ENERGY & FUELS
·
2024
·
IF 5.2
Xiao Zhang,Zhanyi Wang,Jianan Deng,Honghao Zhao,Yuan Zhuang,Ziyi Zhang,Xiuxia Sun,Haoyu Lian,Miao Han,Yongjun Tian
In recent years, new technologies involving self-suspending proppant (SSP), which improves proppant distribution, reduces the use of chemicals in fracturing fluids, and simplifies the fracturing construction process, have become a focus of hydraulic fracturing research. However, the available products have poor suspension stability, cannot withstand high temperature and salt environments, and are highly damaging to reservoirs. In this study, we presented a novel self-suspending (HTS-SSP) proppant with excellent suspension stability, temperature resistance, and salt resistance, prepared from quartz sand, silane coupling agent, and modified polyacrylamide to achieve these properties. Wettability tests, surface morphology analysis, and Fourier transform infrared spectroscopy analysis proved that 3-methacryloxypropyltrmethoxysilane (KH570) successfully modifies quartz sand, and the HTS-SSP was synthesized. In terms of the suspension performance, HTS-SSP exhibited exceptional suspension stability due to the incorporation of KH570. It remained suspended at 150 °C or 24 wt % brine and showed excellent temperature and salt resistance. The gel-breaking fluid of the surface polymer of HTS-SSP had low damage to the reservoir, much less than the guar gum fluid. The difference between the conductivity of the aggregate remaining after HTS-SSP gel-breaking and that of unmodified quartz sand was not significant. The synthesized HTS-SSP demonstrates outstanding comprehensive performance and is an ideal candidate for reservoir development under harsh temperature and salinity conditions.
研究领域:
石油工程
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材料科学
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DOI
高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 20
·e01613
·
IF 2
Jiarun Zhou,Shibin Wang,Ruoyu Yang,Nanpeng Yang,Yu Peng,Junlong Li
Graphical This study develops a highly salt-resistant, hydrophobic associative polyacrylamide (CHFR) to enhance the reuse of high-salinity flowback fluid. Its microstructure is characterized using FT-IR and ¹H NMR, while rheological analysis confirms its superior thickening properties and salt tolerance. CHFR significantly outperforms conventional systems, providing a novel solution for efficient fluid reuse in high-salinity reservoirs. The reuse of flowback fluid is a critical strategy for mitigating environmental pollution and reducing the costs associated with hydraulic fracturing technology in oil fields. However, in high-salinity formations, the electrostatic shielding effect caused by high-salinity flowback fluid significantly reduces the thickening efficiency of polyacrylamide-based thickeners, thereby hindering the reuse of flowback fluid. In this study, we synthesized a novel, high-salinity-resistant, hydrophobic associative polymer (CHFR) by incorporating the hydrophobic monomer octadecyl polyoxyethylene methacrylate (N1810) into acrylamide (AM), acrylic acid (AA), 2-acrylamido-2-methylpropanesulfonic acid (AMPS), and methacryloxyethyl trimethylammonium chloride (DMC). FT-IR and 1 H NMR confirmed the successful synthesis of CHFR. The polymer demonstrated a viscosity retention of 53% in a 20,000 mg/L NaCl solution and 46% in a CaCl 2 solution, exhibiting salt tolerance concentrations that were 10 and 30 times higher than those of conventional PAM/AMPS. At 100 °C and a shear rate of 100 s −1 , CHFR retained 78% of its viscosity. The interaction process between salt and CHFR can be divided into four phases: the initial period, the rapid viscosity decline period, the slow viscosity decline period, and the stable viscosity period. The CHFR polymer exhibits excellent salt resistance, providing a new type of polymer thickener for the reuse of high-salinity flowback fluid.
研究领域:
石油工程
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材料科学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 27
·15482-15492
·
IF 12.732
Yu Chen,Jin Yang,Lin Zhu,Xiaohua Jia,Sizhe Wang,Yong Li,Haojie Song
Solar-driven water evaporation is an effective approach for using solar energy to purify seawater and wastewater. However, the high energy requirements of bulk water evaporation fundamentally restrict the practicality of solar freshwater production. Herein, we demonstrate an efficient hierarchical solar evaporator by combining polydopamine (PDA) and Ti3C2Tx MXene (MX) with a cellulose network skeleton of delignified wood (DW). By integrating activated water in a hydrated cellulose network and the synergistic photothermal effect between PDA and MX, the obtained PDMX@DW evaporator achieved a high evaporation rate of 2.08 kg m−2 h−1 and energy efficiency of 93.6% under 1 sun illumination. Differential scanning calorimetry and dark evaporation experiments indicated that the water in PDMX@DW exhibited a lower vaporization enthalpy (1915 J g−1) than bulk water (2440 J g−1). Raman spectral analysis and density functional theory calculations were used to investigate the structure of water molecules in the cellulose network, and it turns out that high contents of weakly hydrogen-bonded intermediate water were the most likely origin of the reduced vaporization enthalpy. More importantly, due to the interactive cellulose network structure and increased water supply rate, PDMX@DW exhibited excellent salt resistance and long-term stability in high-concentration brine. This work provides an effective method for breaking the evaporation limitation of the traditional wood-based evaporator and improving its salt resistance.
研究领域:
材料科学
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能源工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2024
·Vol. 11
·期 20
·7152-7159
·
IF 6.1
Yun Han,Yunchen Du,Li Zhu,Yonglei Liu,Bo Hu,Bojing Sun,Fei Han
In solar desalination, resolving the durability and efficiency losses stemming from salt precipitation has become a long sought-after goal. We showcase the design for a facile, yet high efficiency solar distillation device that exhibits durable operation in hypersaline brine, where a bifunctional Janus structure is introduced for self-driven salt resistance and photothermal conversion. A Janus scaffold was constructed using an acrylate hydrogel and polyvinylidene difluoride (PVDF) for self-driven salt resistance; the polyelectrolyte effect of the gel prevents ion accumulation and the hydrophobic PVDF suppresses ion diffusion to the evaporative interface. Then, the hydrophobic part was functionalized with a new light absorber, a Ni/C nano-composite, to achieve effective photothermal conversion across the full solar spectrum. The evaporator is capable of 14 days of continuous working in hypersaline brine (10 wt% NaCl) at a rate of 1.56 kg m−2 h−1, which is among the best reported durabilities and approaches the theoretical limit. Hopefully, the new design will greatly expand the ability of solar desalination to work in extreme environments.
研究领域:
材料科学
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环境科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Jing Jiang,Ruiru Yang,Fanyi Zeng,Sheng Tu
High-performance salt-resistant solar evaporators breaking the theoretical limit of solar steam generation are highly desired for solar water evaporation technology. However, low-cost, scalable and continuous solar steam generation remains a big challenge. Herein, a robust biomass-based salt-resistant three-dimensional (3D) evaporator is designed and developed, which is composed of bamboo leaf-derived carbon (BLC) and heat-insulating macroporous melamine foam (MF), showing the integrated merits for the boosted solar evaporation performances. The designed BLC/MF evaporator presents excellent photothermal conversion ability with an evaporation rate as high as 2.29 kg m -2 h −1 and acceptable evaporation efficiency of 93.95 % under one-sun irradiation. The superior performance endows BLC/MF evaporator with flexible and versatile behaviors to purify various water sources to produce clean water meeting the standard level of World Health Organization (WHO) for drinkable water. Significantly, the BLC/MF evaporator maintains a similar evaporation rate in saline solutions and can work stably at high salinities without salt deposition. This present discloses that the BLC/MF evaporator can be served as a feasible and robust alternative for solar water evaporation in various water environment for clean water production.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zihao Wo,Xiuyue Sun,Haowen Sun,Yier Su,Yuhao Xie,Ni Yang,Xiwen Zhang
Solar steam generation combined with contaminated water purification provides a green and sustainable method to harvest fresh water from seawater or wastewater. However, essential challenges still exist in developing high-performance, multifunctional and durable evaporators. Herein, a novel wood evaporator composed of delignified balsa wood, reduced graphene oxide and partially reduced CuO/Cu 2 O nanoparticles is developed via an ultrasonic-assisted deposition technique. The synergistic effect of a 3-dimensional nanocomposite skeleton and formed heterojunctions facilitates a homogeneous distribution and sufficient interaction with water molecules, endowing the evaporator with superior optical, photothermal and solar evaporation performances. A superior evaporation rate of 2.10 kg·m −2 ·h −1 for pure water is achieved with an energy conversion efficiency of 83.39 % under 1 sun irradiation. Experimental and simulation tests further confirm the strong hydration ability of the wood evaporator to reduce the equivalent vaporization enthalpy. Meanwhile, the wood evaporator exhibits competitive salt resistance and reusability in seawater and even brines with extremely high concentration (20 wt%) in long-term irradiation, attributed to cooperative mechanisms including surface electro-negativity and interior three-dimensional salt diffusion. Stable self-floating, physical and chemical durability as well as photocatalytic antibacterial capabilities ensure long-term operation stability under harsh conditions. This work provides an efficient and potentially scalable solution for fresh water production and wastewater purification.
研究领域:
材料科学
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环境科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Jiyan Li,Yanju Jing,Min Qiao,Wenzhe Yang,Hanxue Sun,Rui Jiao,Junping Zhang,An Li
Solar-driven interfacial evaporation (SDIE) stands out as a prospective technology for freshwater production, playing a significant role in mitigating global water scarcity. Herein, a cyclodextrin polymer/chitosan composite aerogel (PPy-La/Al@CDP-CS) with vertically aligned channels was prepared as a solar evaporator for efficient solar steam generation. The vertically aligned pore structure, achieved through directional freezing assisted by liquid nitrogen, not only improves water transport during evaporation but also enhances light absorption through multiple reflections of sunlight within the pores. The polypyrrole particles sprayed on the surface of the aerogel acted as a light-absorbing layer, resulting in an impressive absorbance of 98.15 % under wetting conditions. The aerogel has an evaporation rate of 1.85 kg m −2 h −1 under 1 kW m − 2 irradiation. Notably, the vertical pore structure of the aerogel allows it to exhibit excellent evaporation performance and salt resistance even in highly concentrated salt solutions. Furthermore, this aerogel is an excellent solar-driven interfacial evaporator for purifying seawater and fluoride-containing wastewater. This photothermal aerogel has the advantages of excellent performance, low cost, and environmental friendliness, and thus this work provides a new approach to the design and fabrication of solar photothermal materials for water treatment.
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
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Shanshan Wang,Chaohu Xiao,Shun Lu,Haijing Lu,Qi-Meige Hasi,Yuhan Zhang,Xingping Luo,Lihua Chen
Solar steam generation (SSG) is an effective way to mitigate the freshwater crisis. However, challenges still remain in scalable preparation, cost-effectiveness, and expanding the scope of practical applications for photothermal materials. Herein, a biomass-based solar steam generator (named OR-INP) with salt-resistant, oil-repellent, and anti-fouling performances is fabricated by grafting poly(ionic liquid)s onto celluloses from waste newspapers and then conducting oil-repellent modification. Benefiting from the broad solar absorption in the wet state (ca. 92%), low thermal conductivity (0.1108 W m–1 K–1), and strong hydrophilic and oleophobic properties, the solar evaporation efficiency is as high as 93.25% for pure water, 84.96% for 20 wt % NaCl, and 78.46% for 5 wt % oily wastewater, under 1 sun irradiation. Moreover, the aerogel still has excellent purification effects on solutions which contain organic dyes, heavy metal ions, or bacteria. Therefore, combining the merits of salt resistance, oil repellency, and wastewater treatment, this work develops the prospect of employing waste biomass resource-based photothermal materials and expands the practical application range of biomass-based evaporators.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Peng Mu,Liang Song,Le Geng,Jian Li
Solar steam generation has attracted much attention due to its efficient and ecofriendly characteristics for application in water desalination and wastewater treatment. Many strategies have been developed to prepare the photothermal conversion materials. However, it is a challenge for preparing the materials with high energy efficiency, long durability and excellent salt resistance under 1 kW·m −2 illumination by using low-cost materials and simple method. Here, we report an ATP (Attapulgite) based PArG aerogel with low thermal conductivity (0.167 W·m −1 ·K −1 ), high mechanical property and superhydrophilicity by using combination of physical/chemical crosslinking of the ATP, PVA, GO and PA and freeze-drying for the efficient solar steam generation. The as-prepared PArG-A30 aerogel shows aligned three-dimensional porous structure and possesses high evaporation performance both in salt solution and the simulated seawater. The evaporation rate is calculated to be 1.4914 kg·m −2 ·h −1 for pure water, 1.4382 kg·m −2 ·h −1 for 20% of NaCl solution and the corresponding energy conversion is found to be 89.5% and 86% under 1 kW·m −2 illumination. In addition, the as-prepared PArG-A30 aerogel shows excellent durability and salt resistance in 20% NaCl solution, indicating the excellent the desalination performance of the resultant PArG-A30 aerogels. This study may offer a new approach to scalable fabricate a novel solar steam generator for the efficient solar steam generation by using simple method and low-cost materials.
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 APPLIED POLYMER SCIENCE
·
2019
·Vol. 136
·期 36
·47907
·
IF 2.188
Haiyang Tian,Hongping Quan,Zhiyu Huang,Wenmeng Duan,Shunjie Deng
Different from traditional crosslinked polymer diverting agents, a polymeric and non-crosslinked acid self-thickening agent (ZPAM) based on hydrophobically associating water-soluble polymer of acrylamide (AM), [2-(methacryloyloxy)ethyl]trimethylammonium chloride (DMC) and N , N ′-dimethyl octadecyl allyl ammonium chloride (DOAC) was synthesized. The apparent viscosity variation of ZPAM acid solutions in acid rock reaction and rheological properties of ZPAM spent acid solutions were studied. Results showed that ZPAM acid solutions demonstrated good uninterruptedly thickening ability from low apparent viscosity to high apparent viscosity during the acid rock reaction. Meanwhile, ZPAM spent acid solutions showed good shear resistance, viscoelasticity and high temperature resistance. The thickening mechanism of ZPAM acid solutions during the acid rock reaction was explained by apparent viscosity change, rheological properties of simulative ZPAM acid solutions, and ZPAM aqueous solutions with different concentrations of CaCl 2 . The results showed increasing calcium chloride concentration enhanced the hydrophobic association strength of the thickener solution, resulting in increasing solution viscosity, in other words, the self-thickening agent showed excellent salt resistance and acid resistance. In addition, the change of association strength of ZPAM acid solutions during the acid rock reaction was further confirmed via environmental scanning electron micrographs and UV spectrum. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47907.
研究领域:
石油工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Wenxu Zhang,Qian Liu,Yan Xu,Xuyang Mu,Hongling Zhang,Ziqiang Lei
To alleviate soil impoverishment and water shortage in desert areas, as well as to reduce the impact of waste cabbage on the environment and human health, we used waste cabbage as a substrate, 2-acrylamide-2-methyl-1-propane sulfonic acid (AMPS) and acrylic acid (AA) as polymerization units, and NH4Cl and KNO3 as nutriment to obtain two waste cabbage-superabsorbent polymers (CB-SAPNH4Cl and CB-SAPKNO3) by the one-pot method. The chemical structure, thermal stability, and morphology of the polymers were investigated by Fourier-transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), and scanning electron microscope (SEM). Meanwhile, the water retention, water absorption, and salt resistance were compared with the purchased polymers. The results showed that the nutriment was successfully encapsulated inside the polymer, and CB-SAPNH4Cl and CB-SAPKNO3 at 1% nutrient concentration showed excellent water retention properties, salt resistance, and water absorption performance of 1546 and 1131 g/g (distilled water), 306 and 277 g/g (tap water), and 116 and 91 g/g (0.9% NaCl solution). Therefore, they are highly promising materials for the application.
研究领域:
环境科学
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材料科学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Xingzhen Zhang,Shouyong Zhou,Zhigang Wang,Xian Wei,Shenxiang Zhang,Jian Jin
Hydrogel-based evaporators are a promising strategy to obtain freshwater from seawater and sewage. However, the time-consuming and energy-consuming methods used in hydrogel preparation, as well as their limited scalability, are major factors that hinder the development of a hydrogel-based evaporator. Herein, a facile and scalable strategy was designed to prepare a hydrogel-coated evaporator to realize efficient solar-driven water evaporation. The hydrogel coating layer is composed of a robust 3D network formed by tannic acid (TA) and poly(vinyl alcohol) (PVA) through a hydrogen bond. With the assistance of TA surface modifier, carbon black (CB) is uniformly distributed within the hydrogel matrix, endowing the coating with remarkable photothermal properties. In addition, Fe3+ is deposited on the surface of the hydrogel coating through metal coordination with TA, further improving the light absorption of the coating. Due to the synergistic effect of CB and Fe3+, the hydrogel-coated foam exhibited excellent photothermal properties. The water evaporation rate reached 3.64 kg m–2 h–1 under 1 sun irradiation. Because of the hydration ability of PVA hydrogel and the large porous structure of the foam, the hydrogel-coated foam demonstrated excellent antifouling performance and salt resistance. This study provides a facile method for designing and manufacturing high-performance solar-driven water evaporation materials.
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
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