Changes in the level of alkaline and acid phosphatase activities during green wastes and sewage sludge co-composting

• Published in: Bioresource technology Vol. 101; no. 1; pp. 228 - 233
• Main Authors: Albrecht, Remy, Petit, Jean Le, Calvert, Virgile, Terrom, Gérard, Périssol, Claude
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 2010; [New York, NY]: Elsevier Ltd; Elsevier
• Subjects: Acid phosphatase; Acid Phosphatase - analysis; Acid Phosphatase - metabolism; Agronomy. Soil science and plant productions; Alkaline phosphatase; Alkaline Phosphatase - analysis; Alkaline Phosphatase - metabolism; Applied sciences; Biodegradation, Environmental; Biological and medical sciences; Biological treatment of sewage sludges and wastes; Biotechnology; Compost; compost maturity; compost quality; Environment and pollution; enzyme activity; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; Industrial applications and implications. Economical aspects; Industrial Waste - analysis; Industrial Waste - prevention & control; Inorganic phosphorus; Life Sciences; Organic phosphorus; organic wastes; Other nutrients. Amendments. Solid and liquid wastes. Sludges and slurries; Pollution; Sewage - chemistry; Sewage - microbiology; sewage sludge; Soil - analysis; Soil Microbiology; Soil-plant relationships. Soil fertility. Fertilization. Amendments; Use of agricultural and forest wastes. Biomass use, bioconversion; Wastes; windrow composting; Organic phosphorus; Alkaline phosphatase; Compost; Inorganic phosphorus; Acid phosphatase; Enzyme; Phosphoric monoester hydrolases; Esterases; Sewage sludge; Inorganic compound; Vegetal waste; Composting; Hydrolases
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2009.08.017

The aim of this work was to study the activity level of alkaline and acid phosphatases during the composting of green wastes and sewage sludge and to determine relationships between biotic and abiotic properties of compost and phosphatase activities. This study has revealed a noticeable separation of phosphomonoesterase activities into two distinct phases during composting. Alkaline and acid phosphatase activities were high during the first month of composting and then declined up to the end of the process. Both phosphatase activities were significantly correlated with a group of variables which are clearly related to advancement of maturity during the composting process: C/N, respiration, cellulase, protease, phenoloxidase activities, HA and Global Index of Composting Evolution (GICE) resulting from 14 biological and chemical parameters. This study has also revealed the complexity of factors regulating turnover of P in compost process since phosphatase activities appeared constrained across two thresholds: 60/70 and 100 μg of inorganic P g −1 DM for activation and repression, respectively.