Abstract:The current research is focused on the mutual comparison (mechanical properties, response to humidity) of agro-waste composite materials. The purpose of this work is directed at the valorization of agro-waste biomass products and to investigate their mechanical stability for transport or other applications (in dry and wet states). Three different types of agro-waste (oat hull (Oh), torrefied wheat straw (S), and spent coffee grounds (SCG)) were blended with kaolinite (K) and chitosan (CHT) at variable weight r… Show more
“…2 in ref. 21 for a comparable pellet system 21 ). However, the TWCs can undergo solvent swelling and expansion in aqueous media because of the presence of pores and the polar surface groups due to chitosan.…”
Section: Resultsmentioning
confidence: 99%
“…32,33 The utility of eggshells as additives for P i capture and release media has been reported for ES in calcined forms. 34 This research aims to expand the development of sustainable adsorbents for orthophosphate capture and release through the design of composites that require lower energy and less demanding synthesis via physical compositing of renewable feedstocks 11,21,22 to afford enhanced P i capture.…”
Section: Introductionmentioning
confidence: 99%
“…In turn, torrefaction of biomass affords improved properties such as handling, processing, and environmental stability. 11,17–23…”
In this study, a ternary granular composite comprised of torrefied wheat straw (TWS), egg shells (ES), and chitosan (Chi) were combined in variable weight ratios. The ternary composites (TWS+ES+Chi) with...
“…2 in ref. 21 for a comparable pellet system 21 ). However, the TWCs can undergo solvent swelling and expansion in aqueous media because of the presence of pores and the polar surface groups due to chitosan.…”
Section: Resultsmentioning
confidence: 99%
“…32,33 The utility of eggshells as additives for P i capture and release media has been reported for ES in calcined forms. 34 This research aims to expand the development of sustainable adsorbents for orthophosphate capture and release through the design of composites that require lower energy and less demanding synthesis via physical compositing of renewable feedstocks 11,21,22 to afford enhanced P i capture.…”
Section: Introductionmentioning
confidence: 99%
“…In turn, torrefaction of biomass affords improved properties such as handling, processing, and environmental stability. 11,17–23…”
In this study, a ternary granular composite comprised of torrefied wheat straw (TWS), egg shells (ES), and chitosan (Chi) were combined in variable weight ratios. The ternary composites (TWS+ES+Chi) with...
“…21,22 Biomass composites derived from spent coffee grounds or torreed wheat straw have favourable stability in aqueous media, especially under acidic conditions versus non-torreed biomass such as oat hulls. 20,23 As well, composites with greater oat hull content, especially above 40-60% display limited mechanical stability, as evidenced by crumbling in the dry state. Hardness of such composites in the dry state was measured around 20-30 N for non-crosslinked and ca.…”
Section: Introductionmentioning
confidence: 99%
“…Furthermore, these composites show susceptibility to breakdown in aqueous media with low salinity or slight acidity as outlined in previous research. 19,23 In turn, surface modication is required to reach acceptable mechanical strength and continued resilience in aqueous media for remediation applications in dynamic environments. For the case of aqueous media in many river systems, pH conditions reside near 7-8, where anion adsorption by chitosan can become attenuated or negligible.…”
In this study, a granular composite comprised of 50% oat hulls (Oh), 10% kaolinite (K), and 40% modified chitosan (Ch) was cross-linked with epichlorohydrin (ECH) and subsequently grafted with pyridinium....
The preparation of ternary biocomposite carriers for ammonium sulfate that contain chitosan, torrefied wheat straw and avian eggshells is described. We demonstrate the promising potential of such carriers as slow-release fertilizer systems.
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