Salt Lake Environment Research Articles

Photo-fenton catalysis degradation of 4-dodecylmorpholine by heterogeneous microprocessor Cu2O/SnO2

The increasing demand for potash has led to the increased use of 4-dodecyl morpholine (DMP), an important froth flotation agent for the extraction for potash extraction by “reverse flotation-cold crystallization”. As it is not easy to be stable and decompose in its natural state, it has seriously endangered the environment of salt lakes and the development of salt lake resources. The development of a safe and harmless catalytic system to accomplish the degradation and removal of DMP is urgent. Herein, A Cu2O/SnO2/PDA (CSP) nanoparticle with a synergistic effect of photocatalysis and Fenton-like catalysis was developed, and the CSP had a good photothermal conversion efficiency. Under 808 nm NIR irradiation, not only the catalyst activity was enhanced, but also the complexation rate of electron-hole pairs was reduced, which effectively increased the degradation efficiency of DMP (an increase of about 31.56 %). In addition, by analyzing the degradation products of DMP, the possible pathways of the DMP degradation process were proposed and, at the same time, the degradation catalytic system we used was proved to be safe and harmless. A new pathway is provided for the degradation and removal of DMP in the salt lake environment.

The Relationship of the Change in Hydrogeochemical Features and Lithium Values of Kızılırmak Basin (Nevsehir-Central Anatolia) Water with Tectonic Fields

In this study, in particular, the relationship between high lithium values and geological environments was examined. To determine this, the geology, structural geology, hydrogeology, and hydrogeochemistry of the area in the north of the Gülşehir-Yeşilöz sub-basin of the Kızılırmak Basin were investigated. For hydrogeological studies, 19 water samples were collected in May and September. Tectonically, this area has a horst-graben structure. The relationships between the water analysis values of the study area and the tectonic areas were investigated. In particular, the lithium content of the waters in the study area was investigated. Hydrogeochemical properties and seasonal changes in water resources were studied in detail, and their relationship with tectonic areas was evaluated. Water analyses were carried out during wet and dry periods to determine temporal hydrogeochemical changes. According to the analysis, the waters in the area are of Ca-HCO3 and Ca-Mg-HCO3 facies. In addition, there are water samples with high lithium content in the study area. IDW and Kernel diagrams of these were prepared. It was found that these high values were influenced by the rocks formed in the ancient sea and saline lake environments. The region with the highest lithium value is in the formations that represent the former salt lake environment. High lithium (Li) values are generally higher in the region within the Kızılırmak graben. Lithium values in this area were determined as 241.3 µg/L, 154.5 µg/L, 155.2 µg/L, 156.8 µg/L, and 155.6 µg/L.

Spatio-temporal change and driving mechanisms of land use/cover in Qarhan Salt Lake area during from 2000 to 2020, based on machine learning

The significance of land use classification has garnered attention due to its implications for climate and ecosystems. This paper establishes a connection by introducing and applying automatic machine learning (Auto ML) techniques to salt lake landscape, with a specific focus on the Qarhan Salt Lake area. Utilizing Landsat-5 Thematic Mappe (TM) and Landsat-8 Operational Land Imager (OLI) imagery, six machine learning algorithms were employed to classify eight land use types from 2000 to 2020. Results show that XGBLD performed optimally with 77% accuracy. Over two decades, salt fields, construction land, and water areas increased due to transformations in saline land and salt flats. The exposed lakes area exhibited a rise followed by a decline, mainly transforming into salt flats. Agricultural land areas slightly increased, influenced by both human activities and climate. Our analysis reveals a strong correlation between salt fields and precipitation, while exposed lakes demonstrate a significant negative correlation with evaporation and temperature, highlighting their vulnerability to climate change. Additionally, human water usage was identified as a significant factor impacting land use change, emphasizing the dual influence of anthropogenic activities and natural factors. This paper addresses the void in the application of Auto ML in salt lake environments and provides valuable insights into the dynamic evolution of land use types in the Qarhan Salt Lake region.

Experimental investigation on the effects of temperature and w/c on corrosion characteristics of rebars in concrete exposed to salt lake environments

Experimental investigation on the effects of temperature and w/c on corrosion characteristics of rebars in concrete exposed to salt lake environments

Attack resistance mechanism, uniaxial compressive mechanical properties and meso-simulation of high-performance concrete exposed to brine in salt lake for 10 years

The study investigated the corrosion resistance, corrosion micro-mechanisms, and the uniaxial compression stress–strain constitutive relationship of high-performance concrete (HPC) specimens subjected to long-term brine corrosion in an underground salt lake environment (Xining, China), which possesses a salt content of 180894.5mg/L. A three-dimensional random aggregate concrete meso-model was established considering the mesostructural characteristics of concrete. The mechanical behavior of HPC was assessed using the LS-DYNA software platform. The findings indicated that both the compressive strength and the dynamic elastic modulus of HPC demonstrated a pattern of initial increase, followed by a decrease, with extended brine exposure. Nevertheless, after 10 years of exposure to salt lake brine, the compressive strength of the HPC samples was still considerably greater than their original strength, with minimal evident corrosion damage to the concrete. Physical and chemical corrosion products formed exclusively in the spherical pores created by the air-entraining agent within the shallow layer of HPC, without notable micro-cracks or spalling. The HPC specimens exposed to brine for ten years under uniaxial compression load exhibited typical characteristics of splitting failure. In addition, the results from the mesoscopic numerical simulations aligned well with the experimental findings. The study shows that the three-dimensional random aggregate concrete mesoscopic model can simulate the uniaxial compressive mechanical behavior of HPC specimens under long-term corrosion conditions.

Protection and Time-Varying Characteristic of Rebar Corrosion in Magnesium Oxychloride Cement Recycled Concrete under the Simulated Salt Lake Environment

Protection and Time-Varying Characteristic of Rebar Corrosion in Magnesium Oxychloride Cement Recycled Concrete under the Simulated Salt Lake Environment

Corrosion Investigation of Reinforced Concrete Under Qinghai Salt Lake Environment By EIS

Corrosion Investigation of Reinforced Concrete Under Qinghai Salt Lake Environment By EIS

Geochemistry, Mineralogy, and Coal Petrology of No. 4 Coal in Sandaoling Mine, Turpan-Hami Basin, Northwest China: Provenance and Peat Depositional Environment

The Turpan-Hami Basin is one of the three coal-accumulating basins in Xinjiang. There is coal, natural gas, petroleum, sandstone-type uranium ore, and other ore resources in the Jurassic strata developed inside. This study aims to gain a deeper understanding of the formation process of ore resources in the Turpan-Hami Basin by studying the provenance and depositional environment of No. 4 coal in the Sandaoling Mine. The results show that No. 4 coal is extra-low ash yield and extra-low sulfur coal. Compared with common Chinese coals and world hard coals, the trace element content in No. 4 coal is normal or depleted. The minerals in coal are mainly clay minerals, silica and sulfate minerals, and carbonates. The diagrams of Al2O3, TiO2, Sr/Y, L,a/Yb, and the REY geochemical features indicate that the Paleozoic intermediates and felsitic igneous rocks in Harlik Mountain and Eastern Bogda Mountain are the main provenance of No. 4 coal. The syngenetic siderite, Sr/Ba, Th/U, total sulfur content, and maceral indices indicate that No. 4 coal was formed in a salt-lake environment, and the climate changed from dry and hot to warm and humid.

Sharing food with hyenas: a latrine of Pachycrocuta brevirostris in the Early Pleistocene assemblage of Fuente Nueva-3 (Orce, Baza Basin, SE Spain)

The Early Pleistocene archeological site of Fuente Nueva-3 (FN3) preserves some of the oldest evidence of hominin presence in Western Europe, including a huge assemblage of Oldowan tools and evidence of butchering and marrow processing of large mammal bones. Moreover, there is also evidence of the regular presence of carnivores at the site, including a small proportion of bones that show tooth marks, the majority of which can be attributed to the giant, short-faced hyena Pachycrocuta brevirostris, and there are 220 coprolites, most of them from the Upper Archeological Level. In order to identify the defecating agent, we analyze here the coprolites and compare them with other specimens from the literature and with scats from zoo spotted hyenas (Crocuta crocuta). The morphology, color, size, and chemical composition of the FN3 coprolites allow us to attribute them to the hyena P. brevirostris, which is also represented at the site by fossil specimens. In addition, we evaluate the origin of the accumulation of coprolites and discuss on the role played by the scavenging hyenas in the accumulation and modification of the bone remains unearthed at the site, which allows evaluating the contribution of the giant hyena to this Early Pleistocene site. Finally, based on the lithology of layer 5 of the Upper Archeological Level, fine sands and clays deposited in a salt-lake environment, we hypothesize that this layer may have acted as a quicksand where large-sized animals like elephants were trapped and their carcasses lured scavenging carnivores.

Influence of polyborate ions on the fractionation of B isotopes during calcite deposition

Boron (B) isotopes are widely used in studies of water–rock interaction and earth surface processes. The δ11B is a potentially attractive proxy of seawater pH, as the relative abundance of the two primary aqueous B species in seawater (boric acid, H3BO3 and borate, B(OH4)−) is strongly pH-dependent. In the process of marine carbonate deposition, the fractionation of the B isotope is controlled by the proportion of H3BO3 and B(OH4)− in seawater. In addition to H3BO3 and B(OH4)−, there are polyborates (e.g., B3O3(OH)4−, B4O5(OH)42−, and B5O6(OH)4−) in salt-lake brine, and their impacts on B isotope fractionation are still unclear. Notable, significant differences are observed in the degrees of fractionation of B isotope during the deposition of carbonates in marine and salt-lake; nonetheless, studies on the internal reasons for this significant difference between the marine and salt-lake environments are scarce, limiting the application of B isotope in salt lakes. In this study, a series of calcite sedimentary experiments in mother liquor with different BO compounds was conducted at a constant pH of 8.20 (±0.05). The results indicate the incorporation of H3BO3 through polyborates into calcite during the precipitation of calcite, thus reducing the B isotope fractionation degree between the mother liquor and calcite. This study provides an experimental basis for explaining the differences in B isotope fractionation between marine and terrestrial environments and the inversion of paleo-salinity using the B isotope of sedimentary carbonate.

Sulfate Freeze–Thaw Resistance of Magnesium Potassium Phosphate Cement Mortar

Concrete facilities in the severe-cold areas of western China (salt lake environments and heavy saline soils) are seriously damaged by the multiple corrosion effects of freeze–thaw cycles and sulfate corrosion. Magnesium phosphate cement (MPC) cement-based material has become an ideal concrete structural component because of its superior performance. Because concrete structural repair materials are used in heavy-corrosion environments, their durability in those environments should also be considered. Regarding the salt-freezing resistance of MPC, the existing studies have all used a NaCl solution as the heat transfer medium. In addition to chlorine salt, sulfate, especially Na2SO4, is also common in typical use environments such as oceans, salt lakes, and groundwater. To evaluate the sulfate freeze–thaw resistance of potassium magnesium phosphate cement (MKPC) mortar, in this study the strength development, weight loss, and water absorption of MKPC mortar specimens subjected to different freeze–thaw cycles were tested and compared with those for Portland cement (P.O) mortar specimens of the same strength grade. The results showed that the P.O mortar specimen completely lost its strength after 75 cycles of rapid water freezing and thawing and 50 cycles of sodium sulfate solution (5%) freezing and thawing. However, the residual strength rating of the MKPC mortar specimen after 75 cycles of water freezing and thawing and 100 cycles of sodium sulfate solution freezing and thawing was higher than 75%. After 50 rapid freeze–thaw cycles in water and a 5% Na2SO4 solution, the P.O mortar specimen’s mass loss exceeded the 5% failure standard, whereas the mass loss of the MKPC mortar specimens was much less than 5%. Before the freeze–thaw cycles, the water absorption of the P.O mortar specimen was close to 8 times that of the MKPC mortar specimen, and after 50 water freeze–thaw cycles and 25 sulfate solution freeze–thaw cycles, the water absorption reached 4.88% and 5.68%, respectively. However, after 225 freeze–thaw cycles in water and the sulfate solution, the water absorption rates of MKPC mortar specimens were 2.91% and 2.51% respectively. The test and analysis results show that the freeze–thaw resistance of MKPC mortar was much higher than that of Portland cement mortar specimens. Those results provide a prerequisite for applying and expanding the use of MKPC-based materials in severe-cold areas of western China (salt lake and heavily saline soil environments).

Hydrocarbon generation potential and model of the deep lacustrine source rocks in the Dongying Depression, Bohai Bay Basin

The deep mudstone in the Palaeogene of the Dongying Depression has been relatively deeply buried and is a useful example of a deep source rock. We use TOC, rock pyrolysis, gas chromatography-mass spectrometry (GC-MS) and vitrinite reflectance (VRo) to evaluate organic matter types, the sedimentary environment, thermal maturity, and hydrocarbon generation potential. Thermal pyrolysis experiments and PVT phase simulation were also used to study the evolution of hydrocarbon generation in these deep source rocks. Two sets of dark mudstone are formed in a reductive salt lake environment, and the organic matter types are mainly I and II. TOC data and pyrolysis experiments show considerable hydrocarbon generation potential. The mudstone samples present low pristane/phytane, high gammacerane/C30hopane, and gammacerane/C31hopane (22R) values, reflecting a strong reduction environment with development of gypsum and salt rocks for the source rocks. A significant effect of maturity on the carbon isotope was indicated, and the carbon isotope values of aromatics are unusually heavier than those of saturated hydrocarbons and resins. The maturity parameters VRo and pyrolysis peak temperature (Tmax) are somewhat reduced owing to the influence of multiple units of gypsum-salt rocks. The VRo values of the two sets of mudstone are in the range 0.74%–1.0% and 0.75%–1.95%, respectively, indicating that these mudstones are mainly moderately mature and high to over mature. The results of thermal simulation experiments of a hypersaline mudstone show that the increase in organic matter maturity is uneven at different stages of thermal evolution, and the increasing rate is relatively fast in the oil generation window. The wide maturity range of the source rocks contributes to the formation of various types of reservoirs, including normal oil, volatile light oil, condensate gas and single dry gas in the deep part of depression; all reservoir types are distributed regularly with burial depth. A detailed hydrocarbon generation model for salt lake facies is proposed to show the evolutionary stages of biogas, bitumen, low mature oil, normal oil, wet gas, volatile oil, condensate gas, and dry gas with increasing thermal maturity. Reservoirs of volatile oil, condensate gas, and dry gas develop at depths of >4000 m. At depths of >4500 m, condensate gas and single dry gas reservoirs mainly exist; these are the main targets for deep petroleum exploration in the area.

Palaeoclimate, palaeosalinity and redox conditions control palygorskite claystone formation: an example from the Yangtaiwatan Basin, northwest China

AbstractPalygorskite-bearing claystones and mudstones were deposited in a salt lake in the middle and lower parts of the Neogene Baiyanghe Formation in the Yangtaiwatan Basin, China. The petrological, mineralogical and geochemical characteristics of the sediments were investigated to determine the factors controlling palygorskite formation. The palygorskite claystones and mudstones have distinctly varying mineral compositions. The claystones are composed of detrital minerals, palygorskite and illite, whereas the mudstones consist mainly of mixed-layer illite/smectite and illite. The palygorskite crystals were intact with sharp edges and interwoven with other minerals, indicating an authigenic origin. The chemical characteristics indicate that the palygorskite claystones in the middle part of the Baiyanghe Formation were deposited in a salt lake environment in an arid and hot climate. As the salinity of the lake gradually increased, the detrital minerals such as quartz, feldspar, dolomite and detrital clay minerals dissolved in the alkaline medium, thus providing Si4+, Mg2+and Al3+for the crystallization of palygorskite. The palygorskite coexists with certain amounts of detrital quartz and feldspar with limited roundness and sorting, indicating that the shallow lake of the basin under an oxidation environment may represent a favourable environment for the crystallization of palygorskite.

Evaluation of Health Effect of Gamma Radiation from Uburu and Okposi-Okwu Salt-Lakes in Ebonyi State, During Rainy and Dry Seasons

A comparative study of the gamma radiation in Uburu and Okposi-Okwu Salt-Lakes located in Ohaozara Local Government Area of Ebonyi State, during rainy and dry seasons was carried out using a hand-held RadEye G20–ER10 gamma survey meter and a geographical position system. Three samples were taken randomly from five different points of the two Salt-Lakes and their host communities during both seasons and their averages were recorded. An in-situ exposure rate measurements were used to evaluate the absorbed dose rate, the annual effective dose and the Excess Lifetime Cancer Risk. The results obtained were compared with the world average so as to determine the health risk to the studied environment. The mean exposure rate, absorbed dose rate (ADR), annual effective dose (AED), and excess lifetime cancer risk (ELCR) from Uburu and Okposi-Okwu Salt-Lakes during rainy season were 0.139 µSv/h, 138.8 nGy/h, 0.170mSv/y and 0.596×10-3; 0.123 µSv/h, 121.8 nGy/h, 0.149mSv/y and 0.523×10-3 respectively. Also, the mean exposure rates, ADR, AED, and ELCR from Uburu and Okposi-Okwu Salt-Lake during dry season were 0.177 µSv/h, 176.6 nGy/h, 0.216mSv/y and 0.758×10-3; 0.174 µSv/h, 173.3 nGy/h, 0.213mSv/y and 0.746×10-3 respectively. All the assessed results are higher than the world standard value for the general public. These results showed that the studied areas are radiation contaminated. The results within the Salt Lake environment are higher than the results from their host communities. This may be attributed to the activities within the Salt Lake environment such as local salt processing. Also, the results from the two studied areas during dry season were higher than that of the rainy season.

Durability performance of fly ash-based geopolymer concrete buried in saline environment for 10 years

Durability of geopolymer concrete is an important property for its application in construction sector; however, it is less explored. In this study, the long-term durability of fly ash-based geopolymer concrete (GPC), exposed in a severe salt lake environment with the buried and fully saturated condition for 10 years, is investigated. The outcome of chloride and sulphate attack on the durability behaviour of GPC was compared to ordinary Portland cement (OPC) concrete at the same exposure conditions. The results of this study reveal that the GPC has an adverse effect of chloride transportation with higher chloride diffusion coefficient and the lower binding capacity, compared to OPC concrete. The sulphate penetration of GPC was also greater than OPC concrete, however, its detrimental effect has been found more pronounced in OPC concrete due to the gypsum formation resulting in the softening of its matrix. The pH measurement indicated that the GPC has the neutral to mild alkalinity with the pH range of 7.0–8.0, whereas OPC concrete showed between 12.0 and 12.5. The mineralogical and morphological changes within the microstructure as a result of long term exposure in the buried saline environment were also studied by FT-IR and SEM/EDX analysis.

Time‐dependent model and life prediction for reinforcement corrosion in magnesium oxychloride cement concrete

AbstractAn effective approach to make better use of the salt‐brine resistance of magnesium oxychloride cement concrete (MOCC) and reduce “magnesium damage” (the concentrate of magnesium resources) that destroys the ecological balance in salt lake areas is to apply MOCC widely. However, the first problem is the high chloride ion content in MOCC, which corrodes reinforcement easily. Concrete cover depth, the experimental environment, and surface treatment of rebar were considered factors study in reinforcement corrosion in MOCC. Based on the tests conducted, a time‐dependent model for reinforcement corrosion in MOCC was proposed, and its life time (initial corrosion and initial cracking time) was calculated and verified in tests. The results showed that proper coating could inhibit reinforcement corrosion and increase the service life of rebar significantly. Further, the salt lake environment had little influence on reinforcement corrosion in MOCC. For exposed rebar in MOCC, the larger the concrete cover depth, the more serious the reinforcement corrosion, while, for coated rebar, the converse was true. All cases of reinforcement corrosion in MOCC conformed to the logarithmic‐type time‐dependent model before concrete cracking. Accordingly, reinforcement corrosion in MOCC and the excess of magnesium resources are expected to be solved.

Effect of Copper Tailing Content on Corrosion Resistance of Steel Reinforcement in a Salt Lake Environment.

With the increasing proportions of copper tailings of concrete in the Qinghai Salt Lake area of China, there arises the problem of corrosion of steel reinforcement in concrete structures. In this study, we determine the corrosion rate (CR), crack width, and corrosion potential of the steel reinforcement with copper tailing. This was achieved by conducting the constant-current accelerated corrosion test with different proportions of copper tailing in the brine environment of the Qinghai province. The results demonstrate that the corrosion potential (Ecorr) and the passivation area of the polarization curve decrease with the increase in the corrosion time, and the corrosion rate and crack width increase with the increase in the corrosion time. When the corrosion time is the same, the corrosion potential, crack width, and corrosion depth of the reinforcement decrease first and then increase with the increase in the copper tailing powder content. When the copper tailing powder content is 20%, the above parameters reach the minimum value. In the salt lake environment of Qinghai, China, the copper tailing powder content is recommended to be 20%.

Durability performance of brine-exposed shotcrete in salt lake environment

Salt lake is widely distributed in Western China. The high concentrations of chlorine salt, sulfate, and magnesium salt in soil and underground water are the leading causes to the deteriorated performance of lining shotcrete and corrosion of reinforcement. This study aims to investigate the durability performance and deteriorated rules and mechanism of shotcrete lining in salt lake corrosion environment by using dry-wet (D&W) alternate method for simulating the corrosion mode of tunnel lining. A shotcrete durability experiment is performed in 5% Na2SO4 + 5% MgSO4 + 3.5% NaCl solution. Relative dynamic elastic modulus, mass change, and relative compressive strength are measured. Thereafter, the mineral composition and microscopy of corrosion products and the air-void structure parameter and ion content of water-soluble sodium, chloride, and calcium ions; acid-soluble sulfate ion; and pH value of pore solution are tested using X-ray diffraction, thermogravimetric-differential scanning calorimetry, scanning electron microscopy, energy-dispersive X-ray spectroscopy, RapidAir 457, and electrochemical method.Acid solubility sulfate content clearly increased with the D&W cycle, and water-soluble chloride and sodium content slowly increased. Meanwhile, water-soluble calcium and concrete pH value decreased. The combination of the expansion stress and crystallization pressure from thaumasite, brucite, gypsum, ettringite, and crystallized salt enlarged the air-void number and air content in shotcrete. Moreover, web crack formation caused deterioration of the physical and mechanical properties of shotcrete. Meanwhile, normal concrete was damaged by macrocracks connected with air void and microcracks, thereby creating crystallization pressure. Drawing stress between steel fiber and shotcrete could evidently absorb the expansion stress and crystallization pressure. Consequently, steel fiber could improve shotcrete corrosion resistance.

Sedimentary characteristics and palaeoclimatic significance of glauberite in Paleocene lacustrine deposits of the Jiangling Depression, central China

The Paleocene sedimentary sequence in the Jiangling Depression was deposited in a salt lake environment. Based on detailed core observation of four drillholes in the Jiangling Depression, a study of sedimentary characteristics of glauberite in Paleocene lacustrine deposits was conducted through thin section petrography, X-ray diffraction, scanning electron microscopy (SEM) and electron probe microanalysis (EPMA). This study has revealed five types of geological occurrences and six types of profile distribution features of glauberite. On the basis of petrological and mineralogical characteristics, we propose that the glauberite is mainly formed by crystallization from saturated sulfate solution and by ion exchange between sulfate solution and calcium-bearing pore solution. Glauberite mainly occurs in the late stage of Paleocene, when brine is relatively highly concentrated. Replacement of gypsum by glauberite is subordinate. The depositional model of glauberite is also discussed. The sulphur isotopic values (δ34S) and the strontium ratios (87Sr/86Sr) of the sulphate suggest a non-marine brine supply. The profile distribution features of glauberite contribute to a better understanding of the past climate change. The glauberite in Late Paleocene is frequently interbedded with dolomite, anhydrite, halite or thenardite, suggesting fluctuation of lake water salinity and climate. Trace element compositions of the mudstones imply the reducing condition and fluctuating salinity. The Homogenization temperatures and hydrogen and oxygen isotopic values (δDSMOW and δ18OSMOW) in halite and thenardite inclusions further indicate that in Paleocene the temperature was relatively high and fluctuant. Moreover, the palaeoclimate was drier in the late stage of Late Paleocene, though the temperature was cooler/lower.

JMT-1: a novel, spherical lytic halotolerant phage isolated from Yuncheng saline lake

This work described a novel halotolerant phage, JMT-1, with a spherical morphology. JMT-1, which was isolated from a hypersaline lake, could produce clear plaques on Chromohalobacter sp. LY7-3. The purified virions are spherical, have no visible tail, and are about 30–50 nm in diameter. JMT-1 has a wide host range, and this study showed that the phage can infect at least five halophilic bacteria. The proteins of JMT-1 were analyzed using sodium dodecyl sulfate polyacrylamide gel electrophoresis, and six proteins were detected. Results show that JMT-1 is a bacteriophage with a linear double-stranded DNA. Meanwhile, the genome is approximately 23 kb in length and is sensitive to the restriction endonucleases Bam I, EcoR I, Hind III and Kpa I. JMT-1 has a high titer, approaching 1.5 × 109 pfu/mL after dilution to 10−6 pfu/mL. The phage is also sensitive to chloroform but not to temperature, pH, and lowered salt concentration. JMT-1 is a spherical lytic halotolerant phage with a wide host range and has the tolerance to specific extreme environments. These data could provide references for studying phage resources in extreme environments and would also provide the useful methods for isolation and identification of other valuable phage in the salt lake environment.