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Xie Y, Wang J, Hu Y, Zhang J, Zhang Q, Men M, Wang S, Li Z, Liu G, Mi A. Corrosion and Contamination of 316L Stainless Steel in Simulated HNO 3-Based Spent Nuclear Fuel Reprocessing Environments with Cesium and Strontium. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yupeng Xie
- Shaanxi Engineering Research Center of Advanced Nuclear Energy & Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology & School of Nuclear Science and Technology & School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Jie Wang
- Shaanxi Engineering Research Center of Advanced Nuclear Energy & Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology & School of Nuclear Science and Technology & School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Yaocheng Hu
- Shaanxi Engineering Research Center of Advanced Nuclear Energy & Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology & School of Nuclear Science and Technology & School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Jing Zhang
- Shaanxi Engineering Research Center of Advanced Nuclear Energy & Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology & School of Nuclear Science and Technology & School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Qian Zhang
- Shaanxi Engineering Research Center of Advanced Nuclear Energy & Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology & School of Nuclear Science and Technology & School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Meng Men
- Shaanxi Radiation Environment Supervision and Management Station, Xi’an, Shaanxi 710049, China
| | - Sheng Wang
- Shaanxi Engineering Research Center of Advanced Nuclear Energy & Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology & School of Nuclear Science and Technology & School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China
| | - Zhifeng Li
- China Nuclear Power Technology Research Institute Co., Ltd., Shenzhen, Guangdong 518026, China
| | - Guoming Liu
- China Nuclear Power Engineering Co., Ltd., Beijing 100840, China
| | - Aijun Mi
- China Nuclear Power Engineering Co., Ltd., Beijing 100840, China
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Cui B, Chen Z, Guo D, Liu Y. Investigations on the pyrolysis of microalgal-bacterial granular sludge: Products, kinetics, and potential mechanisms. BIORESOURCE TECHNOLOGY 2022; 349:126328. [PMID: 34780909 DOI: 10.1016/j.biortech.2021.126328] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/03/2021] [Accepted: 11/09/2021] [Indexed: 06/13/2023]
Abstract
This study investigated the pyrolysis of microalgal-bacterial granular sludge for producing bio-oil and biochar. Results showed that the bio-oil productivity of pyrolyzed MBGS reached 39.5-45.4 wt%, while 23.8-41.2% for the nitrogen-containing bio-oil at the temperature of 673-1073 K. Meanwhile the biochar with a nitrogen content of 3.7-7.0 wt% could also be produced. Moreover, the Van-Krevelen diagram revealed that produced bio-oil had a H/C ratio higher than that from agroforestry biomass, but its O/C ratio was found to be similar to those of coal and biochar. It further appeared from a mass conservation analysis that the highest bio-oil production yield was achieved at a pyrolysis temperature of 773 K, while the pyrolytic kinetics of MBGS in the temperature range studied was governed by the 3-D diffusion mechanism with the activation energy of 224.96 kJ·mol-1.
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Affiliation(s)
- Baihui Cui
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhihua Chen
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Xinxiang 453007, China
| | - Dabin Guo
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
| | - Yu Liu
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore.
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Luo W, Wang T, Zhang S, Zhang D, Dong H, Song M, Zhou Z. Catalytic co-pyrolysis of herb residue and polypropylene for pyrolysis products upgrading and diversification using nickel-X/biochar and ZSM-5 (X = iron, cobalt, copper). BIORESOURCE TECHNOLOGY 2022; 349:126845. [PMID: 35158035 DOI: 10.1016/j.biortech.2022.126845] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
It is very important to find cheap and efficient catalysts for catalytic co-pyrolysis. Catalytic co-pyrolysis of herb residue (HR) and reused polypropylene (PP) using Ni-X/biochar and ZSM-5 (X = Fe, Co, Cu) was performed to produce pyrolysis oil, pyrolysis gas and carbon nanotubes (CNTs) in a two-stage fixed bed reactor. Bimetallic biochar catalysts exhibited higher catalytic activity due to their higher specific surface area (SBET) and more strong acid sites. NiCu/biochar significantly increased the yield of pyrolysis oil by enhancing Fischer-Tropsch synthesis. In addition, the stronger secondary cracking capacity of NiCu/biochar resulted in the highest content of hydrocarbons (80.47%) and C6-C11(61.10%), while the availability of higher content of carbon source gas also facilitated the formation of CNTs and H2 at back-end. The cheap and efficient NiCu/biochar catalyst has great potential in the application of catalytic pyrolysis, which is conducive to the large-scale promotion of biomass pyrolysis technology.
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Affiliation(s)
- Wei Luo
- Powder Metallurgy Research Institute, Central South University, Changsha 410083, PR China; School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, PR China
| | - Tao Wang
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, PR China
| | - Siyan Zhang
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, PR China
| | - Dongyu Zhang
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, PR China
| | - Hang Dong
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, PR China
| | - Min Song
- Powder Metallurgy Research Institute, Central South University, Changsha 410083, PR China
| | - Zhi Zhou
- School of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, PR China.
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Thermal Conversion of Sugarcane Bagasse Coupled with Vapor Phase Hydrotreatment over Nickel-Based Catalysts: A Comprehensive Characterization of Upgraded Products. Catalysts 2022. [DOI: 10.3390/catal12040355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In the present work, we compared the chemical profile of the organic compounds produced in non-catalytic pyrolysis of sugarcane bagasse at 500 °C with those obtained by the in-line catalytic upgrading of the vapor phase at 350 °C. The influence over the chemical profile was evaluated by testing two Ni-based catalysts employing an inert atmosphere (N2) and a reactive atmosphere (H2) under atmospheric pressure with yields of the liquid phase varying from 55 to 62%. Major changes in the chemical profile were evidenced in the process under the H2 atmosphere, wherein a higher degree of deoxygenation was identified due to the effect of synergistic action between the catalyst and H2. The organic fraction of the liquid phase, called bio-oil, showed an increase in the relative content of alcohols and phenolic compounds in the GC/MS fingerprint after the upgrading process, corroborating with the action of the catalytic process upon the compounds derived from sugar and carboxylic acids. Thus, the thermal conversion of sugarcane bagasse, in a process under an H2 atmosphere and the presence of Ni-based catalysts, promoted higher deoxygenation performance of the pyrolytic vapors, acting mainly through sugar dehydration reactions. Therefore, the adoption of this process can potentialize the use of this waste biomass to produce a bio-oil with higher content of phenolic species, which have a wide range of applications in the energy and industrial sectors.
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Experimental and Numerical Analysis of a Low Environmental Impact Pyro-Gasification System for the Energetic Valorization of Waste through a Biomass Steam Power Plant. Processes (Basel) 2020. [DOI: 10.3390/pr9010035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This paper addresses the study of a pyro-gasification plant designed, built, and operated to recover inert metals from different types of solid waste. Experimental tests were carried out using pulper as the solid waste. However, while a reliable composition analysis of the produced syngas was carried out, a precise composition evaluation of the pulper used during the experimental activities was not performed and the related data were characterized by unacceptable uncertainty. Therefore, with the aim of reliably characterizing the plant operation, a thermochemical model of the gasification process was setup to simulate the equilibrium operation of the plant and a vector optimization methodology was used to calibrate the numerical model. Then, a decision-making problem was solved to identify the most suitable optimal solution between those belonging to the Pareto optimal front, thus obtaining reliable composition data for the adopted pulper waste. In particular, four different identification criteria were applied for the selection of small subset of solutions over the 3138 dominant solutions found. Among them, the solution (i.e., set of calibration parameters) that minimizes the experimental-numerical difference between the lower heating value of the produced syngas seemed to provide the most reliable approximation of the real plant operation. Finally, a possible plant configuration is proposed for the energetic valorization of the pulper waste and its overall conversion process efficiency is estimated.
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