Characterization of biochars obtained from various biomaterials

Cooper, N; Link, S; Arvelakis, S; Kulaots, I

dc.contributor.author	Cooper, N	en
dc.contributor.author	Link, S	en
dc.contributor.author	Arvelakis, S	en
dc.contributor.author	Kulaots, I	en
dc.date.accessioned	2014-03-01T02:52:55Z
dc.date.available	2014-03-01T02:52:55Z
dc.date.issued	2011	en
dc.identifier.issn	00657727	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36146
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-80051890364&partnerID=40&md5=36b244fc42fbbc40cbdde1feec6cc5bf	en
dc.title	Characterization of biochars obtained from various biomaterials	en
heal.type	conferenceItem	en
heal.publicationDate	2011	en
heal.abstract	Biomaterials have been attractive candidates for power generation for at least last decade. Utilizing agricultural biomasses, such as wheat straw or coastal reed for energy generation, can reduce worldwide CO emissions from fossil fuel combustion systems, while simultaneously utilizing a waste stream. In addition, bio-chars originating from the wood products are reported to be excellent sorbent materials. Various bio-chars samples were characterized by CO 2 and N2 adsorption techniques. The N2 BET surface area of the wheat straw sample was found to be in the range of 25 m2/g, however the CO2 adsorption BET surface area of the same material was determined to be as high as 348 m2/g. The DFT analysis of the CO2 isotherm confirms that this increased accessibility of CO2 molecule to the char pore structure is due the wide network of micropores present in char. The enhanced surface area obtained from the CO2 adsorption isotherm is attributed to the presence of super micropores (pores less than 8 Ångstrom) present in the wheat straw char sample. When investigating the adsorption characteristics of the materials with clearly microporous nature both CO2 and N2 techniques should be applied.	en
heal.journalName	ACS National Meeting Book of Abstracts	en