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Comparative evaluation of SPE methods for biotoxicity assessment of water and wastewater:Linkage between chemical extracting efficiency and biotoxicity outcome

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Journal of Environmental Sciences 2024年第8期142卷 33-42页

作者： Jiawei Zhou Shihao Wang Xiwei He hongqiang ren Xu-Xiang Zhang State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210023China

Biotoxicity assessment results of environmental waters largely depend on the sample extraction protocols that enrich pollutants to meet the effect-trigger thresholds of ***,more chemical mixture does not necessarily translate to higher combined ***,there is a need to establish the link between chemical extracting efficiency and biotoxicity outcome to standardize extraction methods for biotoxicity assessment of environmental *** study compares the performance of five different extraction phases in solid phase extraction(SPE),namely HLB,HLB+Coconut,C18 cartridge,C18 disk and Strata-X,and evaluated their chemical extracting efficiencies and biotoxicity *** quantitatively assessed cytotoxicity,acute toxicity,genotoxicity,estrogenic activity,and neurotoxicity of the extracts using in vitro bioassays and characterized the chemical extracting efficiencies of the SPE methods through chemical recoveries of 23 model compounds with different polarities and total organic *** Pareto ranking,we identified HLB+Coconut as the optimal SPE method,which exhibited the highest level of water sample biotoxicity and recovered the most chemicals in water *** found that the biotoxicity outcomes of the extracted water samples significantly and positively correlated with the chemical extracting efficiencies of the SPE ***,we observed synchronous changing patterns in biotoxicity outcome and chemical extracting efficiencies in response to increasing sample volumes per cartridge(SVPC)during *** findings underscore that higher chemical extracting efficiency of SPE corresponds to higher biotoxicity outcome of environmental water samples,providing a scientific basis for standardization of SPE methods for adequate assessment of biotoxicities of environmental waters.

关键词： Biotoxicity Chemical recovery Solid phase extraction Surface water Wastewater

Hotspots and trends of biological water treatment based on bibliometric review and patents analysis

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Journal of Environmental Sciences 2023年第3期125卷 774-785页

作者： Lili Jin Xiangzhou Sun hongqiang ren Hui Huang State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

In order to reveal the hotspots and trends of biological water treatment from the perspectives of scientific and technological innovation, both of the bibliometric review and patents analysis were performed in this study. The Web of Science Core Collection database and Derwent Innovation Index database recorded 30023 SCI papers and 50326 patents, respectively were analyzed via information visualization technology. The results showed that China ranked the first in both papers and patents, while the United States and Japan had advantages in papers and patents, respectively. It was concluded through literature metrology analysis that microbial population characteristics, biodegradation mechanism,toxicity analysis, nitrogen and phosphorus removal and biological treatment of micropolluted wastewater were the research hotspots of SCI papers. Activated sludge process and anaerobic-aerobic combined process were the two mainstream technologies on the basis of patent technology classification analysis. Technology evolution path of biological water treatment was also elucidated in three stages based on the citation network analysis. Furthermore, the future directions including research on the law of interaction and regulation of biological phases and pollutants and the technology innovations towards the targeted biotransformation or selective biodegradation of pollutants and resource reuse of wastewater were prospected.

关键词： Biological water treatment Bibliometric review Patent analysis Technology evolution path

川中地区早发冠心病患者的危险因素及冠状动脉病变特点

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临床心血管病杂志 2024年第3期40卷 207-211页

作者：罗倩刘磊李双刘益均任宏强谭震遂宁市中心医院心内科四川遂宁629000

目的:探讨川中地区早发冠心病患者的临床危险因素及冠状动脉(冠脉)病变特点。方法:采用回顾性病例对照研究方法,收集2020年11月—2022年6月就诊于遂宁市中心医院行冠脉造影检查的患者603例,其中早发冠心病患者163例(早发冠心病组)、非... 详细信息

目的:探讨川中地区早发冠心病患者的临床危险因素及冠状动脉(冠脉)病变特点。方法:采用回顾性病例对照研究方法,收集2020年11月—2022年6月就诊于遂宁市中心医院行冠脉造影检查的患者603例,其中早发冠心病患者163例(早发冠心病组)、非早发冠心病患者240例(非早发冠心病组)、非冠心病患者200例(非冠心病组)。记录并比较各组患者一般资料、生化指标和冠脉造影结果,采用SYNTAX评分评估患者冠脉病变。采用多因素logistic回归分析早发冠心病的临床危险因素。结果:与非早发冠心病组患者比较,早发冠心病组女性、吸烟史、早发冠心病家族史比例显著升高(均P<0.05),中性粒细胞、低密度脂蛋白胆固醇(LDL-C)、甘油三酯(TG)水平显著升高(均P<0.05)。多因素logistic回归分析显示,男性(OR=5.421,95%CI:2.687~11.47,P<0.001)、中性粒细胞计数(OR=1.706,95%CI:1.469~2.017,P<0.001)、LDL-C(OR=1.350,95%CI:1.004~1.826,P=0.048)、空腹血糖(OR=1.213,95%CI:1.106~1.353,P<0.001)、室间隔厚度(OR=1.251,95%CI:1.052~1.498,P=0.012)、年龄(OR=1.161,95%CI:1.095~1.237,P<0.001)是早发冠心病的独立危险因素,左室射血分数(LVEF)是保护性因素(OR=0.915,95%CI:0.876~0.951,P<0.001)。在病变特征方面,早发冠心病组急性心肌梗死比例增加(45.4%vs 59.5%,P=0.007),单支病变比例显著升高(26.7%vs 40.5%,P=0.005),前降支病变比例(90.8%vs 75.5%,P<0.001)和SYNTAX评分水平显著降低[11.00(7.00,16.50) vs 9.00(6.00,13.50),P<0.001]。结论:男性、中性粒细胞、LDL-C、空腹血糖、室间隔厚度、年龄是川中地区患者早发冠心病的独立危险因素;早发冠心病患者的冠脉病变以单支病变较多,起病方式多为急性心肌梗死,其血管病变复杂程度低于非早发冠心病患者。

关键词：冠心病危险因素冠状动脉病变

Inhibition effect of magnetic field on nitrous oxide emission from sequencing batch reactor treating domestic wastewater at low temperature

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Journal of Environmental Sciences 2020年第1期32卷 205-212页

作者： Dan Xu Hongmin Ji hongqiang ren Jinju Geng Kan Li Ke Xu State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing University

This study aims to investigate the effect of a magnetic field on nitrous oxide(N2O)emission from a sequencing batch reactor treating low-strength domestic wastewater at low temperature(10℃).After running for 124 days in parallel,results indicated that the conversion rate of N2O for a magnetic field-sequencing batch reactor(MF-SBR)decreased by34.3%compared to that of a conventional SBR(C-SBR).Meanwhile,the removal efficiencies for total nitrogen(TN)and ammonia nitrogen(NH4-N)of the MF-SBR were 22.4%and 39.5%higher than those of the ***-throughput sequencing revealed that the abundances of AOB(Nitrosomonas),NOB(Nitrospira)and denitrifiers(Zoogloea),which could reduce N2O to N2,were promoted significantly in the *** activities(Nir)and gene abundances(nos Z nir S and nir K)for denitrification in the MF-SBR were also notably higher compared to *** study shows that application of a magnetic field is a useful approach for inhibiting the generation of N2O and promoting the nitrogen removal efficiency by affecting the microbial characteristics of sludge in an SBR treating domestic wastewater at low temperature.

关键词： Magnetic field Low temperature N2O emission Biological nitrogen removal High-throughput 16S rRNA gene sequencing

不同碳氮比下后置反硝化工艺中溶解性有机质的分子特征及其转化机理

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环境化学 2024年第8期43卷 2658-2671页

作者：崔贤程华仔韩成龙丁丽丽胡海冬任洪强南京大学环境学院污染控制与资源化研究国家重点实验室南京210023

污水处理厂后置反硝化工艺中外加碳源的投加量会影响出水溶解性有机质(DOM)的特性,从而影响后置反硝化的处理效率和出水水质.本研究以实际污水中DOM为研究对象,利用傅里叶变换离子回旋共振质谱(FT ICR-MS)开展了不同碳氮比(C/N=3、4、5... 详细信息

污水处理厂后置反硝化工艺中外加碳源的投加量会影响出水溶解性有机质(DOM)的特性,从而影响后置反硝化的处理效率和出水水质.本研究以实际污水中DOM为研究对象,利用傅里叶变换离子回旋共振质谱(FT ICR-MS)开展了不同碳氮比(C/N=3、4、5、6)下后置反硝化工艺中DOM的分子特征及其转化机理研究.结果表明,在4种C/N下,C/N=5的反应器出水芳香性DOM分子(AImod>0.5)和不饱和程度高的分子(DBE≥4)占比最高,分别为24.72%和97.6%,说明C/N=5时,出水难生物降解程度较高.通过分子转化分析可知,C/N=5的反应器产生的DOM分子占比(58.35%)最高且不饱和程度较高,去除的分子占比(2.80%)低且不饱和程度较低,再次证实C/N=5的反应器出水相较于C/N=3、4、6的反应器出水DOM分子惰性高,排放至受纳水体环境风险较低.此外,微生物群落结构及其与DOM的关联分析可知,Proteobacteria在C/N=5的反应器中相对丰度最高,其主导后置反硝化工艺中DOM分子的产生,Planctomycetota、Nitrospirota、Chloroflexi和Gemmatimonadota对DOM分子的去除和产生也具有重要作用.综上所述,推荐C/N比为5作为后置反硝化工艺中外加碳源的适宜C/N比.

关键词：溶解性有机质 (DOM) 后置反硝化傅里叶变换离子回旋共振质谱 (FT ICR-MS) 微生物群落污水处理.

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Characterization of chromophoric organic matter in effluent from Vitamin C wastewater anaerobic-aerobic treatment

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Chinese Science Bulletin 2010年第33期55卷 3763-3767页

作者： XU Ke ren hongqiang DING LiLi XIE JiCheng ren XinKun State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing 210093 China

Chroma is not effectively removed from Vitamin C(VC)wastewater by traditional anaerobic-aerobic *** means cur-rent treatment does not meet the strict new discharge standard for VC wastewater in ***,to date,no studies have investigated the removal of chroma from VC wastewater,or characterized the chromophoric organic matter in *** this study,choromophoric organic matter in effluent from anaerobic-aerobic treatment of Vitamin C wastewater was characterized using high performance gel permeation chromatography(HPGPC),ultrafiltration,and infrared(IR)and ultraviolet-visible(UV/Vis)*** water-quality indices were determined,and indicated that the organic matter in the effluent contained *** molecular weight of most organic matter in this effluent was below 1000 Da,while the remainder was between 1000-3000 *** compounds are likely biodegradation products of high molecular weight organic matter in the effluent,which are raw materials and byproducts from VC *** spectra indicated that the low molecular weight(<1000 Da)organic matter and higher molecular weight(1000-3000 Da)organic matter contain similar major functional groups,including-OH,-NH2,-CO-NH2,-C=O-,and-COO-.The effluent was treated using electrolysis,and UV/Vis spectra of this effluent before and after electrolysis indicated that-C=O is an important chroma group in this *** can easily break-C=O,and provides a feasible technology for the advanced treatment of anaerobic-aerobic effluent from VC wastewater treatment.

关键词：维生素C废水污水排放标准厌氧好氧处理特征有机物 VC废水红外光谱低分子量表征

Modeling assessment for ammonium nitrogen recovery from wastewater by chemical precipitation

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Journal of Environmental Sciences 2011年第6期23卷 881-890页

作者： Tao Zhang Qiucheng Li Lili Ding hongqiang ren Ke Xu Yonggang Wu Dong Sheng State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing 210093 China Modern Analysis Center Nanjing University Nanjing 210093 China

Chemical precipitation to form magnesium ammonium phosphate（MAP） is an effective technology for recovering ammonium nitrogen（NH4＋-N）.In the present research,we investigated the thermodynamic modeling of the PHREEQC program for NH4＋-N recovery to evaluate the effect of reaction factors on MAP *** case study of NH4＋-N recovery from coking wastewater was conducted to provide a *** surface methodology（RSM） was applied to assist in understanding the relative significance of reaction factors and the interactive effects of solution *** modeling indicated that the saturation index（SI） of MAP followed a polynomial function of *** SI of MAP increased logarithmically with the Mg2＋/NH4＋ molar ratio（Mg/N） and the initial NH4＋-N concentration（CN）,respectively,while it decreased with an increase in Ca2＋/NH4＋ and CO32？/NH4＋ molar ratios（Ca/N and CO32？/N）,*** trends for NH4＋-N removal at different pH and Mg/N levels were similar to the thermodynamic modeling *** RSM analysis indicated that the factors including pH,Mg/N,CN,Ca/N,（Mg/N）×（CO32？/N）,（pH）2,（Mg/N）2,and（CN）2 were *** surface plots were useful for understanding the interaction effects on NH4＋-N recovery.

关键词： ammonium nitrogen magnesium ammonium phosphate PHREEQC program response surface methodology

基于心脏磁共振的诺莫图预测老年非梗阻肥厚型心肌病的预后研究

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中华全科医学 2024年第2期22卷 230-234页

作者：刘磊李天娇孙宾任宏强遂宁市中心医院心血管中心四川遂宁629000 遂宁市中心医院医学影像中心南充市中心医院心血管内科四川南充637000

目的探讨老年非梗阻性肥厚型心肌病(nHCM)患者的生存预后,并建立一个基于心脏核磁共振(CMR)参数与临床特征的诺莫图来个体化评估nHCM患者的预后。方法回顾性分析2015年6月—2021年11月于遂宁市中心医院心血管中心与南充市中心医院心内... 详细信息

目的探讨老年非梗阻性肥厚型心肌病(nHCM)患者的生存预后,并建立一个基于心脏核磁共振(CMR)参数与临床特征的诺莫图来个体化评估nHCM患者的预后。方法回顾性分析2015年6月—2021年11月于遂宁市中心医院心血管中心与南充市中心医院心内科住院的179例nHCM患者,采用多因素Cox回归分析确定与患者OS相关的独立预后因素并绘制诺莫图,采用重采样法(Bootstrap)进行评估验证。结果多因素Cox回归分析显示影响预后的因素为半乳糖凝集素-3(Gal-3)、室性心动过速、心尖部室壁瘤、延迟强化(LGE)、运动负荷试验。基于以上因素绘制诺莫图,一致性指数(C-index)的Bootstrap校正值为0.908(95%CI:0.869~0.947)。区分度分析采用多时点ROC曲线计算1、3、5年生存率曲线下面积为0.907、0.935、0.921。校准曲线显示预测估计风险与实际观测结果有较好的准确度。结论Gal-3升高、室性心动过速、心尖部室壁瘤、运动负荷试验阳性与基于CMR参数中的LGE阳性是影响老年nHCM患者预后的独立危险因素;结合上述指标构建的诺莫图可以个体化评估老年nHCM患者的预后。

关键词：非梗阻性肥厚型心肌病心脏磁共振诺莫图预后

Effects of La^(3+),Ce^(3+) on nitrogen removal in sequencing batch reactor

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Frontiers of Environmental Science & Engineering 2009年第3期3卷 369-374页

作者： Qing XIA Rui LIANG Yuxiang MAO Yuning HONG Lili DING hongqiang ren Mingyu ZHAO State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210093China China National Environmental Monitoring Center Beijing 100012China Jiangsu Jiangshan Pharmaceutical Co. Ltd.Jingjiang 214500China Grandway Technology International Co. Ltd.Beijing 100102China

Batch experiments were conducted to study the short-term biological effects of rare earth ions(La^(3+),Ce^(3+))and their mixture on the nitrogen removal in a sequencing batch reactor(SBR).The data showed that higher NH4+–N removal rate,total inorganic nitrogen removal efficiency,and denitrification efficiency were achieved at lower concentrations of rare earth elements(REEs)(<1 mg/L).In the first hour of the aeration stage of SBR,the presence of REEs increased the total inorganic nitrogen removal efficiency and NH4+–N removal effi-ciency by 15.7%and 10%–15%,*** the concentrations of REEs were higher than 1 mg/L,the total inorganic nitrogen removal efficiency decreased,and nitrate was found to accumulate in the *** the concentrations of REEs was up to 50.0 mg/L,the total inorganic nitrogen removal efficiency was less than 30%of the control efficiency with a high level of *** concentrations of REEs were found to accelerate the nitrogen conversion and removal in SBR.

关键词： rare earth La^(3+) Ce^(3+) inorganic nitrogen nitrogen removal sequencing batch reactor(SBR)