Influence of bulking agent on sewage sludge composting process

Yáñez, Remedios; Alonso, José Luís; Díaz, María José Moreno

doi:10.1016/j.biortech.2009.05.073

Cited by 89 publications

(45 citation statements)

References 21 publications

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“…The results of Zhao et al (2011) revealed that when using straw, sawdust and their combination as the BA, straw has substantial biodegradation potential in the aerobic process while sawdust has poor capacity to be degraded. Yañez et al (2009) studied four types of compost in a laboratory reactor, consisting of mixtures of pruning wastes (Acacia dealbata as a BA) with sewage sludge, concluding that the optimal amounts of sewage sludge for co-composting with Acacia indicate that moderate amounts of sludge (1/1) would be the be or olive leaf as BA improved the progress of the composting process. Furthermore, both mature composts were equally free of phytotoxicity and showed a similar composition.…”

mentioning

confidence: 99%

Effect of airflow on biodrying of gardening wastes in reactors

Mendoza

Herrera-Prats

Robles-Martínez

et al. 2013

Journal of Environmental Sciences

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Biodrying consists of reducing moisture by using the heat from aerobic bio-degradation. The parameters that control the process are: aeration, temperature during the process, initial moisture of biowaste, and temperature and relative humidity of the input air. Lawn mowing and garden waste from the gardens of the University Jaume I, Castellón (Spain) were used as a substrate. Biodrying was performed in 10 reactors with known air volumes from 0.88 to 6.42 L/(min·kg dry weight (dw)). To promote aeration, 5 of the reactors had 15% of a bulking agent added. The experiment lasted 20 days. After the experiments it was found that the bulking agent led to greater weight loss. However, the increased airflow rate was not linearly proportional to the weight loss.

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confidence: 99%

Effect of airflow on biodrying of gardening wastes in reactors

Mendoza

Herrera-Prats

Robles-Martínez

et al. 2013

Journal of Environmental Sciences

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“…Characteristic values of organic matter content and total nitrogen in the digested sludge are 50-70% and 1.5-2.5%, respectively. In the first week of the digested sludge composting the total carbon is reduced by between 11% and 27% and total nitrogen is reduced by between 13% and 23% (Pakou et al, 2009;Yañez et al, 2009 Table 6. Control parameters of digestate quality for application in agriculture (WRAP 2010) Highest degradation rates in the compost pile are achieved with air oxygen concentration above 15% which also prevents formation of anaerobic zones.…”

Section: The Anaerobic Digestion Residue Managementmentioning

confidence: 99%

Anaerobic Treatment and Biogas Production from Organic Waste

Zupančič¹,

Grilc²

2012

Management of Organic Waste

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“…Generally, modification of physical properties of composting feed-stock may resulted from different bulking agents as well as change the biodegradation kinetics and composting performance [7,8,10]. Thus, it is a prerequisite for collection program managers to have detail information about the nature and quantity of solid waste generated in order to set appropriate management systems which in this paper will be focused on composting.…”

Section: Introductionmentioning

confidence: 99%

Chns analysis towards food waste in composting

Firdaus¹,

Samah²,

Hamid³

2018

J. CleanWAS

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High food waste generation in Malaysia that reached up to 15, 000 tonnes per day assign for major problems towards environment, economy and social aspect. Alternative method had been studied for the past years, but composting was seen among the best possible solution to treat this matter. Composting not only has an environmentally method but it also produces a valuable end product that will benefit in agricultural sector. Further studies had been done in this paper to represent their macro and micro nutrient quality as well as their bioavailability towards plant and the analysis of data collected in both CHNS analyser and mathematical method using ultimate analysis. This study also applied enhanced composting process with its segregation, drying, grinding and standard aeration time. Each container has been rotated for 5 minutes yet different resting time was applied which are 25, 55, 155 minutes namely A, B, C and D within 2 hours period. Result shown that overall Carbon (C), Nitrogen (N) and Sulphur (S) concentration increases as the higher aeration was applied while the Hydrogen vice versa. The highest elemental percentage distribution recorded is carbon (31%) while the lowest recorded is S (0.115%). The data collected from Ultimate Analysis was seen not applicable to be use as it has the same content as food waste after composting. The compound molecular formula recorded was C29H7N5S. Regarding ratio of carbon to nitrogen results, it was found that it ranged from 5.39 to 5.71% for different compost treatment under study, where the lowest value of C and N ratio (5.39%) for sample C and the highest value (5.71%) was obtained for sample B with all has the same C/N ratio which is 6: 1 which suitable range in application of soil amendment. Therefore, this study found a significant relationship between chemical factors and compost formation which contribute to better analysis, especially to food waste management.

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Influence of bulking agent on sewage sludge composting process

Cited by 89 publications

References 21 publications

Effect of airflow on biodrying of gardening wastes in reactors

Effect of airflow on biodrying of gardening wastes in reactors

Anaerobic Treatment and Biogas Production from Organic Waste

Chns analysis towards food waste in composting

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