Results 51 to 60 of about 172,474 (356)

Biomass-Derived Carbons as Friction Reducing Additives for Lubricants: Tribological Properties of Biochars and Activated Carbons Obtained from Sugar Cane Bagasse

open access: yesLubricants
Activated carbons are commonly used for adsorption/depollution applications, but only a few studies are related to their lubricating properties. In order to investigate a new family of friction reducers, the tribological properties of biochars and ...
Audrey Molza   +6 more
doaj   +1 more source

Preparation of Activated Carbons from Biomass and Their Adsorption of Benzene, Ammonia, Direct Red 23 and Iron Ions

open access: yesAdsorption Science & Technology, 2008
Three activated carbons were prepared from biomass (agriculture and wood industry by-products) and subsequently modified by treatment with liquefied petroleum gas at 900°C.
Bo Meng, Wenzhong Shen, Qingjie Guo
doaj   +1 more source

Activated carbons from Mongolian coals by thermal treatment

open access: yesMongolian Journal of Chemistry, 2014
Mongolian different rank coals were used as raw material to prepare activatedcarbons by physical activation method. The coal derived carbons were oxidized with nitric acid in order to introduce surface oxygen groups.
A Ariunaa   +3 more
doaj   +1 more source

Methanol dehydration over ZrO2 supported-activated carbons [PDF]

open access: yes, 2016
Resumen comunicación congreso internacionalDME is playing an important role due to its potential use as an alternative fuel in diesel engines. The use of this fuel produces lower NOx emissions, and less engine noise compared to traditional diesel fuels ...
Cordero, Tomás   +3 more
core  

Comparative adsorption of levodopa from aqueous solution on different activated carbons [PDF]

open access: yes, 2009
Adsorption on activated carbon has been successfully used in wastewater and drinking water treatment plants for the removal of various pollutants. Among them, pharmaceutical compounds have become a growing issue. The present study has focused on levodopa
Delmas, Henri   +4 more
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Preparation and characterization of powdered and granular activated carbon from Palmae biomass for mercury removal

open access: yesApplied Water Science, 2021
Two forms of activated carbon (i.e., granular and powdered forms) used to test mercury removal in solution. These activated carbons were obtained from the shells of a palmae biomass and used in mercury ion removal in aquatic systems.
Davidson Egirani   +4 more
doaj   +1 more source

Activated carbons functionalized with thiol and sulfonic acid groups for catalytic wet peroxide oxidation [PDF]

open access: yes, 2010
Activated carbons are known catalysts for hydrogen peroxide decomposition through a pathway involving the formation of hydroxyl radicals. Thus, it seems logical to take advantage of the strong oxidizing properties of these radicals for the degradation ...
Faria, Joaquim   +4 more
core  

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Reclamation of plant wastes (straw) and obtaining (nano) chips with bactericidal properties based on them [PDF]

open access: yes, 2015
Rape, camelina, wheat and Jerusalem artichoke vegetable wastes (straw) as annually renewable raw materials were processed into activated carbons, which were modified with silver nanoparticles for carbonaceous sorbents to acquire specific properties ...
Busev, Sergey Alekseevich   +4 more
core  

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