Comparison of products from the pyrolysis and catalytic pyrolysis of rice husks

Williams, Paul T.; Nugranad, Nittaya

doi:10.1016/s0360-5442(00)00009-8

Cited by 557 publications

(320 citation statements)

References 22 publications

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“…Rice husk are an agricultural waste produced in excess of 100 million tons as a by-product of the rice milling industry of which 96% is generated in developing countries. The utilization of this source of biomass would solve some disposal problem as well as access to cheaper materials for adsorption in water pollutants control system [25]. Since the main components of rice husk are carbon and silica (15-22% SiO 2 in hydrated amorphous form like silica gel), it has the potential to be used as an adsorbent [26].…”

Section: Bio-waste Materials As Adsorbent Of Contaminate From Waste Wmentioning

confidence: 99%

Applications of Bio-waste Materials as Green Synthesis of Nanoparticles and Water Purification

Ali¹

2017

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Towards the future of green, sustainable and renewable products the suggestion of using the agriculture biomass in the coming decades got increased. Biomass material is one of the important sources of alternative material for the production of biocomposite products. An increasing global awareness about environmental issues is acting as the driving force behind the utilization of biomass material as valuable products. Bio-waste materials (agricultural waste) have been recognized as an ecological burden for the society they stimulated new gateways for the production of renewable, low cost and sustainable adsorbents for water treatment applications. In the area of water purification, nanotechnology offers the possibility of an efficient removal of pollutants and bacteria. Adsorption has proved that it is the best process of water treatment technologies, because of its significant advantages. Different modification methods of waste-based adsorbents, have also been presented to highlight and discuss the key advancements on the preparation of novel adsorbents using agricultural "agro-waste". Adsorption mechanisms responsible for pollutants removal by waste-based adsorbents have also been discussed. It also focuses on the computational aspects of binding of biomolecules to nanoparticles (NPs) and some of the applications of the biosynthesized NPs as water purification. The nature acts like a large ''bio-laboratory" comprising of plants, algae, fungi, yeast, etc. which are composed of biomolecules. These naturally occurring biomolecules have been identified to play an active role in the formation of nanoparticles with distinct shapes and sizes thereby acting as a driving force for the designing of greener, safe and environmentally benign protocols for the synthesis of NPs. The biosynthesis of NPs using waste materials will help researchers not only to design safer nanomaterials but also to promote the understanding of health and safety considerations of NPs. Useful materials can be produced easily even at reasonable scale because the biomaterial based routes eliminate the need to use toxic chemicals. The aim of this review is to summarize the adsorption capacities for organic and inorganic pollutants by different bio-waste-based adsorbents.

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Section: Bio-waste Materials As Adsorbent Of Contaminate From Waste Wmentioning

confidence: 99%

Applications of Bio-waste Materials as Green Synthesis of Nanoparticles and Water Purification

Ali¹

2017

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“…Besides the use of biomass as a second generation fuel feedstock, it can also be considered as a primary source of renewable energy, which can progressively enhance the CO 2 mitigation. Pyrolysis has been the most employed thermochemical conversion for transformation of biomass residues into charcoal and bio-oil, by one side due to the easy implementation of the technology nearby the farm crops and by other side due to the easy transportation of a denser product to further treatment in the refineries [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…The liquid product obtained from biomass pyrolysis is a complex mixture of oxygenated, aromatic and carbohydrate derived compounds, with a wide range of molecular weight, generated from the fragmentation of cellulose, hemicellulose and lignin, and from further polymerization and degradation reactions due to the high temperature used in the process [8][9][10]12,13]. Such bio-oils are viscous materials, with high acidity and corrosivity.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical Properties of Pyrolysis Bio-Oil from Sugarcane Straw and Sugarcane in Natura

Durange¹,

Santos²,

Pereira³

et al. 2013

JBNB

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Under the renewable energy context, sugarcane biomass pyrolysis has been growing as a convenient route to produce bio-oil, which can be set into the chemical industry and refineries as building blocks or combustion fuel. In this work sugarcane straw was submitted to direct pyrolysis in a fluidized bed pilot plant at 500˚C, in presence of air. Sugarcane in natura was also pyrolysed as a model for comparison, in order to determine the viability of processing different sources of raw biomass. The physicochemical characterization of the biomass precursors as well as of the bio-oils was also carried out, which points both biomass feedstocks as suitable for bio-oil production in terms of viscosity, surface tension, density and acidity. The bio-oil obtained from sugarcane in natura presented higher carbon and hydrogen content as well as lower oxygen content. On the other hand, the metal content is higher in the bio-oil obtained from sugarcane straw, in special the iron and potassium contents were 807 ppm and 123 ppm against 27 ppm and 1 ppm in the bio-oil from sugarcane in natura. Aliphatic and aromatic compounds as well as carbohydrates scaffolds were identified as the main components of the bio-oil. GC-MS analyses showed aromatic products from lignine fragmentation and free sugars and sugar derivatives.

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“…al., 2007). The husk contains about 70 -75 % volatile organic matters while the rest is hydrated silica (Park, 2003;Williams et. al., 2000).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of zeolite NaY using local rice husk as a source of silica and removal of Cr(VI) from wastewater by zeolite

Ghosh

Ahmed

Mollah

2013

Bangladesh J. Sci. Ind. Res.

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The Zeolite NaY in pure phase was synthesized from rice husk (RH) following a three step synthetic route. In the preliminary step seed gel was prepared from a mixture of silicate and Na-acetate solution. This step was then followed by the preparation of feedstock gel. The third or final step involved the mixing of seed gel (5%) and feedstock gel (95%) which produced the zeolite of desired phase, NaY. The synthesized zeolite was characterized by FT-IR, XRD, SEM and DLS particle size analyzer and used to treat wastewater containing Cr (VI). The adsorption of Cr(VI) was monitored as a function of pH of the solution, contact time and initial concentration of Cr(VI). The adsorption results revealed that after scaling up the methodology, the synthesized zeolite NaY could be used as a promising cost-effective adsorbent for the treatment of wastewater containing chromium.

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Comparison of products from the pyrolysis and catalytic pyrolysis of rice husks

Cited by 557 publications

References 22 publications

Applications of Bio-waste Materials as Green Synthesis of Nanoparticles and Water Purification

Applications of Bio-waste Materials as Green Synthesis of Nanoparticles and Water Purification

Physicochemical Properties of Pyrolysis Bio-Oil from Sugarcane Straw and Sugarcane in Natura

Synthesis and characterization of zeolite NaY using local rice husk as a source of silica and removal of Cr(VI) from wastewater by zeolite

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