环境科学学报（英文版）/Journal Journal of Environmental SciencesCSCDCSTPCD北大核心EISCI
查看更多>>Journal of Environmental Sciences是由中国科学院生态环境研究中心主办的中国第一份环境科学方面的综合性英文版学术期刊，是我国在环境科学研究领域与国际交流的窗口。自1989年创刊以来受到了国际环境科学界的关注，目前已有四十余个国内外检索机构收录本刊内容，其中包括美国科学引文文摘扩展版（SCIE/web Science）和EI。36位海外编委参与本刊编委会工作，目前该杂志由中国科学出版社和荷兰IOS出版社联合发行，订户遍及世界各主要国家。
查看更多>>摘要：Cadmium(Cd)and arsenic(As)co-contamination has threatened rice production and food safety.It is challenging to mitigate Cd and As contamination in rice simultaneously due to their opposite geochemical behaviors.Mg-loaded biochar with outstanding adsorption ca-pacity for As and Cd was used for the first time to remediate Cd/As contaminated paddy soils.In addition,the effect of zero-valent iron(ZVI)on grain As speciation accumulation in alkaline paddy soils was first investigated.The effect of rice straw biochar(SC),magnesium-loaded rice straw biochar(Mg/SC),and ZVI on concentrations of Cd and As speciation in soil porewater and their accumulation in rice tissues was investigated in a pot experiment.Addi-tion of SC,Mg/SC and ZVI to soil reduced Cd concentrations in rice grain by 46.1％,90.3％and 100％,and inorganic As(iAs)by 35.4％,33.1％and 29.1％,respectively,and reduced Cd con-centrations in porewater by 74.3％,96.5％and 96.2％,respectively.Reductions of 51.6％and 87.7％in porewater iAs concentrations were observed with Mg/SC and ZVI amendments,but not with SC.Dimethylarsinic acid(DMA)concentrations in porewater and grain increased by a factor of 4.9 and 3.3,respectively,with ZVI amendment.The three amendments affected grain concentrations of iAs,DMA and Cd mainly by modulating their translocation within plant and the levels of As(Ⅲ),silicon,dissolved organic carbon,iron or Cd in porewater.All three amendments(SC,Mg/SC and ZVI)have the potential to simultaneously mitigate Cd and iAs accumulation in rice grain,although the pathways are different.
查看更多>>摘要：Nowadays,it is still a challenge to prepared high efficiency and low cost formaldehyde(HCHO)removal catalysts in order to tackle the long-living indoor air pollution.Herein,δ-MnO2 is successfully synthesized by a facile ozonation strategy,where Mn2+is oxidized by ozone(O3)bubble in an alkaline solution.It presents one of the best catalytic proper-ties with a low 100％conversion temperature of 85℃ for 50 ppm of HCHO under a GHSV of 48,000 mL/(g·hr).As a comparison,more than 6 times far longer oxidation time is needed if O3 is replaced by O2.Characterizations show that ozonation process generates a differ-ent intermediate of tetragonal β-HMnO2,which would favor the quick transformation into the final product δ-MnO2,as compared with the relatively more thermodynamically stable monoclinic y-HMnO2 in the O2 process.Finally,HCHO is found to be decomposed into CO2 via formate,dioxymethylene and carbonate species as identified by room temperature in-situ diffuse reflectance infrared fourier transform spectroscopy.All these results show great potency of this facile ozonation routine for the highly active δ-MnO2 synthesis in order to remove the HCHO contamination.
查看更多>>摘要：Ball milling is an environmentally friendly technology for the remediation of petroleum-contaminated soil(PCS),but the cleanup of organic pollutants requires a long time,and the post-remediation soil needs an economically viable disposal/reuse strategy due to its vast volume.The present paper develops a ball milling process under oxygen atmosphere to enhance PCS remediation and reuse the obtained carbonized soil(BCS-O)as wastew-ater treatment materials.The total petroleum hydrocarbon removal rates by ball milling under vacuum,air,and oxygen atmospheres are 39.83％,55.21％,and 93.84％,respectively.The Langmuir and pseudo second-order models satisfactorily describe the adsorption ca-pacity and behavior of BCS-O for transition metals.The Cu2+,Ni2+,and Mn2+adsorbed onto BCS-O were mainly bound to metal carbonates and metal oxides.Furthermore,BCS-O can effectively activate persulfate(PDS)oxidation to degrade aniline,while BCS-O loaded with transition metal(BCS-O-Me)shows better activation efficiency and reusability.BCS-O and BCS-O-Me activated PDS oxidation systems are dominated by 1O2 oxidation and electron transfer.The main active sites are oxygen-containing functional groups,vacancy defects,and graphitized carbon.The oxygen-containing functional groups and vacancy defects pri-marily activate PDS to generate 1O2 and attack aniline.Graphitized carbon promotes aniline degradation by accelerating electron transfer.The paper develops an innovative strategy to simultaneously realize efficient remediation of PCS and sequential reuse of the post-remediation soil.
查看更多>>摘要：Microplastics(MPs)are of particular concern due to their ubiquitous occurrence and propen-sity to interact and concentrate various waterborne contaminants from aqueous surround-ings.Studies on the interaction and joint toxicity of MPs on engineered nanoparticles(ENPs)are exhaustive,but limited research on the effect of MPs on the properties of ENPs in multi-solute systems.Here,the effect of MPs on adsorption ability of ENPs to antibiotics was in-vestigated for the first time.The results demonstrated that MPs enhanced the adsorption affinity of ENPs to antibiotics and MPs before and after aging showed different effects on ENPs.Aged polyamide prevented aggregation of ZnONPs by introducing negative charges,whereas virgin polyamide affected ZnONPs with the help of electrostatic attraction.FT-IR and XPS analyses were used to probe the physicochemical interactions between ENPs and MPs.The results showed no chemical interaction and electrostatic interaction was the dom-inant force between them.Furthermore,the adsorption rate of antibiotics positively corre-lated with pH and humic acid but exhibited a negative correlation with ionic strength.Our study highlights that ENPs are highly capable of accumulating and transporting antibiotics in the presence of MPs,which could result in a widespread distribution of antibiotics and an expansion of their environmental risks and toxic effects on biota.It also improves our understanding of the mutual interaction of various co-existing contaminants in aqueous environments.
查看更多>>摘要：Due to their resistance to degradation,wide distribution,easy diffusion and potential uptake by organisms,microplastics(MPs)pollution has become a major environmental concern.In this study,PEG-modified Fe3O4 magnetic nanoparticles demonstrated superior adsorption efficiency against polyethylene(PE)microspheres compared to other adsorbents(bare Fe3O4,PEI/Fe3O4 and CA/Fe3O4).The maximum adsorption capacity of PE was found to be 2203 mg/g by adsorption isotherm analysis.PEG/Fe3O4 maintained a high adsorption capacity even at low temperature(5℃,2163 mg/g),while neutral pH was favorable for MP adsorption.The presence of anions(Cl-,SO42-,HCO3,NO3-)and of humic acids inhibited the adsorption of MPs.It is proposed that the adsorption process was mainly driven by intermolecular hy-drogen bonding.Overall,the study demonstrated that PEG/Fe3O4 can potentially be used as an efficient control against MPs,thus improving the quality of the aquatic environment and of our water resources.
查看更多>>摘要：Innately designed to induce physiological changes,pharmaceuticals are foreknowingly haz-ardous to the ecosystem.Advanced oxidation processes(AOPs)are recognized as a set of contemporary and highly efficient methods being used as a contrivance for the removal of pharmaceutical residues.Since reactive oxygen species(ROS)are formed in these processes to interact and contribute directly toward the oxidation of target contaminant(s),a profound insight regarding the mechanisms of ROS leading to the degradation of pharmaceuticals is fundamentally significant.The conceptualization of some specific reaction mechanisms allows the design of an effective and safe degradation process that can empirically reduce the environmental impact of the micropollutants.This review mainly deliberates the mech-anistic reaction pathways for ROS-mediated degradation of pharmaceuticals often leading to complete mineralization,with a focus on acetaminophen as a drug waste model.
查看更多>>摘要：In this study,an efficient stabilizer material for cadmium(Cd2+)treatment was successfully prepared by simply co-milling olivine with magnesite.Several analytical methods including XRD,TEM,SEM and FTIR,combined with theoretical calculations(DFT),were used to inves-tigate mechanochemical interfacial reaction between two minerals,and the reaction mech-anism of Cd removal,with ion exchange between Cd2+and Mg2+as the main pathway.A fixation capacity of Cd2+as high as 270.61 mg/g,much higher than that of the pristine min-erals and even the individual/physical mixture of milled olivine and magnesite,has been obtained at optimized conditions,with a neutral pH value of the solution after treatment to allow its direct discharge.The as-proposed Mg-based stabilizer with various advantages such as cost benefits,green feature etc.,will boosts the utilization efficiency of natural min-erals over the elaborately prepared adsorbents.
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