Effect of microwave–chemical pre-treatment on compression characteristics of biomass grinds

Kashaninejad, Mahdi; Tabil, Lope G.

doi:10.1016/j.biosystemseng.2010.10.008

Cited by 64 publications

(58 citation statements)

References 23 publications

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“…or above 12 % (w.b.) would lead to lower-quality pellets or briquettes in terms of density and durability [11,16,[36][37][38][39]. In general, an increase in feedstock moisture content to >15 % could result in a decrease in pellet or briquette densities [10,35,[40][41][42][43].…”

Section: Discussionmentioning

confidence: 99%

Impact of process conditions on the density and durability of wheat, oat, canola, and barley straw briquettes

et al. 2014

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The present study is to understand the impact of process conditions on the quality attributes of wheat oat, barley, and canola straw briquettes. Analysis of variance indicated that briquette moisture content and initial density immediately after compaction and final density after 2 weeks of storage are strong functions of feedstock moisture content and compression pressure, whereas durability rating is influenced by die temperature and feedstock moisture content. Briquettes produced at a low feedstock moisture content of 9 % (w.b.) yielded maximum densities >700 kg/m 3 for wheat, oat, canola, and barley straws. Lower feedstock moisture content of <10 % (w.b.) and higher die temperatures >110°C and compression pressure >10 MPa minimized the briquette moisture content and maximized densities and durability rating based on surface plots observations. Optimal process conditions indicated that a low feedstock moisture content of about 9 % (w.b.), high die temperature of 120-130°C, medium-to-large hammer mill screen sizes of about 24 to 31.75 mm, and low to high compression pressures of 7.5 to 12.5 MPa minimized briquette moisture content to <8 % (w.b.) and maximized density to >700 kg/m 3 . Durability rating >90 % is achievable at higher die temperatures of >123°C, lower to medium feedstock moisture contents of 9 to 12 % (w.b.), low to high compression pressures of 7.5 to 12.5 MPa, and large hammer mill screen size of 31.75 mm, except for canola where a lower compression pressure of 7.5 to 8.5 MPa and a smaller hammer mill screen size of 19 mm for oat maximized the durability rating values.

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Section: Discussionmentioning

confidence: 99%

Impact of process conditions on the density and durability of wheat, oat, canola, and barley straw briquettes

et al. 2014

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“…Alkaline pretreatment is believed to cause swelling of the lignocellulosic structure, leading to an increase in internal surface area, separation of structural linkage between lignin and carbohydrates, and the disruption of lignin structure (Ong et al 2010;Kashaninejad and Tabil 2011). As described in the literature, microwave treatment produces a rapid volumetric heating throughout the material, resulting in alteration of physio-chemical characteristics of the material, which enables and accelerates the breaking down of the lignin-hemicellulose complex and increases the exposure of cellulose surface to cellulase (Ma et al 2009;Jackowiak et al 2011).…”

Section: Resultsmentioning

confidence: 99%

Comparison of Pretreatment Strategies for Conversion of Coconut Husk Fiber to Fermentable Sugars

Ding¹,

Hii²,

Ong³

2012

BioResources

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In the present study, coconut husk was employed as biomass feedstock for production of bioethanol, due to its abundance in Malaysia. Due to the complex structures of coconut husk, a pretreatment process is crucial in extracting fermentable sugars from the embedded cellulose matrix for subsequent ethanol fermentation process. The ground coconut husk was subjected to three different pretreatment processes inclusive of thermal, chemical, and microwave-assisted-alkaline techniques, prior to enzymatic hydrolysis and fermentation process. The composition profile of coconut husk was significantly altered upon the microwave-assistedalkaline treatment as compared to the untreated sample, with the cellulose content increasing from 18-21% to 38-39% while lignin content decreased from 46-53% to 31-33%. Among the pretreatment methods applied, enzymatic hydrolysis of coconut husk pretreated by microwaveassisted-alkaline method recorded the highest yield of fermentable sugars, 0.279 g sugar/g substrate. SEM imaging showed the obvious and significant disruption of coconut husks' structure after microwaveassisted-alkaline pretreatment. In conclusion, by employing suitable pretreatment technique in treating the lignocellulosic materials of coconut husk, the extracted fermentable sugar is a potential substrate for bioethanol production.

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“…[92], antepfıstığının düzenli tüketiminin sadece glisemik ve lipit parametrelerini iyileştirmekle kalmayıp aynı zamanda damar sertliği ve endotel fonksiyonunda da iyileşmelere sebep olduğunu tespit etmişlerdir. Antepfıstığındaki fitosterollerin prostat kanserinin gelişimini önlediği yapılan çalışmalarda bulunmuştur [93]. Ayrıca esansiyel özelliğe sahip olan fitosterollerin, kolesterolün bağırsaktaki emilimini engelleyerek kandaki LDL kolesterol ve toplam kolesterol seviyelerini azaltıcı etkinin sağlanabilmesi amacıyla diyetle günlük 1 g alınması gerektiği belirtilmiştir [94].…”

Section: İnsan Sağliği Açisindan Antepfistiğinin öNemi̇unclassified

Antepfıstığı (Pistacia vera L.) ve İnsan Sağlığı Üzerine Etkileri

Çağlar¹,

Tomar²,

Vatansever³

et al. 2017

Akademik Gıda

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Pistachio (Pistacia vera L.) and Its Effects on Human HealthABSTRACT Turkey, especially Southeastern Anatolian Region, has an important place in the world ranking as well as an economic value in terms of pistachio production. Pistachios, which are from nuts with hard shells, have positive effects on health. Pistachios have rich nutritional content in terms of protein, fat and fatty acids, fiber, vitamins and minerals. As a rich source of phenolic compounds, pistachios take attention with a high antioxidant activity. Various researchers have reported that pistachio consumption may have beneficial effects on hypertension, cancer, diabetes and cardiovascular diseases. In this present study, the place and the importance of pistachios in human nutrition and health are reviewed.

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Effect of microwave–chemical pre-treatment on compression characteristics of biomass grinds

Cited by 64 publications

References 23 publications

Impact of process conditions on the density and durability of wheat, oat, canola, and barley straw briquettes

Impact of process conditions on the density and durability of wheat, oat, canola, and barley straw briquettes

Comparison of Pretreatment Strategies for Conversion of Coconut Husk Fiber to Fermentable Sugars

Antepfıstığı (Pistacia vera L.) ve İnsan Sağlığı Üzerine Etkileri

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