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Response of ocean acidification to atmospheric carbon dioxide removal

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Journal of Environmental Sciences 2024年第6期140卷 79-90页

作者： Jiu jiang Long Cao Xiaoyu Jin Zechen Yu Han Zhang Jianjie Fu Guibin Jiang School of Environment Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Key Laboratory of Geoscience Big Data and Deep Resources of Zhejiang Province School of Earth SciencesZhejiang UniversityHangzhou 310058China Zhejiang Climate Center Hangzhou 310052China

Artificial CO_(2)removal from the atmosphere(also referred to as negative CO_(2)emissions)has been proposed as a potential means to counteract anthropogenic climate change.Here we use an Earth system model to examine the response of ocean acidification to idealized atmospheric CO_(2)removal scenarios.In our simulations,atmospheric CO_(2)is assumed to increase at a rate of 1%per year to four times its pre-industrial value and then decreases to the pre-industrial level at a rate of 0.5%,1%,2%per year,respectively.Our results show that the annual mean state of surface ocean carbonate chemistry fields including hydrogen ion concentration([H^(+)]),pH and aragonite saturation state respond quickly to removal of atmospheric CO_(2).However,the change of seasonal cycle in carbonate chemistry lags behind the decline in atmospheric CO_(2).When CO_(2)returns to the pre-industrial level,over some parts of the ocean,relative to the pre-industrial state,the seasonal amplitude of carbonate chemistry fields is substantially larger.Simulation results also show that changes in deep ocean carbonate chemistry substantially lag behind atmospheric CO_(2)change.When CO_(2)returns to its pre-industrial value,the whole-ocean acidity measured by[H^(+)]is 15%-18%larger than the pre-industrial level,depending on the rate of CO_(2)decrease.Our study demonstrates that even if atmospheric CO_(2)can be lowered in the future as a result of net negative CO_(2)emissions,the recovery of some aspects of ocean acidification would take decades to centuries,which would have important implications for the resilience of marine ecosystems.

关键词： Carbon dioxide removal Net negative CO_(2)emission Ocean acidification Climate change Earth system modeling

Levels,distributions,and sources of legacy and novel per-and perfluoroalkyl substances(PFAS)in the topsoil of Tianjin,China

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Journal of Environmental Sciences 2022年第2期34卷 71-81页

作者： Donghui Ma Huifang Zhong Jitao Lv Yawei Wang Guibin Jiang State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances Institute of Environment and HealthJianghan UniversityWuhan 430056China

Soil is a major sink for per-and perfluoroalkyl substances(PFAS),wherein PFAS may be transferred through the food chain to predators at upper trophic levels,which poses a threat to human health.Herein,the concentrations and distributions of legacy and novel PFAS in topsoil samples from different functional areas in Tianjin were comprehensively investigated.Seventeen PFAS congeners were identified,with concentrations ranging from 0.21 ng/g to 5.35 ng/g,with a mean concentration of 1.25 ng/g.The main PFAS in the topsoil was perfluorooctanoic acid(PFOA).6:2 chlorinated polyfluorinated ether sulfonate(6:2 ClPFESA;C8)were the major sources(43.4%),followed by food packaging as well as coating materials(25.5%).In addition,Spearman correlation analysis and the structural equation model showed that population density significantly impacted the PFAS distribution in the topsoil of Tianjin.

关键词： PFAS Topsoil 6:2 Cl-PFESA Source Distribution

Hollow TiO_2 spheres with improved visible light photocatalytic activity synergistically enhanced by multi-stimulative: Morphology advantage,carbonate-doping and the induced Ti^(3+)

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Journal of Environmental Sciences 2018年第10期30卷 153-165页

作者： Guoliang Li Chunyang Liao Guibin Jiang State Key Laboratory of Environmental Chemistry and Eco-toxicology Research Center for Eco-Environmental SciencesChinese Academy of Sciences

Great efforts have been devoted to improve the photocatalytic activity of TiO2 in the visible light region. Rational design of the external structure and adjustment of intrinsic electronic status by impurity doping are two main effective ways to achieve this purpose. A facile onepot synthetic approach was developed to prepare C-doped hollow TiO2 spheres, which simultaneously realized these advantages. The synthesized TiO2 exhibits a mesoporous hollow spherical structure composed of fine nanocrystals, leading to high specific surface area（~180 m^2/g） and versatile porous texture. Carbonate-doping was achieved by a postthermal treatment at a relatively low temperature（200°C）, which makes the absorption edge red-shifted to the visible region of the solar spectrum. Concomitantly, Ti^（3＋） induced by C-doping also functions in improving the visible-light photocatalytic activity by reducing the band gap. There exists a synergistic effect from multiple stimulatives to enhance the photocatalytic effect of the prepared TiO2 catalyst. It is not out of expectation that the asprepared C-doped hollow TiO2 spheres exhibits an improved photocatalytic activity under visible light irradiation in organic pollutant degradation.

关键词： Hollow TiO2 sphere Carbonate Ti^3＋ Visible light Photo-degradation Synergistic enhancement

Influence of microplastics on the photodegradation of perfluorooctane sulfonamide (FOSA)

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Journal of Environmental Sciences 2023年第5期127卷 791-798页

作者： Lingyi Meng Haoting Tian Jitao Lv YaweiWang Guibin Jiang State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Centre for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China School of Environment Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310000China

PFAS(per-and polyfluoroalkyl substances)are omnipresent in the environment and their transportation and transformation have attracted increased attention.Microplastics are another potential risk substances that can serve as a carrier for ubiquitous pollutants,thus affecting the presence of PFAS in the environment.In this study,the adsorption of perfluorooctane sulfonamide(FOSA)and perfluorooctanoic acid(PFOA)on four microplastics(PE,PVC,PS,and PTFE)and their effect on the photodegradation of FOSA were studied.The adsorption capacity of FOSA by PS was the highest,in similar,PS displayed the highest adsorption capacity in the presence of PFOA.Different effects of pH and salinity on the adsorption of FOSA and PFOA were observed among different microplastics indicating inconsistent interaction mechanisms.Furthermore,FOSA could be photodegraded,with PFOA as the main product,while the presence of microplastics had a negligible effect on the degradation of this contaminant.The results indicated that microplastics could act as PFAS concentrators.Moreover,their photochemical inertiasmake the pollutants enriched onmicroplastics more resistant to degradation.

关键词： Microplastic Per-and polyfluoroalkyl substances (PFAS) Transportation Transformation

The potential of 3D printing in facilitating carbon neutrality

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Journal of Environmental Sciences 2023年第8期130卷 85-91页

作者： Dingyi Wang Tingting Zhang Xudong Guo Dayi Ling Ligang Hu Guibin Jiang State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China School of Environment Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China School of Environment and Health Jianghan UniversityWuhan 430056China

At present,dramatically reduction of fossil fuel usage is regarded as a major initiative to achieve the carbon neutrality goal.Nevertheless,current energy policies are unlikely to achieve the climate goal without sacrificing economic development and people’s livelihood because fossil fuels are currently the dominant energy source.As an environment-friendly manufacturing technology,three-dimensional printing(3DP)is flourishing and is considered beneficial to energy structure adjustment and industrial upgrading.Despite this,its potential to contribute to global carbon neutrality has not attracted enough attention.Herein,we explore the application of 3DP and its potential facilitating carbon neutrality from crucial sectors and applications including manufacturing,construction energy,livestock,and carbon capture and storage(CCS)technologies.The additive manufacturing and decentralized manufacturing characteristics of 3DP allow reducing greenhouse gas(GHG)emissions in manufacturing and construction sectors by optimized and lightweight designs,reduced material and energy consumption,and shortened transport processes.In addition,3DP enables the precise manufacturing of customized complex structures and the expansion of functional materials,which makes 3DP an innovative alternative to the development of novel energy-related devices,cultured meat production technology,and CCS technologies.Despite this,the majority of applications of 3DP are still in an early stage and need further exploration.We call for further research to precisely evaluate the GHG emission reduction potential of 3DP and to make it better involved and deployed to better achieve carbon neutrality.

关键词： Carbon neutrality GHG emissions 3D printing Green manufacturing Livestock Carbon capture and storage

Dissolved metal ion removal by online hollow fiber ultrafiltration for enhanced size characterization of metal-containing nanoparticles with single-particle ICP-MS

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Journal of Environmental Sciences 2023年第4期126卷 494-505页

作者： Haowen jiang YingWang Zhiqiang Tan Ligang Hu Jianbo Shi Guangliang Liu Yongguang Yin Yong Cai Guibin Jiang Laboratory of Environmental Nanotechnology and Health Effect Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry and Biochemistry Florida International UniversityMiami 33199USA School of Environment Hangzhou Institute for Advanced StudyUCASHangzhou 310024China

Single particle-inductively coupled plasma mass spectrometry (SP-ICP-MS) is a powerful tool for size-characterization of metal-containing nanoparticles (MCNs) at environmentally relevant concentrations,however,coexisting dissolved metal ions greatly interfere with the accuracy of particle size analysis.The purpose of this study is to develop an online technique that couples hollow fiber ultrafiltration (HFUF) with SP-ICP-MS to improve the accuracy and size detection limit of MCNs by removing metal ions from suspensions of MCNs.Through systematic optimization of conditions including the type and concentration of surfactant and complexing agent,carrier pH,and ion cleaning time,HFUF completely removes metal ions but retains the MCNs in suspension.The optimal conditions include using a mixture of 0.05 vol.%FL-70 and 0.5 mmol/L Na2S2O_(3)(pH=8.0) as the carrier and 4 min as the ion cleaning time.At these conditions,HFUF-SP-ICP-MS accurately determines the sizes of MCNs,and the results agree with the size distribution determined by transmission electron microscopy,even when metal ions also are present in the sample.In addition,reducing the ionic background through HFUF also lowers the particle size detection limit with SP-ICP-MS (e.g.,from 28.3 to 14.2 nm for gold nanoparticles).This size-based ion-removal principle provided by HFUF is suitable for both cations (e.g.,Ag+) and anions (e.g.,AuCl_(4)^(-)) and thus has good versatility compared to ion exchange purification and promising prospects for the removal of salts and macromolecules before single particle analysis.

关键词： Hollow fiber ultrafiltration(HFUF) Single particle-inductively coupled plasma mass spectrometry (SP-ICP-MS) Removal of ions Particle size characterization

A sustained-release microcarrier effectively prolongs and enhances the antibacterial activity of lysozyme

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Journal of Environmental Sciences 2023年第7期129卷 128-138页

作者： Mei Du Jingzhang Liu Fengbang Wang Lei Bi Chunyan Ma Maoyong Song Guibin Jiang State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of ScienceBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China

Bacterial infections have become a great threat to public health in recent years.A primary lysozyme is a natural antimicrobial protein;however,its widespread application is limited by its instability.Here,we present a poly(N-isopropylacrylamide)hydrogel inverse opal particle(PHIOP)as a microcarrier of lysozyme to prolong and enhance the efficiency against bacteria.This PHIOP-based lysozyme(PHIOP-Lys)formulation is temperature-responsive and exhibits long-term sustained release of lysozyme for up to 16 days.It shows a potent antibacterial effect toward both Escherichia coli and Staphylococcus aureus,which is even higher than that of free lysozyme in solution at the same concentration.PHIOPs-Lys were demonstrated to effectively inhibit bacterial infections and enhance wound healing in a full-thickness skin wound rat model.This study provides a novel pathway for prolonging the enzymatic activity and antibacterial effects of lysozyme.

关键词： Bacterial infection Lysozyme Temperature-responsive Inverse opal particle Wound healing

Occurrence of Human Exposure to Benzothiazoles and Benzotriazoles in Indoor Dust in Suizhou and Beijing,China

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Chemical Research in Chinese Universities 2023年第3期39卷 508-515页

作者： ZHU Qingqing LIAO Chunyang jiang guibin State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085P.R.China College of Resources and Environment University of Chinese Academy of SciencesBeijing100049P.R.China Institute of Environment and Health Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou310024P.R.China Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances School of Environment and HealthJianghan UniversityWuhan430056P.R.China

Benzothiazoles(BTHs)and benzotriazoles(BTRs)are an important group of industrial chemicals.Due to large scale and long-term applications,they have been released to various environmental media,including indoor dust,and subsequently elicited a variety of toxic effects.In this study,the concentrations and composition profiles of BTHs and BTRs in indoor dust from Suizhou and Beijing,China,were investigated.The median concentrations ofΣ_(6)BTHs in indoor dust samples from Suizhou and Beijing were 133 and 439 ng/g dw,respectively,whereas theΣ5BTRs concentrations from Suizhou and Beijing were 28.4 and 40.1 ng/g dw,respectively(dw=dry weight).BTH,2-OH-BTH,1-H-BTR,and 5-Me-1-H-BTR were the predominant compounds in the dust.Human exposure to such chemicals was further evaluated.The intake for the population in Suizhou(0.163–0.939 ng/kg bw/day)and Beijing(0.0347–0.200 ng/kg bw/day)was minor(bw=body weight).The obtained results in this study will be able to add insight into human exposure to BTHs and BTRs.This study will help to identify the behavior and fate of BTHs and BTRs in the environment,and thus to scientifically assess their risk of exposure.

关键词： Benzothiazole Benzotriazole Dust Distribution Human exposure

Enhanced depolluting capabilities of microbial bioelectrochemical systems by synthetic biology

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Synthetic and Systems Biotechnology 2023年第3期8卷 341-348页

作者： Le Tao Maoyong Song Guibin Jiang Key Laboratory of Environmental Nanotechnology and Health Effects Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of ScienceBeijing100085 University of Chinese Academy of Sciences Beijing100049China

Microbial bioelectrochemical system(BES)is a promising sustainable technology for the electrical energy recovery and the treatment of recalcitrant and toxic pollutants.In microbial BESs,the conversion of harmful pollutants into harmless products can be catalyzed by microorganisms at the anode(Type I BES),chemical catalysts at the cathode(Type II BES)or microorganisms at the cathode(Type III BES).The application of synthetic biology in microbial BES can improve its pollutant removing capability.Synthetic biology techniques can promote EET kinetics,which is helpful for microbial anodic electro-respiration,expediting pollutant removing not only at the anode but also at the cathode.They offer tools to promote biofilm development on the electrode,enabling more microorganisms residing on the electrode for subsequent catalytic reactions,and to overexpress the pollutant removing-related genes directly in microorganisms,contributing to the pollutant decomposition.In this work,based on the summarized aspects mentioned above,we describe the major synthetic biology strategies in designing and improving the pollutant removing capabilities of microbial BES.Lastly,we discuss challenges and perspectives for future studies in the area.

关键词： Microbial bioelectrochemical system Extracellular electron transfer Synthetic biology Pollutant removing