Utilization of waste straw and husks from rice production: A review

Goodman, B. A.

doi:10.1016/j.jobab.2020.07.001

Cited by 292 publications

(133 citation statements)

References 240 publications

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“…Moreover, straw can be used to generate energy through the production of bioethanol, biogas and bio-oil, as well as by direct combustion. It is also known for containing natural, environmental absorbents for pollution control as well as construction materials [ 23 , 24 , 25 ]. The methods of straw management are characterized by certain limitations, hence, there is still a need to develop new methods and technologies for its use.…”

Section: Introductionmentioning

confidence: 99%

Straw/Nano-Additive Hybrids as Functional Fillers for Natural Rubber Biocomposites

2021

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Currently, up to 215 million metric tons of harvestable straw are available in Europe, 50% of the crops come from wheat, 25% from barley and 25% from maize. More than half of the production remains undeveloped. The overproduction of straw in the world means that the current methods of its management are insufficient. The article describes the production method and characterization of natural rubber biocomposites containing cereal straw powder modified with functional nano-additives in the form of carbon black, silica and halloysite nanotubes. The use of cereal straw in the elastomer matrix should contribute to obtaining a product with good mechanical properties while ensuring a low cost of the composite. In turn, the application of the mechanical modification process will allow the combination of specific properties of raw materials to obtain new, advanced elastomeric materials. As part of the work, hybrid fillers based on mechanically modified cereal straw were produced. The impact of hybrid fillers on mechanical, rheometric and damping properties was assessed. The flammability and susceptibility of the obtained biocomposites to aging processes were determined. The use of hybrid fillers based on mechanically modified straw allowed us to obtain a higher cross-linking density of vulcanizates (even up to 40% compared to the reference sample), and thus higher values of the rheometric moment during the vulcanization process of rubber mixtures (from approx. 10% (10 phr of filler) up to 50% (30 phr of filler) in relation to the unfilled system) and higher hardness of vulcanizates (by about 30–70%). The curing time of the blends was slightly longer, but the obtained composites were characterized by significantly higher tensile strength. The use of fillers in the elastomer matrix increased the modulus at 100, 200 and 300% and the elongation at break. Moreover, greater resistance of vulcanizates to the combustion process was confirmed.

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Section: Introductionmentioning

confidence: 99%

Straw/Nano-Additive Hybrids as Functional Fillers for Natural Rubber Biocomposites

2021

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“…Hiện nay, vật liệu phế phẩm từ ngành nông nghiệp được ứng dụng rộng rãi trong thực tiễn như sử dụng làm chất đốt, phân bón, vật liệu xử lý nước thải, sản xuất điện... [1][2][3]. Trong đó, vỏ trấu được ứng dụng trong rất nhiều lĩnh vực như: chế tạo làm củi trấu, trấu viên dùng cho các lò hơi công nghiệp thay cho than đá hoặc lò gas có công suất lớn tại các khu công nghiệp [4][5][6]. Ở Việt nam, nhiều nhà sản xuất đã sử dụng vỏ trấu để làm củi trấu, gỗ, thiết bị lọc nước và làm điện cực cho pin Lithium-ion.…”

Section: đặT Vấn đềunclassified

Lớp phủ nanocomposite epoxy/nano SiO2 tro trấu: tính chất cơ và khả năng chống ăn mòn thép carbon CT3

Thị¹,

Thị²,

Hương³

et al. 2020

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Mục đích của công trình này là chế tạo thành công các hạt nano SiO2 bằng phương pháp kết tủa từ tro trấu nung ở nhiệt độ 700 oC. Các kết quả phân tích cho thấy các hạt nano SiO2 có cấu trúc pha vô định hình và kích thước trung bình ~ 15 nm, kết tụ lại thành những đám hạt có kích thước lớn hơn và có dạng xốp. Việc bổ sung thêm 2,5% các hạt nano SiO2 tro trấu vào công thức lớp phủ đã cải thiện đáng kể các tính chất cơ của lớp phủ trên cơ sở nhựa epoxy và polyamin. Độ bền va đập tăng từ 175 kg.cm lên 190 kg.cm; độ bền mài mòn tăng từ 82,9 lit/mil lên 108,5 lit/mil và cải thiện đáng kể khả năng chống ăn mòn thép carbon CT3. Lớp phủ có tính chất cơ lý tốt và khả năng chống ăn mòn cao, có tiềm năng lớn ứng dụng làm lớp sơn lót để bảo vệ chống ăn mòn kim loại.

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“…These compounds can be redox active in solution by electrochemical oxidation because of its multielectron property, while their anion structure is preserved (Chen et al 2019;Glass et al 2016 (Tian et al 2010). Starch and cellulose are high molecular polymers formed by dehydration of glucose units (Buléon et al 1998;Goodman 2020). Therefore, POMs can be used to hydrolyze starch to produce reducing sugar (RS) (Mamman et al 2008; Mua and Jackson 1997) and glycolic acid (Zhang et al 2012), having demonstrated excellent electrochemical performance on the degradation of biomass.…”

Section: Introductionmentioning

confidence: 99%

Phosphomolybdic Acid-Catalyzed Oxidative Degradation of Waste Starch: A New Strategy For Handling The Pulping Wastewater

Qiao¹,

Yang²,

Wang³

et al. 2021

Preprint

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When old corrugated cardboard (OCC) is returned to the paper mill for repulping and reuse, the starch, which is added to the paper surface as a reinforcement agent, is dissolved into the pulping process water. Most of the OCC pulping wastewater is recycled to save precious water resources; however, during the water recycling process, the accumulation of dissolved starch stimulates microbial reproduction, which causes poor water quality and putrid odor. This problem seriously affects the stability of the papermaking process and product quality. In this study, phosphomolybdic acid (H3PMo12O40, abbreviated as PMo12) was utilized to oxidatively degrade the waste starch present in papermaking wastewater to monosaccharides, realizing the resource utilization of waste starch. The results showed that the optimized yield of total reducing sugar (73.54 wt%) and glycolic acid (11.05 wt%)was achieved at 145 °C with 30 wt% PMo12, which is equivalent to 84.59 wt% starch recovered from wastewater. In addition, the regeneration of the reduced PMo12 was realized applying a potential of 1 V for 2 h. Overall, this study has theoretical significance and potential application value for resource utilization of waste starch in OCC pulping process and cleaner management of OCC waste paper.

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Utilization of waste straw and husks from rice production: A review

Cited by 292 publications

References 240 publications

Straw/Nano-Additive Hybrids as Functional Fillers for Natural Rubber Biocomposites

Straw/Nano-Additive Hybrids as Functional Fillers for Natural Rubber Biocomposites

Lớp phủ nanocomposite epoxy/nano SiO2 tro trấu: tính chất cơ và khả năng chống ăn mòn thép carbon CT3

Phosphomolybdic Acid-Catalyzed Oxidative Degradation of Waste Starch: A New Strategy For Handling The Pulping Wastewater

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