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Occurrence and migration of microplastics and plasticizers in different wastewater and sludge treatment units in municipal wastewater treatment plant

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Frontiers of Environmental Science & Engineering 2022年第11期16卷 203-212页

作者： Sen Dong Peng Gao Benhang Li Li feng Yongze Liu ziwen Du Liqiu Zhang Beijing Key Laboratory for Source Control Technology of Water Pollution Engineering Research Center for Water Pollution Source Control and Eco-remediationBeijing Forestry UniversityBeijing 100083China

Microplastics(MPs)and plasticizers,such as phthalate esters(PAEs),were frequently detected in municipal wastewater treatment plants(MWTP).Previous research mainly studied the removal of MPs and PAEs in ***,the occurrence of MPs and PAEs in the sludge was generally *** comprehensively investigate the occurrence and the migration behaviors of MPs and PAEs in MWTP,a series of representative parameters including the number,size,color,shape of MPs,and the concentrations of PAEs in wastewater and sludge were systematically *** this study,the concentrations of MPs in the influent and effluent were 15.46±0.37 and 0.30±0.14 particles/*** MP removal efficiency of 98.1%was achieved and about 73.8%of MPs were accumulated in the sludge in the *** numbers of MPs in the sludge before and after digestion were 4.40±0.14 and 0.31±0.01 particles/g(dry sludge),*** Transform Infrared Spectroscopy(ATR FT-IR)analysis showed that the main types of MPs were polyethylene terephthalate(PET),polypropylene(PP),polyethylene(PE),and polystyrene(PS).Six PAEs,including phthalate(DMP),diethyl phthalate(DEP),diisobutyl phthalate(DIBP),ortho dibutyl phthalate(DBP),butyl benzyl phthalate(BBP),and bis(2-ethyl)hexyl phthalate(DEHP),were detected in the *** concentrations of total PAEs(ΣPAEs)in the influent and effluent were 76.66 and 6.28μg/L,*** concentrations ofΣPAEs in the sludge before and after digestion were 152.64 and 31.70μg/g,*** the process of thermal hydrolysis,the number and size of MPs decreased accompanied by the increase of the plasticizer concentration.

关键词： Microplastics Municipal wastewater treatment plant Phthalate esters Thermal hydrolysis

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城市社区水环境治理技术探析

能源与节能 2022年第9期 96-99页

作者：李津青冯子文台航迪李程蔡雨阳曹宇河南沃克曼建设工程有限公司河南郑州450000

2015年《水污染防治行动计划》(简称“水十条”)出台,明确提出到2020年,地级及以上城市建成区黑臭水体均控制在10%以内;到2030年,城市建成区黑臭水体总体得到消除。在此背景下,通过分析郑州市一社区水环境问题形成的主要原因,阐述了治... 详细信息

2015年《水污染防治行动计划》(简称“水十条”)出台,明确提出到2020年,地级及以上城市建成区黑臭水体均控制在10%以内;到2030年,城市建成区黑臭水体总体得到消除。在此背景下,通过分析郑州市一社区水环境问题形成的主要原因,阐述了治理技术,探讨了控源截污、内源治理和磁混凝水质净化技术在社区小微水环境问题治理中的应用。

关键词：城市社区黑臭水体水环境问题治理技术

Two decades of suspect evidence for adaptive molecular evolution——negative selection confounding positive-selection signals

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National Science Review 2022年第5期9卷 129-141页

作者： Qipian Chen Hao Yang Xiao feng Qingjian Chen Suhua Shi Chung-Ⅰ Wu ziwen He State Key Laboratory of Biocontrol Guangdong Key Laboratory of Plant Resources School of Life SciencesSouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Sun Yat-sen University

There has been a large literature in the last two decades affirming adaptive DNA sequence evolution between *** main lines of evidence are from(i) the McDonald-Kreitman(MK) test,which compares divergence and polymorphism data,and(ii) the phylogenetic analysis by maximum likelihood(PAML) test,which analyzes multispecies divergence ***,we apply these two tests concurrently to genomic data of Drosophila and *** our surprise,the> 100 genes identified by the two tests do not overlap beyond random *** the non-concordance could be due to low powers leading to high false negatives,we merge every 20-30 genes into a 'supergene'.At the supergene level,the power of detection is large but the calls still do not *** rule out methodological reasons for the *** particular,extensive simulations fail to find scenarios whereby positive selection can only be detected by either MK or PAML,but not *** molecular evolution is governed by positive and negative selection concurrently,a fundamental assumption for estimating one of these(say,positive selection) is that the other is ***,in a broad survey of primates,birds,Drosophila and Arabidopsis,we found that negative selection rarely stays constant for long in *** a consequence,the variation in negative selection is often misconstrued as a signal of positive *** conclusion,MK,PAML and any method that examines genomic sequence evolution has to explicitly address the variation in negative selection before estimating positive *** a companion study,we propose a possible path forward in two stages—first,by mapping out the changes in negative selection and then using this map to estimate positive *** now,the large literature on positive selection between species has to await reassessment.

关键词： molecular evolution neutral theory natural selection

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不同生长期苦瓜对瓜实蝇产卵选择的影响

热带农业科学 2016年第8期36卷 52-55页

作者：李磊冯子文牛黎明张方平韩冬银符悦冠中国热带农业科学院环境与植物保护研究所海南海口571101

瓜实蝇（Bactrocera cucurbitae）是苦瓜（Momordica charantia）的一种重要入侵性害虫,评估其在不同生长期苦瓜上的产卵偏好,旨在摸清该虫的防治适期。本研究选取了不同生长期的苦瓜,通过设定选择性和非选择性测试,在室内研究了不同生... 详细信息

瓜实蝇（Bactrocera cucurbitae）是苦瓜（Momordica charantia）的一种重要入侵性害虫,评估其在不同生长期苦瓜上的产卵偏好,旨在摸清该虫的防治适期。本研究选取了不同生长期的苦瓜,通过设定选择性和非选择性测试,在室内研究了不同生长期损伤和未损伤的苦瓜对瓜实蝇产卵偏好的影响。结果表明：不同生长期的苦瓜显著影响了瓜实蝇的产卵偏好。针对无损伤的苦瓜,瓜实蝇偏好在谢花2-5和6-8 d后的苦瓜上产卵;针对损伤的苦瓜,除谢花1 d的苦瓜外,瓜实蝇在其它生长期苦瓜上的产卵偏好无显著性差异。基于本研究,对于无损伤的苦瓜,谢花2-8 d是预防和防治瓜实蝇的关键时期;而苦瓜一旦损伤,除谢花1 d外所有生长期均应提防瓜实蝇的为害。

关键词：苦瓜生长期瓜实蝇产卵偏好

Effect of allelochemicals sustained-release microspheres on the ingestion, incorporation, and digestion abilities of Daphnia magna Straus

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Journal of Environmental Sciences 2023年第2期124卷 205-214页

作者： Benhang Li Yijun Yin Xiaohong Zhou Li feng Yongze Liu ziwen Du Yajun Tian Liqiu Zhang Beijing Key Laboratory for Source Control Technology of Water Pollution Engineering Research Center for Water Pollution Source Control and EcoremediationBeijing Forestry UniversityBeijing 100083China College of Environment Zhejiang University of TechnologyHangzhou 310014China

Allelochemicals sustained-release microspheres(ACs-SMs)exhibited great inhibition effect on algae,however,few studies have focused on ACs-SMs toxicity on *** this study,the effects of single high-concentration ACs(15 mg/L,SH-ACs),repeated lowconcentration ACs(3×5 mg/L,RL-ACs)and ACs-SMs containing 15 mg/L ACs exposure on the ingestion,incorporation,and digestion of Daphniamagna Straus(DS)were investigated by stable isotope 15N labeling ***,the diversity and abundance of microflora in DS guts were determined by 16S rRNA genes and cloning *** results showed that SH-ACs exposure caused 50%and 33.3%death rates for newborn and adult DS,while RL-ACs exposure caused 10%death rate for newborn DS and no obvious effect on the activity of adult *** ACs-SMs exposure did not diminish the motility of both newborn and adult DS,indicating the lower acute toxicity of ***,SH-ACs inhibited the ingestion(-6.45%),incorporation(-47.1%)and digestion(-53.8%)abilities of DS and reduced the microbial abundance(-27.7%)in DS *** with SH-ACs,RL-ACs showed relatively low impact on the ingestion(-3.23%),incorporation(-5.89%)and digestion(-23.9%)abilities of ***,ACs-SMs enhanced the ingestion(+9.68%),incorporation(+52.9%)and digestion(+51.3%)abilities of DS and increased the microbial abundance(+10.7%)in DS *** ACs and ACs-SMs reduced the diversity of microflora in DS *** conclusion,ACs-SMs can release ACs sustainably and prolong the sustained release time,which not only effectively reduce the toxicity of ACs,but also had positive effects on DS.

关键词： Allelochemicals(ACs) Sustained-release microspheres (SMs) Daphnia magna Straus(DS)

Sorption of aromatic organophosphate flame thermally and hydrothermally produced retardants on biochars

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Frontiers of Environmental Science & Engineering 2020年第3期14卷 75-87页

作者： ziwen Du Chuyi Huang Jiaqi Meng Yaru Yuan Ze Yin Li feng Yongze Liu Liqiu Zhang Beijing Key Laboratory for Source Control Technology of Water Pollution Engineering Research Center for Water Pollution Source Control and Eco-remediationBeijing Forestry UniversityBeijing 100083China College of Environmental Science and Engineering North China Electric Power UniversityBeijing 102206China

Aromatic organophosphate flame retardant(OPFR)pollutants and biochars are commonly present and continually released into soils due to their increasingly wide *** this study,for the first time,the sorption of OPFRs on biochars was *** triphenyl phosphate(TPhP)and triphenylphosphine oxide(TPPO)have similar molecular structures and sizes,TPhP exhibited much faster and higher sorption than TPPO due to its stronger hydrophobicity,suggesting the dominant role of hydrophobic interactions in TPhP ***π-πelectron donor-acceptor(EDA)interactions also contributed to the sorption process,as suggested by the negative correlation between the sorption capacity of the aromatic OPFRs and the aromatic index(H/C atomic ratios)of *** functional theory calculations further showed that one benzene ring of aromatic OPFRs has no electrons,which may interact with biochar viaπ-πEDA *** electrostatic attraction between the protonated P=O in OPFRs and the negatively charged biochar was found to occur at pH below *** work provides insights into the sorption behaviors and mechanisms of aromatic OPFRs by biochars.

关键词： Organophosphate flame retardants Hydrochar Pyrochar Adsorption Emerging contaminants Biochar

Removal efficiencies of natural and synthetic progesterones in hospital wastewater treated by different disinfection processes

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Frontiers of Environmental Science & Engineering 2022年第10期16卷 11-22页

作者： Jinhui Liang Yuchen Luo Benhang Li Shiqi Liu Liansheng Yang Peng Gao Li feng Yongze Liu ziwen Du Liqiu Zhang Beijing Key Laboratory for Source Control Technology of Water Pollution Engineering Research Center for Water Pollution Source Control and Eco-remediationBeijing Forestry UniversityBeijing 100083China

Progesterones are ubiquitous in hospital wastewater(HWW)with concentrations much higher than those of estrogens and *** ensure that these water systems are safe to use,disinfection is crucial during HWW treatment by providing"front line"defense against biological ***,five disinfection processes,namely,chlorine(Cl_(2)),chlorine dioxide(ClO_(2)),ozone(O_(3)),ultraviolet(UV)),and UV/chlorine(UV/Cl_(2)),were selected to investigate their removal efficiencies for progesterones in primary filtration and secondary biological treatment *** were 61 natural and synthetic progesterones detected in HWW,with the natural progesterones being the main components with a concentration of 845.51 ng/L and contributing to 75.08%of the total *** primary filtration treatment presented insignificant removal effects on the progesterones,while the secondary biological treatment significantly reduced the progesterone content by *** order of removal efficiencies of total progesterones by different disinfection processes was UV/Cl_(2)>Cl_(2)>O_(3)>ClO_(2)>***/Cl_(2)showed the highest removal efficiency against progesterones mainly due to the activation of Cl_(2)by ultraviolet(UV)photolysis,which helps open the heterocyclic,aromatic,and phenolic rings,thus accelerating progesterone *** addition,the removal efficiencies of natural progesterones in the five disinfection processes were higher than those of synthetic progesterones(progesterone derivatives,19-nortestosterone derivatives,and 17α-hydroxyprogesterone derivatives).

关键词： Progesterones Hospital wastewater Primary filtration treatment effluent Secondary biological treatment effluent Disinfection process

Expansion and adaptive evolution of the WRKY transcription factor family in Avicennia mangrove trees

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Marine Life Science & Technology 2023年第2期5卷 155-168页

作者： Xiao feng Guohong Li Weihong Wu Haomin Lyu Jiexin Wang Cong Liu Cairong Zhong Suhua Shi ziwen He State Key Laboratory of Biocontrol Guangdong Key Laboratory of Plant ResourcesSchool of Life SciencesSouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Sun Yat-sen UniversityGuangzhou 510275China Greater Bay Area Institute of Precision Medicine(Guangzhou) Fudan UniversityGuangzhou 511458China Hainan Academy of Forestry(Hainan Academy of Mangrove) Haikou 571100China

Mangroves are adapted to intertidal zones,which present extreme environmental *** are among the most prominent transcription factors(TFs)in higher plants and act through various interconnected networks to regulate responses to multiple abiotic ***,based on omic data,we investigated the landscape and evolutionary patterns of WRKYs in the main mangrove genus *** found that both the number and the proportion of TFs and WRKYs in Avicennia species exceeded their inland relatives,indicating a signifcant expansion of WRKYs in *** identifed 109 WRKY genes in the representative species Avicennia *** genomic analysis showed that two recent wholegenome duplication(WGD)events played a critical role in the expansion of WRKYs,and 88%of Avicennia marina WRKYs(AmWRKYs)have been retained following these *** comparative transcriptomics on roots under experimental salt gradients,we inferred that there is high divergence in the expression of WGD-retained ***,we found that the expression of 16 AmWRKYs was stable between freshwater and moderately saline water but increased when the trees were exposed to high *** particular,14 duplicates were retained following the two recent WGD events,indicating potential neo-and *** also found that WRKYs could interact with other upregulated genes involved in signalling pathways and natural antioxidant biosynthesis to enhance salt tolerance,contributing to the adaptation to intertidal *** omic data of the WRKY family in *** broadens the understanding of how a TF family relates to the adaptive evolution of mangroves.

关键词： Adaptation Avicennia Mangrove Transcription factor Whole-genome duplication WRKY

Genomic analysis of Nypa fruticans elucidates its intertidal adaptations and early palm evolution

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Journal of Integrative Plant Biology 2024年第4期66卷 824-843页

作者： Weihong Wu Xiao feng Nan Wang Shao Shao Min Liu Fa Si Linhao Chen Chuanfeng Jin Shaohua Xu Zixiao Guo Cairong Zhong Suhua Shi ziwen He State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources School of Life SciencesSun Yat-sen UniversityGuangzhou 510275China Greater Bay Area Institute of Precision Medicine School of Life SciencesFudan UniversityGuangzhou 511462China Hainan Academy of Forestry(Hainan Academy of Mangrove) Haikou 571100China

Nypa fruticans(Wurmb),a mangrove palm species with origins dating back to the Late Cretaceous period,is a unique species for investigating long-term adaptation strategies to intertidal environments and the early evolution of ***,we present a chromosome-level genome sequence and assembly for *** integrated the genomes of *** and other palm family members for a comparative genomic analysis,which confirmed that the common ancestor of all palms experienced a whole-genome duplication event around 89 million years ago,shaping the distinctive characteristics observed in this *** also inferred a low mutation rate for the *** genome,which underwent strong purifying selection and evolved slowly,thus contributing to its stability over a long evolutionary ***,ancient duplicates were preferentially retained,with critical genes having experienced positive selection,enhancing waterlogging tolerance in ***,we discovered that the pseudogenization of Early Methionine-labelled 1(EM1)and EM6 in *** underly its crypto-vivipary characteristics,reflecting its intertidal *** study provides valuable genomic insights into the evolutionary history,genome stability,and adaptive evolution of the mangrove *** results also shed light on the long-term adaptation of this species and contribute to our understanding of the evolutionary dynamics in the palm family.

关键词： crypto-vivipary genome stability long-term adaptation mangrove Nypa fruticans palm