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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Spent mushroom substrate is capable of physisorption-chemisorption of CO2

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Alves, Lucas da Silva [1] ; de Almeida Moreira, Bruno Rafael [2] ; Viana, Ronaldo da Silva [3] ; Dias, Eustaquio Souza [4] ; Rinker, Danny Lee [5] ; Pardo-Gimenez, Arturo [6] ; Zied, Diego Cunha [3]
Total Authors: 7
[1] Sdo Paulo State Univ Unesp, Sch Agr & Veterinarian Sci, Dept Appl Microbiol, Jaboticabal, SP - Brazil
[2] Sao Paulo State Univ Unesp, Sch Agr & Veterinarian Sci, Dept Engn & Exact Sci, Jaboticabal, SP - Brazil
[3] Sao Paulo State Univ Unesp, Coll Agr & Technol Sci, Dept Plant Prod, Dracena, SP - Brazil
[4] Univ Fed Lavras, Dept Biol, Lavras, MG - Brazil
[5] Univ Guelph, Vineland Campus, Vineland Stn, ON - Canada
[6] Ctr Invest Experimentac & Serv Champinon CIES, Quintanar Del Rey - Spain
Total Affiliations: 6
Document type: Journal article
Source: Environmental Research; v. 204, n. A MAR 2022.
Web of Science Citations: 0

No in-depth investigation exists on the feasibility of integrating hydrothermal carbonization (HTC) and pelletization into the process of making spent mushroom substrate (SMS), an agro-food residue from the commercial mushroom industry, into an adsorbent for post-combustion CO2 removal. Therefore, this study analyzed if it could be possible for systematically converting low-pressure hydrochars of various SMSs into carbon-adsorbing mini-capsules. Sources of SMS included paddy straw and achiote capsule shell from Pleurotus ostreatus; eucalyptus sawdust and grassy straw from Lentinula edodes; and compost containing peat or soil as casing layer from Agaricus subrufescens. The eucalyptus sawdust and grassy straw from L. edodes outperformed the other biomaterials in adsorbing CO2 , and thus effectively encapsuled most of the gas, 8.25 mmol g(-1) and 8.10 mmol g(-1) , respectively. They contained mostly hetero-atoms of O and N, requiring less unit energy to bind acidic molecules of CO2 at the alkaline sites. The amount of unit energy the pore-filling process demanded at 25 degrees C was 12.65 kJ mol(-1) , an attribute of self-sustaining and saleable physisorption. A negative 6.80 kJ mol(-1) free energy validated both spontaneity and exothermal of biocarbons at steady-state atmosphere. The major findings and innovations of our study support utilizing SMS as an adsorbent as a carbon capture, storage and utilization networking. Our insights into the physisorption-chemisorption on SMS are timely and relevant to help manage the re-use of SMS, and thus bring the global mushroom industry closer to environmental sustainability and toward a lower carbon society and circular economy. (AU)

FAPESP's process: 17/24234-1 - Energy efficiency of biomass from first-generation and second-generation bioethanol production with glycerin added during pellets production
Grantee:Ronaldo da Silva Viana
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 15/15306-3 - Techniques and processes in mushrooming: supplementation of compost and utilization of spent mushroom in the agriculture
Grantee:Diego Cunha Zied
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 19/19866-4 - New alternatives for sustainable integrated systems: agronomic and microbial aspects of maize after cultivation of sun mushroom in field
Grantee:Lucas da Silva Alves
Support Opportunities: Scholarships in Brazil - Master