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Bio-degradation of olive mill wastewater sludge by its co-composting with agricultural wastes.
Bioresour Technol. 2002 Oct; 85(1):1-8.BT

Abstract

The use of maize straw (MS) or cotton waste (CW) as bulking agents in the composting of olive mill wastewater (OMW) sludge was compared by studying the organic matter (OM) mineralisation and humification processes during composting and the characteristics of the end products. Both composts were prepared in a pilot-plant using the Rutgers static-pile system. The use of CW instead of MS to compost OMW sludge extended both the thermophilic and bio-oxidative phases of the process, with higher degradation of polymers (mainly lignin and cellulose), a greater formation of nitrates, higher total nitrogen losses and a lower biological nitrogen fixation. The CW produced a compost with a more stabilised OM and more highly polymerised humic-like substances. In the pile with CW and OMW sludge, OM losses followed a first-order kinetic equation, due to OM degradation being greater at the beginning of the composting and remaining almost constant until the end of the process. However, in the pile with MS and OMW sludge this parameter followed a zero-order kinetic equation, since OM degraded throughout the process. The germination index indicated the reduction of phytotoxicity during composting.

Authors+Show Affiliations

Department of Agrochemistry and Environment, University of Miguel Hernández, Orihuela, Alicante, Spain. c.paredes@umh.esNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

12146635

Citation

Paredes, C, et al. "Bio-degradation of Olive Mill Wastewater Sludge By Its Co-composting With Agricultural Wastes." Bioresource Technology, vol. 85, no. 1, 2002, pp. 1-8.
Paredes C, Bernal MP, Cegarra J, et al. Bio-degradation of olive mill wastewater sludge by its co-composting with agricultural wastes. Bioresour Technol. 2002;85(1):1-8.
Paredes, C., Bernal, M. P., Cegarra, J., & Roig, A. (2002). Bio-degradation of olive mill wastewater sludge by its co-composting with agricultural wastes. Bioresource Technology, 85(1), 1-8.
Paredes C, et al. Bio-degradation of Olive Mill Wastewater Sludge By Its Co-composting With Agricultural Wastes. Bioresour Technol. 2002;85(1):1-8. PubMed PMID: 12146635.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bio-degradation of olive mill wastewater sludge by its co-composting with agricultural wastes. AU - Paredes,C, AU - Bernal,M P, AU - Cegarra,J, AU - Roig,A, PY - 2002/7/31/pubmed PY - 2003/1/30/medline PY - 2002/7/31/entrez SP - 1 EP - 8 JF - Bioresource technology JO - Bioresour. Technol. VL - 85 IS - 1 N2 - The use of maize straw (MS) or cotton waste (CW) as bulking agents in the composting of olive mill wastewater (OMW) sludge was compared by studying the organic matter (OM) mineralisation and humification processes during composting and the characteristics of the end products. Both composts were prepared in a pilot-plant using the Rutgers static-pile system. The use of CW instead of MS to compost OMW sludge extended both the thermophilic and bio-oxidative phases of the process, with higher degradation of polymers (mainly lignin and cellulose), a greater formation of nitrates, higher total nitrogen losses and a lower biological nitrogen fixation. The CW produced a compost with a more stabilised OM and more highly polymerised humic-like substances. In the pile with CW and OMW sludge, OM losses followed a first-order kinetic equation, due to OM degradation being greater at the beginning of the composting and remaining almost constant until the end of the process. However, in the pile with MS and OMW sludge this parameter followed a zero-order kinetic equation, since OM degraded throughout the process. The germination index indicated the reduction of phytotoxicity during composting. SN - 0960-8524 UR - https://www.unboundmedicine.com/medline/citation/12146635/Bio_degradation_of_olive_mill_wastewater_sludge_by_its_co_composting_with_agricultural_wastes_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(02)00078-0 DB - PRIME DP - Unbound Medicine ER -