Maturity and stability assessment of composted tomato residues and chicken manure using a rotary drum bioreactor

The efficiency of the composting process for tomato residues and chicken manure was estimated after monitoring of the rotary composting system. Physicochemical parameters and Compost Quality Index were evaluated. The tomato residues (leaves, stems, and some green and damaged fruits) were collected,...

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Bibliographic Details
Published in:Journal of the Air & Waste Management Association (1995) 2021-05, Vol.71 (5), p.529-539
Main Authors: Rashwan, Mohamed A., Naser Alkoaik, Fahad, Abdel-Razzak Saleh, Hesham, Blanqueza Fulleros, Ronnel, Nagy Ibrahim, Mansour
Format: Article
Language:English
Subjects:
Ammonia
Bioreactors
Carbon dioxide
Chickens
Composting
Composts
Electrical conductivity
Electrical resistivity
Fertilizers
Germination
Manures
Maturity
Nitrogen
Parameters
Poultry
Poultry manure
Residues
Soil conditioners
Soil conditions
Stability analysis
Substrates
Tomatoes
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Summary:The efficiency of the composting process for tomato residues and chicken manure was estimated after monitoring of the rotary composting system. Physicochemical parameters and Compost Quality Index were evaluated. The tomato residues (leaves, stems, and some green and damaged fruits) were collected, cut into small pieces, moistened approximately (60-65%), and mixed with 20% chicken manure then distributed into three rotary drum bioreactors. The obtained results showed that, the temperature above 50°C was maintained for more than two days. Carbon: nitrogen (C:N) ratio was reduced from 30:1 to 19.13:1. The pH value ranged between 7 and 8.80 during the composting process, while the electrical conductivity (EC) ranged between 2.67 to 4.53 dS/m. Both compost quality parameters (Dewar and germination index) and (Solvita-CO 2 and Solvita-NH 3 ) indicated that, the final compost is stable and mature. Implications: The idea of this research revolves around assessing the maturity and stability of the compost resulting from mixing tomato residues with chicken manure, using a rotary drum bioreactor which is characterized by reducing the time of the active phase to several hours or days instead of weeks or months. Several tests related to the maturity and stability of mixture have been used to judge its quality. Also, many parameters related to this topic were monitored and discussed with many previous researches to determine the importance of benefiting from mixing the different wastes together and obtaining a good fertilizer ready for application as an agricultural substrate or a soil conditioner.
ISSN:1096-2247
2162-2906
DOI:10.1080/10962247.2020.1859416