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A 3D-printed smartphone-based platform for in-situ and rapid monitoring of aquaculture pathogens using polydimethylsiloxane (PDMS) microchip with multiplex loop-mediated isothermal amplification (M-LAMP)

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Biosensors and Bioelectronics: X 2025年

作者： Liyan Li Jing Fu Elaine Li Ching Chiang Jerald Yoo Sungwoo Bae Department of Civil and Environmental Engineering National University of Singapore Key Laboratory of Organic Compound Pollution Control Engineering School of Environmental and Chemical Engineering Shanghai University Yong Loo Lin School of Medicine National University of Singapore Department of Electrical and Computer Engineering Seoul National University Department of Environmental Engineering Korea University

Aquaculture pathogens pose serious risks to aquatic livestock and global food safety. key threats in shrimp farming include white spot syndrome virus (WSSV), Vibrio parahaemolyticus (causing acute hepatopancreatic necrosis disease, AHPND), and Enterocytozoon hepatopenaei (EHP). Rapid, on-site detection is critical for early detection and outbreak prevention. In this study, we developed a portable, smartphone-based diagnostic platform utilizing multiplex loop-mediated isothermal amplification (LAMP) for simultaneous detection of multiple pathogens in a single reaction. A PDMS microchip with 30 reaction wells (5 × 6 array) and a temperature control well was fabricated for efficient multiplexing. Immobilized LAMP reagents with freeze-drying lyophilization were preloaded into wells to streamline preparation and enhance stability. The system successfully identified both waterborne indicator bacteria ( E. coli , E. faecalis , Salmonella ) and major shrimp pathogens (WSSV, AHPND, EHP) in samples from Penaeus vannamei , Penaeus monodon , and aquaculture water. The microchip maintained stable isothermal conditions (65.1 ± 0.6 °C), enabling visual detection via color change at low DNA concentrations (as low as 4 copies/μL). All WSSV and EHP infections in shrimp tissues and water samples were correctly identified using LAMP reaction within 35 minutes (excluding the DNA extraction process), demonstrating 100% positive detection rates. The smartphone interface allowed real-time imaging and result interpretation, offering a rapid, user-friendly tool for in situ pathogen monitoring. This platform represents a practical, low-cost solution for field diagnostics and improved disease management in aquaculture.

关键词： smartphone-based diagnostics multiplex LAMP PDMS microchip lyophilized primers pathogen detection rapid and on-site detection

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Hydrochar relieved long chain fatty acids (LCFA) inhibition in continuous anaerobic reactor treating food waste

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Bioresource Technology 2025年 432卷 132658页

作者： Sun, Meichen Cheng, Yafei Jiang, Taoyang Zhang, Yalei Zhang, Shicheng Luo, Gang Department of Environmental Science and Engineering Fudan University Shanghai200438 China Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes Shanghai200438 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China

In the anaerobic digestion (AD) process, high concentration of long-chain fatty acids (LCFA) can inhibit the metabolic activities of microorganisms and even cause reactor collapse. The present study showed hydrochar enhanced the methane production from LCFA-inhibited food waste by 37.2 % in a semi-continuous flow anaerobic reactor. Hydrochar not only enhanced the degradation of LCFA, but also promoted the AD of food waste itself. Genome-centric metatranscriptomics showed that the reactor with the addition of hydrochar induced the enrichment of different LCFA-degrading bacteria, thus facilitating the degradation of LCFA. Hydrochar also promoted the enrichment of highly active acidification bacteria, butyrate-oxidizing bacteria and propionate-oxidizing bacteria, as well as acetoclastic methanogens and hydrogenotrophic methanogens. This study provided intrinsic insights into the mechanisms of how hydrochar promoted the AD of LCFA-inhibited food waste, which was of great practical importance for understanding the impact of hydrochar on the actual process of anaerobic treatment of food waste. © 2025

关键词： Acetobacter

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Intake of tobacco nitrosamines of smokers in various provinces of China and their cancer risk:A meta-analysis

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Journal of Environmental Sciences 2024年第7期141卷 249-260页

作者： Xiao Li Zhiwei Ye Jun Wang Pengfei Lin Xiaojin Zhang Shuguang Xie Chao Chen Research Institute for Environmental Innovation(Suzhou) TsinghuaSuzhouJiangsu 215163China State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Shenzhen Key Laboratory of Organic Pollution Prevention and Control State Key Laboratory of Urban Water Resource and EnvironmentHarbin Institute of TechnologyShenzhen 518055China State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Science and EngineeringPeking UniversityBeijing 100871China

Nitrosamines are a class of carcinogens which have been detected widely in food,water,some pharmaceuticals as well as *** objectives of this paper include reviewing the basic information on tobacco consumption and nitrosamine contents,and assessing the health risks of tobacco nitrosamines exposure to Chinese *** searched the publications in English from“Web of Science”and those in Chinese from the“China National Knowledge Infrastructure”in 2022 and collected 151 literatures with valid *** content of main nitrosamines in tobacco,including 4-(methylnitrosoamino)-1-(3-pyridyl)-1-butanone(NNK),N-nitrosonornicotine(NNN),N-nitrosoanatabine(NAT),N-nitrosoanabasine(NAB),total tobacco-specific nitrosamines(TSNA),and N-nitrosodimethylamine(NDMA)were *** information of daily tobacco consumption of smokers in 30 provinces of China was also ***,the intakes of NNN,NNK,NAT,NAB,TSNAs,and NDMA via tobacco smoke were estimated as 1534ng/day,591 ng/day,685 ng/day,81 ng/day,2543 ng/day,and 484 ng/day by adult smokers in30 provinces,*** cancer risk(CR)values for NNN and NNK inhalation intake were further calculated as 1.44×10^(-5)and 1.95×10^(-4).The CR value for NDMA intake via tobacco smoke(inhalation:1.66×10^(-4))indicates that NDMA is similarly dangerous in tobacco smoke when compared with the *** China,the CR values caused by average nitrosamines intake via various exposures and their order can be estimated as the following:smoke(3.75×10^(-4))>food(1.74×10^(-4))>drinking water(1.38×10^(-5)).Smokers in China averagely suffer 200%of extra cancer risk caused by nitrosamines in tobacco when compared with non-smokers.

关键词： N-nitrosamine Tobacco Cancer risk Tobacco specific nitrosamines(TSNAs) N-nitrosodimethylamine(NDMA)

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Relationships of ozone formation sensitivity with precursors emissions,meteorology and land use types,in Guangdong-Hong Kong-Macao Greater Bay Area,China

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Journal of Environmental Sciences 2020年第8期32卷 1-13页

作者： Yuping Chen Hui Yan Yijuan Yao Chunling Zeng Ping Gao Liyue Zhuang Liya Fan Daiqi Ye School of Environment and Energy South China University of Technology(SCUT)Guangzhou 510006China Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control SCUTGuangzhou 510006China National Engineering Laboratory for Volatile Organic Compounds Pollution Control Technology and Equipment SCUTGuangzhou 510006China

Due to the influences of precursors emissions,meteorology,geography and other factors,ozone formation sensitivity(OFS)is generally spatially and temporally *** study characterized detailed spatial and temporal variations of OFS in Guangdong-Hong Kong-Macao Greater Bay Area(GBA)from 2012 to 2016 based on OMI satellite data,and analyzed the relationships of OFS with precursors emissions,meteorology and land use types(LUTs).From 2012 to 2016,the OFS tended to be NOx-limited in GBA,with the value of FNR(HCHO/NO 2)increasing from 2.04 to *** to the total annual emission statistics of precursors,NOx emissions decreased by 33.1%and VOCs emissions increased by 35.2%from 2012 to 2016,directly resulting in OFS tending to be NO *** Grey Relation Analysis results show that total column water(TCW),surface net solar radiation(SSR),air temperature at 2 m(T2)and surface pressure(SP)are the top four meteorological factors with the greatest influences on *** are significant positive correlations between FNR and T2,SSR,TCW,and significant negative correlations between FNR and *** GBA,the OFS tends to be NO x-limited regime in wet season(higher T2,SSR,TCW and lower SP)and VOCs-limited regime in dry season(lower T2,SSR,TCW and higher SP).The FNR displays obvious gradient variations on different LUTs,with the highest in“Rural areas”,second in“Suburban areas”and lowest in“Urban areas”.

关键词： OMI FNR Precursors emission Meteorology Land use type Grey Relation Analysis

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Toxicity reduction in an industrial nitro-aromatic wastewater plant: An assessment and a proposed improvement

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Water Science and Technology 2012年第2期66卷 415-421页

作者： Lu, Zhao-Yang Jiang, Bi-Cun Li, Ai-Min Guo, Hong-Yan Sun, Shu-Guang Chu, Li-Mei State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing 210048 China National Engineering Research Center of Organic Pollution Control and Resources Reuse Nanjing 210046 China

In this study, the performance of a typical Chinese industrial nitro-aromatic wastewater project (operational capacity: 3,000 m3 d-1) was evaluated using chemical properties and toxicity data. Additionally, the relationship between the removal of organic pollutants and toxicity reduction was investigated throughout the whole-process wastewater treatment. Current advanced treatment reduced the dissolved organic carbon by 40% compared with biologically treated wastewater effluent (BTWE), but the acute toxicity and early life-stage toxicity increased significantly. For instance, the acute toxicity of the current advanced treated wastewater was 450% greater than that of the untreated BTWE. With the aim of effectively decreasing the toxicity of the effluent, several efficient adsorption technologies were assessed and compared for further treatment of BTWE. Coagulation and/or oxidation coupled with activated carbon adsorption, hypercrosslinked resin adsorption, or MIEX® technology was helpful for improving chemical indices and reducing toxicity. Among these adsorption treatment technologies, hypercrosslinked resin adsorption was more effective at removing most of the toxicants than MIEX® technology, and it also had better regeneration efficiency and mechanical properties compared with activated carbon. Therefore, hypercrosslinked resin adsorption may be a promising technology for enhancing organic pollutant removal and toxicity reduction of BTWE from nitro-aromatic factories. © IWA Publishing 2012.

关键词： Adsorption

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Effect of nitrite on hydrolysis-acidification, biogas production and microbial community in semi-continuous two-phase anaerobic digestion of sewage sludge

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Journal of Environmental Sciences 2023年第4期126卷 434-444页

作者： Qian Sheng Yiqing Lu Shijie Yuan Xiaowei Li Xiaohu Dai Yali Guo Bin Dong State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China School of Environmental and Chemical Engineering Organic Compound Pollution Control EngineeringMinistry of EducationShanghai UniversityShanghai 200444China Shanghai Investigation Design&Research Institute Co.Ltd. Shanghai 200335China YANGTZE Eco-Environment Engineering Research Center China Three Gorges CorporationBeijing 100038China

Previous study found that the pre-treatment of sewage sludge with nitrite improves the biogas production during the mono/two-phase anaerobic digestion (AD) using batch biochemical methane potential *** this study,the effects of nitrite on hydrolysisacidification,biogas production,volatile solids destruction and microbial composition in semi-continuous two-phase AD of sewage sludge were *** addition of nitrite promotes sludge organic matter solubilization (+484%) and VFAs production (+98.9%),and causes an increase in the VS degradation rate during the AD process (+8.7%).The comparison of biogas production from the acidogenic and methanogenic reactors with or without the addition of nitrite implies that the nitrite has no significant effect on the overall biogas production of two-phase sludge AD ***-throughput sequencing analysis shows that the microbial communities of bacteria and archaea in two-phase AD reactors significantly changes after the addition of *** (bacteria) and Candidatus Methanofastidiosum (archaea) become the dominant genera in the acidogenic and methanogenic reactors with the nitrite *** findings provide new insights about using nitrite to promote the organic matter degradation of sewage sludge in a semicontinuous two-phase AD system.

关键词： Sewage sludge Bioenergy Methane production Nitrite Semi-continuous two-phase anaerobic digestion

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Enhancement of the degradation ability for organic pollutants via the synergistic effect of photoelectrocatalysis on a self-assembled perylene diimide (SA-PDI) thin film

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Science Bulletin 2019年第13期64卷 896-903页

作者： Hong Miao Jun Yang Guilong Peng Huiquan Li Yongfa Zhu Department of Chemistry Tsinghua UniversityBeijing 100084China School of Environment Beijing Key Laboratory for Emerging Organic Contaminants ControlState Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC)Tsinghua UniversityBeijing 100084China Anhui Provincical Key Laboratory for Degradation and Monitoring of Pollution of the Environment School of Chemistry and Materials EngineeringFuyang Normal UniversityFuyang 236037China

A self-assembled perylene diimide(SA-PDI)film was prepared on an indium-tin-oxide(ITO)substrate and acted as a photoanode for the photoelectrocatalytic(PEC)degradation of some emerging contaminants under visible light irradiation(λ>420 nm)and applied *** to the synergistic effect,the photocatalytic degradation rate by the SA-PDI film under visible light irradiation and an applied voltage of 2.1 V was 2.72 times and 14.5 times those of the PC and EC processes,*** visible light irradiation not only generated a promoting effect on electrocatalytic(EC)oxidation at potentials above1.2 V but also generated many more h+ for promoting the electrocatalytic oxidation of ***,an applied voltage above 1.2 V could effectively improve the separation rate of electrons from the SA-PDI electrodes to the Pt electrodes,and then,much more ·O2-and ·OH could be generated for improving the photocatalytic(PC)oxidation ***,the h+,·OH and ·O2-could improve the synergistic effect of phenol oxidation during the PEC ***,the SA-PDI film appeared to have satisfactory stability in the PEC *** SA-PDI film was also proven to be effective for two other contaminants,namely,2,4-dichlorophenol,and ciprofloxacin.

关键词： Photoelectrocatalytic oxidation PDI electrode Phenol Degradation

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Efficient degradation of tetracycline by singlet oxygen-dominated peroxymonosulfate activation with magnetic nitrogen-doped porous carbon

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Journal of Environmental Sciences 2022年第5期34卷 330-340页

作者： Shaohua Wu Chunping Yang Yan Lin Jay J.Cheng Guangdong Provincial Key Laboratory of Petrochemcial Pollution Processes and Control School of Environmental Science and EngineeringGuangdong University of Petrochemical TechnologyMaomingGuangdong 525000China College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution Control(Hunan University)Ministry of EducationChangshaHunan 410082China Maoming Engineering Research Center for Organic Pollution Control Academy of Environmental and Resource SciencesGuangdong University of Petrochemical TechnologyMaomingGuangdong 525000China Hunan Provincial Environmental Protection Engineering Center for Organic Pollution Control of Urban Water and Wastewater ChangshaHunan 410001China Department of Biological and Agricultural Engineering North Carolina State UniversityRaleighNC 27695USA

Nonradical reaction driven by peroxymonosulfate(PMS)based advanced oxidation pro-cesses has drawn widespread attention in water treatment due to their inherent advantages,but the degradation behavior and mechanism of organic pollutants are still *** this study,the performance,intermediates,mechanism and toxicity of tetracycline(TC)degra-dation were thoroughly examined in the constructed magnetic nitrogen-doped porous car-bon/peroxymonosulfate(Co-N/C-PMS)*** results showed that 85.4%of TC could be removed within 15 min when Co-N/C and PMS was simultaneously added and the degra-dation rate was enhanced by 3.4 and 14.7 folds compared with Co-N/C or PMS alone,***,the performance of Co-N/C was superior to that of most previously reported *** lines of evidence indicated that Co-N/C-PMS system was a singlet oxygen-dominated nonradical reaction,which was less interfered by pH and water compo-nents,and displayed high adaptability to actual water ***,the degrada-tion process was elaborated on the basis of three-dimensional excitation-emission matrix spectra and liquid chromatography-mass *** last,the toxicity of treated TC was greatly reduced by using microalgae Coelastrella *** ecological *** study provides a promising approach based on singlet oxygen-dominated nonradical reaction for eliminating TC in water treatment.

关键词： Tetracycline Peroxymonosulfate Activation Singlet oxygen Toxicity

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Chemical characterization of volatile organic compounds (VOCs) emitted from multiple cooking cuisines and purification efficiency assessments

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Journal of Environmental Sciences 2023年第8期130卷 163-173页

作者： Hanyu Zhang XuejunWang Xianbao Shen Xin Li BoboWu Guohao Li Huahua Bai Xinyue Cao Xuewei Hao Qi Zhou Zhiliang Yao School of Ecology and Environment Beijing Technology and Business UniversityBeijing 100048China State Environmental Protection Key Laboratory of Food Chain Pollution Control Beijing Technology and Business UniversityBeijing 100048China Beijing Municipal Research Institute of Environmental Protection Beijing Key Laboratory of Urban Atmospheric Volatile Organic Compounds Pollution Control and ApplicationNational Urban Environmental Pollution Control Engineering Research CenterBeijing 100037China

Cooking process can produce abundant volatile organic compounds(VOCs),which are harmful to environment and human ***,we conducted a comprehensive analysis in which VOCs emissions from multiple cuisines have been sampled based on the simulation and acquisition platform,involving concentration characteristics,ozone formation potential(OFP)and purification efficiency *** emissions varied from 1828.5 to 14,355.1μg/m^(3),with the maximumand minimumvalues fromBarbecue and Family cuisine,*** and alcohol had higher contributions to VOCs from Sichuan and Hunan cuisine(64.1%),Family cuisine(66.3%),Shandong cuisine(69.1%)and Cantonese cuisine(69.8%),with the dominant VOCs species of ethanol,isobutane and *** comparison,alcohols(79.5%)were abundant for Huaiyang cuisine,while alkanes(19.7%),alkenes(35.9%)and haloalkanes(22.9%)accounted for higher proportions from ***,carbon tetrachloride,n-hexylene and 1-butene were the most abundant VOCs species for Barbecue,ranging from 8.8%to 14.6%.The highest OFP occurred in *** sensitive species of OFP for Huaiyang cuisine were alcohols,while other cuisines were *** efficiency assessments shed light on the removal differences of individual and synergistic control *** emissions exhibited a strong dependence on the photocatalytic oxidation,with the removal efficiencies of 29.0%–54.4%.However,the high voltage electrostatic,wet purification and mechanical separation techniques played a mediocre or even counterproductive role in the VOCs reduction,meanwhile collaborative control technologies could not significantly improve the removal *** results identifiedmore effective control technologies,which were conductive to alleviating air pollution from cooking emissions.

关键词： Cooking emissions Volatile organic compounds(VOCs) VOCs categories Ozone formation potential(OFP) Purification efficiency

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EFFECT OF HYPERCROSSLINKED RESINS SURFACE CHEMISTRY ON THE ADSORPTION OF PHENOL FROM AQUEOUS SOLUTION

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Chinese Journal of Polymer Science 2006年第6期24卷 585-591页

作者： Guan-hua Meng Ai-min Li Wei-ben Yang Fu-qiang Liu Quan-xing Zhang State Key Laboratory of Pollution Control and Resources Reuse School of the Environment Nanjing University Nanjing 210093 China Engineering Technology Research Center of Organic Toxie Substance Control and Resource Reuse of Jiangsu Province Nanjing 210038 China

Two hypercrosslinked resins with similar physical characters but different surface chemistry were synthesized and used to remove phenol from aqueous solutions. The FTIR spectra, elemental analysis and the Boehm titration were used to characterize the chemical properties of the resins. The adsorption experiments were carried out using the bottle-point technique, and the effects of the surface chemistry on the adsorption were discussed. The adsorption data fit well with the Freundlich model, indicating the heterogeneity of the resins surface. It could be seen from the experimental results that the adsorption capacity increased with the increase in the total surface concentration of oxygen-containing groups. The pH dependence and the effects of ionic strength were also discussed. The kinetic adsorption data fit well with the pseudo-second order model, and the results showed that the surface oxygen-containing groups have little effect on the adsorption rate.

关键词： Hypercrosslinked resin Phenol Surface chemistry Adsorption isotherm Kinetic study.

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