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Study of the reaction mechanism for preparing powdered activated coke with SO_(2)adsorption capability via one-step rapid activation method under flue gas atmosphere

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Chinese Journal of Chemical Engineering 2024年第1期65卷 158-168页

作者： Binxuan Zhou Jingcai Chang Jun Li Jinglan Hong Tao Wang Liqiang Zhang Ping Zhou chunyuan ma School of Environmental Science and Engineering Shandong UniversityQingdao 266237China School of Energy and Power Engineering Shandong UniversityJinan 250061China Weihai Research Institute of Industrial Technology of Shandong University Weihai 264209China

In this study,the impact of different reaction times on the preparation of powdered activated carbon(PAC)using a one-step rapid activation method under flue gas atmosphere is investigated,and the underlying reaction mechanism is summarized.Results indicate that the reaction process of this method can be divided into three stages:stage I is the rapid release of volatiles and the rapid consumption of O_(2),primarily occurring within a reaction time range of 0-0.5 s;stage II is mainly the continuous release and diffusion of volatiles,which is the carbonization and activation coupling reaction stage,and the carbonization process is the main in this stage.This stage mainly occurs at the reaction time range of 0.5 -2.0 s when SL-coal is used as material,and that is 0.5-3.0 s when JJ-coal is used as material;stage III is mainly the activation stage,during which activated components diffuse to both the surface and interior of particles.This stage mainly involves the reaction stage of CO_(2)and H2O(g)activation,and it mainly occurs at the reaction time range of 2.0-4.0 s when SL-coal is used as material,and that is 3.0-4.0 s when JJ-coal is used as material.Besides,the main function of the first two stages is to provide more diffusion channels and contact surfaces/activation sites for the diffusion and activation of the activated components in the third stage.mastering the reaction mechanism would serve as a crucial reference and foundation for designing the structure,size of the reactor,and optimal positioning of the activator nozzle in PAC preparation.

关键词： Reaction mechanism Powdered activated coke preparation SO_(2)adsorption One-step rapid activation Flue gas atmosphere

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Identification of SSR markers linked to the abscission of cotton boll traits and mining germplasm in Cotton

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Journal of Cotton Research 2024年第2期7卷 177-187页

作者： SHUI Guangling LIN Hairong ma Xiaomei ZHU Bo HAN Peng AINI Nurimanguli GUO Chunping WU Yuanlong PAN Zhenyuan YOU chunyuan SONG Guoli NIE Xinhui Key Laboratory of Oasis Ecology Agricultural of Xinjiang Bingtuan Agricultural CollegeShihezi UniversityShiheziXinjiang 832003China Cotton Institute Xinjiang Academy of Agriculture and Reclamation ScienceShiheziXinjiang 832000China Agricultural Science Research Institute of the 5th Division of Xinjiang Production and Construction Corps ShuangheXinjiang 833408China Modern Agricultural College Kashi UniversityKashiXinjiang 844000China National Key Laboratory of Crop Genetic Improvement College of Plant Sciences&TechnologyHuazhong Agricultural UniversityWuhanHubei 430070China National Key Laboratory of Cotton Bio‑Breeding and Integrated Utilization Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangHenan 455000China

Background Cotton is an economically important crop.It is crucial to find an effective method to improve cotton yield,and one approach is to decrease the abscission of cotton bolls and buds.However,the lack of knowledge of the genetic and molecular mechanisms underlying cotton boll abscission traits has hindered genetic improvements.Results Pearson’s correlation analysis revealed a significant positive correlation between boll abscission rates 1(AR1)and boll abscission rates 2(AR2).A genome-wide association study was conducted on 145 loci that exhibited high polymorphism and were uniformly distributed across 26 chromosomes(pair).The study revealed 18,46,and 62 markers that were significantly associated with boll abscission,fiber quality,and yield traits(Pmarker MON_SHIN-1584b was associated with the cotton boll abscission trait,whereas MON_CGR5732a was associated with cotton boll abscission and fiber quality traits.Thirteen of the marker loci identified in this study had been previously reported.Based on phenotypic effects,six typical cultivars with elite alleles related to cotton boll abscission,fiber quality,and yield traits were identified.These cultivars hold great promise for widespread utilization in breeding programs.Conclusions These results lay the foundation for understanding the molecular regulatory mechanism of cotton boll abscission and provide data for the future improvement of cotton breeding.

关键词： SSR Genome wide association studies Abscission Favorable alleles Cotton Genetic improvement

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Systematic investigation of SO_(2) adsorption and desorption by porous powdered activated coke:Interaction between adsorption temperature and desorption energy consumption

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Chinese Journal of Chemical Engineering 2022年第8期35卷 140-148页

作者： Jun Li Liqiang Zhang Xiao Zhu Mengze Zhang Tai Feng Xiqiang Zhao Tao Wang Zhanlong Song chunyuan ma National Engineering Laboratory for Reducing Emissions from Coal Combustion Engineering Research Center of Environmental Thermal Technology of Ministry of EducationShandong Key Laboratory of Energy Carbon Reduction and Resource UtilizationSchool of Energy and Power EngineeringShandong UniversityJinan 250061China College of Mechanical and Electronic Engineering Shandong University of Science and TechnologyQingdao 266590China

Porous carbon materials have been widely used for the removal of SO_(2) from flue gas.The main objective of this work is to clarify the effects of adsorption temperature on SO_(2) adsorption and desorption energy consumption.Coal-based porous powdered activated coke(PPAC)prepared in the drop-tube reactor was used in this study.The N_(2) adsorption measurements and Fourier transform infrared spectrometer analysis show that PPAC exhibits a developed pore structure and rich functional groups.The experimental results show that with a decrease in adsorption temperature in the range of 50–150℃,the adsorption capacity of SO_(2) increases linearly;meanwhile,the adsorption capacity of H_(2)O increases,resulting in the increase in desorption energy consumption per unit mass of adsorbent.The processes of SO_(2) and H_(2)O desorption were determined by the temperature-programmed desorption test,and the desorption energies for each species were calculated.Considering the energy consumption per unit of desorption and the total amount of adsorbent,the optimal adsorption temperature yielding the minimum total energy consumption of regeneration is calculated.This study systematically demonstrates the effect of adsorption temperature on the adsorption–desorption process,providing a basis for energy saving and emission reduction in desulfurization system design.

关键词： Activated coke SO2 adsorption Desorption energy consumption Optimal adsorption temperature

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Identification of new cotton fiber-quality QTL by multiple genomic analyses and development of markers for genomic breeding

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The Crop Journal 2024年第3期12卷 866-879页

作者： Haozhe Tan Binghui Tang Mengling Sun Qiulu Yin Yizan ma Jianying Li Pengcheng Wang Zhonghua Li Guannan Zhao maojun Wang Xianlong Zhang chunyuan You Lili Tu National Key Laboratory of Crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070HubeiChina Cotton Research Institute Shihezi Academy of Agriculture ScienceShihezi 832000XinjiangChina

Cotton fiber is one of the main raw materials for the textile industry.In recent years,many cotton fiber quality QTL have been identified,but few were applied in breeding.In this study,a genome wide association study(GWAS)of fiber-quality traits in 265 upland cotton breeding intermediate lines(GhBreeding),combined with genome-wide selective sweep analysis(GSSA)and genomic selection(GS),revealed 25 QTL.Most of these QTL were ignored by only using GWAS.The CRISPR/Cas9 mutants of GhMYB_D13 had shorter fiber,which indicates the credibility of QTL to a certain extent.Then these QTL were verified in other cotton natural populations,5 stable QTL were found having broad potential for application in breeding.Additionally,among these 5 stable QTL,superior genotypes of 4 showed an enrichment in most improved new varieties widely cultivated currently.These findings provide insights for how to identify more QTL through combined multiple genomic analysis to apply in breeding.

关键词： Cotton fiber quality breeding GWAS Genome-wide selective sweep analysis Genomic selection InDel markers

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Kinetics of Solvent Blue and Reactive Yellow removal using microwave radiation in combination with nanoscale zero-valent iron

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Journal of Environmental Sciences 2015年第4期27卷 164-172页

作者： Yanpeng mao Zhenqian Xi Wenlong Wang chunyuan ma Qinyan Yue School of Energy and Power Engineering Shandong University School of Environmental Science and Engineering Shandong University

We investigated the efficiency and kinetics of the degradation of soluble dyes over the p H range 5.0–9.0 using a method employing microwave radiation in combination with nanoscale zero-valent iron（MW–n ZVI）. The n ZVI particles（40–70 nm in diameter） were prepared by a liquid-phase chemical reduction method employing starch as a dispersant.Compared to the removal of Solvent Blue 36 and Reactive Yellow K-RN using only n ZVI,more rapid and efficient dye removal and total organic carbon removal were achieved using MW–n ZVI. The dye removal efficiency increased significantly with decreasing p H, but was negligibly affected by variation in the microwave power. The kinetics of dye removal by MW–n ZVI followed both an empirical equation and the pseudo first-order model, while the kinetics of dye removal using n ZVI could only be described by an empirical equation. It was also concluded that microwave heating of the dye solutions as well as acceleration of corrosion of n ZVI and consumption of Fe（II） were possible reasons behind the enhanced dye degradation.

关键词： Microwave n ZVI Dye Efficiency Kinetics

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相位恢复的蒙日-安培方程与迭代角谱复合型方法

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激光与光电子学进展 2024年第5期61卷 245-252页

作者：马骁陈椿元冯泽心北京理工大学光电学院北京市混合现实与新型显示工程技术研究中心北京100081

融合几何光学的蒙日-安培方程方法和物理光学的迭代角谱算法,提出了一种复合型相位恢复方法。针对迭代角谱算法高度依赖初始值的问题,将蒙日-安培方程的解作为迭代初值,该初值通常比光强传输方程的解更准确。采用传统迭代角谱算法与混... 详细信息

融合几何光学的蒙日-安培方程方法和物理光学的迭代角谱算法,提出了一种复合型相位恢复方法。针对迭代角谱算法高度依赖初始值的问题,将蒙日-安培方程的解作为迭代初值,该初值通常比光强传输方程的解更准确。采用传统迭代角谱算法与混合输入输出算法的交替迭代策略,以避免算法过早陷入局部最优和迭代停滞。通过数值计算与仿真验证了所提复合型算法的优越性。

关键词：相位测量相位恢复蒙日-安培方程迭代角谱算法光强传输方程

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Study on sulfur migration in activated carbon adsorption-desorption cycle: Effect of alkali/alkaline earth metals

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Journal of Environmental Sciences 2021年第1期33卷 119-129页

作者： Jun Li Liqiang Zhang Tao Wang Jingcai Chang Zhanlong Song chunyuan ma National Engineering Laboratory for Reducing Emissions from Coal Combustion Engineering Research Center of Eruironmental Thermal Technology of Ministry of EducationShandong Key Laboratory of Energy Carbon Reduction and Resource UtilizationSchool of Energy and Power EngineeringShandong UniversityJinan 250061China School of Environmental Science and Engineering Shandong UniversityQingdao 266237China

Activated carbon(AC)has been widely used in the removal of SO_(2) from flue gas owing to its well-developed pore structure and abundant functional groups.Herein,the effect of alkali/alkaline earth metals on sulfur migration was investigated based on the dynamic adsorption and temperature programmed desorption experiment.The adsorption and desorption properties of six types of AC(three commercial and three laboratory-made)were carried out on a fixed-bed experimental device,and the physical and chemical properties of samples were determined by X-ray fluorescence,X-ray diffraction,scanning electron microscopy/energy dispersive X-ray,and X-ray photoelectron spectroscopy analysis.The experimental results showed that the adsorbed SO_(2) cannot be completely desorbed by increasing the regeneration temperature(350-850℃),while the SO_(2) fixed in the AC combines with the Ca-based minerals in the ash to form a stable sulfate.For different samples,higher ash content,higher CaO content in the ash and a more developed pore structure lead to a higher SO_(2) fixation rate.Moreover,the multiple adsorption-desorption cycles experiment showed that the effect of SO_(2) fixation is mainly reflected in the first cycle,after which the adsorption and desorption amount are approximately the same.This study elucidates the effect of alkali/alkaline earth metals on the adsorption-desorption cycle of AC,which provides a deeper understanding of sulfur migration in the AC flue gas desulfurization process.

关键词： Activated carbon Alkali/alkaline earth metals Sulfur migration Adsorption-desorption cycle So2 fixation

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Correction:Identification of SSR markers linked to the abscission of cotton boll traits and mining germplasm in Cotton

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Journal of Cotton Research 2024年第2期7卷 219-222页

作者： SHUI Guangling LIN Hairong ma Xiaomei ZHU Bo HAN Peng AINI Nurimanguli GUO Chunping WU Yuanlong PAN Zhenyuan YOU chunyuan SONG Guoli NIE Xinhui Key Laboratory of Oasis Ecology Agricultural of Xinjiang Bingtuan Agricultural CollegeShihezi UniversityShiheziXinjiang 832003China Cotton Institute Xinjiang Academy of Agriculture and Reclamation ScienceShiheziXinjiang 832000China Agricultural Science Research Institute of the 5 Division of Xinjiang Production and Construction CorpsShuangheXinjiang 833408China Modern Agricultural College Kashi UniversityKashiXinjiang 844000China National Key Laboratory of Crop Genetic Improvement College of Plant Sciences&TechnologyHuazhong Agricultural UniversityWuhanHubei 430070China National Key Laboratory of Cotton Bio‑Breeding and Integrated Utilization Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangHenan 455000China

Correction:J Cotton Res 7,20(2024)https://***/10.1186/s42397-024-00180-3 Following publication of the original article(Shui et al.2024),the author found 5 errors in the published article.1.One of the author’s name has been corrected from Gou Chunping to Guo Chunping.2.The reference(Zhao SQ.2016)in Table 2 has been updated to:Zhao SQ.Analysis on the major gene and multigene mixed inheritance and QTL mapping for early maturity traits in upland cotton.Chin Acad Agric Sci.***.https://***/10.3969/j.issn.201600501.(in Chinese with English abstract).3.In’Results’part,’Phenotype analysis of 238 cotton boll abscission among cotton accessions’paragraph,the phenotype analysis of AR1 ranging from 19.27%–63.79%,which was wrongly written as 19.27%-63.97%.4.The‘2018KRL’is modified to‘2018KEL’in Table 1.

关键词： germplasm traits cotton

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Optimization of process parameters for preparation of powdered activated coke to achieve maximum SO_(2)adsorption using response surface methodology

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Frontiers in Energy 2021年第1期15卷 159-169页

作者： Binxuan ZHOU Tao WANG Tianming XU Cheng LI Yuan ZHAO Jiapeng FU Zhen ZHANG Zhanlong SONG chunyuan ma National Engineering Laboratory for Reducing Emissions from Coal Combustion Engineering Research Center of Environmental Thermal Technology of the Ministry of Education Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization School of Energy and Power Engineering Shandong UniversityJinan 250061China School of Electric Power North China University of Water Resources and Electric PowerZhengzhou 450045China

Powdered activated coke(PAC)is a good adsorbent of SO_(2),but its adsorption capacity is affected by many factors in the preparation process.To prepare the PAC with a high SO_(2)adsorption capacity using JJ-coal under flue gas atmosphere,six parameters(oxygen-coal equivalent ratio,reaction temperature,reaction time,O_(2)concentration,CO_(2)concentration,and H_(2)O concentration)were screened and optimized using the response surface methodology(RSM).The results of factor screening experiment show that reaction temperature,O_(2)concentration,and H_(2)O(g)concentration are the significant factors.Then,a quadratic polynomial regression model between the significant factors and SO_(2)adsorption capacity was established using the central composite design(CCD).The model optimization results indicate that when reaction temperature is 904.74℃,O_(2)concentration is 4.67%,H_(2)O concentration is 27.98%,the PAC(PAC-OP)prepared had a higher SO_(2)adsorption capacity of 68.15 mg/g while its SO_(2)adsorption capacity from a validation experiment is 68.82 mg/g,and the error with the optimal value is 0.98%.Compared to two typical commercial activated cokes(ACs),PAC-OP has relatively more developed pore structures,and its SBET and Vtot are 349 m^(2)/g and 0.1475 cm3/g,significantly higher than the 186 m^(2)/g and 0.1041 cm3/g of AC1,and the 132 m^(2)/g and 0.0768 cm3/g of AC2.Besides,it also has abundant oxygen-containing functional groups,its surface O content being 12.09%,higher than the 10.42%of AC1 and 10.49%of AC2.Inevitably,the SO_(2)adsorption capacity of PAC-OP is also significantly higher than that of both AC1 and AC2,which is 68.82 mg/g versus 32.53 mg/g and 24.79 mg/g,respectively.

关键词： powdered activated coke(PAC) S0_(2)adsorption capacity parameters optimization response surface methodology

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浅埋深线圈瞬变电磁场超前探测响应及应用

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中国安全科学学报 2024年第5期34卷 75-81页

作者：王春源张桓马洪亮梁庆华青岛理工大学机械与汽车工程学院山东青岛266520 中国职业安全健康协会北京100029

为有效识别隧道工作面前方采空区、岩溶、导水裂隙带等不良地质情况,预防隧道开挖透水事故,开展浅埋深线圈瞬变电磁理论在隧道超前探测中应用的研究。首先,利用COMSOL软件建立浅埋深线圈超前探测模型,研究工作面前方不同方位电磁场的传... 详细信息

为有效识别隧道工作面前方采空区、岩溶、导水裂隙带等不良地质情况,预防隧道开挖透水事故,开展浅埋深线圈瞬变电磁理论在隧道超前探测中应用的研究。首先,利用COMSOL软件建立浅埋深线圈超前探测模型,研究工作面前方不同方位电磁场的传播特性和异常响应特征;然后,以青岛地铁13号线嘉陵江路站-香江路站区间隧道工程为例,验证浅埋深线圈瞬变电磁法识别异常体的可行性。结果表明:浅埋深瞬变电磁法可有效识别工作面前方不同位置的低阻异常体;不同方位异常体对于电场响应的影响主要体现在响应强度上;瞬变电磁场可有效区别出空气域和岩体域,但受空气域的影响,电磁场在近地表的高阻围岩中衰减速度加快,导致在反演分析中实际探测工作存在高阻异常。

关键词：浅埋深线圈瞬变电磁场超前探测工作面低阻异常体隧道施工

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