Journal of the Taiwan Institute of Chemical Engineers
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2026
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IF 6.9
Xiaolei Shi,Bailing Fan,Zilong Chen,Bing Wang,Xiangqin Yang,Jingjing Hua,Cheng Yang,Yajie Wang
Background As common toxic heavy metals, the combined pollution of Pb(II) and Zn(II) is difficult to remove simultaneously due to the competition between ions, so it is necessary to develop an efficient synergistic treatment strategy. Method The study involved synthesizing functional biochar by co-pyrolyzing DGs with RM, followed by a comprehensive evaluation of its Pb(II)/Zn(II) adsorption capabilities in aqueous environments. Significant findings Multidimensional characterization results confirmed that DGs and RM were well combined, where red mud-derived functional material, such as oxygen-containing functional groups and metallic oxides, successfully loaded onto the distillers' grains-based biochar. Further, the surface properties were also remarkably modified, such as the pore structure and specific surface area were improved, the alkalinity was increased, and magnetic properties were introduced. These modified properties were identified as crucial factors governing Pb(II)/Zn(II) adsorption efficiency. The red mud-modified biochar (RM-DC) exhibited significantly enhanced adsorption capacities for Pb(II) (294.335 mg g -1 ) and Zn(II) (41.456 mg g -1 ) at ambient temperature, representing notable improvements over the pristine biochar (185.038 and 25.038 mg g -1 , respectively). The conformity to both pseudo-second-order kinetics and the Langmuir-Freundlich isotherm model suggests that the adsorption process is characterized by chemical adsorption and multimolecular layer formation. The adsorption of both Pb(II) and Zn(II) on RM-DC was determined to be endothermic and spontaneous. Pb(II) immobilization proceeded through combined surface precipitation, complexation, ion exchange, and electrostatic attraction, while Zn(II) removal was predominantly achieved via ion exchange and electrostatic interactions. RM-DC exhibited promising adsorption capability in treating authentic acid mine drainage, highlighting its potential for practical wastewater purification. This study explores a new way to reuse the industrial bulk solid wastes and provides a highly efficient strategy for heavy metal elimination.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2026
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IF 6.6
Yiwen Tang,Chen Li,Mingliang Liu,Na Li,Beibei Liu,Dongmei Li,Lei Huang
Paired blood and urinary Pb/Cd biomarkers showed distinct renal association profiles. • A multi-matrix, multi-outcome framework captured complementary Pb–Cd renal signals. • Outcome-oriented networks recurrently prioritized IL1B and IL6 across renal modules. • Shared inflammatory hubs coexisted with outcome-related peripheral network organization. • Targeted cellular assays supported the exposure responsiveness of prioritized targets. Background Lead (Pb) and cadmium (Cd) remain widespread environmental toxicants, and the kidney is a major target organ. However, reliance on a single biomarker matrix or renal endpoint may incompletely characterize Pb–Cd-associated renal abnormalities. Whether blood- and urine-based Pb/Cd biomarkers exhibit differential association profiles across renal outcomes, and whether outcome-oriented networks converge on shared candidate pathways, remains unclear. Methods We analyzed NHANES 2011–2018 data from 5049 adults. Blood and urinary Pb and Cd biomarkers were evaluated in relation to estimated glomerular filtration rate (eGFR), albuminuria [log(UACR)], and a CKD-compatible phenotype using survey-weighted regression, whereas Pb–Cd mixtures were examined using case-weighted quantile g-computation and generalized weighted quantile sum regression. Effect modification by age, sex, BMI, diabetes, and hypertension was evaluated using formal interaction tests with false-discovery-rate correction. An outcome-oriented network toxicology framework was constructed using CKD-, albuminuria-, and broad renal injury-oriented disease modules. HEK293T cells were used for targeted cellular assessment of cytotoxicity, intracellular metal accumulation, redox and inflammatory responses, and transcriptional changes in genes prioritized by network analysis following Pb, Cd, or combined exposure. Exploratory molecular docking was performed to examine potential metal–protein interaction sites. Results Individual-biomarker and mixture analyses showed that the observed associations varied across biomarker matrices and renal outcomes. Urinary Pb was positively associated with eGFR; urinary Cd and blood Pb were associated with higher log(UACR); and blood Pb and blood Cd were associated with higher odds of the CKD-compatible phenotype. The urinary Pb–Cd mixture was positively associated with eGFR and log(UACR), whereas the blood mixture was associated with higher log(UACR) and higher odds of the CKD-compatible phenotype. Formal interaction analyses identified age-related heterogeneity in selected blood-based associations, while inverse associations of blood Pb, blood Cd, and urinary Cd with eGFR were stronger among participants with diabetes. Outcome-oriented network analysis consistently prioritized IL1B and IL6 as shared inflammatory hubs, while peripheral network architecture differed across renal modules. In HEK293T cells, combined Pb–Cd exposure increased intracellular metal burden and cytotoxicity, reduced antioxidant capacity, and altered the expression of IL1B, IL6, and selected stress-response genes. Conclusion Blood- and urine-based Pb and Cd biomarkers exhibited distinct association profiles across renal outcomes, indicating that a single biomarker matrix or endpoint may incompletely characterize Pb–Cd-associated renal abnormalities. Outcome-oriented networks converged on IL1B and IL6 as shared inflammatory hubs within distinct peripheral architectures, with targeted cellular evidence supporting the responsiveness of prioritized targets. These findings establish an integrative, multi-matrix and multi-outcome framework for the mechanistic interpretation and risk assessment of Pb–Cd co-exposure. Download: Download high-res image (271KB) Download: Download full-size image
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Small
·
2021
·Vol. 18
·期 8
·2106323
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IF 13.281
Jingwei Zhu,Benlin He,Xinpeng Yao,Haiyan Chen,Yanyan Duan,Jialong Duan,Qunwei Tang
The precise phase control of Cs-Pb-Br derivatives from 3D CsPbBr 3 to 0D Cs 4 PbBr 6 highly determines the photovoltaic performance of all-inorganic CsPbBr 3 perovskite solar cells (PSCs). Herein, the preferred phase conversion from precursor to Cs-Pb-Br derivatives is revealed by theoretically calculating the Gibbs free energies (∆ G ) of various phase conversion processes, allowing for a simplified multi-step solution-processable spin-coating method to hinder the formation of detrimental 0D Cs 4 PbBr 6 phase and enhance the photovoltaic performance of a PSC because of its large exciton binding energy, which is regarded as a recombination center. By further accelerating the interfacial charge extraction with a novel 2D transition metal dichalcogenide ReSe 2 , the hole-free CsPbBr 3 PSC achieves a champion efficiency of 10.67% with an impressive open-circuit voltage of 1.622 V and an excellent long-term stability. This work provides an in-depth understanding on the precise Cs-Pb-Br perovskite phase control and the effect of derivatives on photovoltaic performance of advanced CsPbBr 3 PSCs.
研究领域:
材料科学
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光伏技术
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纳米材料
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能源化学
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半导体物理
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SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Shuai Wang,Hao Wang,Shixing Wang,Likang Fu,Libo Zhang
The removal of lead(II) from wastewater is conducive to reduce the risk of harmful metals to the environment and people. A magnetic organic framework adsorbent (Ni 0.6 Fe 2.4 O 4 -HT-COF) with high selectivity, repeatability and facile solid–liquid separation was devised through the condensation process of hexachlorocyclo-triphosphazene, trithiocyanuric acid and Ni 0.6 Fe 2.4 O 4 . At 298 K and pH = 5.0, the adsorbent showed remarkable Pb(II) adsorption capability. The removal rate reached 95.64 % at 10 min and the maximum adsorption capacity was 411.80 mg/g. The partition coefficient ( K Q ) of Pb(II) among the seven coexisting ions was 34079 mL/g and the adsorption efficiency was 97.15 %, indicating that the adsorbent can accurately capture Pb(II) from wastewater containing multiple ions. The PSO kinetic and the Langmuir isotherm models agreed with Pb(II) adsorption on Ni 0.6 Fe 2.4 O 4 -HT-COF, demonstrating that Pb(II) was removed by monolayer chemisorption. The adsorption was a spontaneous exothermic process using thermodynamic analysis. In addition, the adsorbent was able to maintain 91.77 % adsorption efficiency for Pb(II) after four adsorption–desorption cycles. Zeta potential and XPS analysis revealed that Ni 0.6 Fe 2.4 O 4 -HT-COF removed Pb(II) by electrostatic attraction and chelation. Density functional theory (DFT) was utilized to simulate the adsorption process, and the effects of different types of atoms on adsorption were discussed. The results demonstrate that the chelation and electrostatic interaction between Ni 0.6 Fe 2.4 O 4 -HT-COF and lead(II) ions were involved in the selective adsorption. The novel magnetic COF has a lot of potential for removing heavy metal Pb(II).
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Journal of the Taiwan Institute of Chemical Engineers
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2023
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IF 5.7
Yaru Li,Yanyan Liu,Caiying Liu,Li Feng,Shuao Yang,Yuxue Shan,Fei Xiao
Background Toxic metals such as Pb(II) and Cd(II) have thrown great threat to human health. Adsorption has been drawn more attention due to its low-cost, easy process and extensive raw materials. However, high efficient and environmental-friendly adsorbents are still in great need. Furthermore, the quantitatively adsorption mechanisms of Pb(II) and Cd(II) remain unclear. MgO-loaded lotus stem biochar was proposed as a highly efficient adsorbent to removal aqueous Pb(II) and Cd(II). Methods MgO-loaded biochar was prepared by using lotus stalk as a precursor to be pyrolyzed with MgCl 2 impregnation. Adsorption isotherms , kinetics, thermodynamics experiments were carried out. SEM, XRD, FTIR, XPS, etc. were employed to characterize the adsorbent before and after adsorption. Significant findings The adsorption capacities of MgO-loaded biochar for Pb(II) and Cd(II) reached 1379.54 mg/g and 404.04 mg/g, respectively, which were 5 and 20 times higher than that of the original biochar. The adsorption kinetics and thermodynamics indicated that the adsorption process was a chemisorption-based heat absorption reaction, and the characterization results showed the main adsorption mechanisms were ascribed to ion-exchange, precipitation, surface complexation between biochar and Pb(II)/Cd(II) ions, in which the ion exchange mechanism was quantitatively confirmed. Finally, MgO-loaded biochar has been proved to be an efficient adsorbent.
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NEW JOURNAL OF CHEMISTRY
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2023
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IF 3.3
Qingyuan Cheng,Liman Li,Mingxia Yu
Silver chalcogenide (Ag2X; X = S, Se, Te) quantum dots (QDs) have facilitated the biomedical applications of QDs due to their low toxicity and tunable emission reaching the second near-infrared window (NIR-II window, 1000–1700 nm). The photoluminescence intensity of Ag2S QDs and Ag2Se QDs is considerably enhanced via Pb doping. However, the developed Pb-doped Ag2S QDs lacked in vivo verification, and the toxicity of the Pb-doped Ag2X QDs was only preliminarily assessed. Although QDs containing Pb have been widely introduced into the field of biomedicine, there are still concerns regarding toxicity associated with Pb. In the present study, we prepared polyethylene glycol (PEG)-modified Pb-doped Ag2S QDs with better biocompatibility and tested their in vivo bioimaging and toxicity in comparison with Ag2S QDs modified with the same PEG under identical concentrations. Results indicated that the PEG-modified Pb-doped Ag2S QDs significantly enhanced the brightness of in vivo bioimaging and spatial resolution for vessels inside the tumor without increasing toxicity, assessed based on cell viability post incubation for 96 h, intracellular ROS level, DNA damage, early apoptosis and mitochondrial injury. Our study demonstrated that the PEG-modified Pb-doped Ag2S QDs could serve as an advanced fluorescent probe for various biomedical applications.
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Surfaces and Interfaces
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2022
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IF 6.137
Xueqiang Liu,Diandi Li,Jiguang Li,Jianle Wang,Shujie Liang,Hong Deng
Heavy metal ion pollution (e.g., Hg, Pb, Cr, Cd) that has a great threat to human health is a global concern, because of their great toxicity (e.g., carcinogenicity and mutagenicity). Therefore, it is necessary to find an economical and efficient technology to remove metal. In recent years, modified biochar plays an important role in the removal of heavy metal. However, most of the biochar modification methods rely on high temperature and long time, which limits their application in practical engineering. In this study, we firstly synthesized HMBC (MnO X -OBC, peanut shells as raw materials) using H 2 O 2 -NaOH method, where the materials only need to be modified for 10 min at ambient temperature to obtain high adsorption performance. The maximum Pb(Ⅱ) and Cd(Ⅱ) adsorption capacities of HMBC were 164.59 mg g − 1 and 36.77 mg g − 1 , respectively, which were 7.2 times and 5.6 times that of the unmodified PBC (peanut shells derived biochar ) , and the main adsorption mechanisms were complexation, ion exchange, cation-π interaction and precipitation. The adsorption process of lead and cadmium by HMBC was more consistent with the Freundlich model and Pseudo-second-order adsorption kinetics . HMBC had high selectivity for lead and cadmium, and the adsorption performance of HMBC was basically not reduced after five cycles. The above experimental results show that the newly prepared HMBC has the potential to treat lead and cadmium industrial wastewater.
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JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
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2022
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IF 2.042
Abdullah Akhdhar,Amr A. Yakout
Heavy metals sequestration from industrial discharges has aroused increasing attention worldwide to cleaner and sustainable water production by developing fast, effective eco-friendly nanosorbents. This study aimed to design a robust and fast nanocomposite to remove heavy metal ions, mainly Pb(II) and Cd(II). To this end, poly-(2-aminothiophenol); PATP was incorporated into graphene oxide; GO to fabricate PATP@GO nanocomposite. The structure and morphology of the novel nanocomposite were evaluated by FTIR, TEM, XRD, Raman, EDX, and TGA. Integrating PATP improved the adsorption efficiency of the GO from 61.3% to 98.6% for Pb(II) and 34.6% to 87.3% for Cd(II). Furthermore, the impact of pH, the mass of nanocomposite, metal ions concentrations, and coexisting ions were thoroughly investigated and optimized. The potential efficiency and adsorption capacity of PATP@GO nanocomposite toward Pb(II) was 98.6.00%, 142.9 mg.g-1 for Pb(II) at pH 5 and 87.3%, 125.0 mg.g-1 for Cd(II) at pH 7 within 25 minutes, respectively. This behavior was explained in terms of strong complex formation with the thiol groups of PATP, as well as the hydroxyl and carboxyl groups in GO. Kinetic studies were based on pseudo-second order (R2 > 0.99) and the adsorption data are best fitted with the Langmuir model. The excellent stability of PATP@GO nanocomposite enabled effective extractions for seven successive runs (98.6%-95.3% for Pb(II) and 87.3–85.1% for Cd(II)). The developed PATP@GO nanocomposite is believed to show fast and high potential in detoxifying of heavy metal ions from different environmental samples in aquatic life.
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ACS Applied Materials & Interfaces
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2022
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IF 10.383
Shaoshen Lv,Weiyin Gao,Gang Xing,Lingfeng Chao,Lin Song,Mingjie Li,Li Fu,Yonghua Chen,Chenxin Ran
Owing to narrow band gap and low toxicity, tin–lead (Sn–Pb) hybrid perovskites have shown great potential in photovoltaic applications, and the highest power conversion efficiency (PCE) of Sn–Pb perovskite solar cells (PSCs) has recently reached 23.6%. However, it is still challenging to prepare Sn–Pb films in open-air condition due to the Sn2+ oxidation of the precursor solution under this condition. In this work, we report the stabilizing of the Sn–Pb perovskite precursor solution by using ionic liquid methylammonium acetate (MAAc) as the solvent, which enables the fabrication of Sn–Pb films in air. MAAc is found to coordinate with the Sn–Pb precursor via abundant hydrogen bonding, which stabilizes the colloids and protects the Sn2+ stability in the precursor solution in air. Therefore, the durability of the Sn–Pb precursor solution based on the MAAc solvent is greatly improved, which enables the fabrication of efficient PSCs and achieves a champion PCE of ∼16% with robust device stability. Moreover, due to the chemical interactions of MAAc with Sn–Pb perovskites, the Pb leakage is also suppressed in the MAAc-based Sn–Pb PSCs. This work demonstrates a feasible strategy for reliable fabrication of Sn–Pb PSCs, which could also be applied in many other optoelectronic devices.
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高影响因子
Agronomy-Basel
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2023
·Vol. 13
·期 5
·1282
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IF 3.7
Jing Zhao,Lin Wang,Gang Chu
Attention has been paid to the application of biochar in the remediation of heavy metal contamination in soils. In this study, two modification methods, bleaching and activation, were used to enhance the biochar sorption of Cu(II) and Pb(II). Multiple techniques, including XPS, FTIR and13C NMR, were applied to investigate the properties of bleached and activated biochars. Combined with density functional theory (DFT) calculations, structural changes in the biochars and the main mechanism of Cu(II) and Pb(II) sorption were discussed after modification. The bleached biochar without non-condensed aromatic C possessed many oxygen-containing groups due to oxidation. In contrast, activation increased the specific surface area (SSA) and removed the carboxyl groups. Both modifications had an excellent effect on sorption by high-temperature biochars, especially the bleaching treatment. The bleached and activated biochars exhibited superior Pb(II) sorption compared with Cu(II) due to the larger electron cloud configuration of Pb(II). The significantly positive correlation of theKdvalues with the COOH/C=O content indicated that the oxygen-containing groups were responsible for Cu(II) and Pb(II) sorption. The DFT calculation demonstrated a higher energy for the cation–π interaction than for the complexation for Cu(II) sorption, whereas the opposite case was observed for Pb(II) sorption. The complexation and cation–π interaction were the main mechanisms of Cu(II) and Pb(II) sorption. This study provides important guidance for the application of modified biochars in the sorption of heavy metals in the environment.Keywords:biochar chemical modification;heavy metal;sorption;complexation;cation–π interaction
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ADVANCED FUNCTIONAL MATERIALS
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2023
·Vol. 34
·期 3
·2308341
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IF 19
Mingyang Li,Jindi Wang,Jisong Yao,Shalong Wang,Leimeng Xu,Jizhong Song
Although significant progress has been made in improving the external quantum efficiencies (EQEs) of perovskite quantum dot (QD) light-emitting diodes (QLEDs), understanding the degradation mechanism and enhancing stability remain a challenge. Herein, increasing the content of Br-based passivation ligands is shown to enhance the EQE up to 16.1% by reducing the defects of CsPbBr 3 QDs in a Br-rich environment. However, the operational lifetimes of perovskite QLEDs gradually decrease with the increase of halide content, owing to the intensified ion migration under continuous electric field confirmed by the current behavior of QLEDs and time-of-flight secondary-ion mass spectrometry. Furthermore, a thorough analysis of the relationship between electricity and luminance of QLEDs suggests that a small amount of residue oleic acid ligands could weaken ion migration. Accordingly, a halide- and acid-hybrid (HAH) co-passivation strategy is proposed to optimize the content of Br- and acid-based ligands, and achieve a maximum EQE of 18.6% and an operational lifetime ( T 50 , extrapolated) of 213 h for CsPbBr 3 QLEDs. This approach for passivating QDs combines the high efficiency of Br-based ligands with the improved stability of acid-based ligands. The study elucidates the correlation between ligands and device performance, highlighting the significance of two or even multiple ligands for efficient and stable perovskite QLEDs.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Huanggen Yang,Pei Zhang,Qi Zheng,Muhammad Usman Hameed,Saleem Raza
The presence of pollutants in drinking water has become a significant concern recently. Various substances, including activated carbon, membranes, biochar, etc., are used to remove these pollutants. In the present study, a new composite comprising cotton fabric and a mixture of Metal-Organic Frameworks (MOFs) was synthesized and used as an adsorbent for eliminating pollutants from wastewater. At first, the UiO-66 MOFs were prepared by a simple method of reacting Zirconium (IV) chloride (ZrCl 4 ) and p-Phthalic acid (PTA) after successful preparation of UiO-66 then modified its surface with amino functional groups by reacting with APTES to obtain UiO-66-NH 2 . Moreover, the cellulose cotton fabric (CF) surface was modified with Polydopamine (PDA) and obtained CF@PDA. Further, with the help of EDC-HCl and NHS, the UiO-66-NH 2 grafted on the surface of the CF@PDA and finally obtained CF@PDA/UiO-66-NH 2 . In addition, the adsorption study was performed toward RhB dye and Pb(II) metal ion pollutants. The maximum adsorption toward RhB dye was 68.5 mg/g, while toward Pb(II) metal ions was 65 mg/g. In addition, the kinetic study was also conducted and the result favoured the Pseudo-second order kinetic study. The adsorption isotherm was also studied and the Langmuir model was more fitted as compared with the Freundlich model. Moreover, the material has excellent regeneration and recycling ability after ten cycles. The significant adsorption ability, the novel combination of cotton and MOFs, and the recycling feature make our material CF@PDA/UiO-66-NH 2 a promising potential absorbent material for wastewater treatment and even in other important areas of water research.
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