ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Chi Ma,Chenyu Qi,Dingbo Wei,Zhenzhen Jiang,Yafei Guo,Nelson Belzile,Tianlong Deng
The efficient and renewable recovery of cesium and strontium by absorption from a new type of geothermal water liquid mineral resource is highly desirable but still challenging. In this work, a new Zr-doped layered potassium thiostannate adsorbent (KZrTS) was first synthesized and used for Cs+ and Sr2+ green and efficient adsorption. It was found that KZrTS had very fast adsorption kinetics toward both Cs+ and Sr2+ with an equilibrium reached within 1 min, and the theoretical maximum adsorption capacities for Cs+ and Sr2+ were 402.84 and 84.88 mg/g, respectively. Moreover, to solve the loss problem of the engineering application of the powdered adsorbent KZrTS, KZrTS was uniformly coated with polysulfone by wet spinning technology to form micrometer-level filament-like absorbents (Fiber-KZrTS), whose adsorption equilibrium rates and capacities toward Cs+ and Sr2+ are almost the same as that of powder. Furthermore, Fiber-KZrTS showed excellent reusability, and the adsorption performance remained virtually unchanged after 20 cycles. Therefore, Fiber-KZrTS has potential application for green and efficient cesium and strontium recovery from geothermal water.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xuezhen Wang,Xiaotong Jiang,Junmin Wu,Kaiyu Zhao,Yafei Guo,Tianlong Deng,Xiaoping Yu
With the development of new energy industry, the extraction of lithium from liquid minerals has attracted extensive attention. Herein, a novel phenolic resin-supported H 2 TiO 3 foam (RF/UF-HTO) was developed for Li + recovery from aqueous solutions. It was found that when the thermosetting phenolic resin was modified with urea and then foamed by petroleum ether with boiling points of 60 ∼ 90 °C under the assistance of 1.5% Tween 80 + 3% sodium dodecyl sulfate, the material presented a porous 3D network structure with a high specific surface area and porosity. The maximum adsorption capacity of the material reached 52.41 mg·g −1 . The adsorption rate was controlled by the particle diffusion, and the adsorption was proven to be an endothermic process by the microcalorimetry. The material exhibited high adsorption performance for low-concentration Li + in geothermal water with a low degree of mineralization. The adsorption capacity reached 21.50 mg·g −1 after only 6 h, and the attenuation of adsorption capacity was only 1.96 mg·g −1 after 10 cycles. Because of the high Mg 2+ concentration and high degree of mineralization, the adsorption capacity for Li + in salt lake brine was low. This problem was successfully solved by regeneration with Ba(OH) 2 , by which the adsorption capacity was enhanced from 0.54 to 20.72 mg·g −1 . Even for the fixed-bed adsorption, the adsorption capacity still reached 8.5 mg·g −1 . Based on these excellent properties, the material and method developed in this work can be used for Li + recovery from brine with different degrees of mineralization and composition.
研究领域:
材料科学
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环境工程
✓ 已验证
DOI
高影响因子
Environmental Earth Sciences
·
2022
·Vol. 81
·期 16
·1-12
·
IF 3.119
Feng Wenchao,Wu Jun,Lu Jian
The high concentration of manganese (Mn 2+ ) in geothermal water will seriously reduce its utilization rate. Manganese sand has been used to rapidly remove Mn 2+ from water. This study investigated the long-term removal of Mn 2+ from simulated geothermal water by manganese sand filtration column system. The average Mn 2+ removal rate from simulated water with the inlet water temperature of 25, 50, 70 °C were 87.4%, 96.2% and 99.0% during the operation of 90 days. The effluent pH did not change much compared with influent pH value (7.6–8.0). The Mn 2+ removal rates during the operation of 90 days with influent concentration of 1, 10, 20 and 50 mg/L were respectively 98.2%, 99.8%, 91.4% and 63.4%. The average removal rates of Mn 2+ were respectively 99.8% and 94.0% with the influent flow of 5.2 mL/min and 10.4 mL/min. The temperature change in the manganese sand filtration column was further explored in this paper. The experiment of filtration column heated/non-heated showed that the manganese sand filtration column heated had a better effect of removal which could run for 152 days. The dispersion coefficient ( D ) analysis derived from inverse modeling showed that a small temperature change in the filtration column system was conducive to the homogenization of manganese sand medium in the column. The Mn 2+ removal process of manganese sand filtration column heated was proposed. Surface characteristics analysis of manganese sand in the column after reaction showed that Mn 2+ removal mainly occurred in the upper part of the filter column. The surface material of manganese sand in the filtration column heated after operation was manganese oxide material mainly composed of Mn 2 O 3 and MnO 2 . These findings suggested the potential of manganese sand in the engineering application of removing Mn 2+ in geothermal water.
研究领域:
环境科学
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水处理工程
✓ 已验证
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 7
·1421
·
IF 3.2
Wei Li,Yi Wu,Ruiqing Huang,Chen Yang,Mei Zhang,Pengchen Xie,Jian Xiong,Xuebin Lu
Municipal sludge was pyrolyzed to produce sludge-derived biochar (SBC), which was subsequently modified with lanthanum nitrate. Through orthogonal experiments, the optimal preparation conditions for La-SBC-700 were determined. The morphological and textural properties of the biochar material, such as specific surface area, were characterized and batch adsorption experiments simulating fluoride-containing wastewater were conducted to investigate the effects of pH, fluoride concentration, biochar dosage, and coexisting ions on the fluoride removal performance of La-SBC-700. The application potential of the biochar material in real geothermal water was also assessed. The results indicated that La-SBC-700 prepared under optimal conditions exhibited an adsorption capacity approximately 10 times higher than that of the pristine biochar (SBC). The adsorption process was stable within the pH range of 5.0 to 8.0 and conformed to the Quasi-secondary-order kinetic and Langmuir isotherm models, with a maximum theoretical adsorption capacity of 40.338 mg/g. The adsorption process was spontaneous and endothermic.NO3−and Cl−had negligible effects on fluoride removal, whereasCO32−,SO42−, andHCO3−exerted varying degrees of influence on the adsorption process. La-SBC-700 demonstrated excellent performance in removing fluoride from geothermal water, providing a reference method for the resourceful utilization of sludge and the removal of fluoride from geothermal water.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Zhenzhen Jiang,Chi Ma,Yanqing He,Mingli Li,Gaoling Liu,Yafei Guo,Duo Ji,Tianlong Deng
To develop a green and efficient cesium adsorbent with high adsorption capacity , rapid kinetics, and good regeneration performance is a tremendous challenge. In this work, potassium iron antimony thiostannate (PIATS) synthesized by the hydrothermal method was utilized for green recovery cesium from geothermal water for the first time. PIATS showed a high adsorption capacity of 401.23 mg/g, which was much higher than other types of adsorbents at present. Meanwhile, PIATS showed rapid ion exchange kinetics (within 3 min) and broad pH resistance (4–12). More importantly, PIATS still showed excellent selectivity to cesium even in geothermal water containing many other coexisted ions ( K d = 1.96 × 10 4 mL/g), and the separation factors between Cs + and the coexisted competing ions were ranged from 462.77 to 963.76. Subsequently, the cesium-laden PIATS could be easily eluted with 0.50 mol/L NaNO 3 to achieve rapid desorption (within 10 min). The concentration of Cs + in the elution was enriched more than 11 times higher than that in the original solution. Furthermore, no organic solvents or other toxic reagents were involved during the whole process. Therefore, the adsorption advantages, excellent enrichment ability, and structural stability of PIATS make it a potential recyclable candidate for green cesium recovery from geothermal water.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Chemistry
·
2022
·
IF 3.241
Yingchun Xie,Yilin Zhang,Jiayu Qin,Murodjon Samadiy,Tianlong Deng
In this study, ethylene glycol diglycidyl ether (EGDE) and melamine (ME) were used to prepare a spherical composite material CMC-LTO-EGDE-ME through the strategy of cross-linking reaction of biodegradable sodium carboxymethyl cellulose (CMC) with Li2TiO3 (LTO) to improve the cycle stability of the adsorption-desorption for lithium recovery. In the geothermal water at 333.15°K, the adsorption capacity of the spherical composite adsorbent for lithium-ion is 12.02 mg/g, and the adsorption equilibrium time is 8 h. There is a good selectivity of Li+ (Kd = 3.7 × 103) and high separation factors between Li+ and Na+, K+, Cs+ and Ca2+ (between 39.17 and 181.97). Studies on adsorption kinetics and adsorption isotherm showed that composite material’s adsorption process was obtained from the pseudosecond-order kinetics and the molecular diffusion model. It was found that the composite material has broad applications in lithium recovery from geothermal water.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2022
·
IF 7.34
Qi Liu,Haojie Ge,Can Liu,Ningluo Zhang,Yafei Guo,Tianlong Deng
A novel porogen-added ammonium phosphomolybdate-polyacrylonitrile (AMP-PAN-N20) was prepared to remove Cs + from geothermal water. Compared with traditional AMP-PAN, porous AMP-PAN-N20 beads have a smaller particle size, larger adsorption capacity and faster adsorption rate. The adsorption batch experiments were carried out with the research objects' adsorbent contact time, dosage, pH value, initial Cs + concentration, temperature and competing ions. The results showed that AMP-PAN-N20 could effectively adsorb Cs + in a wide pH range and high concentration of competing ions. Remarkably, the adsorption performance hardly decreased after ten cycles of adsorption. In addition, the column adsorption tests were obtained using Cs-containing geothermal water. The results showed that the adsorption breakthrough time could be as long as 60 h (flow rate Q = 2 mL·min −1 , bed height H = 8 cm), and the maximum dynamic adsorption capacity was 25.62 mg·g −1 under the Thomas model. In addition, the AMP-PAN-N20 maintained good stability after a long time of adsorption.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Hengxi Wang,Xiaonan Yang,Lijun Meng,Senjian Han,Shiqiang Wang,Yafei Guo,Tianlong Deng
Prussian blue analogue (PBA) membranes for efficient Cs removal via in situ synthesis have attracted much interest. Herein, copper-substituted PBA was developed and optimized on the surface of a substrate with the aid of tannic acid (TA). The fabricated Cu-PBA-TA membrane was systematically investigated for its Cs adsorption property in static and dynamic experiments. The as-prepared membrane showed a maximum adsorption capacity of 265.0 mg g−1, which was the highest when compared to that of previously reported PBA membranes. Applied in geothermal water, the Cu-PBA-TA membrane showed favorable selectivity (Kd, 8680 mL g−1) and the removal rate of Cs+ was about 90%. Its fast adsorption rate that reached equilibrium within 40 min and the benign reusability in the dynamic treatment of geothermal water confirmed the potential of the membrane for large-scale application.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-22
·
IF 3.8
Zhu Wenxi,Wang Bingjie,Cui Shengkai,Tan Huijing,Yang Shiwei
Guided by the goal of improving the heat transfer efficiency of geothermal cement, the development of high thermal conductivity fillers is urgently needed. Considering the drawbacks of carbon-based fillers in deteriorating the strength and fluidity of cement, this study proposes the use of green and low-cost deep eutectic solvents (DES) loaded with graphene oxide to form nanofluids (GONF) to improve the connection between graphene oxide and cement. The thermal conductivity and basic properties of GONF-cement under thermal storage conditions (60–100 °C, 0–36%NaCl) were reported, and the influence mechanism of nanofluids was analyzed. The following interesting conclusions were found: (1) The oxygen-containing functional groups on the surface of graphene oxide were connected to active sites of DES through the formation of the hydrogen bond network, forming thermal stable nanofluids. (2) Nanofluids was proven to be a low-cost (reduce material costs of graphene oxide by 90%) and effective material for enhancing the thermal conductivity and mechanical properties of geothermal cement while maintaining appropriate fluidity and low variation of density. (3) The synergistic mechanism between nanofluids and cement is due to the fact that nanofluids promotes hydration process by providing stable reaction sites, significantly reducing the porosity and pore size of cement. The dense structure enhances compressive strength and shortens the heat transfer path. This study enriches geothermal cementing technology and provides support for the low-cost application of graphene oxide in exploration engineering.
研究领域:
材料科学
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能源工程
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2017
·
IF 2.594
Qingyong Li,Guorong Duan,Jie Luo,Xiaoheng Liu
In this study, the Ag/AgCl/WO 3 plasmonic Z-scheme photocatalysts with different contents of Ag/AgCl nanoparticles (NPs) were prepared through a facile ultrasonic precipitation method in geothermal water , wherein the geothermal water served as the chlorine source. Then the photocatalytic activity was investigated by degradation of 4-Aminobenzoic acid (4-ABA) under visible-light irradiation. It was found that the as-prepared 50 wt% Ag/AgCl/WO 3 photocatalyst showed the highest photocatalytic efficiency with 25.12 and 3.53 times higher than those of pure WO 3 and Ag/AgCl, respectively. The active species trapping experiments indicated that h + and ·O 2 − were key factors in 4-ABA photodegradation process. The possible plasmonic Z-scheme photocatalytic mechanism of photocatalytic reaction for 4-ABA degradation was proposed based on systematical characterizations. We hope this paper could give new ideas for further exploiting geothermal energy to design and fabricate highly efficient visible-light-driven photocatalysts for environmental remediation.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Kaiyu Zhao,Bojia Tong,Xiaoping Yu,Yafei Guo,Yingchun Xie,Tianlong Deng
The recovery of lithium has received widespread attention. Adsorption is one of the most promising methods, but the synthesis of adsorbents with high adsorption performance and stability is still a huge challenge. Herein, a novel porous fiber using H 2 TiO 3 (HTO) as the core material was developed for lithium recovery from geothermal water. HTO was successfully coated and uniformly distributed in the polysulfone (PSF) fiber by a commercialized spinning apparatus combined with the wet spinning technology. When the percentage of HTO in PSF/HTO was 50%, the material showed high adsorption performance, even close to that of powdery HTO. The stability and adsorption capacity of PSF/HTO were further improved using hyperfine H 2 TiO 3 synthesized by a modified solid-state method. Compared with other composite adsorbents reported at present, the maximum adsorption capacity and adsorption rate were obtained, and even the adsorption capacity for 25.78 mg·L − 1 Li + in geothermal water reached 22.66 mg·g −1 after only 60 min with a recovery rate of 88.68%. The distribution coefficient of Li + was 2 ∼ 3 orders of magnitude higher than other coexisting ions, and the average dissolution loss rate of Ti did not exceed 0.6% during cyclic tests. Because of the excellent adsorption properties of PSF/HTO, especially the feasibility of large-scale preparation using commercialized spinning apparatus, the material developed in this work can be used as a potential adsorbent for lithium recovery from geothermal water or other liquid lithium resources.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CLAY SCIENCE
·
2020
·
IF 4.605
Yaowu Cao,Qinghai Guo,Mengsi Liang,Weihao Sun
Antimony enrichment in aquatic environments is of great concern to international community. High-temperature geothermal waters usually contain excessive Sb, which are apt to contaminate the groundwaters or surface waters used as drinking waters in and around a hydrothermal area. However, Sb removal from geothermal water is rarely documented and the effect of high temperature on Sb removal has not received much attention. In this study, batch sorption experiments were conducted to investigate Sb removal from water by a hydroxyl-intercalated, mechanochemically synthesized Mg-Fe-LDH (i.e. Mg-Fe-OH-LDH) capable of avoiding secondary pollutions commonly related to other Mg-Fe-LDH intercalated by undesirable anions, such as Cl − and NO 3 − . The sorption capacities of Mg-Fe-OH-LDH for Sb(III) and Sb(V) were up to 48.7 and 30.0 mg/g, respectively. Notably, Mg-Fe-OH-LDH performed even better in removing aqueous Sb(V) at higher temperatures, superior to sorption of Sb by iron oxides that is generally exothermic and tends to be inhibited by increasing reaction temperature. The removal of Sb(V) existing as Sb(OH) 6 − by Mg-Fe-OH-LDH was attributable to its exchange with interlayer hydroxyl, and therefore could be impaired to some degree by coexisting anions with stronger electronegativity or smaller ionic radii . In contrast, anion exchange didn't contribute so much to Sb(III) sorption, because the main Sb(III) species at pH < 10 is neutral Sb(OH) 3 . XPS analyses confirmed that inner-sphere complexation between sorbed Sb(III) and Fe on Mg-Fe-OH-LDH layers was formed, which was hardly affected by competitive anions. Mg-Fe-OH-LDH is promising to be practically applied in removing both Sb(III) and Sb(V) from contaminated natural waters, wastewaters, or geothermal waters potentially acting as a pollution source .
研究领域:
环境科学
·
水处理
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地球化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）