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FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING 2024年第8期18卷 85-0页

作者： Xian, Xiaoling Li, Biying Feng, Shiyong Huang, Jiale Fu, Xinyuan Wu, Ting lin, xiaoqing Guangdong Univ Technol Sch Chem Engn & Light Ind Guangdong Prov Key Lab Plant Resources Biorefinery Guangzhou 510006 Peoples R China

In the present study, a sustainable pretreatment methodology combining liquid hot water and deep eutectic solvent is proposed for the efficient fractionation of hemicellulose, cellulose, and lignin from sugarcane bagasse, thereby facilitating the comprehensive utilization of both C5 and C6 sugars. The application of this combined pretreatment strategy to sugarcane bagasse led to notable enhancements in enzymatic saccharification and subsequent fermentation. Experiment results demonstrate that liquid hot water-deep eutectic solvent pretreatment yielded 85.05 +/- 0.66 gL-1 of total fermentable sugar (glucose: 60.96 +/- 0.21 gL-1, xylose: 24.09 +/- 0.87 gL-1) through enzymatic saccharification of sugarcane bagasse. Furthermore, fermentation of the pretreated sugarcane bagasse hydrolysate yielded 34.33 +/- 3.15 gL-1 of bioethanol. These findings confirm the effectiveness of liquid hot water-deep eutectic solvent pretreatment in separating lignocellulosic components, thus presenting a sustainable and promising pretreatment method for maximizing the valuable utilization of biomass resources.

关键词： sugar cane bagasse synergistic pretreatment enzymatic saccharification ethanol PSEUDO-LIGNIN FORMATION CANE BAGASSE BIOFUELS

Effect of different operation conditions on PCDD/F inhibition by ammonium dihydrogen phosphate:concentrations,distributions and mechanisms

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Waste Disposal and Sustainable Energy 2024年第1期6卷 11-23页

作者： Jiayao Wu Weican Xiang Xiaoxiao Wang Wenlong Song Yuxuan Ying xiaoqing lin Xiaodong Li State Key Laboratory of Clean Energy Utilization National Engineering Laboratory of Waste Incineration Technology and EquipmentInstitute of Thermal Power Engineering of Zhejiang UniversityHangzhou310027ZhejiangChina

Phosphorus-containing compounds are considered as the potential alternatives of traditional inhibitors for suppressing the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans(PCDD/Fs),but the suppression characteristics are scarcely *** this study,ammonium dihydrogen phosphate(ADP)was selected as the inhibitor to inhibit the PCDD/F formation via de novo synthesis at 350℃.The influence of oxygen content and addition method on PCDD/F inhibition was systematically investigated by means of statistical analysis and morphological *** results showed that oxygen enhanced the formation of PCDD/Fs from 1470 ng g^(−1)(9.78 ng I-TEQ g^(−1))to 2110 ng g^(−1)(14.8 ng I-TEQ g^(−1)).ADP significantly inhibited the PCDD/F formation,with inhibition efficiencies ranging from 82.0%to 97.7%.Herein,a higher oxygen content and the premixed way intensified the suppression ***-p-dioxin(DD)/dibenzofuran(DF)chlorination was proven to be effectively suppressed while chlorophenol(CP)route was not obviously *** the addition of ADP,Cl source was significantly reduced and the formation of organic Cl was effectively ***,it decreased the proportion of C–O/C=N and C=O,revealing the efficient inhibition of carbon ***,the formation of copper phosphate and copper pyrophosphate was observed in XPS(X-ray photoelectron spectroscopy)spectra,indicating that the catalytic metal Cu was chelated and passivated by *** premixed way had a better effect on reducing Cl resources,inhibiting oxidation and chelating metals,due to the direct contact with ***,the separation method could only depend on the decomposed gases,resulting in a lower inhibition efficiency.

关键词： Ammonium dihydrogen phosphate Polychlorinated dibenzo-p-dioxins and dibenzofuran inhibition Oxygen content Adding way Mechanisms

碳纳米管复合生物油改性沥青流变性能和抗老化性能综合评估

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福建建设科技 2024年第3期 62-66页

作者：林小青福建省建筑科学研究院有限责任公司福建省绿色建筑技术重点实验室福建福州350108

本文利用碳纳米管(CNT)来增强生物沥青(废弃餐饮油、秸秆油)的高温性能,弥补生物油沥青高温性能不足的局限性。采用温度扫描、线性振幅扫描、弯曲梁流变等高低温流变试验分析了不同碳纳米管掺量对生物油沥青高温敏感性和低温抗裂能力的... 详细信息

本文利用碳纳米管(CNT)来增强生物沥青(废弃餐饮油、秸秆油)的高温性能,弥补生物油沥青高温性能不足的局限性。采用温度扫描、线性振幅扫描、弯曲梁流变等高低温流变试验分析了不同碳纳米管掺量对生物油沥青高温敏感性和低温抗裂能力的影响。最后通过紫外吸收试验和红外光谱试验评价了复合改性沥青的抗紫外老化性能。结果发现,碳纳米管可以显著提高生物油的高温敏感性,并保持出色的流变性能,其中对于秸秆油改善效果更佳;碳纳米管使得生物油沥青具备较强的抗紫外老化能力,让其更能够适用复杂的服役条件。

关键词：改性沥青碳纳米材料生物油流变性能抗老化性能

门诊陪诊的岗前体验式教学对实习护生共情能力的影响

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天津护理 2024年第4期32卷 465-466页

作者：蔺小清重庆医科大学附属第二医院重庆400010

目的:探讨门诊陪诊的岗前体验式教学对实习护生共情能力的影响。方法:对109名实习护生进行门诊陪诊岗前体验式教学。培训前后采用中文版杰弗逊共情量表进行问卷调查。结果:实施门诊陪诊的岗前体验式教学后,实习护生共情能力总分及3个维... 详细信息

目的:探讨门诊陪诊的岗前体验式教学对实习护生共情能力的影响。方法:对109名实习护生进行门诊陪诊岗前体验式教学。培训前后采用中文版杰弗逊共情量表进行问卷调查。结果:实施门诊陪诊的岗前体验式教学后,实习护生共情能力总分及3个维度得分均高于培训前(P<0.05)。结论:对实习护生进行门诊陪诊的岗前体验式教学能有效提高实习护生的共情能力,有助于实习护生切身感受患者就医需求和心境,正确认识护患关系,规范专业行为,促进医患和谐关系。

关键词：实习护生体验式教学全程陪诊共情能力

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高龄孕妇并发妊娠期糖尿病的影响因素分析

糖尿病新世界 2024年第12期27卷 28-30,34页

作者：林小清蔡玉容何艺娟漳浦县妇幼保健院妇产科福建漳州363200 漳浦县妇幼保健院检验科福建漳州363200

目的探讨高龄孕妇并发妊娠期糖尿病的影响因素。方法回顾性选取2022年5月—2024年2月漳浦县妇幼保健院收治的40例高龄妊娠期糖尿病患者的临床资料(妊娠糖尿病组)以及40名高龄正常妊娠产检者的临床资料(无妊娠期糖尿病组)。比较两组孕期... 详细信息

目的探讨高龄孕妇并发妊娠期糖尿病的影响因素。方法回顾性选取2022年5月—2024年2月漳浦县妇幼保健院收治的40例高龄妊娠期糖尿病患者的临床资料(妊娠糖尿病组)以及40名高龄正常妊娠产检者的临床资料(无妊娠期糖尿病组)。比较两组孕期增重情况、孕前体重指数以及初产妇、每日睡眠>8 h、糖尿病家族史、孕期糖尿病史、慢性失眠、喜甜食、日运动量>1 h/d的比例,并针对以上指标进行多因素Logistic回归分析,明确影响高龄孕妇发生妊娠期糖尿病的独立危险因素与保护因素。结果妊娠期糖尿病组的孕期增重、孕前体重指数高于无妊娠期糖尿病组,孕期糖尿病史、慢性失眠及喜甜食的比例高于无妊娠期糖尿病组,日运动量>1 h/d的比例低于无妊娠期糖尿病组,差异有统计学意义(P均20 kg、孕前体重指数>24 kg/m^(2)、慢性失眠以及喜甜食为影响高龄孕妇发生妊娠期糖尿病的危险因素,日运动量>1 h/d为高龄孕妇发生妊娠期糖尿病的保护因素。结论对于孕期增重>20 kg、孕前体重指数>24 kg/m^(2)、慢性失眠及喜甜食的高龄孕妇,其发生妊娠期糖尿病的风险更高,建议适当增加每日运动量进行预防。

关键词：高龄孕妇并发妊娠期糖尿病孕期增重孕前体重指数慢性失眠日运动量

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Emission control and phase migration of PCDD/Fs in a rotary kiln incinerator:hazardous vs medical waste incineration

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Waste Disposal and Sustainable Energy 2023年第3期5卷 395-406页

作者： Ying Peng Yunfeng Ma xiaoqing lin Jisheng Long Xiaodong Li State Key Laboratory for Clean Energy Utilization Institute for Thermal Power EngineeringZhejiang UniversityHangzhou310027China Shanghai SUS ENVIRONMENT Co. LTDShanghai201703China

This study was carried out in a full-scale(50 t/d)rotary kiln incinerator to explore the removal characteristics of polychlorinated dibenzo-p-dioxins and dibenzofurans(PCDD/Fs)by different units of air pollution control devices(APCDs),and special interest was focused on the“memory effect”phenomenon of PCDD/Fs in the wet scrubber(WS),which usually caused an undesirable rise in PCDD/F emission *** general removal efficiency of PCDD/Fs by APCDs was 99.4%(from 14.11 at exhaust heat boiler(EHB)outlet to 0.09 ng I-TEQ/Nm^(3)at stack)under medical waste(MW)incineration condition,and 99.2%(from 19.91 to 0.16 ng I-TEQ/Nm^(3))under hazardous waste(HW)incineration *** PCDD/F concentrations in flue gas decreased along the APCDs except for WS,in which the“memory effect”was *** detail,WS largely increased the I-TEQ concentration of gas-phase PCDD/Fs from 0.047 to 0.188 ng I-TEQ/Nm^(3)in the flue gas,and the concentration of particulate-phase PCDD/Fs increased from 0.003 to 0.030 ng I-TEQ/Nm^(3).In addition,this study found that phase migration promoted the accumulation of PCDD/Fs in scrubbing water,and the flow entrainment phenomenon played a great role in causing the“memory effect”.The PCDD/F concentrations of fly ash collected from cyclone and fabric filter(FF)were as high as 4.23 and 6.99 ng I-TEQ/g,respectively,which had exceeded the national landfill limitation(3 ng I-TEQ/g)in *** system balance calculations revealed that APCDs promoted the migration of PCDD/Fs from the gas-phase to the particulate-phase,which caused fly ash to be the main carrier of PCDD/Fs and led to excessive *** results of this study can contribute to the optimized design of combustion conditions and system cleaning for controlling PCDD/F emissions from rotary kiln incinerators.

关键词： Air pollution control devices Wet scrubber Removal efficiency Memory effect Phase migration

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基于OBE理念的开放实验教学模式研究

办公自动化 2024年第4期29卷 49-51页

作者：王军红朱辉蔺小清陕西国际商贸学院咸阳712046 武功县长宁镇河道九年制学校咸阳712202

综合剖析虚拟仿真类开放实验教学存在的种种问题,给出以OBE理念为基础的仿真类开放实验教学模式,并从三个层面开展对应的教学研究,这几个方面分别为:打造“基础-设计-创新”相关实验教学流程;促使这种仿真型实验教学能够真正实现项目化... 详细信息

综合剖析虚拟仿真类开放实验教学存在的种种问题,给出以OBE理念为基础的仿真类开放实验教学模式,并从三个层面开展对应的教学研究,这几个方面分别为:打造“基础-设计-创新”相关实验教学流程;促使这种仿真型实验教学能够真正实现项目化管理;推出“自评-互评-总评”立体化实验成绩考核模式。并分析了基于OBE理念的开放实验教学模式可解决的主要问题,梳理了该模式下教学工作开展流程,以期完善开放实验教学模式。

关键词： OBE理念开放实验教学模式

Review of low-temperature plasma nitrogen fixation technology

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Waste Disposal and Sustainable Energy 2021年第3期3卷 201-217页

作者： Hang Chen Dingkun Yuan Angjian Wu xiaoqing lin Xiaodong Li State Key Laboratory of Clean Energy Utilization Department of Energy EngineeringZhejiang UniversityHangzhou 310027China College of Metrology and Measurement Engineering China Jiliang UniversityHangzhou 310018China

Nitrogen fixation is essential for all forms of life,as nitrogen is required to biosynthesize fundamental building blocks of creatures,plants,and other life *** the main method of artificial nitrogen fixation,Haber–Bosch process(ammonia synthesis)has been supporting the agriculture and chemical industries since the ***,the disadvantages inherent to the Haber–Bosch process,such as high energy consumption and high emissions,cannot be ***,developing a green nitrogen fixation process has always been a research *** the various technologies,plasma-assisted nitrogen fixation technology is very promising due to its small scale,mild reaction conditions,and flexible *** the present work,the basic principles of plasma nitrogen fixation technology and its associated research progress are *** production efficiency of various plasmas is summarized and ***,the prospect of nitrogen fixation using low-temperature plasma in the future was proposed.

关键词： Plasma Ammonia synthesis Nitrogen oxides Plasma activated water

Fabricating amide functional group modified hyper-cross-linked adsorption resin with enhanced adsorption and recognition performance for 5-hydroxymethylfurfural adsorption via simple one-step

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Chinese Journal of Chemical Engineering 2022年第3期35卷 230-239页

作者： Lei Hu Shunhui Tao Junting Xian Xiaodong Zhang Yao Liu Xiaojie Zheng xiaoqing lin School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Guangdong Provincial Key Laboratory of Plant Resources Biorefinery Guangdong University of TechnologyGuangzhou 510006China Guangzhou Key Laboratory of Clean Transportation Energy Chemistry Guangdong University of TechnologyGuangzhou 510006China

In this study,three kinds of amide functional group modified hyper-cross-linked adsorption resin were synthesized by alternating radical copolymerization in simple one-step and applied for 5-hydroxymethylfurfural(5-HMF)*** successful synthesis and properties of adsorbents were evaluated with Fourier transform infrared spectroscopy,scanning electron microscopy,nitrogen adsorption-desorption isotherms,thermogravimetric analysis,and elemental ***(N,N’-4,4’-diphenyl methane-bismaleimide-alt-divinylbenzene)(poly(BDM-alt-DVB))resin exhibited highest adsorption capacity for 5-HMF(64.0 mg·g^(-1)wet resin)and excellent adsorption selectivity(a_(5-HMF/LA)=2.71±0.12,α_(5-HMF/FA)=13.88±0.15,α_(5-HMF/Glucose)=11.91±1.11)in the multi-component solution at 25℃.Langmuir isotherm model well fitted the equilibrium adsorption data within the initial 5-HMF concentration range of 0.5-10.0 g·L^(-1) with highest correlation ***,the thermodynamic parameters demonstrated that the adsorption of 5-HMF onto poly(BDM-alt-DVB)resin was spontaneous and *** study revealed that the adsorption process was fast,reaching equilibrium within12 ***,the poly(BDM-alt-DVB)resin also demonstrated excellent *** summary,the poly(BDM-alt-DVB)resin will be useful in 5-HMF hydrolysate separation applications.

关键词： Adsorption 5-Hydroxymethylfurfural Isotherm Thermodynamics Kinetics Mechanism

Liquid–liquid extraction of levulinic acid from aqueous solutions using hydrophobic tri-n-octylamine/alcohol-based deep eutectic solvent

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Chinese Journal of Chemical Engineering 2023年第2期54卷 248-256页

作者： Yinglin Mai Xiaoling Xian Lei Hu Xiaodong Zhang Xiaojie Zheng Shunhui Tao xiaoqing lin School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Guangdong Provincial Key Laboratory of Plant Resources Biorefinery Guangdong University of TechnologyGuangzhou 510006China Guangzhou Key Laboratory of Clean Transportation Energy Chemistry Guangdong University of TechnologyGuangzhou 510006China

Levulinic acid(LA)is one of the top-12 most promising biomass-based platform chemicals,which has a wide range of applications in a variety of ***,separation and purification of LA from aqueous solution or actual hydrolysate continues to be a *** various downstream separation technologies,liquid-liquid extraction is a low-cost,effective,and simple process to separate *** key breakthrough lies in the development of extractants with high extraction efficiency,good hydrophobicity,and low *** this work,three hydrophobic deep eutectic solvents(DESs)based on tri-n-octylamine(TOA)as hydrogen bond acceptor(HBA)and alcohols(butanol,2-octanol,and menthol)as hydrogen bond donors(HBDs)were developed to extract LA from aqueous *** molar ratios of HBD and HBA,extraction temperature,contact time,solution pH,and initial LA concentration,DES/water volume ratios were systematically *** with 2-octanol-TOA and menthol-TOA DES,the butanol-TOA DES exhibited the superior extraction performance for LA,with a maximum extraction efficiency of 95.79±1.4%.Moreover,the solution pH had a great impact on the LA extraction efficiency of butanol-TOA(molar ratio=3:1).It is worth noting that the extraction equilibrium time was less than 0.5 *** importantly,the butanol-TOA(3:1)DES possesses good extraction abilities for low,medium,and high concentrations of LA.

关键词： Extraction Separation Levulinic acid Deep eutectic solvents Hydrophobic Aqueous solution