Composting of domestic refuse and sewage sludge. II. Evolution of carbon and some “humification” indexes

Jiménez, Emeterio Iglesias; García, Víctor Pérez

doi:10.1016/0921-3449(92)90034-y

Cited by 43 publications

(8 citation statements)

References 20 publications

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“…After composting, the EC of C/N 15 and ST decreased and increased slightly, respectively, while the EC of the other treatments showed no significant change. CEC reflects the ability of compost to absorb heavy metal cations 17 , which is usually positively correlated with humification degree 18 . The CEC of all treatments showed an increasing trend during composting (Fig.…”

Section: Resultsmentioning

confidence: 99%

Potential mechanisms involving the immobilization of Cd, As and Cr during swine manure composting

Guo

Wang

Liu

2020

Sci Rep

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This study aims to investigate the relationship between key physicochemical parameters related to composting process and bioavailability of Cd, As and Cr during swine manure composting through regulating different initial carbon to nitrogen (C/N) ratios (15:1, 20:1, 25:1) and bulking agent types (straw, green waste). Results showed that higher initial C/N ratio of 20:1 or 25:1 and straw as bulking agent were optimal to reduce the bioavailability of Cd, As and Cr (62.4%, 20.6% and 32.2% reduction, respectively). Redundancy analysis implied that the bioavailability of Cd was significantly associated with total phosphorus and total nitrogen, deducing the formation of phosphate precipitation and biosorption might participated in the reaction process, while that of As and Cr were mainly influenced by organic matter (OM), cation exchange capacity (CEC) and OM, CEC, electric conductivity, respectively. A total of 48.5%, 64.6% and 62.2% of Cd, As and Cr redistribution information could be explained by the above parameters. Further correlation analysis revealed that bioavailable As and Cr were negatively correlated with humic acid to fulvic acid ratio. In summary, this study confirms that the mechanisms of phosphate precipitation, biosorption and humification played critical role in reducing Cd, As and Cr bioavailability during swine manure composting.

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Section: Resultsmentioning

confidence: 99%

Potential mechanisms involving the immobilization of Cd, As and Cr during swine manure composting

Guo

Wang

Liu

2020

Sci Rep

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“…A composting process results in the fall of C/N ratio because of microbial activities (the conservation of nitrogen and the transformation of carbon to CO 2 and humic substances). It has been reported that when the C/N ratio is less than 20, the compost will be mature and can be used without any restriction [84]. The ideal C/N ratio or well-matured compost is about 10, which is usually difficult to achieve.…”

Section: Resultsmentioning

confidence: 99%

Intergraded Applied Methodology for the Treatment of Heavy Polluted Waste Waters from Olive Oil Industries

Zorpas

Inglezakis

2011

Applied and Environmental Soil Science

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The annual olive oil production in Cyprus is in the range of 2700–3100 t y−1, resulting in the generation of significant amount of waste. The cocomposting of the olive oil solid residue (OOSR) and the treated wastewaters (with Fenton) from the olive oil production process with the application of reed beds has been studied as an integrated method for the treatment of wastewater containing high organic and toxic pollutants under warm climate conditions. The experimental results indicated that the olive mill wastewater (OMW) is detoxified at the end of the Fenton process. Specifically, COD is reduced up to 65% (minimum 54.32%) by the application of Fenton and another 10–28% by the application of red beds as a third stage. The final cocomposted material of OOSR with the treated olive mile wastewater (TOMW) presents optimum characteristics and is suitable for agricultural purpose.

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“…Sanchez-Monedero et al [36] also reported, during composting of different organic-waste mixtures, an increase of the degree of polymerisation from 0.65 in raw MSW mixtures to final values of 1.86-2.00 in composts. This ratio has been proposed as an indicator of maturity by authors such as Iglesias Jõmenez and Perez Garcia [37].…”

Section: Progression Of Compostingmentioning

confidence: 99%

Physico-chemical analysis of tannery solid waste and structural characterization of its isolated humic acids after composting

Amir

Benlboukht

Cancian³

et al. 2008

Journal of Hazardous Materials

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Composting of domestic refuse and sewage sludge. II. Evolution of carbon and some “humification” indexes

Cited by 43 publications

References 20 publications

Potential mechanisms involving the immobilization of Cd, As and Cr during swine manure composting

Potential mechanisms involving the immobilization of Cd, As and Cr during swine manure composting

Intergraded Applied Methodology for the Treatment of Heavy Polluted Waste Waters from Olive Oil Industries

Physico-chemical analysis of tannery solid waste and structural characterization of its isolated humic acids after composting

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