Effect of ground wood particle size on biomass fractionation using p-toluenesulfonic acid treatment

Native corn starches were acid-treated at 53 °C for hours in HCl aqueous solution. The peak temperature (Tp) and heat of gelatinization (ΔHgel) before and after treatments were determined. The average particle size, TG and viscosity were measured. The results showed that the viscosity of corn starch decreased from 630mPa to 4.6mPa after acid treatment for 6h. The average particle size decreased and ΔHgel decreased obviously after acid modification.

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Fabrication and Characterization of Particle Board from Coffee Husk Waste

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.891.111 ◽

2019 ◽

Vol 891 ◽

pp. 111-116 ◽

Cited By ~ 1

Author(s):

Nisakorn Nuamsrinuan ◽

Patcharin Naemchanthara ◽

Pichet Limsuwan ◽

Kittisakchai Naemchanthara

Keyword(s):

Mechanical Properties ◽

Particle Size ◽

Wood Particle ◽

Milling Process ◽

Particle Board ◽

Weight Percentage ◽

Coffee Husk ◽

Mechanical Properties Testing ◽

Fabrication And Characterization

The purpose of this research was to fabricate the particle board from the coffee husk. The coffee husk from Chumphon province of Thailand was collected, prepared and separated into four groups such as outer husk, inner husk, the mixture of inner and outer husk and husk from the milling process. The coffee husk particle sheet was formed by the compression molding with the heater. Then the coffee husk particle sheets were the mechanical properties testing. The results showed the coffee husk particle sheet from milling process pass the Thai industrial standard (TIS.876/2547). However, the results of swelling and water absorption indicated that all the coffee husk sheet were not passed the TIS.876/2547. The effect of coffee husk particle size on mechanical properties was clarified. The coffee husk particle sheet from the particle size of 2, 4 and 6 mm was mechanical testing and follow TIS.876/2547. The coffee particle size of 2 mm showed the passing the standard. Moreover, the effect of isocyanate adhesive on mechanical properties was investigated. The weight percentage range of isocyanate adhesive on coffee husk from 7 to 13 %wt was carried out. The weight percentage of 9, 11 and 13 showed according to TIS.876/2547. From the experiment indicated that the coffee husk could be applied to the wood particle board industrial.

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Crystallinity and mesoporosity of carbon produced from ligno-p-cresol and their improvement by pulverization and acid treatment

Holzforschung ◽

10.1515/hf.2008.023 ◽

2008 ◽

Vol 62 (2) ◽

pp. 157-163 ◽

Cited By ~ 4

Author(s):

Kyoko Suzuki ◽

Tsutomu Suzuki ◽

Naohiro Takazawa ◽

Masamitsu Funaoka

Keyword(s):

Particle Size ◽

Phase Separation ◽

Sulfuric Acid ◽

Liquid Phase ◽

Adsorption Capacity ◽

Manufacturing Process ◽

Mesoporous Carbon ◽

Acid Treatment ◽

Wet Milling ◽

Liquid Phase Adsorption

AbstractCrystallized mesoporous carbon was produced from ligno-p-cresol, a lignin derivative obtained by phase separation withp-cresol and sulfuric acid, onto which 3% nickel and 2% calcium were co-loaded, by carbonization at 900°C. Subsequent pulverization followed by soaking in acid improved the crystallinity of carbon with an increased volume of mesopore, attaining approximately 90% and 99% removal of nickel and calcium, respectively. These aspects implied both enhancement of electroconductivity and liquid phase adsorption capacity of the carbon with a good outlook on the recovery and reuse of the two metals. In particular, combination of wet milling using small beads and mild soaking with diluted acid was appropriate in respect of relevant properties of the carbon, including the particle size. It can thus be concluded that incorporation of such post-treatments into the manufacturing process of carbon products is greatly advantageous.

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(S)-( - )-Proline Catalysed Alkylation of 1,3-Dihydroxyanthraquinone with Phenylacetaldehyde

Australian Journal of Chemistry ◽

10.1071/ch9792681 ◽

1979 ◽

Vol 32 (12) ◽

pp. 2681 ◽

Cited By ~ 1

Author(s):

A Castonguay ◽

Y Berger

Keyword(s):

Mass Spectrometry ◽

Amino Acid ◽

High Resolution ◽

Manganese Dioxide ◽

Acid Treatment ◽

Chromic Acid ◽

Enol Ether ◽

Substitution Product ◽

Toluenesulfonic Acid ◽

Mass Spectrometry Fragmentation

In the presence of the amino acid (S)-(-)-proline, 1,3-dihydroxyanthraquinone (1) is alkylated by phenylacetaldehyde to give an anomeric mixture of lactols (2). The lactols are oxidized to the corresponding lactone (3) by manganese dioxide or chromic acid. Treatment of (2) with p-toluenesulfonic acid yields the expected enol ether (4) along with the substitution product (5). Mass spectrometry fragmentation, high-resolution 1H N.M.R. and 13C n.m.r, studies of these compounds are discussed.

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