Assessment of the effect of particle size and selected physico-chemical and biological parameters on the efficiency and quality of composting of garden waste

Mishra, Sandeep Kumar; Yadav, Kunwar D.

doi:10.1016/j.jece.2022.107925

Cited by 14 publications

(6 citation statements)

References 60 publications

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“…The highest temperature of 58 • C was recorded for the C/N value of 20 on day 8, followed by 51.5 • C and 48 • C for C/N 11.75 and 30.5 for the same day, respectively. This is in agreement with established experimental results, which report optimum composting at a C/N ratio between 15 and 30 [36].…”

Section: Effect Of C/n Ratio On Composting Performancesupporting

confidence: 93%

“…A moisture content of less than 35 to 40% hinders the activity of microorganisms and the rate of compost formation [35]. On the other hand, excessive moisture makes the compost and bed material heavier, and the pressure required and power consumed by the blower increase [36]. Figure 2a shows the before-composting and Figure 2b shows the after-composting contrast of the organic matter.…”

Section: Optimum Moisture Content Requiredmentioning

confidence: 99%

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Assessment of Energy-Efficient Spouted Bed Aerobic Composting Performance for Municipal Solid Waste: Experimental Study

Kaneesamkandi,

Sayeed

2023

Processes

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Municipal solid waste contains a high percentage of organic waste, and when it is not disposed of, it becomes a threat to the environment by contaminating the air, water, and soil. Composting is one of the recovery techniques in which the end product of waste eventually contributes to the agriculture industry, reducing the harmful effects on the environment. Composting municipal solid waste is a clean and effective technique for waste disposal. The mechanized composting process is carried out by several methods, like the windrow method or the rotary drum method. However, large-scale composting processes involve energy consumption and labor costs for waste preparation and handling. This increases the market cost of compost. Hence, an energy-efficient composting technique with minimum environmental impact is needed. This research work aims to analyze the performance of an energy-efficient spouted bed technique for aerobic composting of municipal solid waste for the first time using spouted bed technology with sand as the bed material. Spouted bed composting handles the waste using a pneumatic method with minimum power consumption in comparison to conventional mechanical methods with windrow processes or rotary composting machines. The experimental procedure involves a test run of waste along with bed material and the collection of temperature variations, pH variations, moisture variations, and volatile matter content during the progression of the composting process. The results of this experimental study on a single batch of waste are then used to analyze the quality of the compost generated and compare it with existing results. Specific energy consumption for the process was less than 800 kJ/ton of raw waste input, which is much less than the energy used for conventional composting techniques. pH, volatile content, moisture, and temperature measurements indicated agreement with the established parameters of the composting process.

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Section: Effect Of C/n Ratio On Composting Performancesupporting

confidence: 93%

Section: Optimum Moisture Content Requiredmentioning

confidence: 99%

Assessment of Energy-Efficient Spouted Bed Aerobic Composting Performance for Municipal Solid Waste: Experimental Study

Kaneesamkandi,

Sayeed

2023

Processes

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“…Contrary to what was observed for the size reduction pretreatment, the preliminary extraction did not entail significant differences in the evolution of the process. Ultimately, the microorganisms involved in the composting process proved to be able to deal with the initial phenol content without negative effects as also observed by Santos et al [57], instead being more influenced by process conditions such as the particle size of the pomace [59].…”

Section: Polyphenols Extractionmentioning

confidence: 56%

Combining Different Approaches for Grape Pomace Valorization: Polyphenols Extraction and Composting of the Exhausted Biomass

et al. 2022

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Grape pomace represents 60%, by weight, of the solid side-streams of the wine-making process. The quantities produced, seasonality, and the presence of polyphenols pose economic and environmental issues that require proper management approaches based on the principles of sustainability and circular economy. The present work focuses on the combined application of solid–liquid extraction of polyphenols from ground grape pomace using a hydroethanolic mixture and the composting of the exhausted pomace. The obtained results support the possibility of recovering approximately 76.5 g of extract per kg of dry grape pomace (or 1.8 g of total phenols per kg of dry grape pomace). The composting process was not affected by the extraction process. On the contrary, the composting process was enhanced by the pomace particle size reduction, in terms of final biostability and content of humic acids.

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“…Thus, a substantial increase in N content was observed at the end of the composting process. Mishra and Yadav (2022) stated that N concentration generally increases at the end of the composting process due to the activity of nitrogen-fixing bacteria. The linear effect shows that an increase in PS would significantly enhance N release in the final compost.…”

Section: Organic Matter Nitrogen and Potassiummentioning

confidence: 99%

Optimization of watermelon waste as a bulking agent for sustainable co-composting of livestock manures using response surface methodology

Nurin,

Tee,

Chin

et al. 2024

Front. Sustain. Food Syst.

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Global human population growth has resulted in significant intensive agricultural activity, posing substantial challenges to waste management and environmental conservation. Watermelon waste (WW), chicken manure (CM) and horse manure (HM) are among the main contributors to agricultural waste due to their abundant waste production. This study aims to manage the daily production of these wastes by utilizing WW as a bulking agent in the co-composting of CM and HM. Response surface methodology (RSM) was employed to analyze the effects of four independent factors: HM:CM composition, particle size, composting period, and bulking agent amount. Thirty treatments were developed using central composite design and in-vessel composting reactors were employed to study the relationship between the factors involved and compost physicochemical quality parameters. The results demonstrated significant effects on organic matter (OM), nitrogen (N), potassium (K), dry matter, moisture content, bulk density, and pH, while the carbon-to-nitrogen ratio (C/N) and phosphorus level were not affected. The optimized co-composting conditions obtained from RSM were 75:25 for HM:CM composition (%), 0.5 cm for particle size, 40 days for composting period, and 10% of WW, resulting in a compost with 61% OM, 2.5% N, and 2.5% K. These optimal conditions agreed closely with the predicted values; root mean square prediction error (RMSPE) was less than 0.50, revealing the success of RSM in determining optimal process parameters and developing models for predicting responses. Our study demonstrated that WW as a bulking agent in the co-composting of CM and HM has significantly enhanced the organic matter and nutrient levels of the final compost product.

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Assessment of the effect of particle size and selected physico-chemical and biological parameters on the efficiency and quality of composting of garden waste

Cited by 14 publications

References 60 publications

Assessment of Energy-Efficient Spouted Bed Aerobic Composting Performance for Municipal Solid Waste: Experimental Study

Assessment of Energy-Efficient Spouted Bed Aerobic Composting Performance for Municipal Solid Waste: Experimental Study

Combining Different Approaches for Grape Pomace Valorization: Polyphenols Extraction and Composting of the Exhausted Biomass

Optimization of watermelon waste as a bulking agent for sustainable co-composting of livestock manures using response surface methodology

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