The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Roger Ruan - One of the best experts on this subject based on the ideXlab platform.
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microwave assisted catalytic upgrading of co pyrolysis vapor using hzsm 5 and mcm 41 for bio oil production co feeding of soapstock and straw in a downdraft reactor
Bioresource Technology, 2020Co-Authors: Qiuhao Wu, Roger Ruan, Lin Jiang, Yunpu Wang, Yujie Peng, Qi Yang, Linyao Ke, Sha YangAbstract:Abstract Microwave-assisted co-pyrolysis of low hydrogen-to-carbon and high hydrogen-to-carbon effective ratio materials with the aid of HZSM-5 and MCM-41 is a promising technique to improve the bio-oil quality. The low content of hydrocarbons and short life cycle of catalyst limit the application of pyrolysis technology in biomass energy conversion. The effects of catalytic temperature, and HZSM-5-to-MCM-41, feedstock-to-catalyst, and straw-to-soapstock ratios on the yield and composition of bio-oil were studied in this work. The quality of bio-oil during biomass pyrolysis can be improved by adjusting the operating conditions. The optimal catalytic temperature, and ratios of HZSM-5-to-MCM-41, feedstock-to-catalyst, and straw-to-soapstock were 400 °C, 1:1, 2:1, and 1:2, respectively. The addition of MCM-41 was beneficial in prolonging the life of HZSM-5 since the macromolecular compounds cracked when MCM-41 was added which restrain the generation of coke. The co-pyrolysis of soapstock with straw advanced the deoxygenation of oxygen-containing compounds especially phenol from straw during pyrolysis.
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Microwave-assisted pyrolysis of vegetable oil soapstock: Comparative study of rapeseed, sunflower, corn, soybean, rice, and peanut oil soapstock
International Journal of Agricultural and Biological Engineering, 2019Co-Authors: Wang Yunpu, Zhang Shumei, Wu Qiuhao, Dengle Duan, Yuhuan Liu, Roger Ruan, Leilei Dai, Lin JiangAbstract:In this study, the effects of catalytic temperature and the type of soapstock on products from microwave-assisted pyrolysis were investigated. HZSM-5 was used as the catalyst to study the pyrolysis of six different Soapstocks at 200°C, 300°C, and 400°C catalytic temperature. Results showed that the bio-oil yields initially increased and then decreased with the increase in catalytic temperature. When the catalytic temperature was 300°C, the bio-oil reached up to the maximum value (65.8 wt.%). Findings indicated that the composition of bio-oil was related to the degree of unsaturation of fatty acids sodium in the Soapstocks. In the case of saturated fatty acid sodium, a series of alkanes was formed, whereas the pyrolysis of monounsaturated fatty acid sodium resulted mainly in cycloalkanes, the cycloalkenes obtained from bio-oil was produced by polyunsaturated fatty acid sodium. Keywords: microwave pyrolysis vegetable oil soapstock, HZSM-5, bio-oil DOI: 10.25165/j.ijabe.20191206.4599 Citation: Wang Y P, Zhang S M, Wu Q H, Duan D L, Liu Y H, Ruan R, et al. Microwave-assisted pyrolysis of vegetable oil soapstock: Comparative study of rapeseed, sunflower, corn, soybean, rice, and peanut oil soapstock. Int J Agric & Biol Eng, 2019; 12(6): 202–208.
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co pyrolysis of biomass and soapstock in a downdraft reactor using a novel zsm 5 sic composite catalyst
Bioresource Technology, 2019Co-Authors: Lin Jiang, Yuhuan Liu, Leilei Dai, Yunpu Wang, Bo Zhang, Qi Yang, Sha Yang, Deyu Jiang, Roger RuanAbstract:Abstract A ZSM-5/SiC composite catalyst was synthesized and characterized by Brunauer–Emmett–Teller analysis, X-ray diffraction, and scanning electron microscopy in this study. The composite catalyst had the characteristics of ZSM-5 and SiC, and the surface of SiC grew evenly with a layer of ZSM-5. The effect of the composite catalyst on the product distribution and chemical composition in a co-pyrolysis downdraft system was investigated. In a down system with a catalytic temperature of 450 °C, a feed-to-catalyst ratio of 2:1, and a soybean-soapstock-to-straw ratio of 1:1, the proportions of alkanes, olefins, aromatics, and phenoxy compounds were 6.82%, 4.5%, 73.56% and 11.11%, respectively. The composite catalyst combined the catalytic performance of ZSM-5 and SiC, increasing the proportion of aromatics and decreasing the proportion of oxygen-containing compound in the bio-oil. Moreover, the composite catalyst maintained its activity after reusing several times.
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Ex-situ catalytic upgrading of vapors from fast microwave-assisted co-pyrolysis of Chromolaena odorata and soybean soapstock.
Bioresource Technology, 2018Co-Authors: Yunpu Wang, Zhang Shumei, Wu Qiuhao, Dengle Duan, Yuhuan Liu, Roger Ruan, Leilei Dai, Yue Zhou, Yunfeng Zhao, Zeng ZihongAbstract:Fast microwave-assisted catalytic co-pyrolysis of Chromolaena odorata (C. odorata) and soybean soapstock with HZSM-5 as an ex-situ catalyst was investigated. Effects of catalytic temperature, feedstock: catalyst ratio and C. odorata: soybean soapstock ratio on the yield and composition of the bio-oil were discussed. Results showed that catalytic temperature greatly influenced the bio-oil yield. Co-pyrolysis of C. odorata and soybean soapstock improved the bio-oil yield, and the maximum bio-oil yield of 55.14% was obtained at 250 °C. However, the addition of HZSM-5 decreased bio-oil yield but improved the quality of bio-oil. Moreover, the proportion of oxygen-containing compounds decreased dramatically with the addition of soybean soapstock. The C. odorata: soybean soapstock ratio of 1:2 and feedstock: catalyst ratio of 2:1 were the optimal condition to upgrade the bio-oil. In addition, the resulted biochar contained various essential elements and could be used as soil repair agent.
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microwave assisted catalytic fast co pyrolysis of soapstock and waste tire for bio oil production
Journal of Analytical and Applied Pyrolysis, 2017Co-Authors: Leilei Dai, Dengle Duan, Yuhuan Liu, Roger Ruan, Yunpu Wang, Yue Zhou, Liangliang Fan, Yunfeng ZhaoAbstract:Abstract Microwave-assisted catalytic fast co-pyrolysis using HZSM-5 as catalyst was tested on soapstock and waste tire. Effects of co-pyrolysis temperature, catalyst to feed ratio and soapstock to tire ratio on product fractional yields and chemical composition were studied. Experimental results indicated that the optimal co-pyrolysis temperature was 550 °C, where the highest yield of bio-oil and proportion of aromatics in the bio-oil was obtained. The use of catalyst enhanced the proportion of aromatics, but reduced the yield of bio-oil. Waste tire presented a significant synergistic effect with soapstock to facilitate the production of aromatics in the bio-oil. In addition, the char as a by-product can be used as soil amendment or solid fuel.
Yunpu Wang - One of the best experts on this subject based on the ideXlab platform.
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conversion of soybean soapstock into hydrocarbon fuel by microwave assisted catalytic fast pyrolysis using mcm 41 hzsm 5 in a downdraft reactor
Chemical Engineering and Processing, 2020Co-Authors: Xiuhua Yang, Leilei Dai, Lin Jiang, Yunpu Wang, Xiaojie Tian, Zihong Zeng, Shumei Zhang, Yujie PengAbstract:Abstract Microwave-assisted catalytic pyrolysis of biomass is a promising technology to obtain hydrocarbon rich fuel oil. In consideration of this method, HZSM-5 is currently recognized as a catalyst with a good effect. However, given the small pore diameter and easy coking of HZSM-5, the catalytic upgrading of bio-oil is limited to a certain extent. In this study, MCM-41 and HZSM-5 were used for joint catalysis to explore the effect of catalytic temperature, the ratio of two catalysts, and the ratio of soybean soapstock and catalysts on the pyrolysis products. The optimal reaction conditions included the following: catalytic temperature, 400 °C; MCM-41/HZSM-5 ratio, 1:1; feedstock/catalyst ratio, 2:1. The results showed that MCM-41 could effectively alleviate the coking of HZSM-5, and the use of both catalysts reduced the bio-oil yield but effectively improved the selectivity of monocyclic aromatic hydrocarbons in bio-oil, thus increasing the value of bio-oil.
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microwave assisted catalytic upgrading of co pyrolysis vapor using hzsm 5 and mcm 41 for bio oil production co feeding of soapstock and straw in a downdraft reactor
Bioresource Technology, 2020Co-Authors: Qiuhao Wu, Roger Ruan, Lin Jiang, Yunpu Wang, Yujie Peng, Qi Yang, Linyao Ke, Sha YangAbstract:Abstract Microwave-assisted co-pyrolysis of low hydrogen-to-carbon and high hydrogen-to-carbon effective ratio materials with the aid of HZSM-5 and MCM-41 is a promising technique to improve the bio-oil quality. The low content of hydrocarbons and short life cycle of catalyst limit the application of pyrolysis technology in biomass energy conversion. The effects of catalytic temperature, and HZSM-5-to-MCM-41, feedstock-to-catalyst, and straw-to-soapstock ratios on the yield and composition of bio-oil were studied in this work. The quality of bio-oil during biomass pyrolysis can be improved by adjusting the operating conditions. The optimal catalytic temperature, and ratios of HZSM-5-to-MCM-41, feedstock-to-catalyst, and straw-to-soapstock were 400 °C, 1:1, 2:1, and 1:2, respectively. The addition of MCM-41 was beneficial in prolonging the life of HZSM-5 since the macromolecular compounds cracked when MCM-41 was added which restrain the generation of coke. The co-pyrolysis of soapstock with straw advanced the deoxygenation of oxygen-containing compounds especially phenol from straw during pyrolysis.
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co pyrolysis of biomass and soapstock in a downdraft reactor using a novel zsm 5 sic composite catalyst
Bioresource Technology, 2019Co-Authors: Lin Jiang, Yuhuan Liu, Leilei Dai, Yunpu Wang, Bo Zhang, Qi Yang, Sha Yang, Deyu Jiang, Roger RuanAbstract:Abstract A ZSM-5/SiC composite catalyst was synthesized and characterized by Brunauer–Emmett–Teller analysis, X-ray diffraction, and scanning electron microscopy in this study. The composite catalyst had the characteristics of ZSM-5 and SiC, and the surface of SiC grew evenly with a layer of ZSM-5. The effect of the composite catalyst on the product distribution and chemical composition in a co-pyrolysis downdraft system was investigated. In a down system with a catalytic temperature of 450 °C, a feed-to-catalyst ratio of 2:1, and a soybean-soapstock-to-straw ratio of 1:1, the proportions of alkanes, olefins, aromatics, and phenoxy compounds were 6.82%, 4.5%, 73.56% and 11.11%, respectively. The composite catalyst combined the catalytic performance of ZSM-5 and SiC, increasing the proportion of aromatics and decreasing the proportion of oxygen-containing compound in the bio-oil. Moreover, the composite catalyst maintained its activity after reusing several times.
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catalytic co pyrolysis of alternanthera philoxeroides and peanut soapstock via a new continuous fast microwave pyrolysis system
Waste Management, 2019Co-Authors: Lin Jiang, Yunpu Wang, Xiaojie Tian, Zihong Zeng, Shumei Zhang, Qiuhao Wu, Xiuhua Yang, Bo Zhang, Zhenting YuAbstract:Abstract Continuous fast microwave catalytic co-pyrolysis of Alternanthera philoxeroides and peanut soapstock was studied using HZSM-5 as catalyst. The effects of catalyst temperature, feedstock-to-catalyst ratio, and A. philoxeroides-to-peanut soapstock ratio on the yield and composition of bio-oil were studied. Experimental results showed that the optimum catalyst temperature was 400 °C. The catalyst increased the proportion of aromatics but reduced the bio-oil yield. The optimum feedstock-to-catalyst ratio was 2:1. A. philoxeroides presented a significant synergistic effect with peanut soapstock, which facilitated the production of aromatics in the bio-oil. The optimum A. philoxeroides-to-peanut soapstock ratio was 1:2.
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Ex-situ catalytic upgrading of vapors from fast microwave-assisted co-pyrolysis of Chromolaena odorata and soybean soapstock.
Bioresource Technology, 2018Co-Authors: Yunpu Wang, Zhang Shumei, Wu Qiuhao, Dengle Duan, Yuhuan Liu, Roger Ruan, Leilei Dai, Yue Zhou, Yunfeng Zhao, Zeng ZihongAbstract:Fast microwave-assisted catalytic co-pyrolysis of Chromolaena odorata (C. odorata) and soybean soapstock with HZSM-5 as an ex-situ catalyst was investigated. Effects of catalytic temperature, feedstock: catalyst ratio and C. odorata: soybean soapstock ratio on the yield and composition of the bio-oil were discussed. Results showed that catalytic temperature greatly influenced the bio-oil yield. Co-pyrolysis of C. odorata and soybean soapstock improved the bio-oil yield, and the maximum bio-oil yield of 55.14% was obtained at 250 °C. However, the addition of HZSM-5 decreased bio-oil yield but improved the quality of bio-oil. Moreover, the proportion of oxygen-containing compounds decreased dramatically with the addition of soybean soapstock. The C. odorata: soybean soapstock ratio of 1:2 and feedstock: catalyst ratio of 2:1 were the optimal condition to upgrade the bio-oil. In addition, the resulted biochar contained various essential elements and could be used as soil repair agent.
Leilei Dai - One of the best experts on this subject based on the ideXlab platform.
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conversion of soybean soapstock into hydrocarbon fuel by microwave assisted catalytic fast pyrolysis using mcm 41 hzsm 5 in a downdraft reactor
Chemical Engineering and Processing, 2020Co-Authors: Xiuhua Yang, Leilei Dai, Lin Jiang, Yunpu Wang, Xiaojie Tian, Zihong Zeng, Shumei Zhang, Yujie PengAbstract:Abstract Microwave-assisted catalytic pyrolysis of biomass is a promising technology to obtain hydrocarbon rich fuel oil. In consideration of this method, HZSM-5 is currently recognized as a catalyst with a good effect. However, given the small pore diameter and easy coking of HZSM-5, the catalytic upgrading of bio-oil is limited to a certain extent. In this study, MCM-41 and HZSM-5 were used for joint catalysis to explore the effect of catalytic temperature, the ratio of two catalysts, and the ratio of soybean soapstock and catalysts on the pyrolysis products. The optimal reaction conditions included the following: catalytic temperature, 400 °C; MCM-41/HZSM-5 ratio, 1:1; feedstock/catalyst ratio, 2:1. The results showed that MCM-41 could effectively alleviate the coking of HZSM-5, and the use of both catalysts reduced the bio-oil yield but effectively improved the selectivity of monocyclic aromatic hydrocarbons in bio-oil, thus increasing the value of bio-oil.
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Microwave-assisted pyrolysis of vegetable oil soapstock: Comparative study of rapeseed, sunflower, corn, soybean, rice, and peanut oil soapstock
International Journal of Agricultural and Biological Engineering, 2019Co-Authors: Wang Yunpu, Zhang Shumei, Wu Qiuhao, Dengle Duan, Yuhuan Liu, Roger Ruan, Leilei Dai, Lin JiangAbstract:In this study, the effects of catalytic temperature and the type of soapstock on products from microwave-assisted pyrolysis were investigated. HZSM-5 was used as the catalyst to study the pyrolysis of six different Soapstocks at 200°C, 300°C, and 400°C catalytic temperature. Results showed that the bio-oil yields initially increased and then decreased with the increase in catalytic temperature. When the catalytic temperature was 300°C, the bio-oil reached up to the maximum value (65.8 wt.%). Findings indicated that the composition of bio-oil was related to the degree of unsaturation of fatty acids sodium in the Soapstocks. In the case of saturated fatty acid sodium, a series of alkanes was formed, whereas the pyrolysis of monounsaturated fatty acid sodium resulted mainly in cycloalkanes, the cycloalkenes obtained from bio-oil was produced by polyunsaturated fatty acid sodium. Keywords: microwave pyrolysis vegetable oil soapstock, HZSM-5, bio-oil DOI: 10.25165/j.ijabe.20191206.4599 Citation: Wang Y P, Zhang S M, Wu Q H, Duan D L, Liu Y H, Ruan R, et al. Microwave-assisted pyrolysis of vegetable oil soapstock: Comparative study of rapeseed, sunflower, corn, soybean, rice, and peanut oil soapstock. Int J Agric & Biol Eng, 2019; 12(6): 202–208.
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co pyrolysis of biomass and soapstock in a downdraft reactor using a novel zsm 5 sic composite catalyst
Bioresource Technology, 2019Co-Authors: Lin Jiang, Yuhuan Liu, Leilei Dai, Yunpu Wang, Bo Zhang, Qi Yang, Sha Yang, Deyu Jiang, Roger RuanAbstract:Abstract A ZSM-5/SiC composite catalyst was synthesized and characterized by Brunauer–Emmett–Teller analysis, X-ray diffraction, and scanning electron microscopy in this study. The composite catalyst had the characteristics of ZSM-5 and SiC, and the surface of SiC grew evenly with a layer of ZSM-5. The effect of the composite catalyst on the product distribution and chemical composition in a co-pyrolysis downdraft system was investigated. In a down system with a catalytic temperature of 450 °C, a feed-to-catalyst ratio of 2:1, and a soybean-soapstock-to-straw ratio of 1:1, the proportions of alkanes, olefins, aromatics, and phenoxy compounds were 6.82%, 4.5%, 73.56% and 11.11%, respectively. The composite catalyst combined the catalytic performance of ZSM-5 and SiC, increasing the proportion of aromatics and decreasing the proportion of oxygen-containing compound in the bio-oil. Moreover, the composite catalyst maintained its activity after reusing several times.
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Ex-situ catalytic upgrading of vapors from fast microwave-assisted co-pyrolysis of Chromolaena odorata and soybean soapstock.
Bioresource Technology, 2018Co-Authors: Yunpu Wang, Zhang Shumei, Wu Qiuhao, Dengle Duan, Yuhuan Liu, Roger Ruan, Leilei Dai, Yue Zhou, Yunfeng Zhao, Zeng ZihongAbstract:Fast microwave-assisted catalytic co-pyrolysis of Chromolaena odorata (C. odorata) and soybean soapstock with HZSM-5 as an ex-situ catalyst was investigated. Effects of catalytic temperature, feedstock: catalyst ratio and C. odorata: soybean soapstock ratio on the yield and composition of the bio-oil were discussed. Results showed that catalytic temperature greatly influenced the bio-oil yield. Co-pyrolysis of C. odorata and soybean soapstock improved the bio-oil yield, and the maximum bio-oil yield of 55.14% was obtained at 250 °C. However, the addition of HZSM-5 decreased bio-oil yield but improved the quality of bio-oil. Moreover, the proportion of oxygen-containing compounds decreased dramatically with the addition of soybean soapstock. The C. odorata: soybean soapstock ratio of 1:2 and feedstock: catalyst ratio of 2:1 were the optimal condition to upgrade the bio-oil. In addition, the resulted biochar contained various essential elements and could be used as soil repair agent.
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microwave assisted catalytic fast co pyrolysis of soapstock and waste tire for bio oil production
Journal of Analytical and Applied Pyrolysis, 2017Co-Authors: Leilei Dai, Dengle Duan, Yuhuan Liu, Roger Ruan, Yunpu Wang, Yue Zhou, Liangliang Fan, Yunfeng ZhaoAbstract:Abstract Microwave-assisted catalytic fast co-pyrolysis using HZSM-5 as catalyst was tested on soapstock and waste tire. Effects of co-pyrolysis temperature, catalyst to feed ratio and soapstock to tire ratio on product fractional yields and chemical composition were studied. Experimental results indicated that the optimal co-pyrolysis temperature was 550 °C, where the highest yield of bio-oil and proportion of aromatics in the bio-oil was obtained. The use of catalyst enhanced the proportion of aromatics, but reduced the yield of bio-oil. Waste tire presented a significant synergistic effect with soapstock to facilitate the production of aromatics in the bio-oil. In addition, the char as a by-product can be used as soil amendment or solid fuel.
Yunfeng Zhao - One of the best experts on this subject based on the ideXlab platform.
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Ex-situ catalytic upgrading of vapors from fast microwave-assisted co-pyrolysis of Chromolaena odorata and soybean soapstock.
Bioresource Technology, 2018Co-Authors: Yunpu Wang, Zhang Shumei, Wu Qiuhao, Dengle Duan, Yuhuan Liu, Roger Ruan, Leilei Dai, Yue Zhou, Yunfeng Zhao, Zeng ZihongAbstract:Fast microwave-assisted catalytic co-pyrolysis of Chromolaena odorata (C. odorata) and soybean soapstock with HZSM-5 as an ex-situ catalyst was investigated. Effects of catalytic temperature, feedstock: catalyst ratio and C. odorata: soybean soapstock ratio on the yield and composition of the bio-oil were discussed. Results showed that catalytic temperature greatly influenced the bio-oil yield. Co-pyrolysis of C. odorata and soybean soapstock improved the bio-oil yield, and the maximum bio-oil yield of 55.14% was obtained at 250 °C. However, the addition of HZSM-5 decreased bio-oil yield but improved the quality of bio-oil. Moreover, the proportion of oxygen-containing compounds decreased dramatically with the addition of soybean soapstock. The C. odorata: soybean soapstock ratio of 1:2 and feedstock: catalyst ratio of 2:1 were the optimal condition to upgrade the bio-oil. In addition, the resulted biochar contained various essential elements and could be used as soil repair agent.
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microwave assisted catalytic fast co pyrolysis of soapstock and waste tire for bio oil production
Journal of Analytical and Applied Pyrolysis, 2017Co-Authors: Leilei Dai, Dengle Duan, Yuhuan Liu, Roger Ruan, Yunpu Wang, Yue Zhou, Liangliang Fan, Yunfeng ZhaoAbstract:Abstract Microwave-assisted catalytic fast co-pyrolysis using HZSM-5 as catalyst was tested on soapstock and waste tire. Effects of co-pyrolysis temperature, catalyst to feed ratio and soapstock to tire ratio on product fractional yields and chemical composition were studied. Experimental results indicated that the optimal co-pyrolysis temperature was 550 °C, where the highest yield of bio-oil and proportion of aromatics in the bio-oil was obtained. The use of catalyst enhanced the proportion of aromatics, but reduced the yield of bio-oil. Waste tire presented a significant synergistic effect with soapstock to facilitate the production of aromatics in the bio-oil. In addition, the char as a by-product can be used as soil amendment or solid fuel.
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Fast microwave-assisted catalytic co-pyrolysis of straw stalk and soapstock for bio-oil production
Journal of Analytical and Applied Pyrolysis, 2017Co-Authors: Yue Zhou, Dengle Duan, Yuhuan Liu, Roger Ruan, Leilei Dai, Yunpu Wang, Liangliang Fan, Yunfeng ZhaoAbstract:Abstract This study investigated the microwave-assisted catalytic fast pyrolysis (MACFP) of straw stalk and soapstock with HZSM-5 as a catalyst. The effects of pyrolysis temperature, catalyst:feed ratio, and straw stalk:soapstock ratio on bio-oil yield and composition were discussed. Results showed that temperature greatly influenced the yield and product distribution of bio-oil. The maximum bio-oil yield and highest proportion of aromatic hydrocarbons were obtained at 550 °C. Adding HZSM-5 decreased bio-oil yield but improved bio-oil quality. Co-feeding straw stalk and soapstock can improved the proportion of aromatic and aliphatic compounds. The optimal range of straw stalk:soapstock ratio was 1:1 to 1:2. Moreover, biochar is rich in various essential elements and can be used as good soil amendment.
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Production of bio-oil and biochar from soapstock via microwave-assisted co-catalytic fast pyrolysis.
Bioresource Technology, 2016Co-Authors: Leilei Dai, Yuhuan Liu, Roger Ruan, Yunpu Wang, Yue Zhou, Liangliang Fan, Yunfeng ZhaoAbstract:In this study, production of bio-oil and biochar from soapstock via microwave-assisted co-catalytic fast pyrolysis combining the advantages of in-situ and ex-situ catalysis was performed. The effects of catalyst and pyrolysis temperature on product fractional yields and bio-oil chemical compositions were investigated. From the perspective of bio-oil yield, the optimal pyrolysis temperature was 550°C. The use of catalysts reduced the water content, and the addition of bentonite increased the bio-oil yield. Up to 84.16wt.% selectivity of hydrocarbons in the bio-oil was obtained in the co-catalytic process. In addition, the co-catalytic process can reduce the proportion of oxygenates in the bio-oil to 15.84wt.% and eliminate the N-containing compounds completely. The addition of bentonite enhanced the BET surface area of bio-char. In addition, the bio-char removal efficiency of Cd2+ from soapstock pyrolysis in presence of bentonite was 27.4wt.% higher than without bentonite.
Yuhuan Liu - One of the best experts on this subject based on the ideXlab platform.
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Microwave-assisted pyrolysis of vegetable oil soapstock: Comparative study of rapeseed, sunflower, corn, soybean, rice, and peanut oil soapstock
International Journal of Agricultural and Biological Engineering, 2019Co-Authors: Wang Yunpu, Zhang Shumei, Wu Qiuhao, Dengle Duan, Yuhuan Liu, Roger Ruan, Leilei Dai, Lin JiangAbstract:In this study, the effects of catalytic temperature and the type of soapstock on products from microwave-assisted pyrolysis were investigated. HZSM-5 was used as the catalyst to study the pyrolysis of six different Soapstocks at 200°C, 300°C, and 400°C catalytic temperature. Results showed that the bio-oil yields initially increased and then decreased with the increase in catalytic temperature. When the catalytic temperature was 300°C, the bio-oil reached up to the maximum value (65.8 wt.%). Findings indicated that the composition of bio-oil was related to the degree of unsaturation of fatty acids sodium in the Soapstocks. In the case of saturated fatty acid sodium, a series of alkanes was formed, whereas the pyrolysis of monounsaturated fatty acid sodium resulted mainly in cycloalkanes, the cycloalkenes obtained from bio-oil was produced by polyunsaturated fatty acid sodium. Keywords: microwave pyrolysis vegetable oil soapstock, HZSM-5, bio-oil DOI: 10.25165/j.ijabe.20191206.4599 Citation: Wang Y P, Zhang S M, Wu Q H, Duan D L, Liu Y H, Ruan R, et al. Microwave-assisted pyrolysis of vegetable oil soapstock: Comparative study of rapeseed, sunflower, corn, soybean, rice, and peanut oil soapstock. Int J Agric & Biol Eng, 2019; 12(6): 202–208.
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co pyrolysis of biomass and soapstock in a downdraft reactor using a novel zsm 5 sic composite catalyst
Bioresource Technology, 2019Co-Authors: Lin Jiang, Yuhuan Liu, Leilei Dai, Yunpu Wang, Bo Zhang, Qi Yang, Sha Yang, Deyu Jiang, Roger RuanAbstract:Abstract A ZSM-5/SiC composite catalyst was synthesized and characterized by Brunauer–Emmett–Teller analysis, X-ray diffraction, and scanning electron microscopy in this study. The composite catalyst had the characteristics of ZSM-5 and SiC, and the surface of SiC grew evenly with a layer of ZSM-5. The effect of the composite catalyst on the product distribution and chemical composition in a co-pyrolysis downdraft system was investigated. In a down system with a catalytic temperature of 450 °C, a feed-to-catalyst ratio of 2:1, and a soybean-soapstock-to-straw ratio of 1:1, the proportions of alkanes, olefins, aromatics, and phenoxy compounds were 6.82%, 4.5%, 73.56% and 11.11%, respectively. The composite catalyst combined the catalytic performance of ZSM-5 and SiC, increasing the proportion of aromatics and decreasing the proportion of oxygen-containing compound in the bio-oil. Moreover, the composite catalyst maintained its activity after reusing several times.
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Ex-situ catalytic upgrading of vapors from fast microwave-assisted co-pyrolysis of Chromolaena odorata and soybean soapstock.
Bioresource Technology, 2018Co-Authors: Yunpu Wang, Zhang Shumei, Wu Qiuhao, Dengle Duan, Yuhuan Liu, Roger Ruan, Leilei Dai, Yue Zhou, Yunfeng Zhao, Zeng ZihongAbstract:Fast microwave-assisted catalytic co-pyrolysis of Chromolaena odorata (C. odorata) and soybean soapstock with HZSM-5 as an ex-situ catalyst was investigated. Effects of catalytic temperature, feedstock: catalyst ratio and C. odorata: soybean soapstock ratio on the yield and composition of the bio-oil were discussed. Results showed that catalytic temperature greatly influenced the bio-oil yield. Co-pyrolysis of C. odorata and soybean soapstock improved the bio-oil yield, and the maximum bio-oil yield of 55.14% was obtained at 250 °C. However, the addition of HZSM-5 decreased bio-oil yield but improved the quality of bio-oil. Moreover, the proportion of oxygen-containing compounds decreased dramatically with the addition of soybean soapstock. The C. odorata: soybean soapstock ratio of 1:2 and feedstock: catalyst ratio of 2:1 were the optimal condition to upgrade the bio-oil. In addition, the resulted biochar contained various essential elements and could be used as soil repair agent.
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microwave assisted catalytic fast co pyrolysis of soapstock and waste tire for bio oil production
Journal of Analytical and Applied Pyrolysis, 2017Co-Authors: Leilei Dai, Dengle Duan, Yuhuan Liu, Roger Ruan, Yunpu Wang, Yue Zhou, Liangliang Fan, Yunfeng ZhaoAbstract:Abstract Microwave-assisted catalytic fast co-pyrolysis using HZSM-5 as catalyst was tested on soapstock and waste tire. Effects of co-pyrolysis temperature, catalyst to feed ratio and soapstock to tire ratio on product fractional yields and chemical composition were studied. Experimental results indicated that the optimal co-pyrolysis temperature was 550 °C, where the highest yield of bio-oil and proportion of aromatics in the bio-oil was obtained. The use of catalyst enhanced the proportion of aromatics, but reduced the yield of bio-oil. Waste tire presented a significant synergistic effect with soapstock to facilitate the production of aromatics in the bio-oil. In addition, the char as a by-product can be used as soil amendment or solid fuel.
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production of hydrocarbon rich bio oil from soapstock via fast microwave assisted catalytic pyrolysis
Journal of Analytical and Applied Pyrolysis, 2017Co-Authors: Leilei Dai, Dengle Duan, Yuhuan Liu, Roger Ruan, Yunpu Wang, Yue Zhou, Liangliang Fan, Yuezhen Liu, Lin JiangAbstract:Abstract Fast microwave-assisted catalytic pyrolysis (fMACP) of soapstock for hydrocarbon-rich bio-oil using different catalysts was investigated in this study. Effects of catalyst, pyrolysis temperature and catalyst to feed ratio on product fractional yields and chemical composition were studied. Experimental results indicated that the use of catalyst increased the relative content of hydrocarbons and selectivity of aromatics. Moreover, HZSM-5 catalyst enhanced the bio-oil yield. When HZSM-5 zeolite was used as a catalyst, 600 °C was the optimal pyrolysis temperature, which provides the maximum bio-oil yield and high content of hydrocarbons. At the cost of the decrease of bio-oil yield, the increase of catalyst to feed ratio increased the relative content of hydrocarbons from 65.41% to 88.59% and selectivity of aromatics from 5.99% to 29.46%. In addition, the analytical results of bio-char show that bio-char with micropore structure and high contents of the essential plant nutrients and micronutrients can be used as a soil amendment to improve soil productivity.