Biological treatment of the organic fibre from the autoclaving of municipal solid wastes; preliminary results

García, Ana; Maulini, Caterina; Torrente, Jorge; Sánchez, Antoni; Barrena, Raquel; Font, Xavier

doi:10.1016/j.biosystemseng.2012.05.005

Cited by 13 publications

(16 citation statements)

References 26 publications

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“…It can, therefore, be assumed that such compounds were formed during autoclaving of the municipal waste used in the present study. This may well have lowered the efficiency of anaerobic digestion in mesophilic conditions, as reported by Tampio et al [12] and García et al [5]. In addition, the efficiency of anaerobic digestion under mesophilic conditions was not reduced in the present study, as also reported by Nakajima-Kambe et al [31].…”

Section: Resultssupporting

confidence: 79%

“…The authors observed lower specific methane yield during digestion of autoclaved substrate even after a long period of microbial acclimatization (473 days of the process). Similar results were obtained by García et al [5], who compared the efficiency of the process of anaerobic digestion of autoclaved (145 °C, 600 kPa) and untreated source-separated OFMSW (organic fraction of municipal solid waste). Both Tampio et al [12], as well as García et al [5], indicate that reduced biogas production can be caused by Maillard compounds produced during the autoclaving process.…”

Section: Introductionsupporting

confidence: 85%

“…Due to the fact that MHT is a technology in the developmental phase, there is a need to expand knowledge in this field. The uniqueness of the organic remaining fraction obtained during MHT of municipal waste, including its homogeneity and fibrous structure, makes it impossible to determine the impact Although autoclaving dissolves paints on cans and other packages and thus could contribute to heavy metal pollution of organic fiber [4,5], contamination resulting from autoclaving is similar to that from the most effective mechanical-biological treatment systems [4]. The process of autoclaving disrupts the lignocellulosic structure in organic waste [6], which theoretically facilitates the decomposition of organic matter, both in aerobic and anaerobic conditions.…”

Section: Introductionmentioning

confidence: 99%

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Mesophilic and Thermophilic Anaerobic Digestion of Organic Fraction Separated during Mechanical Heat Treatment of Municipal Waste

Kasiński

2020

Applied Sciences

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The objective of this study was to investigate the effect of process temperature on semi-continuous anaerobic digestion of the organic fraction separated during autoclaving of municipal waste. Tests were carried out in reactors with full mixing. Biogas production was higher in thermophilic conditions than in mesophilic conditions (0.92 L/g volatile solids at 55 °C vs. 0.42 L/g volatile solids at 37 °C, respectively). The resulting methane yields were 0.25-0.32 L CH4/g VS and 0.56–0.70 L CH4/g VS in mesophilic and thermophilic conditions, respectively. In both variants, the methane share was over 70% v/v. This work also discusses the potential impact of Maillard compounds on the efficiency of the fermentation process, which were probably produced during the process of autoclaving of municipal waste. These results indicate that, after autoclaving, the organic fraction of municipal waste can be an effective substrate for anaerobic digestion in thermophilic conditions.

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Section: Resultssupporting

confidence: 79%

Section: Introductionsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

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Mesophilic and Thermophilic Anaerobic Digestion of Organic Fraction Separated during Mechanical Heat Treatment of Municipal Waste

Kasiński

2020

Applied Sciences

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“…have not yet been demonstrated as commercially viable including secondary fiber [8][9][10] , ethanol 11-4 12 , anaerobic digestion (AD) [13][14][15][16] , compost [17][18] , and others. Anaerobic digestion has been demonstrated effective for reducing the biodegradable fraction of MSW to biogas yet produces a significant digestate fraction that requires further re-use or disposal.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Carbonization of Autoclaved Municipal Solid Waste Pulp and Anaerobically Treated Pulp Digestate

Reza

Coronella

Holtman

et al. 2016

ACS Sustainable Chem. Eng.

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In this study, the autoclaved organic fraction of municipal solid waste pulp (OFMSW) and the digestate from OFMSW pulp after anaerobic digestion (AD) were processed by hydrothermal carbonization (HTC) at 200, 250, and 300 °C for 30 min and 2 h. The focus of this work was to evaluate the potential for producing an energy-dense solid hydrochar from either OFMSW or digestate by HTC. The fate of inorganics, especially the heavy metals in hydrochar is discussed. In addition, the aqueous products were analyzed to identify the chemicals produced and the chemical changes during HTC. A carbon balance was performed from the solid and liquid phase analyses. Moreover, two conceptual MSW treatments consisting of autoclaving with or without AD, but including HTC were proposed and mass and energy balances were performed.From the proximate, ultimate, FTIR, and fiber analyses, the hydrochar becomes increasingly energy and inorganic dense with the increase of HTC temperature.

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“…MHT was shown to be applicable in mixing with old corrugated containers fibers (Ashley and Hodgson 2003;Ashley and Hodgson 2004), improving the recyclability of wastepaper (Hung et al 2012), wasted bamboo chopsticks (Hung et al 2013), and poly(ethylene terephthalate) (PET) plastics (Holtman et al 2012). Autoclavepretreated MSW was also used to produce second-generation biofuels (Antizar-Ladislao and Turrion-Gomez 2008; Shi et al 2009), and bioenergy (Antizar-Ladislao and TurrionGomez 2008), and it has been applied in the production of fermentable sugars after hydrolysis (Li et al 2012) and the generation of biogases (García et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Combining Cellulosic Ethanol Fermentation Waste and Municipal Solid Waste-derived Fiber with a Kraft Black Liquor-derived Binder for Recycled Paper Making

Ko¹,

Leu²,

Chang³

et al. 2015

BioResources

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Rice straw cellulosic ethanol fermentation waste (CEFW) and municipal solid waste derived fiber (MSWF) were used as alternative fibers for recycled paper making. The fibers were mixed with old newspaper (ONP) fiber at different mass ratios to produce standard recycled papers and paperboards. A "green" adhesive binder derived from kraft black liquor (BLDB) was used to improve the physical properties of the wastederived paper products. The values of these properties increased linearly with increasing average fiber lengths, regardless of the type of fiber used in the products. BLDB improved the physical properties of the products by 50% for papers and 85% for paperboards, and the performance of this binder was comparable to a commercial urea formaldehyde resin binder. Thermal pressing, however, did not improve the physical properties of the binder-enhanced paper products. With the addition of the adhesive binder, CEFW and MSWF showed reasonable substitution potential for ONP fiber by providing suitable tensile and bursting strength in the recycled paper products. The critical fiber length, which produced the minimum strength properties for the recycled paper products, was approximately 1020 m.

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Biological treatment of the organic fibre from the autoclaving of municipal solid wastes; preliminary results

Cited by 13 publications

References 26 publications

Mesophilic and Thermophilic Anaerobic Digestion of Organic Fraction Separated during Mechanical Heat Treatment of Municipal Waste

Mesophilic and Thermophilic Anaerobic Digestion of Organic Fraction Separated during Mechanical Heat Treatment of Municipal Waste

Hydrothermal Carbonization of Autoclaved Municipal Solid Waste Pulp and Anaerobically Treated Pulp Digestate

Combining Cellulosic Ethanol Fermentation Waste and Municipal Solid Waste-derived Fiber with a Kraft Black Liquor-derived Binder for Recycled Paper Making

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