TY - JOUR
T1 - Optimization and enhancement of soil bioremediation by composting using the experimental design technique
AU - Sayara, Tahseen
AU - Sarrà, Montserrat
AU - Sánchez, Antoni
PY - 2010/6/1
Y1 - 2010/6/1
N2 - The objective of this study was the application of the experimental design technique to optimize the conditions for the bioremediation of contaminated soil by means of composting. A low-cost material such as compost from the Organic Fraction of Municipal Solid Waste as amendment and pyrene as model pollutant were used. The effect of three factors was considered: pollutant concentration (0.1-2 g/kg), soil:compost mixing ratio (1:0.5-1:2 w/w) and compost stability measured as respiration index (0.78, 2.69 and 4.52 mg O2 g-1 Organic Matter h-1). Stable compost permitted to achieve an almost complete degradation of pyrene in a short time (10 days). Results indicated that compost stability is a key parameter to optimize PAHs biodegradation. A factor analysis indicated that the optimal conditions for bioremediation after 10, 20 and 30 days of process were (1.4, 0.78, 1:1.4), (1.4, 2.18. 1:1.3) and (1.3, 2.18, 1:1.3) for concentration (g/kg), compost stability (mg O2 g-1 Organic Matter h-1) and soil:compost mixing ratio, respectively. © 2009 Springer Science+Business Media B.V.
AB - The objective of this study was the application of the experimental design technique to optimize the conditions for the bioremediation of contaminated soil by means of composting. A low-cost material such as compost from the Organic Fraction of Municipal Solid Waste as amendment and pyrene as model pollutant were used. The effect of three factors was considered: pollutant concentration (0.1-2 g/kg), soil:compost mixing ratio (1:0.5-1:2 w/w) and compost stability measured as respiration index (0.78, 2.69 and 4.52 mg O2 g-1 Organic Matter h-1). Stable compost permitted to achieve an almost complete degradation of pyrene in a short time (10 days). Results indicated that compost stability is a key parameter to optimize PAHs biodegradation. A factor analysis indicated that the optimal conditions for bioremediation after 10, 20 and 30 days of process were (1.4, 0.78, 1:1.4), (1.4, 2.18. 1:1.3) and (1.3, 2.18, 1:1.3) for concentration (g/kg), compost stability (mg O2 g-1 Organic Matter h-1) and soil:compost mixing ratio, respectively. © 2009 Springer Science+Business Media B.V.
KW - Compost stability
KW - Experimental design
KW - Municipal solid waste
KW - Pyrene
KW - Soil bioremediation
UR - https://ddd.uab.cat/record/163716
U2 - https://doi.org/10.1007/s10532-009-9305-8
DO - https://doi.org/10.1007/s10532-009-9305-8
M3 - Article
VL - 21
SP - 345
EP - 356
ER -