the microbial soil remediation.
Abad-Valle P. acknowledges the Spanish Research Council (CSIC) for her contract (JAEDOC057) funded by the JAE-Doc program (CSIC-FSE).
Databáze: OpenAIRE
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