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When nets meet environmental DNA metabarcoding:integrative approach to unveil invertebrate community patterns of hypersaline lakes
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作者 Matthew A.CAMPBELL Alex LAINI +2 位作者 Nicole E.WHITE Morten E.ALLENTOFT Mattia SACCÒ 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2023年第4期1331-1340,共10页
Saline and hypersaline wetlands account for almost half of the volume of inland water globally.They provide pivotal habitat for a vast range of species,including crucial ecosystem services for humans such as carbon si... Saline and hypersaline wetlands account for almost half of the volume of inland water globally.They provide pivotal habitat for a vast range of species,including crucial ecosystem services for humans such as carbon sink storage and extractive resource reservoirs.Despite their importance,effective ecological assessment is in its infancy compared to current conventional surveys carried out in freshwater ecosystems.The integration of environmental DNA(eDNA)analysis and traditional techniques has the potential to transform biomonitoring processes,particularly in remote and understudied saline environments.In this context,this preliminary study aims to explore the potential of eDNA coupled with conventional approaches by targeting five hypersaline lakes at Rottnest Island(Wadjemup)in Western Australia.We focused on the invertebrate community,a widely accepted key ecological indicator to assess the conservational status in rivers and lakes.The combination of metabarcoding with morphology-based taxonomic analysis described 16 taxa belonging to the orders Anostraca,Diptera,Isopoda,and Coleoptera.DNA-based diversity assessment revealed more taxa at higher taxonomic resolution than the morphology-based taxonomic analysis.However,certain taxa(i.e.,Ephydridae,Stratyiomidae,Ceratopogonidae)were only identified via net surveying.Overall,our results indicate that great potential resides in combining conventional net-based surveys with novel eDNA approaches in saline and hypersaline lakes.Indeed,urgent and effective conservational frameworks are required to contrast the enormous pressure that these ecosystems are increasingly facing.Further investigations at larger spatial temporal scales will allow consolidation of robust,reliable,and affordable biomonitoring frameworks in the underexplored world of saline wetlands. 展开更多
关键词 MACROINVERTEBRATE hypersaline e nvironmental DNA(eDNA) conservation ecological survey community composition
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室旁核H_(2)S对高盐性高血压大鼠内质网应激蛋白GRP78的影响
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作者 李宇恒 孙晓明 +5 位作者 张东东 苏嘉璐 陈淑月 尤清欣 谷青芸 梁衍锋 《黑龙江医药科学》 2024年第3期1-5,共5页
目的:通过外源给予高盐性高血压大鼠室旁核(paraventricular nucleus,PVN)硫化氢(hydrogen sulfide,H 2S)供体GYY4137,观察PVN中GRP78的蛋白表达含量变化,探讨室旁核H 2S对高盐性高血压GRP78的影响。方法:雄性Dahl盐敏感大鼠40只,随机分... 目的:通过外源给予高盐性高血压大鼠室旁核(paraventricular nucleus,PVN)硫化氢(hydrogen sulfide,H 2S)供体GYY4137,观察PVN中GRP78的蛋白表达含量变化,探讨室旁核H 2S对高盐性高血压GRP78的影响。方法:雄性Dahl盐敏感大鼠40只,随机分成4组,即正常对照组、正常给药组、模型组和模型给药组。分别饲喂正常盐饲料(0.3%NaCl)和高盐饲料(8%NaCl)4周后,双侧PVN插管持续微量注射GYY4137,采用尾动脉无创测量平均动脉压(mean arterial pressure,MAP),ELISA法检测血浆去甲肾上腺素(norepinephrine,NE),采用免疫组织化学技术及Western blotting法检测PVN中GRP78蛋白表达。结果:(1)与正常对照组相比,高盐模型组的MAP、血浆NE水平明显升高(P<0.01);与高盐模型组相比,高盐干预组MAP、血浆NE水平明显下降(P<0.01);(2)与正常对照组相比,高盐模型组室旁核中GRP78的蛋白表达明显升高(P<0.01);与高盐模型组相比,高盐干预组室旁核中GRP78的蛋白表达明显下降(P<0.01)。结论:室旁核H 2S可通过降低外周交感神经活动改善高盐性高血压,其机制可能与抑制室旁核内质网应激有关。 展开更多
关键词 室旁核 硫化氢 高盐性高血压 GRP78
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磺化聚砜改性阳离子交换膜用于高盐乙二醇废液电渗析脱盐
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作者 任璐瑶 陈青柏 +1 位作者 王建友 王悦 《水处理技术》 CAS CSCD 北大核心 2024年第8期22-27,共6页
深水油气田开采过程中普遍需要使用乙二醇(EG)作为水合物抑制剂,副产大量高盐乙二醇废液(SEGW),对其进行除盐回用具有重要的经济价值和生态环境效益。SEGW回收系统的脱盐工序通常采用热法蒸馏,以离子选择性电迁移为除盐机制的电渗析(ED... 深水油气田开采过程中普遍需要使用乙二醇(EG)作为水合物抑制剂,副产大量高盐乙二醇废液(SEGW),对其进行除盐回用具有重要的经济价值和生态环境效益。SEGW回收系统的脱盐工序通常采用热法蒸馏,以离子选择性电迁移为除盐机制的电渗析(ED)技术有望显著简化脱盐工艺、降低投资成本和运行能耗,具有较好应用潜力。但常规ED技术用于SEGW脱盐时存在着盐迁移和EG泄漏间的trade-off效应,阻碍了实际应用。为了减少ED脱盐过程中EG的损失,提出采用磺化聚砜(SPSF)对阳离子交换膜(CEM)进行表面改性,SPSF改性层的引入使得CEM表面形成致密离子传输通道,基于空间位阻和电荷效应促使EG分子与水合阳离子的迁移速率形成显著差异,赋予了改性CEM良好的阻醇脱盐性能。实验结果表明,对于EG含量为60%的SEGW,改性膜在达到与原膜同等脱盐效率时可降低61%的EG损失。 展开更多
关键词 高盐乙二醇废液 阳离子交换膜 磺化聚砜 电渗析脱盐 阻醇
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青藏高原尕斯库勒盐湖可培养嗜盐耐盐微生物的群落结构与分离方法对比研究
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作者 马欣 马想蓉 +3 位作者 朱德锐 李轩领 沈国平 邢江娃 《海洋与湖沼》 CAS CSCD 北大核心 2024年第4期916-930,共15页
嗜盐耐盐微生物在生物医药、生物酶等领域有着重要的应用潜力。为更好地利用青藏高原的盐湖微生物资源,以青藏高原尕斯库勒盐湖为研究对象,借助Illumina MiSeq测序平台分析盐湖微生物的群落组成,并采用寡营养培养、富集培养和梯度稀释... 嗜盐耐盐微生物在生物医药、生物酶等领域有着重要的应用潜力。为更好地利用青藏高原的盐湖微生物资源,以青藏高原尕斯库勒盐湖为研究对象,借助Illumina MiSeq测序平台分析盐湖微生物的群落组成,并采用寡营养培养、富集培养和梯度稀释等方法对嗜盐耐盐微生物进行大规模分离与培养。结果表明,高通量测序获得明确分类地位的细菌有30门50纲81目162科417属,古菌6门7纲9目15科39属。细菌优势属类群以矿生菌属(Fodinibius)和纤维单胞菌属(Gracilimonas)为主。古菌优势属类群以盐红菌属(Halorubrum)为主;纯培养法共获得502株嗜盐耐盐微生物,其中嗜盐耐盐细菌472株,分布在4门5纲7目9科13属,优势属为芽孢杆菌属(Bacillus)和盐单胞菌属(Halomonas),其中巴纽尔斯菌(Balneolota)门Fodinibius属可培养细菌是首次从盐湖中分离得到;嗜盐古菌30株,分布在1门1纲1目3科5属,优势属为Halorubrum。对比不同培养条件下的分离结果发现,1/2 TSA培养基和1/2 RCA培养基更有利于嗜盐耐盐细菌的分离,最佳富集天数为7天和30天,稀释梯度10-1和10-2可与未稀释样本互为补充来增加可培养嗜盐耐盐细菌的多样性;1/102216E培养基更适合于古菌的分离,最佳富集天数为7天和14天,且样本不稀释分离效果更好。研究结果可为青藏高原盐湖可培养微生物的分离方案优化提供理论依据和数据支撑。 展开更多
关键词 尕斯库勒盐湖 嗜盐耐盐微生物 分离培养 生物多样性 高盐环境
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高盐反硝化中试试验研究
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作者 陈博之 王林刚 +3 位作者 卞为林 蒋昊 徐汝超 王晴晴 《广州化工》 CAS 2024年第3期112-114,共3页
江苏某印染企业生产废水含有大量硝酸盐,出水总氮不达标。采用树脂吸附工艺对该厂生产废水进行脱氮中试实验,树脂再生产生高盐高硝态氮脱附液,主要对树脂脱附后产生的高盐高硝态氮废水进行反硝化处理,通过菌剂强化污泥的培养驯化,在4.7... 江苏某印染企业生产废水含有大量硝酸盐,出水总氮不达标。采用树脂吸附工艺对该厂生产废水进行脱氮中试实验,树脂再生产生高盐高硝态氮脱附液,主要对树脂脱附后产生的高盐高硝态氮废水进行反硝化处理,通过菌剂强化污泥的培养驯化,在4.7%盐分,进水硝态氮为300 mg/L条件下,系统出水硝态氮在5 mg/L以下,总氮在15 mg/L以下,并且运行稳定,启动时间短。 展开更多
关键词 高盐 反硝化 菌剂
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Cladophora mats in a Crimean hypersaline lake:structure,dynamics,and inhabiting animals 被引量:2
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作者 Alexandr V.PRAZUKIN Elena V.ANUFRIIEVA Nickolai V.SHADRIN 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2018年第6期1930-1940,共11页
Filamentous green algae play an important functional role in element cycling and productivity in the diff erent water bodies. In hypersaline lakes and lagoons of the Crimea, filamentous green algae are present and for... Filamentous green algae play an important functional role in element cycling and productivity in the diff erent water bodies. In hypersaline lakes and lagoons of the Crimea, filamentous green algae are present and form bottom and floating mats that occupy large areas with high biomass, up to 4–5 kg(wet biomass)/m2. Cladophora spp. dominated in those mats. Five species of filamentous green algae(Chlorophyta) in Lake Chersonesskoye: C ladophora vadorum(Aresch.) Kütz., C. siwaschensis C. Meyer, C. echinus(Biasol.) Kütz., Ulothrix implexa(Kütz.) Kütz., Rhizoclonium tortuosum(Dillw.) Kütz., and seagrass(Angiospermae) R uppia cirrhosa(Petagna) Grande were found. Cladophora spp. and R. cirrhosa were found in the lake throughout the year, other types of algae were encountered episodically. In most cases the biomass of bottom mat exceeded that of the floating mat. In general, the total biomass of the bottom and floating mats in the lake areas at depths up to 30 cm was in a stable range of values from 100 to 290 mg(dry weight)/cm2. Animal and infusorian average abundance in mats reach high values: infusorians—up to 15 000 000 ind./m2, Cletocamptus retrogressus(Copepoda, Harpacticoida)—up to 730 000 ind./m2, Eucypris mareotica(Ostracoda)—up to 91 000 ind./m2 and Chironomidae larvae(Insecta, Diptera)—up to 140 ind./m2. Those values were much higher than in the plankton. 展开更多
关键词 green ALGAE MATS hypersaline lake PHOTOSYNTHESIS invertebrates
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Dormant stages of crustaceans as a mechanism of propagation in the extreme and unpredictable environment in the Crimean hypersaline lakes 被引量:1
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作者 Nickolai V.SHADRIN Elena V.ANUFRIIEVA +1 位作者 Francisco AMAT Oleg Yu.EREMIN 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2015年第6期1362-1367,共6页
A pool of dormant stages of planktonic organisms in saline lakes is a substantial component in the plankton communities;we need to take it into account to understand plankton dynamics.Hypersaline water bodies in Crime... A pool of dormant stages of planktonic organisms in saline lakes is a substantial component in the plankton communities;we need to take it into account to understand plankton dynamics.Hypersaline water bodies in Crimea,the largest peninsula in the Black Sea,constitute a very characteristic and peculiar habitat type in the region.We examined the presence of crustacean resting stages in sediments of dried up sites of the Crimean hypersaline lakes.Sediment samples were taken in 9 different lakes.Experiments performed on the hatching of these resting stages showed the presence of Moina salina(Cladocera),parthenogenetic Artemia and Artemia urmiana(Anostraca),Eucypris mareotica( inflata)(Ostracoda),and Cletocamptus retrogressus(Harpacticoida).Comparing the experimental results obtained with clean dried brine shrimp cysts and those kept in sediment samples,it was noted that clean cysts hatched much faster than those from sediments did.Some components in bottom sediments slow down and desynchronize hatching from resting eggs in different groups of crustaceans.The sediments of different lakes inhibited the nauplii output from Artemia and ostracod resting eggs to different degrees.More data are needed before we can discuss the reasons of this inhibition.The nonsynchronous output of active stages from the bottom resting ones may be an adaptation that allows crustacean species to exist in extreme and unpredictably changing environments,avoiding the risk that all may emerge at once under unsuitable conditions. 展开更多
关键词 resting stages hypersaline waters CRUSTACEA CRIMEA SEDIMENT
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Chemical composition and Pb(II)binding of dissolved organic matter in a hypersaline lake in China 被引量:1
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作者 Keli YANG Yaoling ZHANG +1 位作者 Yaping DONG Wu LI 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2022年第1期113-127,共15页
Dissolved organic matter(DOM)plays a vital role in promoting carbon and nutrient cycling.It is a food source for organisms and controls the migration and transformation of trace metals and other contaminants in aquati... Dissolved organic matter(DOM)plays a vital role in promoting carbon and nutrient cycling.It is a food source for organisms and controls the migration and transformation of trace metals and other contaminants in aquatic systems.The contributions of aquatic DOM to the environment and ecology of a system are closely related to its abundance and chemical structure.In this study,the chemical composition and binding properties of DOM in a hypersaline lake watershed were investigated for the fi rst time using dissolved organic carbon(DOC)analysis,absorption spectroscopy,Fourier transform infrared spectroscopy,pyrolysis-GC-MS(Py-GC-MS),and fl uorescence parallel factor(PARAFAC)analysis combined with Pb(II)titration techniques.The results showed that DOM from the tributaries that fl owed into the lake had a lower DOC content,higher molecular weight,and higher specifi c UV absorbance than the DOM in lake water.Protein-like fl uorophores were mainly found in tributary and lake surface water DOM(LSDOM)and humic-like substances were abundant in lake groundwater DOM(LGDOM).Using this multi-methodological approach,we found that the DOM from the hypersaline lake watershed was mainly from microbial origins,and consisted of aromatics,carbohydrates,and aliphatics.The results from quantitative analysis showed that DOM from the infl owing tributaries contained more aromatics,lower carbohydrates,and lower aliphatics than DOM in the lake.Monocyclic aromatic hydrocarbons and carbohydrates were more abundant in LSDOM than LGDOM.The results from the Pb(II)titration technique coupled with PARAFAC analysis suggested that PARAFAC-derived components had relatively low condition stability constants(log K_(M)<2).Of the two types of lake DOM,the LGDOM had a higher Pb(II)binding potential than the LSDOM.From this study we have improved our understanding of how DOM within a hypersaline lake watershed varies in its composition and potential to bind with metals. 展开更多
关键词 dissolved organic matter hypersaline lake watershed composition parallel factor analysis Pb(II)titration
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Copepods in Hypersaline Waters Worldwide:Diversity,Environmental,Social,and Economic Roles 被引量:2
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作者 Elena ANUFRIIEVA 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2014年第S1期43-45,共3页
1 Introduction Copepods are a group of small crustaceans,which play an important ecological role in aquatic ecosystems.They occupy different ecological niches in aquatic food webs,contributes to biogenic element cycle... 1 Introduction Copepods are a group of small crustaceans,which play an important ecological role in aquatic ecosystems.They occupy different ecological niches in aquatic food webs,contributes to biogenic element cycles,and transfer of organic matter from primary producers to higher secondary consumers.Copepods also have the potential to 展开更多
关键词 Copepods in hypersaline Waters Worldwide
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Study on Corrosion Resistance of Ni-W-P Coating in Hypersaline Brine
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作者 SHAO Qianqian ZHANG Xin +1 位作者 CUI Zhaojie TAN Xianfeng 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2014年第S1期369-370,共2页
Brine resource is rich in China,but its exploitation has been a problem.Hypersaline brine will corrode equipment and materials seriously during the brine exploitation and transportation.The corrosion problem can cause... Brine resource is rich in China,but its exploitation has been a problem.Hypersaline brine will corrode equipment and materials seriously during the brine exploitation and transportation.The corrosion problem can cause great 展开更多
关键词 Ni-W-P coating corrosion resistance hypersaline water.
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Characteristic of COD removal and sludge settleability in biological treatment of hypersaline wastewater
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作者 祝贵兵 彭永臻 +2 位作者 孟祥胜 崔有为 孙亚男 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2006年第5期632-634,共3页
In order to investigate the feasibility of biological treatment of bypersaline wastewater produced from toilet flushing with seawater at low temperature, pilot-scale studies were established with plug-flow activated s... In order to investigate the feasibility of biological treatment of bypersaline wastewater produced from toilet flushing with seawater at low temperature, pilot-scale studies were established with plug-flow activated sludge process at low temperature (5-9℃) based on bench-scale experiments. The critical salinity concentration of 30 g/L, which resulted from the cooperation results of the non-halophilic bacteria and the halophilic bacteria, was drawn in bench-scale experiment. Pilot-scale studies showed that high COD removal efficiency, higher than 85 %, was obtained at low temperature when 30 percent seawater [ seawater/(seawater + sewage) ] was introduced. The salinity improved the settleability of activated sludge, and average SV dropped down from 38% to 22. 5% after adding seawater. Sludge bulking could be forborne effectively because filamentous bacteria couldn't subsist under high salinity concentration. 展开更多
关键词 flushing lavatory with seawater hypersaline wastewater organic substrate removal sludge settleability pilot-scale study
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Nitrification-denitrification via nitrite pathway in biological treatment of hypersaline wastewater
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作者 祝贵兵 彭永臻 +1 位作者 孟祥胜 于德爽 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2008年第6期822-825,共4页
Pilot-scale studies on biological treatment of hypersaline wastewater at low temperature were conducted and results showed that seawater salinity had a strong negative effect on notrouomonas and nitrobaeter growth, bu... Pilot-scale studies on biological treatment of hypersaline wastewater at low temperature were conducted and results showed that seawater salinity had a strong negative effect on notrouomonas and nitrobaeter growth, but much more on the nitrobaeter. The nitrification action was mainly accomplished by nitrosomonas. Bench-scale experiments using two SBRs were carried out for further investigation under different conditions of salinities, ammonia loadings and temperatures. Biological nitrogen removal via nitrite pathway from wastewater containing 30 percent seawater was achieved, but the ammonia removal efficiency was strongly related not only to the influent ammonia loading at different salinities but also to temperatures. When the ratio of seawater to wastewater was 30 percent, and the ammonia loading was below the critical value of 0. 15 kgNH4 ^+ -N/( kgMLSS · d) , the ammonia removal efficiency via nitrite pathway was above 90 %. The critical level of ammonia loading was 0. 15, 0. 08 and 0. 03 kgNH4 ^+ -N/( kgMLSS · d) respectively at different temperatures of 30℃, 25℃ and 20℃ when the influent ammonia concentration was 60 - 80 mg/L and pH was 7.5 - 8.0. 展开更多
关键词 flushing lavatory with seawater hypersaline wastewater biological nitrogen removal nitrificationdenitrification via nitrite pathway bench-scale studies
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A Fresh Look at the Geobiology & Sedimentary Environments of the Hypersaline Great Salt Lake,USA
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作者 Kathleen NICOLL 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2014年第S1期94-95,共2页
1 Introduction The Great Salt Lake(GSL)is the defining hydrological feature of the Great Basin,North America’s largest desert--and it is the largest waterbody in the western USA.Despite the early(Eardley,1938)recogni... 1 Introduction The Great Salt Lake(GSL)is the defining hydrological feature of the Great Basin,North America’s largest desert--and it is the largest waterbody in the western USA.Despite the early(Eardley,1938)recognition of"bioherms,"algal layers,and mats covering hundreds of square km of lake area,these features have not been the 展开更多
关键词 LAKE Sedimentary Environments of the hypersaline Great Salt Lake USA A Fresh Look at the Geobiology
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Preliminary Characterization of a Cellulase Producing Bacterial Strain Isolated from a Romanian Hypersaline Lake
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作者 Robert Marian Ruginescu Roxana Cojoc +1 位作者 Madalin Enache Veronica Lazar 《Journal of Environmental Protection》 2018年第10期1066-1081,共16页
Cellulases are a group of enzymes that are used in many biotechnological processes. Since most of the enzymes synthesised by mesophilic microorganisms are unstable in industrial environments, it is necessary to direct... Cellulases are a group of enzymes that are used in many biotechnological processes. Since most of the enzymes synthesised by mesophilic microorganisms are unstable in industrial environments, it is necessary to direct research towards extremophile cellulolytic microorganisms because the enzymes synthesised by them are stable and active even in harsh physicochemical conditions. In the present investigation, our aim was to isolate and identify some microbial cellulolytic strains from a hypersaline lake located in Romania and to determine their optimal growth conditions. Of a total of 25 microbial strains isolated, only one extreme halotolerant bacterial strain was able to produce an endoglucanase. Based on molecular identification, we identified this cellulolytic strain as a species of Bacillus genus, most closely related to Bacillus zhangzhouensis. Optimal growth conditions were found to be at 15&deg;C, pH 7.5 and 2 M NaCl. Endoglucanase activity of this bacterial strain is influenced by both salinity and temperature. The most significant endoglucanase activity was detected in the presence of 3 M NaCl, after 72 h of incubation at 15&deg;C. In this situation, the amount of glucose released from a volume of 0.5 mL of 2% (w/v) carboxymethyl cellulose substrate is equivalent to 2.05 mg. In conclusion, this study represents the first preliminary characterization of a B. zhangzhouensis strain that has the ability to degrade cellulose and that demonstrates tolerance to high salt concentrations. 展开更多
关键词 Cellulases Cellulose Residues Bioconversion Cellulolytic Bacterial Strain hypersaline Lakes Salt-Tolerant Enzymes
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一株耐盐Cr(Ⅵ)还原菌的分离鉴定和还原特性研究 被引量:1
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作者 杨晓宇 靳宝林 +1 位作者 王熙宁 白林含 《四川大学学报(自然科学版)》 CAS CSCD 北大核心 2023年第1期173-180,共8页
为解决高无机盐废水中的铬(Chromium,Cr)的六价铬Cr(Ⅵ)污染问题,从高盐环境中分离得到一株Cr(Ⅵ)还原菌,命名为KL01,经分子鉴定为墓画大洋芽孢杆菌(Oceanobacillus picturae),通过对KL01的生理特征分析发现其为一株中度嗜盐菌.以SEM、... 为解决高无机盐废水中的铬(Chromium,Cr)的六价铬Cr(Ⅵ)污染问题,从高盐环境中分离得到一株Cr(Ⅵ)还原菌,命名为KL01,经分子鉴定为墓画大洋芽孢杆菌(Oceanobacillus picturae),通过对KL01的生理特征分析发现其为一株中度嗜盐菌.以SEM、TEM结合能谱对Cr(Ⅵ)胁迫下的菌体进行了检测,发现KL01对Cr仅有少量的胞内吸附,无胞外吸附,且高浓度的Cr(Ⅵ)可使菌体长度增加.通过KL01在不同环境条件还原Cr(Ⅵ)能力的影响研究,发现其在有氧条件下,30℃,pH 7.5,NaCl浓度6%时,具有较好的还原Cr(Ⅵ)的效果;当Cr(Ⅵ)浓度为20 mg/L时,对其的还原率可达96%以上.这表明KL01对高盐环境中的Cr(Ⅵ)具有良好的去除效果,可用于处理高盐含Cr(Ⅵ)废水. 展开更多
关键词 铬污染 高盐环境 墓画大洋芽孢杆菌 生物还原
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高盐废水的处理研究进展 被引量:3
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作者 庄小仪 颜丙才 +1 位作者 陈彦梅 李风海 《山东化工》 CAS 2023年第6期100-101,107,共3页
工业的发展使高盐废水的排放量逐年增加。在对高盐废水来源和危害研究的基础上,从常规工艺(电解法、离子交换法、焚烧法和生物-化学法)、浓缩工艺(膜分离法、蒸发浓缩)、组合工艺和零排放工艺对高盐废水处理技术进行了系统的阐述。并对... 工业的发展使高盐废水的排放量逐年增加。在对高盐废水来源和危害研究的基础上,从常规工艺(电解法、离子交换法、焚烧法和生物-化学法)、浓缩工艺(膜分离法、蒸发浓缩)、组合工艺和零排放工艺对高盐废水处理技术进行了系统的阐述。并对高盐废水处理的发展趋势进行了展望。 展开更多
关键词 高盐废水 处理技术 进展
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高盐废水零排放工艺的应用与技改提升 被引量:1
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作者 吴维泰 廖祥翔 +1 位作者 韩钱维 张书培 《煤化工》 CAS 2023年第3期67-69,95,共4页
介绍了新疆宜化高盐废水零排放处理工艺及流程,针对该项目投运后存在的加热器结垢、系统真空度不足、离心机分盐后结晶盐水分高、化学清洗时管路腐蚀、分离器除雾丝网除雾效果差、水处理能力达不到设计值等问题,进行了相应的技术改造和... 介绍了新疆宜化高盐废水零排放处理工艺及流程,针对该项目投运后存在的加热器结垢、系统真空度不足、离心机分盐后结晶盐水分高、化学清洗时管路腐蚀、分离器除雾丝网除雾效果差、水处理能力达不到设计值等问题,进行了相应的技术改造和操作优化。改造后,单套装置水处理量由15 t/h提高至35 t/h,两套装置每年可减排废水、节约一次水32万t。 展开更多
关键词 高盐废水 零排放 水处理能力 三效强制循环蒸发浓缩结晶工艺 技术改造
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Diversity and connectedness of brine shrimp viruses in global hypersaline ecosystems
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作者 Xuan Dong Cixiu Li +13 位作者 Yiting Wang Tao Hu Fan Zhang Fanzeng Meng Meirong Gao Xuekai Han Guohao Wang Jiahao Qin Hans Nauwynck Edward CHolmes Patrick Sorgeloos Liying Sui Jie Huang Weifeng Shi 《Science China(Life Sciences)》 SCIE CAS CSCD 2024年第1期188-203,共16页
Brine shrimp(Artemia)has existed on Earth for 400 million years and has major ecological importance in hypersaline ecosystems.As a crucial live food in aquaculture,brine shrimp cysts have become one of the most import... Brine shrimp(Artemia)has existed on Earth for 400 million years and has major ecological importance in hypersaline ecosystems.As a crucial live food in aquaculture,brine shrimp cysts have become one of the most important aquatic products traded worldwide.However,our understanding of the biodiversity,prevalence and global connectedness of viruses in brine shrimp is still very limited.A total of 143 batches of brine shrimp(belonging to seven species)cysts were collected from six continents including 21 countries and more than 100 geographic locations worldwide during 1977–2019.In total,55 novel RNA viruses were identified,which could be assigned to 18 different viral families and related clades.Eleven viruses were dsRNA viruses,16 were+ssRNA viruses,and 28 were−ssRNA viruses.Phylogenetic analyses of the RNA-directed RNA polymerase(RdRp)showed that brine shrimp viruses were often grouped with viruses isolated from other invertebrates and fungi.Remarkably,most brine shrimp viruses were related to those from different hosts that might feed on brine shrimp or share the same ecological niche.A notable case was the novel brine shrimp noda-like virus 3,which shared 79.25%(RdRp)and 63.88%(capsid proteins)amino acid identity with covert mortality nodavirus(CMNV)that may cause losses in aquaculture.In addition,both virome composition and phylogenetic analyses revealed global connectedness in certain brine shrimp viruses,particularly among Asia and Northern America.This highlights the incredible species diversity of viruses in these ancient species and provides essential data for the prevalence of RNA viruses in the global aquaculture industry.More broadly,these findings provide novel insights into the previously unrecognized RNA virosphere in hypersaline ecosystems worldwide and demonstrate that human activity might have driven the global connectedness of brine shrimp viruses. 展开更多
关键词 brine shrimp ARTEMIA virus diversity novel virus discovery global connectedness hypersaline ecosystem
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Directional amine-based solvent extraction for simultaneous enhanced water recovery,salt separation and effective descaling from hypersaline brines
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作者 Yuyao Zhang Litao Jia +4 位作者 Jin Zhao Xuming Liu Shuyu Dong Chuanyang Liu Yuanyuan Cui 《Frontiers of Environmental Science & Engineering》 SCIE EI CSCD 2024年第3期83-92,共10页
The feasibility of simultaneous water recovery,salt separation and effective descaling of hypersaline brine was investigated by diisopropylamine(DIPA)-based directional solvent extraction(DSE),using diluted/concentrat... The feasibility of simultaneous water recovery,salt separation and effective descaling of hypersaline brine was investigated by diisopropylamine(DIPA)-based directional solvent extraction(DSE),using diluted/concentrated seawater with initial saline concentration range of 12–237 g/L at extraction temperatures of 5 and 15℃,respectively.The water recovery shows an obvious boundary at saline concentration of 115 g/L under dual effect of specific water extraction efficiency and extraction cycles.High Cl^(–) ion concentration in product water is in sharp contrast to the nearly complete removal of SO_(4)^(2–)and hardness ions,indicating that DIPA-based DSE process indeed achieved efficient separation and purification of Cl^(–) ion from hypersaline brines.Especially,the radical precipitation of Mg^(2+)and Ca^(2+)ions in form of Mg(OH)_(2)and CaCO_(3)demonstrates effective descaling potential,although it leads to more DIPA residues in dewatered raffinate than product water.Moreover,an exponential correlation between the Cl^(–) removal efficiency and specific water extraction efficiency further reveals the intrinsic relationship of water extraction process and transfer of Cl^(–) ion to the product water.Overall,the study provides a novel approach for integrating the water recovery and separation of Cl^(–) ion from ultra-high-salinity brines with radical precipitation of Mg^(2+)and Ca^(2+) ions in one step. 展开更多
关键词 hypersaline brines Directional solvent extraction Salt separation Ca^(2+)and Mg^(2+)descaling
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常见盐渍食品中嗜盐微生物分布及其胞外酶活
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作者 张申奥 陈飞龙 +2 位作者 陈博 苏亦鸣 陈绍兴 《食品与生物技术学报》 CAS CSCD 北大核心 2023年第8期38-45,共8页
嗜盐微生物多生活在高盐环境中,在盐腌制品、盐渍食品、海产品等高盐食品中含量丰富,是一种重要的极端环境微生物资源。作者对采自安徽芜湖超市的7种常见高盐食品进行嗜盐微生物的纯培养分离,根据菌落形态特征差异,选取43株进行基于16S ... 嗜盐微生物多生活在高盐环境中,在盐腌制品、盐渍食品、海产品等高盐食品中含量丰富,是一种重要的极端环境微生物资源。作者对采自安徽芜湖超市的7种常见高盐食品进行嗜盐微生物的纯培养分离,根据菌落形态特征差异,选取43株进行基于16S rRNA基因序列相似性的物种鉴定。确定分类地位后,分别挑取不同种代表菌株进行产胞外酶活测定。最终作者确定该43株嗜盐微生物中包含13属21种嗜盐微生物,其中嗜盐古菌4属7种,嗜盐细菌9属14种。分离到产胞外淀粉酶菌株3株,产酯酶7株,产明胶酶1株,产触酶8株,说明市售高盐食品中普遍存在嗜盐微生物;这些嗜盐微生物所产的具有强耐高盐活性的胞外酶具有较高的生物开发利用价值。 展开更多
关键词 高盐食品 嗜盐微生物 淀粉酶 酯酶 明胶酶 触酶
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