Recovery of value added products from rice husk ash to explore an economic way for recycle and reuse of agricultural waste

The growing cognizance of environmental matters elucidates the increasing attention thought the evaluation of bio‐based by‐products and waste materials in various applications. The agricultural‐based industry results in considerable amounts of residues containing silica. In the past decade, extensive research studies had been executed to evaluate agricultural waste materials such as rice husk and rice straw. The results of the studies point out the possibility of evaluating such wastes to produce silica‐based materials. Wheat husk is such an abundantly available waste obtained from the wheat milling process. It is containing noncrystalline silica, and thus, it can also be evaluated to produce value added materials. This study presents a comprehensive overview of the researches carried out on the properties and utilization of wheat husk as a silica source. The summary and discussion presented in this review would provide knowledge on wheat husk that is convenient to be utilized for the low‐cost and sustainable production of silica‐based materials such as aerogel, metal silicates, zeolite, silica‐based ceramics, and composites.

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“…However, tetraethoxysilane is a highly toxic precursor. Additionally, these are expensive starting materials, making the end product expensive …”

Section: Wheat Husk Silica‐based Materialsmentioning

confidence: 99%

“…Additionally, these are expensive starting materials, making the end product expensive. 62 Silicon is the second most abundant element in Earth's crust, which is making up approximately 32% of the total weight of soil. Consequently, some plants rooting in soil includes silicon in their cells and intercellular spaces.…”

Section: Silicamentioning

confidence: 99%

Review on a novel biosilica source for production of advanced silica‐based materials: Wheat husk

Terzioğlu

Yücel

Kuş

2018

Asia-Pacific J Chem Eng

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“…Regeneration by NaOH has been successfully used for rice husk that has been used for arsenate (Luo et al, 2016) and Pb adsorption (Masoumi et al, 2016). Rice husk ash, a product of the incineration of rice husk, has many uses including catalyst carriers, fillers in cement, fertilisers, and production of gels and polymers (Kumar et al, 2016). This would be a useful post-treatment use of rice husk, provided that the contaminants would be contained and not leached to the environment.…”

Section: Regeneration 144mentioning

confidence: 99%

The potential for the use of waste products from a variety of sectors in water treatment processes

Grace

Clifford

Healy

2016

Journal of Cleaner Production

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“…Composites using agricultural and forestry residues as raw materials with potentially high-performance, multifunctional and biodegradable ecological advantages, are viewed as very promising for new-generation lightweight and low-cost bio-based sustainable building materials. Rice is the main human crop, with a large area and giving rice husk as a by-product of rice production [1], the annual output of it is large but most of it is burned by producers. However, its main components are similar to wood with constituents such as cellulose, hemicellulose, lignin and silica [2]; the current use of husk is mainly in situ burning, feed or activated carbon, materialization [3][4][5], energy [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Rice Husk/HDPE Bio-Composites Interfacial Properties by Silane Coupling Agent and Compatibilizer Complementary Modification

et al. 2019

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Composites using agricultural and forestry residues as raw materials with potentially high-performance, multifunctional and biodegradable ecological advantages, are viewed as very promising for new-generation lightweight and low-cost bio-based sustainable building materials. At present, the research on wood-plastic composite materials is relatively mature. However, it is still a challenge to effectively use other biomass and improve the interface of the high-polymer compound system. Herein, we proposed a simple and effective method to enhance the interfacial adhesion properties of rice husk fibre and High Density Polyethylene (HDPE) composites by the silane coupling agent KH-550 and compatibilizer Maleic anhydride grafted polyethylene (MAPE) with complementary modification. It was found that the coupling agent KH-550 cross-linked with the hydroxyl group on the husk fibre surface and solidified with the high polymer by –NH–, –C=O– functional group generation. Compatibilizer MAPE strengthened the two phases by covalently bonding with an ester linkage and lowered the roughness of the cross-section of the composites. Meanwhile the modification enhanced the dispersibility, and mechanical properties of the husk-high polymer compound system, the bending and flexural strength were improved by 11.5% and 28.9% with KH-550, and MAPE added, respectively. The flexural strength of the composites increased by 40.7% after complementary modification. Furthermore, the complementary modification treatment reduced the hydrophilic hydroxyl groups and increased the molecular chain to improve the water-resistance, elastic modulus and toughness of the composite. This study prepared a bio-composite, which is expected to expand the use of agricultural and forestry residues as an extension of wood-plastic composites.

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Recovery of value added products from rice husk ash to explore an economic way for recycle and reuse of agricultural waste

Cited by 73 publications

References 85 publications

Review on a novel biosilica source for production of advanced silica‐based materials: Wheat husk

Review on a novel biosilica source for production of advanced silica‐based materials: Wheat husk

The potential for the use of waste products from a variety of sectors in water treatment processes

Improvement of Rice Husk/HDPE Bio-Composites Interfacial Properties by Silane Coupling Agent and Compatibilizer Complementary Modification

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