Use of rice husk and sunflower stalk as a substitute for glass wool in thermal insulation of solar collector

Rosa, Luís Henrique Telles da; Santor, Cilione Gracieli; Lovato, Adalberto; Rosa, Cláudia Severo da; Güths, Saulo

doi:10.1016/j.jclepro.2015.04.127

Cited by 53 publications

(15 citation statements)

References 32 publications

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“…Growing awareness on the sustainable development of fiber industry has attracted more interests in extracting textile grade natural fibers from agricultural byproducts (Rosa et al, 2015;Hou et al, 2014a;Sapuan et al, 2014). In 2015, the global fiber consumption has reached 95.6 million tons, which hits a historical high (Lenzing company, 2016); however, the sustained growth of fiber production seems infeasible.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of cotton stalk bark fibers and their cotton blended yarns and fabrics

Dong

Hou

Haigler

et al. 2016

Journal of Cleaner Production

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Cotton stalk bark fibers (CSBF) with low lignin content were prepared from combined treatments with bacteria and alkali, processed into blended yarns and knitted fabrics, and dyed with reactive dyes. CSBF previously extracted using alkali and peroxide at atmospheric pressure were coarse (>45 dtex) or contained high lignin content (>11.8%), which limited their industrial applications in textiles. We found that alkali removed lignin more thoroughly at 130℃, especially with the assistance of bacteria pretreatment. Fibers after bacteria and alkali treatments had fineness reduced to 24.0 dtex and lignin content decreased to 3%. CSBF/cotton blended yarns from our CSBF had better evenness and breaking strength than jute/cotton blends. Fabrics from CSBF/cotton blended yarns had higher bursting strength, softer and smoother handle compared to the fabrics of jute/cotton blends. Dye sorption of Reactive Red 120 on CSBF was 15.7% higher than that on cotton. Dyed fabric of CSBF/cotton blends had the same laundering and light colorfastness, but slightly lower staining and wet crocking colorfastness than 100% cotton fabric. Overall, CSBF in our study could be used as a good alternative to traditional bast fibers for highly valuable textile applications. The research results will not only enhance the sustainability of fiber industry but also alleviate the environmental pressure.

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Section: Introductionmentioning

confidence: 99%

Preparation and properties of cotton stalk bark fibers and their cotton blended yarns and fabrics

Dong

Hou

Haigler

et al. 2016

Journal of Cleaner Production

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“…According to results and previous studies, the stalks can be used as feedstock for bioethanol production [18], for biogas production [19], and for biomaterials production [20]. Sunflower seed hulls can be employed by cofiring for energy production [21] or for obtaining bio-oil [22].…”

Section: By-products and Residues Characterizationmentioning

confidence: 99%

Experimental Study to Support Local Sunflower Oil Chains: Production of Cold Pressed Oil in Central Italy

et al. 2019

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Sunflower is one of the most important oilseed crops cultivated in the world for different purposes. In Italy, the production is mostly located in the central area, representing 70% of Italian production. The market demand for sunflower oil is higher than the national production. There is an increasing request for cold pressed sunflower oil for food application. The success of this activity is linked to a correct setting up and management of the production and supply chain with a valorization of products and by-products. To this aim, information is needed, and this paper is focused on the cultivation of sunflower in central Italy using suitable hybrids, as well as on the study of the cold extraction performance of the sunflower seed produced and the quality of by-products and residues. Results indicate that, on average, a range of about 1.0-1.5 t ha −1 of cold pressed oil and different amounts of by-products can be obtained. According to a proposed scenario, 30 ha cultivated with sunflower are needed to create a complete supply chain within the farm, avoiding many additional passages and maintaining all the value for the farmer. It is important to use suitable hybrids for obtaining good yield, but also the cold extraction performances are important because they also affect the quality of by-products and residues that can be valorized themselves to improve sustainability.

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“…O isolante térmico para ser considerado bom, deve possuir baixo coeficiente de condutividade térmica, ter boa resistência mecânica, baixa difusividade térmica, ser de fácil aplicação e baixo custo (CRUZ, FERREIRA e MARINHO, 2009). Os principais materiais isolantes usados no Brasil são: lã de vidro, lã de rocha e poliuretano (ROSA et al, 2015).…”

Section: Isolantes Térmicosunclassified

“…Diversas pesquisas apontam ser possível usar a casca de arroz, o sabugo de milho e uma série de outros materiais considerados resíduos, na formulação de compósitos para uso em revestimento interno de forros e paredes, na forma de painéis ou adicionados na camada de reboco para reduzir a transmissão de calor entre os ambientes, além de diversas outras finalidades. Além disso, são Página | 98 materiais totalmente renováveis, regionais e de baixo impacto ambiental (MENDES et al, 2010;KORJENIC et al, 2011;PANYAKAEW, S.;FOTIOS, S, 2011;ROSA et al, 2015).…”

Section: Introductionunclassified

Desempenho térmico de paredes de alvenaria protegidas com revestimento de compósitos de resíduos agrícolas

Rosa

Scherer

2018

R. Gest. Industr.

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O artigo teve por objetivo avaliar a utilização de resíduos agrícolas em compósitos, com fins de isolamento térmico para uso em sistemas de vedações verticais em edificações, identificando o atendimento às normas pertinentes para a região sul do Brasil. A pesquisa teve como ponto de partida a análise dos resultados obtidos em pesquisas onde foram avaliados o desempenho térmico de resíduos agrícolas, tendo como foco o aproveitamento da casca de arroz e do sabugo de milho. Foi simulada uma parede de alvenaria em blocos vazados de concreto simples e de cerâmica, rebocada em ambas as faces com argamassa comum, considerando-se também o uso de uma camada de compósito sob a argamassa em uma das faces da parede. Os diferentes sistemas foram avaliados e comparados por meio dos valores de transmitância térmica e fator de ganho de calor solar. Os resultados obtidos comprovam a melhoria do desempenho das paredes com o uso dos compósitos considerados.

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Use of rice husk and sunflower stalk as a substitute for glass wool in thermal insulation of solar collector

Cited by 53 publications

References 32 publications

Preparation and properties of cotton stalk bark fibers and their cotton blended yarns and fabrics

Preparation and properties of cotton stalk bark fibers and their cotton blended yarns and fabrics

Experimental Study to Support Local Sunflower Oil Chains: Production of Cold Pressed Oil in Central Italy

Desempenho térmico de paredes de alvenaria protegidas com revestimento de compósitos de resíduos agrícolas

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