Steel Reactor Research Articles

Butanol synthesis from ethanol over CuMgAl mixed oxides modified with palladium (II) and indium (III)

Ethanol conversion to butanol was investigated over mixed oxides derived from hydrotalcites modified with copper, palladium or indium. The reaction was carried out in the 403–573 K temperature range using stainless steel reactors. The presence of indium or palladium in the catalyst influences the temperature of reaction so that it was possible obtain butanol at temperature as low as 423 K. This is in line with the fact that the addition of metals with high hydrogen-transfer capacity makes faster all steps of the reaction with great energy saving. The best selectivity to butanol (65%) was achieved using In-CuMgAl catalysts with 3% of ethanol conversion at a temperature as low as 443 K.

Stability of complex catalyst with NiO@TiO2 core-shell structure for hydrogen production

Core-shell NiO@TiO2 and CaO complex catalyst was prepared to improve stability used in the reactive sorption-enhanced reforming (ReSER) process for hydrogen production. NiO@TiO2 as catalyst component was prepared by synthesizing Ni(OH)2 as core via urea hydrolysis, by coating TiO2 shell via adsorption phase reaction technique, and was mixed with nano CaO as CO2 adsorbent to form a complex catalyst. The morphology of NiO@TiO2 and the complex catalyst were characterized by means of TEM, EDS, XRD and N2 physisorption measurements. Hydrogen production performance was investigated in a fixed-bed stainless steel reactor. Results showed that the complex catalyst with core-shell NiO@TiO2 structure has 36 cyclic runs of the ReSER process for hydrogen production, while only nine cycle runs obtained without TiO2 coated as shell. It was revealed that core-shell NiO@TiO2 structure could increase the surface area of complex catalyst and promote the separation of NiO core particles. It was also found that the optimum TiO2 coating time could obtain relative smaller NiO grain. And smaller initial NiO grain in core-shell structure would improve the stability of the complex catalyst.

Assessing the diversity of lipids formed via Fischer-Tropsch-type reactions

Lipid biomarkers are commonly used for tracking life through Earth’s history and are also gaining in importance in the search for extraterrestrial life. However, some lipids may also be formed in-situ via abiotic Fischer-Tropsch-type (FTT) reactions. These processes have been considered as a source of prebiotic organic matter. Here we report on a FTT synthesis experiment performed under hydrothermal conditions, focusing on more complex, previously undescribed FTT reaction products that may potentially mimic biological signals. The experiment was carried out in stainless steel reactors by heating aqueous solutions of oxalic acid mixed with montmorillonite to 175 °C for 3 days. Organic extracts of the products and extraction residues were analyzed by gas chromatography–mass spectrometry (GC–MS) and combustion-infrared detection, attenuated total reflectance Fourier transform infrared spectroscopy and pyrolysis GC–MS. FTT reactions led to a number of biomarker-like lipids such as linear and methyl-branched alkanes and alkanols as well as n-alkanoic acids. However, FTT reactions a priori produce unimodal chain length distributions and isomeric mixtures of methyl-branched compounds, as opposed to biolipids which typically show preferences of individual homologs and/or isomers. Experimental maturation of an immature kerogen demonstrated how these biological signatures may pass into unimodal distributions similar to FTT reaction products by thermal overprint. Therefore, discrimination of biologically derived compounds from FTT organics may become increasingly problematic with ongoing thermal maturation. Extraction residues of FTT reaction products contained organic material, possibly in form of an organic polymer. However, it remains to be tested whether these residual organics can evolve into kerogen-like material.

Hydrothermal synthesis of zeolites using sanitary ware waste as a raw material

Abstract Zeolites are extensively produced by hydrothermal treatment of different raw materials, such as kaolin. Sanitary ware (SW) is a kaolin-based ceramic ware usually found in sinks, urinals and bathtubs whose production is led by Spanish domestic clay product industry. SW production generates approximately 8% of solid waste in Spain, which increases landfills sizes and pose economic, social and technical problems. This study aims to evaluate the feasibility of solid waste of SW industry to produce zeolites once subjected to a conventional hydrothermal treatment during different times and temperatures. Ground SW was subjected to dissolution in a highly basic medium (NaOH 5 M) inside a Teflon-lined stainless steel reactors, at temperatures of 100, 150 and 200 °C for 1 to 30 days. X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used to characterize both the raw material and resultant mineral phases. Quartz and mullite present in SW transform into zeolites, as temperature and time increase. Mineral assemblage at 100 °C includes zeolite P, Na-faujasite and sodalite as major component and analcime, natrolite, and zeolite A as minor, which behave as metastable phases and their relative abundance depends on aging time. Analcime and cancrinite crystallization is favored by high temperature (150 °C to 200 °C) and increasing aging time produces analcime disappearance. Cancrinite is the dominant mineral after 30 days. Conventional SW waste is an optimal raw material for zeolites synthesis under high alkaline hydrothermal conditions. Combining time and temperature it is possible to drive crystallization towards a target phase.

Dilute sulfuric acid fractionation of Korean food waste for ethanol and lactic acid production by yeast

Fermentation of food waste biomass can be used to produce biochemicals such as lactic acid and ethanol in a cost-effective manner. Korean food waste (KFW) dewatered by a screw press contains 23.1% glucan on a dry basis and is a potential raw material for the production of ethanol and lactic acid through fermentation. This study was conducted to optimize the dilute acid fractionation conditions for KFW fermentation with respect to the H2SO4 concentration (0–0.8% w/v), temperature (130–190 °C), and residence time (1–128 min) using response surface methodology. Dilute sulfuric acid fractionation was carried out using a 30-mL stainless steel reactor under conditions, and then the dilute acid fractionation was scaled-up in 1-L and 7-L stainless steel reactors under the optimal conditions. The hydrolysate was concentrated, liquid-liquid extracted and neutralized for lactic acid and ethanol production. The highest concentration of glucose obtained from the KFW was 26.4 g/L using fractionation with 0.37% w/v H2SO4 at 156 °C for 123.6 min. Using recombinant Saccharomyces cerevisiae containing a codon-optimized lactate dehydrogenase, the yield of lactic acid and ethanol was 77% of the theoretical yield for 17.4 g/L of fermentable sugar at pH 5.5. Additionally, the yield of ethanol produced by Issatchenkia orientalis was 89% of the theoretical yield for 25 g/L of fermentable sugar at pH 3.

On Fatigue Design Curves for 2.25Cr-1Mo-V Steel Reactors at Elevated Temperature in Code Case 2605

Fatigue design method for 2.25Cr-1Mo-V steel reactors in code case 2605 (CC 2605) is reviewed. Main factors such as the accelerating function of fatigue action, the cyclic frequency, the strain damage factor (β) related to the fatigue design curves are addressed, and the applicable stress level for pure creep rupture analysis in CC 2605 is also discussed. Results indicate that, for the high loading levels, the accelerating function of fatigue action and strain damage factor contribute relatively remarkably to the fatigue design curve. The increase of cyclic frequency leads to a remarkable increase of the allowable fatigue cycle number and hence reduces the conservativeness of fatigue design curve. It should be stipulated in CC 2605 that the applicable stress level is higher than a value of around 200 MPa (slightly dependent on temperature) for the adjusted uniaxial Omega damage parameter and 16 MPa for the creep strain rate when the Omega creep-damage method is employed.

Enhanced expression of a biosimilar monoclonal antibody with a novel NS0 platform.

The precise product quality and lower cost of goods demands of the growing biosimilars industry are driving biomanufacturing innovation. Biosimilar cell lines that produce complex glycoproteins such as monoclonal antibodies must be both highly productive and express a product with critical quality attributes closely matching those of the innovator reference. In this work, a biomanufacturing platform is described that harnesses the commercially-established NS0 host cell in new ways to create stable, highly productive cell lines with characteristics meeting the current demands. A cholesterol metabolic selection marker and implementation strategy that can be generically applied are shown to yield high expressing cell lines as well as eliminate the need for cholesterol addition, which has been a significant barrier in both stainless steel reactors as well as in single-use plastic systems. Additionally, for the first time, a multiplex selection strategy was implemented that served to increase NS0 cell line specific productivity >10-fold and volumetric yields >6-fold. The best overall performing cell line had a Qp of 28.5 picograms per cell per day and was rapidly adapted to a lean production medium. Yields in l-glutamine fed-batch shaker cultures exceeded 500mg/L. An initial screening of four feeding strategies resulted in a final 13-day yield of over 1.4g/L in small shaker culture. Overall, this work shows both the strategy to develop biosimilar cell lines and the commercial potential of a novel expression system highly suited for the manufacture of biosimilars of reference biologics currently produced in murine cells. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 34:455-462, 2018.

Biofuels production by thermal cracking of soap from brown grease

The transformation of waste oils and fats into biofuels attracts great interest due to the low cost of these materials. The thermal and/or catalytic cracking of oils and fats is an alternative route to the classic transesterification process of biodiesel production when the raw material has low quality. In this work, thermal cracking of sodium soaps of residual fatty materials from Brazilian restaurants (brown grease mainly composed of fatty acids of soybean oil) was tested to assess the feasibility of yielding a high quality diesel-like product. The reactions occurred in a single stirred steel reactor of 300 ml at high temperatures (723 °K) at atmospheric pressure for 1h45 min. The organic liquid product was analyzed for acid and saponification value, thermogravimetric characteristics. The chemical composition of the liquid product diesel-like fractions was determined by FT-IR, Nuclear Magnetic Resonance Spectroscopy (NMR 1H and 13C) and GC–MS. The hydrocarbons obtained were very similar to diesel oil and suitable for use, in pure form or in mixtures, in diesel oil engines. Yields above 60% and very low acidity (0.5 mg KOH/g) were obtained, meeting the requirements of ANP (Brazilian National Petroleum Agency) Resolution No 51 de 25/11/15.

Effect of water and methanol in the production of methyl methacrylate over iron phosphate catalysts

This work discusses two production routes to methyl methacrylate (MMA) over an iron phosphate catalyst, namely oxidative dehydrogenation of methyl isobutyrate (MIB) and isobutyric acid (IBA) with methanol as co-feed. In situ studies show that at 400 °C, a mixture of the iron tridymite and quartz like phases are present under air, H2 and N2. The catalyst was tested in a fixed bed stainless steel reactor. The feed was passed over the catalyst with air and methanol; and air, water and methanol. The effects of the water to feed ratio and methanol to feed ratio were studied in terms of maximum conversion, yield and selectivity to MMA. Using methyl isobutyrate as a feed and methanol as a co-feed, the best yield of methylmethacrylate obtained was 40%. This corresponds to a selectivity of 73%, at a conversion of 55%. Feeding isobutyric acid and methanol over the iron phosphate catalyst gave an optimum yield of 15% methyl methacrylate at 400 °C. The yield of the products increased with increasing methanol/IBA ratio due to methanol limiting the hydrolysis reactions. The results obtained in this study show that MMA can be formed by the oxidative dehydrogenation–esterification of IBA and methanol over the iron phosphate catalyst.

Partial Oxidation of Ethanol Using VOx/SBA-15 and VOx/Fumed Silica Catalysts in a Bench-scale Stainless Steel Reactor

Two VOx/SBA-15 catalysts and three VOx/SiO2-fumed silica, with 5, 10 and 1, 5, 10 %wt. vanadium content respectively, were tested in a stainless steel continuous flow reactor for the partial oxidation of ethanol. The catalysts were tested at 150 – 300 °C. Products were analyzed by GC-FID, GC-OFID and GC-MS. The aim was exploring the problematics which could be found when more industrial close conditions are used. The total conversion of ethanol and selectivity to acetaldehyde were different than the expected ones. For VOx/SiO2-fumed silica, the total conversion was higher with a lower selectivity to acetaldehyde compared to VOx/SBA-15 catalysts.

Hydrogen Production From catalytic reforming of greenhouse gases (CO<sub>2</sub> and CH<sub>4</sub>) Over Neodymiun (III) oxide supported Cobalt catalyst

Hydrogen production from CO2 reforming of methane over 20wt%.Co/Nd2O3 has been investigated in a fixed bed stainless steel reactor. The 20wt%.Co/Nd2O3 catalyst was synthesized using wet impregnation method and characterized for thermal stability, textural property, crystallinity, morphology and nature of chemical bonds using techniques such as TGA, XRD, N2 adsorption-desorption, FESEM, EDX and FTIR. The CO2 reforming of methane was performed at feed ratio (CH4:CO2) between 0.1-1 and reaction temperature ranged 973-1023 K. The catalyst displayed good activity towards selectivity and yield of hydrogen as well as CO, a by product. The selectivity and yield of Hydrogen increases with feed ratio and reaction temperature. The 20wt%.Co/Nd2O3 catalyst displayed promising catalytic activity for hydrogen production with the highest yield and selectivity of 32.5% and 17.6% respectively.Keywords: Cobalt; Greenhouse gases; Hydrogen; Reforming;; Neodymium (III)Oxide

Kinetics and mechanistic studies of CO-rich hydrogen production by CH4/CO2 reforming over Praseodymia supported cobalt catalysts

The production of hydrogen and syngas by catalytic methane dry reforming is often accompanied by carbon deposition. In order to mitigate the effect of carbon deposition, it is important to have a full understanding of the elementary steps involve in the methane dry reforming over a given catalyst. This will enable the proper design and optimization of such catalyst to minimize catalyst deactivation by carbon deposition. In this study, the kinetic and mechanistic features of 20 wt%Co/Pr2O3 catalyst in the methane dry reforming reaction has been investigated as a function of CH4 and CO2 partial pressures and reaction temperature. The 20 wt%Co/Pr2O3 catalyst was synthesized by wet impregnation method and characterized for its physicochemical properties by TGA, XRD, N2-physisorption analysis, TEM, FESEM, EDX, H2-TPR, NH3 and CO2. The excellent physicochemical properties of the 20 wt%Co/Pr2O3 catalysts resulted in a high rate of CH4(rCH4) and CO2(rCO2)consumption. The highest values of 3.6 mmol gcat−1 min−1 and 3.2 mmol gcat−1 min−1 were obtained for rCH4 and rCO2, respectively at 50 kPa and 1023 K. The kinetic behavior of the as-synthesized 20 wt%Co/Pr2O3 catalyst in the methane dry reforming reaction was measured in a fixed bed stainless steel reactor at CH4/CO2 partial pressure range of 5–50 kPa and temperature range of 923–1023 K. The data obtained from the kinetic measurement were fitted into seven Langmuir-Hinshelwood (LH) Models. The Model were statistically discriminated using root mean square deviation (rmsd) and coefficient of determination (R2). The statistical analysis revealed that LH kinetic Model 7 (2-step dual site rate determining steps (RDS) involving CH4 activation by metal Co and C gasification by adsorbed CO2 on support site) fits very well the experimental data. The R2 values of 0.962, 0.982, and 0.989 as well as, rmsd values of 0.095 0.038, and 0.035 were obtained at 923, 973, and 1023 K respectively. Activation energies of 61.67 and 32.52 kJ/mol were obtained for the rate of consumptions of CH4 and CO2, an indication that lower energy barrier is required for the activation of CO2 compared to CH4. Based on Model 7, the mechanism of the methane dry reforming reaction over the 20 wt%Co/Pr2O3 catalyst can best be described by 2-step dual site rate determining steps whereby the activation of CH4 by the metal Co resulted in hydrogen and carbon formation. The carbon formed was subsequently gasified by the lattice oxygen released from the activation of the CO2 by the support site.

Performance Evaluation of Absorber Reactors for Solar Fuel Production

Waste to energy conversion through thermochemical processing offers a potential option for valorisation of waste biomass, however, it requires external heat supply to process the waste. Solar energy is a promising solution to convert the waste and produce alternative fuels that can replace coal, oil and natural gas for heat and electricity generation. To realize this, the radiation from the sun should be converted to thermal energy. Among the solar concentrators, parabolic dish gives the highest concentration ratio per area in converting the solar energy to heat and electricity. The absorber is the main part of the dish which is placed at the focal point and converts the radiation to thermal energy. In this work, experiments were conducted on stainless steel, copper, ceramic and glass reactors as absorber materials of parabolic dish with aperture diameter 1.8 m coated with aluminium pet as reflective material. The objective of this research was to evaluate solar radiation-absorbing performance of the reactors and design efficient reactor for solar fuel production. Two sets of experiments were conducted. First, each of the reactors was placed at the focal point then the heating rate and maximum temperatures inside the reactors were recorded as a function of radiation intensity using K-type thermocouples. Secondly, each reactor was coated using carbon soot and then the experiment was repeated. Results showed that the coated glass reactor has the best performance in all the absorbers. Of the uncoated reactors, the stainless steel gave best results with stable and uniform temperature distribution inside the reactor. The results can be used as benchmarks for future design and application of the solar thermal technology.

Delignification of Date Palm Fronds using Modified Organosolv Technique

Abstract 
 In this study, modified organic solvent (organosolv) method was applied to remove high lignin content in the date palm fronds (type Al-Zahdi) which was taken from the Iraqi gardens. In modified organosolv, lignocellulosic material is fractionated into its constituents (lignin, cellulose and hemicellulose). In this process, solvent (organic)-water is brought into contact with the lignocellulosic biomass at high temperature, using stainless steel reactor (digester). Therefor; most of hemicellulose will remove from the biomass, while the solid residue (mainly cellulose) can be used in various industrial fields. Three variables were studied in this process: temperature, ratio of ethanol to water and digestion time. Statistical experimental design type Central Composite Design (CCD) has been used to find a mathematical relationship between the variables and the remaining lignin percent as dependent variable. The results obtained in this study were represented by a polynomial mathematical equation of the second degree. The results showed that the best digestion time was (80 minutes), which gave the best percent remaining concentration of lignin (3%) at temperature of 185oC and ratio of ethanol: water equal to 50: 50 wt/wt. In order to reduce digesting time, the effect of using different catalysts have been studied such as (NaOH, H2SO4, Ca (OH) 2) at low concentration (0.025, 0.025, 0.05M) respectively. It was found that the best catalyst is sodium hydroxide at concentration (0.025) mol/L which gave the same percent of lignin 3% but with low digestion time about 30 min.
 Keywords: Biomass pre-treatment, delignification, lignin, organosolv, date palm fronds.

Synthesis of Multi-Walled Carbon Nanotubes from Plastic Waste Using a Stainless-Steel CVD Reactor as Catalyst.

The disposal of non-biodegradable plastic waste without further upgrading/downgrading is not environmentally acceptable and many methods to overcome the problem have been proposed. Herein we indicate a simple method to make high-value nanomaterials from plastic waste as a partial solution to the environmental problem. Laboratory-based waste centrifuge tubes made of polypropylene were chosen as a carbon source to show the process principle. In the process, multi-walled carbon nanotubes (MWCNTs) were synthesized from plastic waste in a two-stage stainless steel 316 (SS 316) metal tube that acted as both reactor vessel and catalyst. The steel reactor contains Fe (and Ni, and various alloys), which act as the catalyst for the carbon conversion process. The reaction and products were studied using electron probe microanalysis, thermogravimetric analysis, Raman spectroscopy and transmission electron microscopy and scanning electron microscopy. Optimization studies to determine the effect of different parameters on the process showed that the highest yield and most graphitized MWCNTs were formed at 900 °C under the reaction conditions used (yield 42%; Raman ID/IG ratio = 0.48). The high quality and high yield of the MWCNTs that were produced in a flow reactor from plastic waste using a two stage SS 316 chemical vapor deposition (CVD) furnace did not require the use of an added catalyst.

Adsorption of copper from waste printed circuit boards with modified orange peels

Copper adsorption from waste printed circuit boards (PCBs) was studied using biosorbents derived from waste orange peels (OP). The orange peels were modified by different methods including saponification with NaOH (OP-S), crosslinking with sodium trimetaphosphate and sodium tripolyphosphate (OP-C), hydroxypropylation with propylene oxide (OP-H), and acidification with citric acid (OP-A) to increase the adsorption capacity of orange peels. Adsorption tests on the copper (Cu) model solutions were performed by using native and modified orange peels at three different temperatures (25 °C, 40 °C, and 60 °C) to determine the optimum adsorption conditions. The PCB was pyrolyzed in a fixed bed stainless steel reactor to obtain a solid product that contained only inorganic material. Metals were then leached from the solid product, and adsorption studies were realized on the leach solution under optimum adsorption conditions. According to the analyses results, the best adsorption efficiency for the Cu model solution was obtained with OP-S at 25 C for 30 min. Under these conditions, the Cu adsorption efficiency from pyrolysis solid product was approximately 86%.

STEAM GASIFICATION OF SOME MONGOLIAN COALS

The gasification tests for the Alagtolgoi and Ailbayan coal deposits were conducted in the temperature up to 850°C using bench scale reactor in order to evaluate product gas composition. Prior to the gasification experiments, the raw coal was pyrolysed in a stainless steel reactor under N2 atmosphere at a temperature of 500°C for 1 h. General behavior of the coal conversion was quite similar for both coals. The gasification tests show that an increase in temperature enhances the formation of hydrogen, carbon dioxide and carbon monoxide. The highest yield of hydrogen and carbon dioxide concentrations of the Ailbayan coal are achieved at temperature of 850°C, which were 2.859 mmol⋅g-1⋅min-1 and 1.054 mmol⋅g-1⋅min-1 respectively. However maximum rate of hydrogen for Alagtolgoi subbituminous coal reached around 800°C. Overall results show that the maximum gasification rate is reached earlier for subbituminous coal than for bituminous coal, but product gas evolution was higher for the investigated bituminous coal.

Jatropha curcas crude oil as heat transfer fluid or thermal energy storage material for concentrating solar power plants

Valorisation of local and low cost eco-materials has become an imperative for the sustainable development of Concentrating Solar Power (CSP) in West Africa. In this study, Jatropha curcas crude oil is studied as alternative heat transfer fluid or thermal energy storage material, particularly as a thermal oil substitute. The thermal stability of Jatropha curcas crude oil was experimentally investigated. The crude oil was aged by through thermal treatments, using galvanised steel and 316L stainless steel reactor under steady-state and dynamic conditions up to 210°C. The change in physico-chemical parameters of Jatropha curcas crude oil, such as viscosity, flash point, acidity number, water content, iodine value, peroxide value and chemical composition was monitored. The results indicate a relative stability of the total acid number during the dynamic and pseudo-static tests both in galvanised steel and in 316L stainless steel reactors. The results also show that the measured viscosity at 40°C remains practically constant after tests in steady-state conditions. This is also the case of the total acidity number. The evolution of iron and zinc contents of the oil shows that the use of 316L stainless steel material highly limits the degradation process of Jatropha curcas crude oil. Therefore, the main benefits of Jatropha curcas crude oil are its sustainable character, wide availability, good energy storage density, low cost and absence of use conflict. The oil can, therefore, be considered a suitable candidate for thermal applications up to 210°C, such as small scale CSP plants.

Pré-tratamento hidrotérmico de resíduos do milho visando à produção de etanol de segunda geração

Esse trabalho avaliou o potencial de produção de etanol de segunda geração (E2G) a partir da palha e do sabugo de milho. Os resíduos do milho foram submetidos ao pré-tratamento hidrotérmico (PTH), hidrólise enzimática e fermentação. O PTH foi realizado em reator de aço inoxidável em duas condições: 170°C/15 min e 195°C/10 min, em agitação de 200 rpm. As frações quantificadas foram: celulose, hemicelulose, lignina, cinzas, proteína e extrativos. Após pré-tratamento hidrotérmico, a amostra de palha apresentou 70,7% de remoção de hemicelulose a 170°C/15 min e 89,7% a 195°C/10 min. A menor perda de celulose ocorreu na condição mais branda de temperatura (170°C). Em relação ao sabugo, a remoção de hemicelulose foi de 58,7% a 170°C/15 min e 67,8% a 195°C/10 min. A menor perda de celulose foi obtida na maior temperatura (195°C). As amostras pré-tratadas foram submetidas a experimentos de hidrólise enzimática e fermentação. Obteve-se 87,5% de eficiência na fermentação para a palha pré-tratada a 170°C e 15 min e 86,9% para o sabugo pré-tratado a 195°C e 10 min. Os resultados indicam que os resíduos do milho são promissores para a obtenção de etanol de segunda geração visto que cerca de 2.500,000 mil litros de etanol podem ser obtidos a partir do processamento da palha e do sabugo de milho nas regiões centro-oeste, sul e sudeste do Brasil, sem aumentar as áreas de cultivo.

Chromatographic characterization of bio-oil generated from rapid pyrolysis of rice husk in stainless steel reactor

This paper reports the use of GC/qMS for the qualitative and quantitative characterization of compounds present in the bio-oil obtained by rapid pyrolysis of the rice husk in a pilot plant with stainless steel reactor at 500 and 700°C. To advantage the sensitivity and selectivity of the detector to the analytes, derivatization was employed, improving the identification of the constituents of the bio-oil. In the qualitative analysis, high composition of compounds of the carboxylic acid, ketone and phenol functions were identified. Quantitative analysis, which allows the determination of compound concentrations, provided the concentrations of the major compounds of bio-oil, benzofuran, phenols and vanillin. Phenol, cresols, ethyl phenols and 2-methoxy-4-vinyl showed the highest levels of concentration. The quantitative analysis also demonstrated that the process can be satisfactorily developed at a lower temperature, 500°C, obtaining bio-oil with the same composition as that obtained at 700°C, providing energy savings during the pyrolysis process. The final disposal of the rice husk may be accompanied by environmental problems, requiring special treatment. However, its pyrolysis to obtain bio-oil presents, besides environmental advantages, the possibility of obtaining products of great industrial interest.