Disposable diapers biodegradation by the fungus Pleurotus ostreatus

Espinosa-Valdemar, Rosa María; Turpin-Marion, Sylvie; Delfín-Alcalá, Irma; Vázquez‐Morillas, Alethia

doi:10.1016/j.wasman.2011.03.007

Cited by 48 publications

(26 citation statements)

References 5 publications

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“…Also, the median of BE was lower for experimental units with diapers (2.6% for diapers without plastic and 3.8% for diapers with plastic) than without diapers (24.4%). In comparison, Espinosa et al [11] obtained a BE of 14% with a substrate of diapers without plastic and enriched with grape pomace, and Fernandes et al [29] got a BE of 10.3% for white clean paper and 14.9% for printed paper. The focus of these works was on treating wastes with high cellulose content, not in increasing the yield of edible mushrooms.…”

Section: Discussionmentioning

confidence: 97%

“…Biodegradation was carried out according to the method proposed by Espinosa-Valdemar et al [11]. P. ostreatus was cultivated in bags of 5 kg, called experimental units, filled with the mixture substrate-co-substrate in a ratio of 65%-35%.…”

Section: Biodegradation Of Diapers By the Edible Fungus Pleurotus Ostmentioning

confidence: 99%

“…Biological treatments that valorize the cellulose content of used diapers, such as composting, and use as substrate in edible mushroom production have been investigated at laboratory or pilot scale [4,10,11].…”

Section: Introductionmentioning

confidence: 99%

“…In 1978, Chang et al [12] was a pioneer in the production of Pleurotus ostreatus with waste of wheat straw and oil palm, since then a variety of organic wastes have been investigated as substrate for cultivation of this fungus ( Table 1). Valorization of diapers as substrate in cultivation of P. ostreatus of used baby diapers and wheat straw was carried out by Espinosa-Valdemar [11]. However, straw is not easily obtained in urban centers, which are the higher producers of diapers.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Gardening Wastes as a Co-Substrate for Diapers Degradation by the Fungus Pleurotus ostreatus

et al. 2015

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Waste with high biomass content generated in cities in developing countries is sent to landfills or open dumps. This research aims to degrade biomass content in urban waste through cultivation, at pilot scale, of the edible mushroom Pleurotus ostreatus. First, the number of diapers used by one baby per week was measured with a survey in day care facilities. Then, cellulose content of diapers was assessed. Finally, cultivation of P. ostreatus was carried out using as substrate a mixture of diapers with gardening waste, a co-substrate readily available at urban settings. The factors assessed were strain of P. ostreatus (grey BPR-81, white BPR-5), conditioning of the substrate (diapers with and without plastic) and co-substrate (wheat straw, grass, and withered leaves). Results show that diapers are a OPEN ACCESSSustainability 2015, 7 6034 valuable source of biomass, as generation of diapers with urine is 15.3 kg/child/month and they contain 50.2% by weight of cellulose. The highest reductions in dry weight and volume (>64%) of substrates was achieved with the substrate diaper without plastic and co-substrate wheat straw. Although diapers with plastic and grass and leaves showed lower degradation, they achieved efficiencies that make them suitable as a co-substrate (>40%), considering that their biomass is currently confined in landfills.

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Section: Discussionmentioning

confidence: 97%

Section: Biodegradation Of Diapers By the Edible Fungus Pleurotus Ostmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Assessment of Gardening Wastes as a Co-Substrate for Diapers Degradation by the Fungus Pleurotus ostreatus

et al. 2015

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“…One of the untapped potentials is plastic waste derived from RUDD during the production of a product, and in its normal form it primarily contains plastics (polypropylene, polyethylene and polystyrene), cellulose pulp and super absorbent polymer [4]. The average weight of a clean disposable diaper is approximately 41 g, and plastic elements comprise up to 23 % of the overall diaper material composition [5].…”

Section: Introductionmentioning

confidence: 99%

Utilisation of recycled thermoplastics sourced from rejected-unused disposable diapers as polymer blends

Taufiq¹,

Mustafa²,

Mansor³

2017

J. MECH. ENG. SCI.

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The blending of two or more thermoplastics could produce polymer blends, which are preferable compared to developing a new type of plastic. This paper presents the study on the utilisation of recycled thermoplastic polymers which are recovered from rejectedunused disposable diapers. The aim of study is to characterise the effect of manufacturing temperature on the tensile and morphological properties of recycled plastic blend. Besides that, the polymer blend sourced from virgin materials was also prepared to compare the properties. The recycled and virgin materials were blended by using an internal mixer with fixed parameters. Later, the blended materials were crushed and moulded using hot compression moulding with temperature variations of 180 °C, 190 °C and 200 °C. The tensile tests were conducted in accordance with the ASTM D638 using a universal testing machine, followed by scanning electron morphological analysis. The results showed that as temperature increases, tensile strength decreases and tensile strain increases for both recycle and virgin blends. Tensile strength and strain for the recycled blend were also lower than the virgin blend at all temperatures, due to low miscibility in the recycled blend compared to the virgin one. The low miscibility caused more macrophase separation and resulted in poor adhesion between the polymer components. Also, the increase of temperature caused the tensile modulus to be reduced for the recycled blend. Meanwhile for the virgin blend, the modulus reduced at 190 °C but increased suddenly at temperature of 200 °C.

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Sodium polyacrylate inhibits fermentative hydrogen production from waste diaper‐like material

Sotelo-Navarro

Poggi‐Varaldo

Turpin-Marion

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: The inhibitory effect of a moisture-absorbent sodium polyacrylate (SPA), that is commonly used in disposable diapers, on the bio-hydrogen (H 2 ) generation from waste diaper-like material (WDM) was assessed in dark fermentation studies. Three types of treatments were evaluated in batch bioreactors at 37 ∘ C: mixture of bond paper and filter paper (WDM, no SPA), SPA alone (only SPA or control), and WDM spiked with SPA [paper plus sodium polyacrylate hydrogel (WDM-SPA)]. The WDM simulated the cellulosic fraction of diaper composition. RESULTS:The units with only SPA did not produce H 2 . The WDM-SPA units exhibited H 2 production 25% lower than those of bioreactors loaded with only WDM but no SPA. Cumulative H 2 production was 0.03, 4.22 and 5.50 mmolH 2 g TS -1 for the SPA, WDM-SPA and WDM reactors, respectively (0.04, 5.90 and 8.77 mmolH 2 g VS -1 ; 0.89, 132.19 and 196.45 NmLH 2 g VS -1 ). BioH 2 generation was related to predominance of the fermentation route that produces 1 mol L -1 of butyric acid (HBu) plus 2 mol L -1 H 2 in the WDM and WDM-SPA units, as suggested by the ratio A:B (acetic: butyric acids; A:B < 0.79 mg HAc-COD mg HBu-COD -1 in both cases).CONCLUSION: It seems that this is the first documented result on the inhibitory effect of SPA on the bioH2 fermentation of cellulosic wastes. However, further research should be carried out at different levels of SPA to determine, for instance, the half-inhibition value of SPA, that is, the concentration of SPA that would cause a 50% drop in H 2 generation of the non-SPA treatment.

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Disposable diapers biodegradation by the fungus Pleurotus ostreatus

Cited by 48 publications

References 5 publications

Assessment of Gardening Wastes as a Co-Substrate for Diapers Degradation by the Fungus Pleurotus ostreatus

Assessment of Gardening Wastes as a Co-Substrate for Diapers Degradation by the Fungus Pleurotus ostreatus

Utilisation of recycled thermoplastics sourced from rejected-unused disposable diapers as polymer blends

Sodium polyacrylate inhibits fermentative hydrogen production from waste diaper‐like material

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