Application of validated mathematical model of composting process for study the effect of air flow rate on process performance

Mustafić, Nesib; Petrić, Ivan; Karić, Ervin

doi:10.7251/jepm1709062m

Cited by 3 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, these simulations are discussed to test the importance of the physical properties of PLA and the effect that the influencing factors of the composting process have on its biodegradation. The parameter values used within the model simulations have been taken from secondary sources [17][18][19][20][21][22][23][24][25][26][27] (see Table 1). In Figure 2(a), the degradation behavior of the dry composting matter (m c ) is described.…”

Section: Resultsmentioning

confidence: 99%

Mathematical model of polylactic acid biodegradation under controlled composting conditions

Baldera-Moreno

Rojas‐Palma

Andler

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The environment suffers constant damage due to the excessive manufacture of non-degradable materials. Since petroleum-derived plastic polymers degrade slowly, it is necessary to promote the use of biodegradable plastics, such as polylactic acid. Polylactic acid is produced from natural and renewable resources, it has suitable physical and chemical properties, and biodegrades under appropriate temperature and humidity conditions, which are achieved in the composting process. Currently, there are models that are based on the measurement of carbon dioxide, and mass loss, among others. However, there are no models that describe the biodegradation of polylactic acid considering the effect of the influencing factors of the composting process. The objective of this work is to model the dynamics of polylactic acid biodegradation under controlled composting conditions, considering the main influencing factors, such as temperature, moisture content, and oxygen. Using mathematical modeling from ordinary differential equations as a methodology, simulations were carried out based on the degradation of dry matter from different substrates. The results aim to predict the dynamics of polylactic acid biodegradation, through a model that integrates the influencing factors of the composting process.

show abstract

Section: Resultsmentioning

confidence: 99%

Mathematical model of polylactic acid biodegradation under controlled composting conditions

Baldera-Moreno

Rojas‐Palma

Andler

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…In Table 1, the notations for each variable and their initial values are described. In addition, the values of the parameters used to perform the numerical simulations are detailed in Table 2, which are mostly taken from secondary sources [5,36,39,16,15,50,13,38,17,35,46,56,14].…”

Section: Effects Of Initial C/n Ratio On Pla Mass Biodegradationmentioning

confidence: 99%

A theoretical description of polylactic acid biodegradation in composting processes through mathematical modeling

Baldera-Moreno,

Rojas,

Andler

2023

Preprint

View full text Add to dashboard Cite

Polylactic acid (PLA) is a bio-based plastic that is biodegradable under appropriate conditions of temperature, humidity and oxygen, which are achieved in the composting process. The objective of this work is to formulate a mathematical model that predicts the biodegradation of polylactic acid in composting processes. We performed a qualitative analysis of the reduced composting mass system, which is non-linear and non-autonomous. First, the reduced model was transformed into an autonomous system, showing that their solutions are positive, bounded and non-periodic. Furthermore, it was shown that the origin is locally and globally exponentially stable, the axial equilibrium is unstable and that a degenerate transcritical bifurcation exists at the origin. Simulations of the reduced system indicated that the PLA mass is completely biodegraded when the time tends to infinity, which was shown theoretically. In addition, numerical simulations of the complete composting system were performed considering three initial values of the carbon/nitrogen ratio. It was concluded that the initial carbon/nitrogen ratio of 32.5 reached 90% of PLA biodegradation in approximately 150 days. This work provides a mathematical tool applied to the field of biotechnology of biodegradable plastics.

show abstract

A review on mathematical modeling of in-vessel composting process and energy balance

Ajmal

Shi

Uddin

et al. 2020

Biomass Conv. Bioref.

View full text Add to dashboard Cite

Application of validated mathematical model of composting process for study the effect of air flow rate on process performance

Cited by 3 publications

References 10 publications

Mathematical model of polylactic acid biodegradation under controlled composting conditions

Mathematical model of polylactic acid biodegradation under controlled composting conditions

A theoretical description of polylactic acid biodegradation in composting processes through mathematical modeling

A review on mathematical modeling of in-vessel composting process and energy balance

Contact Info

Product

Resources

About