The influence of the C: N ratio on the composting rate

Neugebauer, M.; Sołowiej, P.; Piechocki, Janusz; Czekała, Wojciech; Janczak, Damian

doi:10.12720/sgce.6.1.54-60

Cited by 11 publications

(5 citation statements)

References 12 publications

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“…It has also been reported that the loss of OM decreases the weight of the precomposted material and reduces the C/N ratio [46]. Therefore, the final values obtained from this process were suitable for the vermicomposting process [56].…”

Section: Organic Matter (Om) Total Organic Carbon (Toc) Total Nitromentioning

confidence: 85%

Valorization of Orange Peel Waste Using Precomposting and Vermicomposting Processes

et al. 2020

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The industrialization process of oranges generates waste, which is inadequately disposed of; this produces adverse effects on the environment. Among the alternatives for valorization is the vermicomposting process, which consists of the degradation of organic waste through the action of earthworms and microorganisms. Therefore, this research aimed to study this process using orange peel (OP) waste at the laboratory level. For this purpose, it was necessary to determine the degradation conditions through the monitoring of physicochemical parameters (temperature, pH, humidity, organic matter (OM), total organic carbon (TOC), total nitrogen (TN) and the carbon/nitrogen (C/N) ratio). To balance the substrate’s nutrients, load material (LM) that included vegetable waste and eggshells was added to three different mixtures: M1 (50% OP + 50% LM), M2 (40% OP + 60% LM) and M3 (60% OP + 40% LM). To condition the substrate for earthworm (Eisenia fetida) activity, a previous precomposting process was performed. The results showed that all the mixtures fulfilled the requirements for a quality and mature vermicompost; however, the highest concentrations for TN were in the mixtures M1 and M2. The total time required for degradation of the OP waste was 13 weeks.

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Section: Organic Matter (Om) Total Organic Carbon (Toc) Total Nitromentioning

confidence: 85%

Valorization of Orange Peel Waste Using Precomposting and Vermicomposting Processes

et al. 2020

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“…The optimal C/N ratio in the composting process is considered to be 25/1 to 35/1 (Guo et al, 2012). If the C/N ratio is higher than optimal, the composting process is slowed down because the activity of microorganisms is reduced, and at a lower C/N ratio, ammonia and unpleasant odors are generated (Neugebauer et al, 2017). There is a possibility of a successful composting process even at values of C/N ratios that are lower than optimal, and the research of some authors is shown in table 1.…”

Section: Composting Process Factorsmentioning

confidence: 99%

Microbiological activities in the composting process : A review

2021

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Composting is a technological process of waste management that is, with the help of microbiological activities in aerobic conditions, organic material is decomposed and stabilized into a biodegradable mixture and transformed into compost. This process of decomposition of organic matter has recently attracted a lot of attention due to its environmentally friendly methods in which additional environmental pollution is avoided. The composting process follows four phases (first mesophilic phase, thermophilic phase, second mesophilic phase, and maturation phase). The most important factors influencing the decomposition success are C/N ratio, humidity, temperature, substrate particle size, pH, oxygen content and microorganisms. Microorganisms such as bacteria, fungi, and actinomycetes act as chemical decomposers in the process of decomposition of organic matter into carbon dioxide, heat, water, hummus, and a relatively stable final organic product - compost. In the process of composting, microorganisms decompose the complex molecules of lignin, cellulose, and hemicellulose. The presence of different types of microorganisms is influenced by the composition of composite mixtures and changes in temperature through the phases of the composting process. At the beginning of compression, the microbial activity increases significantly, which causes a temperature rise. The initial dominance of bacteria is replaced by fungi that are most active in the process of compost maturation.This scientific paper aims to present an overview of the composting process and the role of beneficial microorganisms in the process of decomposition of organic matter of the compost mixture.

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“…Rice straw organic mulch contains N between 0.5 -0.8%, P between 0.07 -0.12%, K between 1.2 -1.7% (Desiana, 2013), and a C/N ratio of approximately < 15 after the decomposition process to increase plant growth (Neugebauer et al, 2017). According to Asmoro & Susanto (2016), the decomposition process of organic matter takes a long time, in presence of a starter/activator such as microbes.…”

Section: Effect Of Rice Straw Organic Mulch On Cocoa Seed Growthmentioning

confidence: 99%

The Effect of Tofu Liquid Waste and Organic Mulch on the Growth of Cocoa (Theobroma Cacao L.) Nursery Plants in a Polybag

Candra

Samah

2021

J. appl. agricultural sci. technol.

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This study aims to examine the influence of the concentration level of organic tofu liquid waste and rice straw mulch on the growth of cacao (Theobroma cacao L) seedlings. It was carried out using three variables, namely the concentration of tofu liquid waste and four treatment levels. These include treatments without tofu liquid waste 0 ml/kg/plant (T0), and with 60 ml/kg/plant (T1), 80 ml/kg/plant (T2), and 100 ml/kg/plant (T3), respectively. Furthermore, rice straw organic mulch factor with three levels, namely 15 gr/plant (15 tons/ha) (M1), 20 gr/plant (20 tons/ha) (M2), and 25 gr/plant (25 tons/ha) (M3) was also used. The results indicated that the concentration of liquid organic fertilizer derived from tofu liquid waste significantly affected plant height at the age of 3 months. The tallest plant measured 64.78 cm in height, with 21.33 leaves, stem diameter of 0.72, and leaf area of 17.58 cm2. Organic rice straw mulch did not have a significant effect on all plant factors. This showed that the application of liquid organic fertilizer tofu waste influences plant height, leaf number, and stem diameter, and there is no effect on the leaf surface, while rice straw mulch did not alter all plant variables.

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The influence of the C: N ratio on the composting rate

Cited by 11 publications

References 12 publications

Valorization of Orange Peel Waste Using Precomposting and Vermicomposting Processes

Valorization of Orange Peel Waste Using Precomposting and Vermicomposting Processes

Microbiological activities in the composting process : A review

The Effect of Tofu Liquid Waste and Organic Mulch on the Growth of Cocoa (Theobroma Cacao L.) Nursery Plants in a Polybag

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