Spent mushroom compost (SMC) as a source for biogas production in Iran

Najafi, Bahman; Ardabili, Sina Faizollahzadeh; Shamshirband, Shahaboddin; Chau, Kwok-wing

doi:10.1080/19942060.2019.1658644

Cited by 23 publications

(14 citation statements)

References 54 publications

(50 reference statements)

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“…Meanwhile, Najafi et al . [ 68 ] recorded that one period of SMS production releases biogas energy equal to 277.95 kW.h/ton at 35°C and 322.84 kW.h/ton at 55°C.…”

Section: Resultsmentioning

confidence: 99%

“…Nowadays, dried SMS is sold for more than 10 RMB Yuan/50 kg at Sanzhi District for biogas production [67]. Meanwhile, Najafi et al [68] recorded that one period of SMS production releases biogas energy equal to 277.95 kW.h/ton at 35°C and 322.84 kW.h/ton at 55°C. Thus, both SMS and POME are suitable resources for producing value-added products.…”

Section: Batch Biohydrogen Productionmentioning

confidence: 99%

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Upcycling the Spent Mushroom Substrate of the Grey Oyster Mushroom Pleurotus pulmonarius as a Source of Lignocellulolytic Enzymes for Palm Oil Mill Effluent Hydrolysis

Yunan

Shin

Sabaratnam

2021

J. Microbiol. Biotechnol.

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Mushroom cultivation along with the palm oil industry in Malaysia have contributed to large volumes of accumulated lignocellulosic residues that cause serious environmental pollution when these agroresidues are burned. In this study, we illustrated the utilization of lignocellulolytic enzymes from the spent mushroom substrate of Pleurotus pulmonarius for the hydrolysis of palm oil mill effluent (POME). The hydrolysate was used for the production of biohydrogen gas and enzyme assays were carried out to determine the productivities/activities of lignin peroxidase, laccase, xylanase, endoglucanase and β-glucosidase in spent mushroom substrate. Further, the enzyme cocktails were concentrated for the hydrolysis of POME. Central composite design of response surface methodology was performed to examine the effects of enzyme loading, incubation time and pH on the reducing sugar yield. Productivities of the enzymes for xylanase, laccase, endoglucanase, lignin peroxidase and β-glucosidase were 2.3, 4.1, 14.6, 214.1, and 915.4 U g -1 , respectively. A maximum of 3.75 g/l of reducing sugar was obtained under optimized conditions of 15 h incubation time with 10% enzyme loading (v/v) at a pH of 4.8, which was consistent with the predicted reducing sugar concentration (3.76 g/l). The biohydrogen cumulative volume (302.78 ml H 2 .L -1 POME) and 83.52% biohydrogen gas were recorded using batch fermentation which indicated that the enzymes of spent mushroom substrate can be utilized for hydrolysis of POME.

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“…Meanwhile, Najafi et al . [ 68 ] recorded that one period of SMS production releases biogas energy equal to 277.95 kW.h/ton at 35°C and 322.84 kW.h/ton at 55°C.…”

Section: Resultsmentioning

confidence: 99%

Section: Batch Biohydrogen Productionmentioning

confidence: 99%

Upcycling the Spent Mushroom Substrate of the Grey Oyster Mushroom Pleurotus pulmonarius as a Source of Lignocellulolytic Enzymes for Palm Oil Mill Effluent Hydrolysis

Yunan

Shin

Sabaratnam

2021

J. Microbiol. Biotechnol.

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“…According to recent studies, the mushroom industries generated around 50 million tonnes of SMS fiber per year, while the oil palm sector generated approximately 51.19 million tonnes of EFB fiber per year globally [5,6]. A massive stockpile of SMS fiber has been declared environmentally hazardous after it was discovered to be a new breeding ground for flies and a source of foul odors [7]. These environmentally hazardous actions have resulted in environmental pollution such as contamination of water sources, air pollution, and eutrophication [8,9].…”

Section: Introductionmentioning

confidence: 99%

Sandwich Composite Panel from Spent Mushroom Substrate Fiber and Empty Fruit Bunch Fiber for Potential Green Thermal Insulation

et al. 2023

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Massive generation of natural waste fiber from agricultural industries followed by improper disposal management might result in a detrimental effect on our ecosystem contributing to various types of environmental pollution. With the growing significance of climate change, an effort is being undertaken by utilizing natural waste fiber into eco-friendly insulation panels to reduce the environmental impact of buildings. In this research, a composite panel was developed from spent mushroom substrate (SMS) and empty fruit bunch (EFB) fibers via a sandwich technique. Five samples were made, each with a different fiber ratio (100 SMS: 0 EFB, 80 SMS: 20 EFB, 60 SMS: 40 EFB, 40 SMS: 60 EFB, and 0 SMS: 100 EFB) at density 0.8 g/cm3. Fourier transformation infrared (FTIR) Soxhlet extraction followed by thermogravimetric analysis (TGA) indicated that the SMS and EFB fibers were relevant for fabrication into a composite panel for thermal insulation. Thermal conductivity, thermal resistance, and thermal diffusivity values for these five composite samples were 0.231 to 0.31 W/(mK), 0.0194 to 0.0260 m2K/W, and 0.2665 to 0.3855 mm2/s, respectively. The flexural strength of the composite was at the range 15.61 to 23.62 MPa. These research findings suggest that the fabrication of a sandwich composite panel from SMS and EFB fiber is a promising alternative way to utilize natural waste fiber.

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“…5 Many valuable byproducts, including phenolic substances, sugar polymers and proteins are available in SMS, which are ubiquitous, economical and renewable sources. 6 It is indeed crucial to remember that SMS structure and composition vary significantly according to the area, mushroom species and other mushroom cultivation aspects.…”

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confidence: 99%

Recent advances on environmentally sustainable valorization of spent mushroom substrate: A review

Kousar,

Khan,

Farid

et al. 2024

Biofuels Bioprod Bioref

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Commercial cultivation of edible mushrooms utilizes a large amount of lignocellulosic material as a substrate. After harvest, the leftover substrate, referred to as a spent mushroom substrate (SMS), largely remains biochemically unaltered. In light of the global rise in the number of edible mushroom production facilities, it is pertinent to sustainably manage the by‐products of the mushroom production process, particularly SMS. Following the principles of the circular economy, SMS has shown potential for a variety of applications: SMS can be used as substrate for a new cycle of mushroom cultivation or as animal feed, fertilizer, soil amendment, bioremediation agent or a substrate for renewable energy production such as biogas, bioethanol, biohydrogen, solid biofuel, bio‐crude and bio‐oil. This article summarizes the current state of knowledge in various applications, highlights recent developments in the field, discusses potential barriers and offers suggestions for the long‐term growth of the mushroom industry worldwide.

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Spent mushroom compost (SMC) as a source for biogas production in Iran

Cited by 23 publications

References 54 publications

Upcycling the Spent Mushroom Substrate of the Grey Oyster Mushroom Pleurotus pulmonarius as a Source of Lignocellulolytic Enzymes for Palm Oil Mill Effluent Hydrolysis

Upcycling the Spent Mushroom Substrate of the Grey Oyster Mushroom Pleurotus pulmonarius as a Source of Lignocellulolytic Enzymes for Palm Oil Mill Effluent Hydrolysis

Sandwich Composite Panel from Spent Mushroom Substrate Fiber and Empty Fruit Bunch Fiber for Potential Green Thermal Insulation

Recent advances on environmentally sustainable valorization of spent mushroom substrate: A review

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