Preparation and characterization of aluminum oxide coated extracted silica from rice husk ash for monoglyceride removal in crude biodiesel production

Saengprachum, Nisakorn; Pengprecha, Somchai

doi:10.1016/j.jtice.2015.06.037

Cited by 8 publications

(9 citation statements)

References 26 publications

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“…2, the intense peaks at 800 and 1,090 cm -1 may be attributed respectively to symmetric and asymmetric stretching vibration of the Si-O-Si bonds (siloxane group). It can be implied that all materials can be ascribed to composite of Si-O stretching in silica (SiO2) [15]. The spectra in the range of 600 -1,400 cm -1 are mostly the framework vibration characteristic of tetrahedron of silica with oxygen [13,21,22].…”

Section: Chemical Functional Groupsmentioning

confidence: 99%

“…The filtrate was set to cool to room temperature. Finally, the sodium silicate (SS) was obtained and stored in a capped glass bottle for future use [15]. In order to prepare the rice husk silica (RHS), the pH of the filtrate or SS was adjusted with H2SO4 solution (5.00 N) to a pH of 2 and adjusted back with NH4OH to a pH of 8.5.…”

Section: Preparation Of Sodium Silicate (Ss)mentioning

confidence: 99%

“…Therefore, there is a need to find renewable sources in order to reduce the raw materials costs, and to give environment benefits. Rice husk ash or RHA is the one material contained a significant quantity of silica [14][15][16][17], especially, RHA was collected as the waste product from a biomass power plant in Thailand's Phichit, a province in the north-central region of the country. The best way to prepare rice husk ash is to employ a base extraction method [16][17][18][19][20], whereby the obtained material can be used as a raw material to generate inorganic precursor or sodium silicate.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis and Characterization of Bimodal Mesoporous Silica Derived from Rice Husk Ash

Watthanachai¹,

Ngamcharussrivichai²,

Pengprecha³

2019

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This study was able to obtain bimodal mesoporous silica through a process of synthesizing silica derived from rice husk ash in conjunction with structure-directing agents (Pluronic P123 and cetyltrimethyl ammonium bromide (CTAB)) and the application of the sol-gel method. Rice husk ash taken from a biomass power plant went through a process of extraction using sodium hydroxide. The procedures of X-ray diffraction, X-ray fluorescence spectrometer, Fourier-transform infrared spectrometer, N2 adsorption-desorption isotherm, Transmission electron microscope and Scanning electron microscope techniques in order to perform the characteristics of bimodal mesoporous silica (BMS), unimodal mesoporous silica with Pluronic P123 (UMS-P123), unimodal mesoporous silica with cetyltrimethyl ammonium bromide (UMS-CTAB) and rice husk silica (RHS). The results showed that bimodal mesoporous silica with the prominent characteristic of larger mesopore were created when materials such as SBA-15 (the dominant characteristics of Pluronic P123), and with CTAB incorporated, in which the mesopore in a smaller size originated from parent templates. The specific surface area (>700 m 2 /g), pore volume (1.30 cm 3 /g) and pore size (9.20 and 3.30 nm) of bimodal mesoporous silica was found to be higher unimodal mesoporous silica (UMS-P123 and UMS-CTAB). Consequently, bimodal mesoporous silica synthesize from rice husk ash is considered to be a very suitable material which has the potential to be applied for an adsorbent and also gave the environment benefits and renewable resource.

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Section: Chemical Functional Groupsmentioning

confidence: 99%

Section: Preparation Of Sodium Silicate (Ss)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis and Characterization of Bimodal Mesoporous Silica Derived from Rice Husk Ash

Watthanachai¹,

Ngamcharussrivichai²,

Pengprecha³

2019

Self Cite

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“…The dry-washing technique aims to replace the above one, and, as there is no need for water, there is no product loss, and it provides the extra advantage of selecting the most proper adsorbent. There are many efficient compounds for dry washing, such as silica and starch and cellulolytic derivatives, and ion exchange resin [372][373][374]. The search for more economical, eco-friendly materials, leading to biodiesel purification without interacting and changing the main product, seems to be necessary.…”

Section: Purification Of Biodieselmentioning

confidence: 99%

An Overview of Potential Oleaginous Microorganisms and Their Role in Biodiesel and Omega-3 Fatty Acid-Based Industries

et al. 2020

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Microorganisms are known to be natural oil producers in their cellular compartments. Microorganisms that accumulate more than 20% w/w of lipids on a cell dry weight basis are considered as oleaginous microorganisms. These are capable of synthesizing vast majority of fatty acids from short hydrocarbonated chain (C6) to long hydrocarbonated chain (C36), which may be saturated (SFA), monounsaturated (MUFA), or polyunsaturated fatty acids (PUFA), depending on the presence and number of double bonds in hydrocarbonated chains. Depending on the fatty acid profile, the oils obtained from oleaginous microorganisms are utilized as feedstock for either biodiesel production or as nutraceuticals. Mainly microalgae, bacteria, and yeasts are involved in the production of biodiesel, whereas thraustochytrids, fungi, and some of the microalgae are well known to be producers of very long-chain PUFA (omega-3 fatty acids). In this review article, the type of oleaginous microorganisms and their expertise in the field of biodiesel or omega-3 fatty acids, advances in metabolic engineering tools for enhanced lipid accumulation, upstream and downstream processing of lipids, including purification of biodiesel and concentration of omega-3 fatty acids are reviewed.

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“…Also monoglyceride removal in crude biodiesel production is done by coating aluminium oxide on extracted silica from RHA (Saengprachum and Pengprecha 2016), with the support vanadium pentoxide for transesterification of different triglyceride sources as acyl-acceptor group ethanol (Almeida et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Rice husk ash as a potential carrier for the immobilization of lipases applied in the enzymatic production of biodiesel

Bonet-Ragel

López-Pou

Tutusaus

et al. 2017

Biocatalysis and Biotransformation

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The potential application of rice husk ash (RH26) as support for the immobilization of a recombinant Rhizopus oryzae (rROL) lipase as biocatalyst in the enzymatic biodiesel production using alperujo oil and the comparison with commercial hydrophobic support OD403 (RelOD) has been made. Although the specific activity (UA mg support À1 ) was around one-half lower in RH26 than in RelOD when they were used as biocatalyst in biodiesel reaction, the normalized initial rate was similar, between 1.6 and 2.4 lmol FAME mL À1 mL À1 UA À1 . Thus in terms of biocatalysis performance, rice husk as is an alternative to commercial supports. However, the main problem is the more complex recovery of RH26 for the reutilization compared with commercial ones. ARTICLE HISTORY

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Preparation and characterization of aluminum oxide coated extracted silica from rice husk ash for monoglyceride removal in crude biodiesel production

Cited by 8 publications

References 26 publications

Synthesis and Characterization of Bimodal Mesoporous Silica Derived from Rice Husk Ash

Synthesis and Characterization of Bimodal Mesoporous Silica Derived from Rice Husk Ash

An Overview of Potential Oleaginous Microorganisms and Their Role in Biodiesel and Omega-3 Fatty Acid-Based Industries

Rice husk ash as a potential carrier for the immobilization of lipases applied in the enzymatic production of biodiesel

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