Rapid mineralisation of the Organic Fraction of Municipal Solid Waste

Martínez-Valdez, Francisco Javier; Martínez-Ramírez, Cándida; Martínez-Montiel, L.; Favela‐Torres, Ernesto; Soto-Cruz, N.O.; Ramírez-Vives, Florina; Saucedo‐Castañeda, Gerardo

doi:10.1016/j.biortech.2014.12.083

Cited by 27 publications

(28 citation statements)

References 31 publications

(42 reference statements)

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“…Oxygen uptake rate and accumulated oxygen during the aerobic degradation of raw OFMSW is shown in Figure 1B and C respectively. The OUR showed an initial peak presumably as a consequence of the presence of readily biodegradable compounds at the beginning of the process (Martínez-Valdez et al, 2015). A pronounced decrease was observed later until the maximum OUR was achieved at around day 5 (3.1 ± 0.4 g O 2 kg -1 DM h -1 ).…”

Section: Evolution Of the Degradation Aerobic Processmentioning

confidence: 98%

The Effect of a Short Term Aerobic Pretreatment Step on the Anaerobic Co-digestion of the Organic Fraction of Municipal Solid Wastes: Liquid Extract Addition Versus Solid Phase Addition

Martínez-Valdez

Komilis

Saucedo‐Castañeda

et al. 2016

Waste Biomass Valor

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Section: Evolution Of the Degradation Aerobic Processmentioning

confidence: 98%

The Effect of a Short Term Aerobic Pretreatment Step on the Anaerobic Co-digestion of the Organic Fraction of Municipal Solid Wastes: Liquid Extract Addition Versus Solid Phase Addition

Martínez-Valdez

Komilis

Saucedo‐Castañeda

et al. 2016

Waste Biomass Valor

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“…Furthermore, a reduction in process time (18 days) concluded that microbe aided composting is an economic viable technique. An MSW study was done by Martínez Valdez et al (2015), to check the effect of pH, C/N ratio, temperature and microbial consortium on organic fraction mineralization (CO2 production and formation). It was found that highest CO2 rate (5.28 d/1) was produced at C/N ratio 30, 27 C temperature and 8% inoculum addition.…”

Section: Microbial Additivesmentioning

confidence: 99%

Microbes as vital additives for solid waste composting

Rastogi

Nandal

Khosla

2020

Heliyon

170

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Composting is a natural process that stems through microbial succession, marking the degradation and stabilization of organic matter present in waste. The use of microbial additives during composting is considered highly efficient, likely to enhance the production of different enzymes resulting in better rate of waste degradation. In lesser developed countries, composting has emerged as a vital technology to recycle the biodegradable waste while generating a useful product. Depending on the composition of the waste material, it can either directly undergo composting or homogenized prior to secondary waste treatment methods such as landfilling. However, a relatively expensive downstream handling all along is a main hurdle towards economics of the process. Although basic methodology and recent approaches are known in crucial aspects of the process through various reviews, exploring the behavior of effective microbial additives will be resourceful. In this review, to fill in the gap, studies related to microbial composting of municipal solid and food waste were acknowledged. Here in, factors that could slow down the composting process and affect the compost quality were addressed. Lastly, the review pictured a positive simulation and stated how excellent results, can be achieved by microbial additives during composting.

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“…Metabolic changes in microorganisms involved in the bioprocess lead to changes in respiration intensity [ 11 ] and heat release. Respirometry is often used to assess aerobic processes in solid-phase cultivation and indicates the degree of potential mineralization or decomposition of the material [ 11 , 12 ]. In the absence of high microbial activity, the respiration rate is low; therefore, the material is more stable.…”

Section: Introductionmentioning

confidence: 99%

“…It should be noted that OFMSW composting has been studied in sufficient detail on model substrates with various bulking agents or a mixture of food and plant waste (grass, leaves) [ 11 , 13 , 14 ]. In our opinion, that does not fully correspond to actual waste, such as ms-OFMSW.…”

Section: Introductionmentioning

confidence: 99%

“…Numerous studies are devoted to the respirometrical estimation of the general biological activity during OFMSW composting [ 6 , 11 , 12 ], and the bacterial community and its relationship with the physicochemical parameters of composting [ 6 , 7 , 14 ]. However, there is insufficient research showing the development of both prokaryotic and fungal components of microbiota combined with environmental factors during ms-OFMSW composting.…”

Section: Introductionmentioning

confidence: 99%

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Microbiota Dynamics of Mechanically Separated Organic Fraction of Municipal Solid Waste during Composting

et al. 2021

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Mechanical-biological treatment of municipal solid waste (MSW) facilitates reducing the landfill workload. The current research aimed to study general activity parameters, content, functions, and diversity of fungal and prokaryotic microbiota in mechanically separated organic fraction of MSW (ms-OFMSW) composting, without using bulking agents and process-promoting additives. During 35 days of composting, vigorous emission of CO2 (max. 129.4 mg CO2 kg−1 h−1), NH3 (max. 0.245 mg NH3 kg−1 h−1), and heat release (max. 4.28 kJ kg−1 h−1) occurred, indicating intense microbial activity. Immediately following the preparation of the composting mixture, eight genera of lactic acid bacteria and fungal genera Rhizopus, Aspergillus, Penicillium, Agaricus, and Candida were predominant. When the temperature increased to more than 60 °C, the microbial biodiversity decreased. Due to succession, the main decomposers of ms-OFMSW changed. The Bacillaceae family, the genera Planifilum, Thermobifida, and Streptomyces, and the fungal genera Thermomyces and Microascus were involved in the processes of organic matter mineralization at the high-temperature and later stages. The biodiversity of the microbiota increased at the stages of cooling and maturation under conditions of relatively high nitrogen content. Thus, the microbial community and its succession during ms-OFMSW composting were characterized for the first time in this work.

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Rapid mineralisation of the Organic Fraction of Municipal Solid Waste

Cited by 27 publications

References 31 publications

The Effect of a Short Term Aerobic Pretreatment Step on the Anaerobic Co-digestion of the Organic Fraction of Municipal Solid Wastes: Liquid Extract Addition Versus Solid Phase Addition

The Effect of a Short Term Aerobic Pretreatment Step on the Anaerobic Co-digestion of the Organic Fraction of Municipal Solid Wastes: Liquid Extract Addition Versus Solid Phase Addition

Microbes as vital additives for solid waste composting

Microbiota Dynamics of Mechanically Separated Organic Fraction of Municipal Solid Waste during Composting

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