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：Arsenic-related oxidative stress and resultant diseases have attracted global concern,while longitudinal studies are scarce.To assess the relationship between arsenic exposure and systemic oxidative damage,we performed two repeated measures among 5236 observations(4067 participants)in the Wuhan-Zhuhai cohort at the baseline and follow-up after 3 years.Urinary total arsenic,biomarkers of DNA oxidative damage(8-hydroxy-2'-deoxyguanosine(8-OHdG)),lipid peroxidation(8-isoprostaglandin F2alpha(8-isoPGF2α)),and protein oxida-tive damage(protein carbonyls(PCO))were detected for all observations.Here we used lin-ear mixed models to estimate the cross-sectional and longitudinal associations between ar-senic exposure and oxidative damage.Exposure-response curves were constructed by uti-lizing the generalized additive mixed models with thin plate regressions.After adjusting for potential confounders,arsenic level was significantly and positively related to the levels of global oxidative damage and their annual increased rates in dose-response manners.In cross-sectional analyses,each 1％increase in arsenic level was associated with a 0.406％(95％confidence interval(CI):0.379％to 0.433％),0.360％(0.301％to 0.420％),and 0.079％(0.055％to 0.103％)increase in 8-isoPGF2α,8-OHdG,and PCO,respectively.More importantly,arsenic was further found to be associated with increased annual change rates of 8-isoPGF2α(β:0.147;95％CI:0.130 to 0.164),8-OHdG(0.155;0.118 to 0.192),and PCO(0.050;0.035 to 0.064)in the longitudinal analyses.Our study suggested that arsenic exposure was not only positively related with global oxidative damage to lipid,DNA,and protein in cross-sectional analy-ses,but also associated with annual increased rates of these biomarkers in dose-dependent manners.
查看更多>>摘要：This study used steel slag,fly ash,and metakaolin as raw materials(SFM materials)to cre-ate silica-alumina-based geopolymers that can solidify Hg2+when activated with sodium-based water glass.The experiments began with a triangular lattice point mixing design ex-periment,and the results were fitted,analyzed,and predicted.The optimum SFM material mass ratio was found to be 70％steel slag,25％fly ash,and 5％metakaolin.The optimum modulus of the activator was identified by comparing the unconfined compressive strength and solidifying impact on Hg2+of geosynthetics with different modulus.The SFM geopoly-mer was then applied in the form of potting to cure the granulated mercury tailings.The inclusion of 50％SFM material generated a geosynthetic that reduced mercury transport to the surface soil by roughly 90％.The mercury concentration of herbaceous plant samples was also reduced by 78％.It indicates that the SFM material can effectively attenuate the migration transformation of mercury.Finally,characterization methods such as XPS and FTIR were used to investigate the mechanism of Hg2+solidification by geopolymers gen-erated by SFM materials.The possible solidification mechanisms were proposed as alka-line environment-induced mercury precipitation,chemical bonding s,surface adsorption of Hg2+and its precipitates by the geopolymer,and physical encapsulation.
查看更多>>摘要：Salinity was considered to have effects on the characteristics,performance microbial com-munities of aerobic granular sludge.This study investigated granulation process with grad-ual increase of salt under different gradients.Two identical sequencing batch reactors were operated,while the influent of Ra and Rb was subjected to stepwise increments of NaCl con-centrations(0-4 g/L and 0-10 g/L).The presence of filamentous bacteria may contribute to granules formed under lower salinity conditions,potentially leading to granules fragmenta-tion.Excellent removal efficiency achieved in both reactors although there was a small accu-mulation of nitrite in Rb at later stages.The removal efficiencies of chemical oxygen demand(COD),total nitrogen(TN),and total phosphorus(TP)in Ra were 95.31％,93.70％and 88.66％,while the corresponding removal efficiencies in Rb were 94.19％,89.79％and 80.74％.Salinity stimulated extracellular polymeric substances(EPS)secretion and enriched EPS producing bacteria to help maintain the integrity and stability of the aerobic granules.Heterotrophic nitrifying bacteria were responsible for NH4+-N and NO2--N oxidation of salinity systems and large number of denitrifying bacteria were detected,which ensure the high removal efficiency of TN in the systems.
查看更多>>摘要：The anaerobic acid production experiments were conducted with the pretreated kitchen waste under pH adjustment.The results showed that pH 8 was considered to be the most suitable condition for acid production,especially for the formation of acetic acid and pro-pionic acid.The average value of total volatile fatty acid at pH 8 was 8814 mg COD/L,1.5 times of that under blank condition.The average yield of acetic acid and propionic acid was 3302 mg COD/L and 2891 mg COD/L,respectively.The activities of key functional enzymes such as phosphotransacetylase,acetokinase,oxaloacetate transcarboxylase and succinyl-coA transferase were all enhanced.To further explore the regulatory mechanisms within the system,the distribution of microorganisms at different levels in the fermentation sys-tem was obtained by microbial sequencing,results indicating that the relative abundances of Clostridiales,Bacteroidales,Chloroflexi,Clostridium,Bacteroidetes and Propionibacteriales,which were great contributors for the hydrolysis and acidification,increased rapidly at pH 8 com-pared with the blank group.Besides,the proportion of genes encoding key enzymes was generally increased,which further verified the mechanism of hydrolytic acidification and acetic acid production of organic matter under pH regulation.
Faris M.HamdiNamuun GanbatAli AltaeeAkshaya K.Samal...
424-450页
查看更多>>摘要：The electrokinetic(EK)process has been proposed for soil decontamination from heavy metals and organic matter.The advantages of the EK process include the low operating energy,suitability for fine-grained soil decontamination,and no need for excavation.Dur-ing the last three decades,enhanced and hybrid EK systems were developed and tested for improving the efficiency of contaminants removal from soils.Chemically enhanced-EK processes exhibited excellent efficiency in removing contaminants by controlling the soil pH or the chemical reaction of contaminants.EK hybrid systems were tested to overcome environmental hurdles or technical drawbacks of decontamination technologies.Hybridiza-tion of the EK process with phytoremediation,bioremediation,or reactive filter media(RFM)improved the remediation process performance by capturing contaminants or facilitating biological agents'movement in the soil.Also,EK process coupling with solar energy was proposed to treat off-grid contaminated soils or reduce the EK energy requirements.This study reviews recent advancements in the enhancement and hybrid EK systems for soil remediation and the type of contaminants targeted by the process.The study also cov-ered the impact of operating parameters,imperfect pollution separation,and differences in the physicochemical characteristics and microstructure of soil/sediment on the EK per-formance.Finally,a comparison between various remediation processes was presented to highlight the pros and cons of these technologies.
查看更多>>摘要：Ketoprofen(KET),as a non-steroidal anti-inflammatory drug frequently detected in aqueous environments,is a threat to human health due to its accumulation and low biodegradabil-ity,which requires the transformation and degradation of KET in aqueous environments.In this paper,the reaction process of ozone-initiated KET degradation in water was investi-gated using density functional theory(DFT)method at the M06-2X/6-311++g(3df,2p)//M06-2X/6-31+g(d,p)level.The detailed reaction path of KET ozonation is proposed.The thermo-dynamic results show that ozone-initiated KET degradation is feasible.Under ultraviolet ir-radiation,the reaction of ozone with water can also produce OH radicals(HO)that can react with KET.The degradation reaction of KET caused by HO·was further studied.The kinetic calculation illustrates that the reaction rate(1.99 x 10-1(mol/L)-1 sec-1)of KET ozonation is relatively slow,but the reaction rate of HO reaction is relatively high,which can further im-prove the degradation efficiency.On this basis,the effects of pollutant concentration,ozone concentration,natural organic matter,and pH value on degradation efficiency under UV/O3 process were analyzed.The ozonolysis reaction of KET is not sensitive to pH and is basically unaffected.Finally,the toxicity prediction of oxidation compounds produced by degradation reaction indicates that most of the degradation products are harmless,and a few products containing benzene rings are still toxic and have to be concerned.This study serves as a the-oretical basis for analyzing the migration and transformation process of anti-inflammatory compounds in the water environment.
查看更多>>摘要：Lake Baiyangdian is one of China's largest macrophyte-derived lakes,facing severe chal-lenges related to water quality maintenance and eutrophication prevention.Dissolved or-ganic matter(DOM)was a huge carbon pool and its abundance,property,and transforma-tion played important roles in the biogeochemical cycle and energy flow in lake ecosystems.In this study,Lake Baiyangdian was divided into four distinct areas:Unartificial Area(UA),Village Area(VA),Tourism Area(TA),and Breeding Area(BA).We examined the diversity of DOM properties and sources across these functional areas.Our findings reveal that DOM in this lake is predominantly composed of protein-like substances,as determined by exci-tation-emission matrix and parallel factor analysis(EEM-PARAFAC).Notably,the exoge-nous tyrosine-like component C1 showed a stronger presence in VA and BA compared to UA and TA.Ultrahigh-resolution mass spectrometry(FT-ICR MS)unveiled a similar DOM molecular composition pattern across different functional areas due to the high relative abundances of lignan compounds,suggesting that macrophytes significantly influence the material structure of DOM.DOM properties exhibited specific associations with water qual-ity indicators in various functional areas,as indicated by the Mantel test.The connections between DOM properties and NO3-N and NH3-N were more pronounced in VA and BA than in UA and TA.Our results underscore the viability of using DOM as an indicator for more precise and scientific water quality management.
查看更多>>摘要：Nano zero-valent iron(nZVI)is widely used in soil remediation due to its high reactivity.However,the easy agglomeration,poor antioxidant ability and passivation layer of Fe-Cr coprecipitates of nZVI have limited its application scale in Cr-contaminated soil remedia-tion,especially in high concentration of Cr-contaminated soil.Herein,we found that the carboxymethyl cellulose on nZVI particles could increase the zeta potential value of soil and change the phase of nZVI.Along with the presence of biochar,97.0％and 96.6％Cr im-mobilization efficiency through CMC-nZVI/BC were respectively achieved in high and low concentrations of Cr-contaminated soils after 90-days remediation.In addition,the immobi-lization efficiency of Cr(Ⅵ)only decreased by 5.1％through CMC-nZVI/BC treatment after 10 weeks aging in air,attributing to the strong antioxidation ability.As for the surrounding Cr-contaminated groundwater,the Cr(Ⅵ)removal capacity of CMC-nZVI/BC was evaluated un-der different reaction conditions through column experiments and COMSOL Multiphysics.CMC-nZVI/BC could efficiently remove 85％of Cr(Ⅵ)in about 400 hr when the initial Cr(Ⅵ)concentration was 40 mg/L and the flow rate was 0.5 mL/min.This study demonstrates that uniformly dispersed CMC-nZVI/BC has an excellent remediation effect on different concen-trations of Cr-contaminated soils.
查看更多>>摘要：Dissolved copper and iron ions are regarded as friendly and economic catalysts for perox-ymonosulfate(PMS)activation,however,neither Cu(Ⅱ)nor Fe(Ⅲ)shows efficient catalytic performance because of the slow rates of Cu(Ⅱ)/Cu(Ⅰ)and Fe(Ⅲ)/Fe(Ⅱ)cycles.Innovatively,we observed a significant enhancement on the degradation of organic contaminants when Cu(Ⅱ)and Fe(Ⅲ)were coupled to activate PMS in borate(BA)buffer.The degradation ef-ficiency of Rhodamine B(RhB,20 μmol/L)reached up to 96.3％within 10 min,which was higher than the sum of individual Cu(Ⅱ)-and Fe(Ⅲ)-activated PMS process.Sulfate radi-cal,hydroxyl radical and high-valent metal ions(i.e.,Cu(Ⅲ)and Fe(Ⅳ))were identified as the working reactive species for RhB removal in Cu(Ⅱ)/Fe(Ⅲ)/PMS/BA system,while the last played a predominated role.The presence of BA dramatically facilitated the reduction of Cu(Ⅱ)to Cu(Ⅰ)via chelating with Cu(Ⅱ)followed by Fe(Ⅲ)reduction by Cu(l),resulting in enhanced PMS activation by Cu(Ⅰ)and Fe(Ⅱ)as well as accelerated generation of reactive species.Additionally,the strong buffering capacity of BA to stabilize the solution pH was satisfying for the pollutants degradation since a slightly alkaline environment favored the PMS activation by coupling Cu(Ⅱ)and Fe(Ⅲ).In a word,this work provides a brand-new in-sight into the outstanding PMS activation by homogeneous bimetals and an expanded ap-plication of iron-based advanced oxidation processes in alkaline conditions.
查看更多>>摘要：The land application of livestock manure has been widely acknowledged as a beneficial ap-proach for nutrient recycling and environmental protection.However,the impact of resid-ual antibiotics,a common contaminant of manure,on the degradation of organic com-pounds and nutrient release in Eutric Regosol is not well understood.Here,we studied,how oxytetracycline(OTC)and ciprofloxacin(CIP)affect the decomposition,microbial com-munity structure,extracellular enzyme activities and nutrient release from cattle and pig manure using litterbag incubation experiments.Results showed that OTC and CIP greatly inhibited livestock manure decomposition,causing a decreased rate of carbon(28％-87％),nitrogen(15％-44％)and phosphorus(26％-43％)release.The relative abundance of gram-negative(G-)bacteria was reduced by 4.0％-13％while fungi increased by 7.0％-71％dur-ing a 28-day incubation period.Co-occurrence network analysis showed that antibiotic ex-posure disrupted microbial interactions,particularly among G-bacteria,G+bacteria,and actinomycetes.These changes in microbial community structure and function resulted in decreased activity of urease,β-1,4-N-acetyl-glucosaminidase,alkaline protease,chitinase,and catalase,causing reduced decomposition and nutrient release in cattle and pig ma-nures.These findings advance our understanding of decomposition and nutrient recycling from manure-contaminated antibiotics,which will help facilitate sustainable agricultural production and soil carbon sequestration.
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