Oak sawdust and hazelnut shells as fillers for a polyester thermoset

1999 ◽  
Vol 57 (5) ◽  
pp. 325-330 ◽  
Author(s):  
M. I. Aranguren ◽  
M. M. Reboredo ◽  
G. Demma ◽  
J. Kenny
Keyword(s):  
Polyester Thermoset ◽  
Hazelnut Shells

Effect of pyrolysis temperature on volatile products from hazelnut shells: products characteristics and antioxidant activity assessment of liquid products

2021 ◽  
Vol 19 (4) ◽  
pp. 383-391
Author(s):  
Chenxi Zhao ◽  
Yupeng Xing ◽  
Wei Lv ◽  
Juhui Chen ◽  
Xiaogang Liu ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Composition Analysis ◽  
Maximum Output ◽  
Activity Assessment ◽  
Volatile Products ◽  
Liquid Products ◽  
Fuels And Chemicals ◽  
Gas Products ◽  
Combustible Gases ◽  
Hazelnut Shells

Abstract It is being considered to pyrolyze lignin-rich biomass samples (hazelnut shells, HSs) into bio-fuels and chemicals to solve energy shortages and environmental concerns, volatile products (including liquid products and gas products) were produced and characterized from HSs pyrolysis at 400–1000 °C. With the temperature increases, the maximum output of liquid products was up to 35.79% produced at 700 °C, gas products yields increased from 21.82 to 55.46%. Gas chromatography and mass spectrometry (GC–MS) study indicated that liquid products from HSs riched in phenolic compounds, exceed 42% of liquid products and increased as the temperature rises. The application experiment showed that HSs liquid products had a significant role in antioxidant activity, and revealed that not limited to phenols, all compounds containing phenolic hydroxyl structure act as antioxidant. Composition analysis of gas products showed that more combustible gases were produced at the higher temperature, resulted in the significant increase in gas products higher heating value (HHV) from 6.21 to 24.36 MJ/kg.

scholarly journals NANOFIBER PRODUCTION FROM LIQUEFIED HAZELNUT SHELL WITH THE ADDITION OF REDUCED GRAPHENE OXIDE AND POLYVINYL PYRROLIDONE

2020 ◽  
Vol 54 (9-10) ◽  
pp. 953-965
Author(s):  
ÖMER ÖNAL ◽  
MUSTAFA YAZICI ◽  
ISMAIL TIYEK ◽  
KONUS OGUZHAN ◽  
MEHMET HAKKI ALMA ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Lignocellulosic Biomass ◽  
Polyvinyl Pyrrolidone ◽  
Hummers Method ◽  
Reduced Graphene ◽  
Electrospinning Method ◽  
Hazelnut Shell ◽  
Hazelnut Shells

In this study, in order to produce nanofibers from waste hazelnut shells, a lignocellulosic biomass, firstly, liquefied hazelnut shell (LHS) was obtained by liquefaction of waste hazelnut shells using phenol and some chemicals. Then, reduced graphene oxide (RGO) was produced by Hummers’ method. RGO and polyvinyl pyrrolidone (PVP) were added to LHS, in certain proportions, to form seven different LHS-RGO-PVP solutions with ethanol/dimethylformamide (EtOH/DMF). From these solutions, nanofiber surfaces were obtained by a semi-industrial electrospinning device. The morphology of the nanofibers and the properties of the electrospinning solution were investigated, and it was observed that the optimum nanofibers were obtained from 7.5% LHS/10% PVP/5.6% RGO solution by the electrospinning method. It has been determined that the conductivity is slightly reduced by the addition of RGO to the solution, the viscosity is greatly reduced, the nanofiber diameters are reduced by approximately half, and thinner nanofibers are obtained

scholarly journals Activated carbons prepared from hazelnut shells, walnut shells and peanut shells for high CO2 adsorption

2017 ◽  
Vol 19 (2) ◽  
pp. 38-43 ◽  
Author(s):  
Katarzyna Lewicka
Keyword(s):  
Surface Area ◽  
Co2 Adsorption ◽  
Activated Carbons ◽  
Dft Method ◽  
Adsorption Method ◽  
Walnut Shells ◽  
Peanut Shells ◽  
Activating Agent ◽  
Hazelnut Shells ◽  
Bet Equation

Abstract Research treats about producing activated carbons for CO2 capture from hazelnut shells (HN), walnut shells (WN) and peanut shells (PN). Saturated solution of KOH was used as an activating agent in ratio 1:1. Samples were carbonized in the furnace in the range of temperatures 600°C–900°C. Properties of carbons were tested by N2 adsorption method, using BET equation, DFT method and volumetric CO2 adsorption method. With the increase of carbonization temperature specific surface area of studied samples increased. The largest surface area was calculated for samples carbonized at 900°C and the highest values of CO2 adsorption had samples: PN900 at 0°C (5.5 mmol/g) and WN900 at 25°C (4.34 mmol/g). All of the samples had a well-developed microporous structure.

Kinetic study of hemicellulosic sugar production from hazelnut shells

2012 ◽  
Vol 185-186 ◽  
pp. 23-28 ◽  
Author(s):  
Yeşim Arslan ◽  
Serpil Takaç ◽  
Nurdan Eken-Saraçoğlu
Keyword(s):  
Kinetic Study ◽  
Sugar Production ◽  
Hazelnut Shells

Effects of fragmentation and particle size on the fuel properties of hazelnut shells

Fuel ◽  
2013 ◽  
Vol 112 ◽  
pp. 326-330 ◽  
Author(s):  
H. Haykiri-Acma ◽  
A. Baykan ◽  
S. Yaman ◽  
S. Kucukbayrak
Keyword(s):  
Particle Size ◽  
Fuel Properties ◽  
Hazelnut Shells

Bioconversion of Alkali Pretreated Hazelnut Shells to Fermentable Sugars for Generation of High Value Products

2016 ◽  
Vol 8 (2) ◽  
pp. 407-416 ◽  
Author(s):  
Sibel Uzuner ◽  
Ratna Rani Sharma Shivappa ◽  
Deniz Cekmecelioglu
Keyword(s):  
Fermentable Sugars ◽  
Hazelnut Shells

scholarly journals Determination of Effectiveness Absorption of The Rice Husk And Hazelnut Shell to Purification Used Cooking Oil

2019 ◽  
Vol 12 (1) ◽  
pp. 19
Author(s):  
Loth Botahala ◽  
Yanti Malailak ◽  
Herlin Silvia Maure ◽  
Hagar Karlani
Keyword(s):  
Rice Husk ◽  
Activated Charcoal ◽  
Absorption Capacity ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
Hazelnut Shell ◽  
Hazelnut Shells ◽  
Better Than

The effectiveness of the absorption of activated rice husk and hazelnut shells on the purification of used cooking oil has been carried out. The aim is to determine the absorption capacity of the active charcoal of rice husk and hazelnut shells to purify used cooking oil. After being physically activated, activated charcoal from rice husk and pecan shells is applied to the purification of used cooking oil. The results show that the quality of hazelnut shell charcoal is better than rice husk after it is applied to purifying used cooking oil.

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