CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Lulu Chen,Xinyuan Zhang,Ruonan Feng,Xiaona Dong,Junhe Lu,Canlan Jiang
Pharmaceuticals and personal care products (PPCPs) are widely used worldwide and cause potential soil pollution. Fe 2+ -activated persulfate (PS) processes (Fe-PAPs) are promising techniques for soil remediation. However, a knowledge gap exists in the mechanistic insights into the dominant factors affecting the degradation of different PPCPs in varied soil types. This study systematically investigated the roles of soil components and pollutant properties in the degradation of three PPCPs (triclosan (TCS), triclocarban (TCC), and naproxen (NPS)) in the nine soils in the Fe 2+ /PS system. The degradation efficiencies of TCS and NPS ranged from 10.92 % to 91.62 % and 46.59 % to 99.81 %, respectively, whereas nearly no degradation was observed for TCC. PPCPs with high water solubility, high energies of the highest occupied molecular orbital (E HOMO ), low p K a values, low energy gap (ΔE), or low vertical ionization potential (VIP) were more favorable for degradation. XPS analysis suggested that aliphatic carbon (Ali–C–C(H)), ether or alcohol carbon (C–O), and aldehyde or ketonic carbon (C O) on SOM significantly inhibited TCS degradation. The results of ROS quenching experiments showed that SO 4 •− and 1 O 2 played major roles in TCS and NPS degradation in the six soils, with the relative contributions ranged from 24.82 % to 99.14 % and 0.15 % to 73.40 %, respectively. The interaction between soil components, active species, and pollutants resulted in the distinct intermediates of TCS and NPS in different soils. Our findings provide in-depth insights into the role of soil composition and pollutant properties on the remediation of PPCP-contaminated soils in Fe-PAPs.
研究领域:
环境科学
·
土壤化学
·
污染物降解
·
药物化学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Fan Yang,Jiao Liu,Yanjie Xie,Meijie Ren
Pharmaceuticals and personal care products (PPCPs) were widely present in the water environment, posing a threat to both the ecological environment and human health. Dissolved organic matter (DOM) was ubiquitous in aquatic system and could form strong complexes with PPCPs, thereby interfering with accurate quantification. This paper proposed a novel method that utilized ultraviolet differential spectroscopy to accurately quantify PPCPs in DOM-PPCPs coexisting systems. A linear regression equation was established between UV–vis absorbance change (ΔA) at the characteristic peaks of specific PPCP and its concentration, resulting in the creation of a standard curve. The coefficient of determination (R 2 ) of the linear regression equations established by four DOM (humic acid, fulvic acid, bovine serum albumin and sodium alginate) and the given PPCPs were consistently above 92 %. Moreover, real water samples were collected for the purpose of conducting a standard recovery experiment. The recovery rates of three types of PPCPs (carbamazepine, sodium sulfadiazine and triclosan) ranged from 90 % to 120 %, suggesting the feasibility of quantifying PPCPs in the DOM-PPCPs coexisting system using this method. The method proposed for quantifying PPCPs in DOM-PPCPs coexisting systems using UV differential spectroscopy introduced a new approach to quantifying PPCPs.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
WATER RESEARCH
·
2020
·
IF 9.13
Simiao Li,Xiuwei Ao,Chen Li,Zedong Lu,Wenfeng Cao,Fangfang Wu,Shuming Liu,Wenjun Sun
The UV/NH 2 Cl process is an emerging advanced oxidation process (AOP) that is greatly effective in degrading pharmaceuticals and personal care products (PPCPs). However, detailed information regarding the process is lacking. The degradation of ibuprofen (IBP, an electron-withdrawing PPCP) and naproxen (NPX, an electron-donating PPCP) in UV/NH 2 Cl and UV/NaClO processes was performed to investigate the applicability and security of the UV/NH 2 Cl process and compare with those of UV/NaClO. UV/NH 2 Cl was effective in degrading both IBP and NPX and the degradation followed pseudo-first order kinetics (k IBP = 0.0037 cm 2 /mJ and k NPX = 0.0044 cm 2 /mJ). This indicated the broad applicability of UV/NH 2 Cl to different kinds of PPCPs. Ranges of values of UV intensity (0.3–1.0 mW/cm 2 ) and pH (6.0–8.0) showed little effect on the degradation of PPCPs by UV/NH 2 Cl based on UV Dose but HCO 3 − (2–8 mM), natural organic matter (NOM, 2–8 mg/L), and the natural water matrixes were inhibitory. Increasing the dosage of NH 2 Cl from 0.15 mM to 0.75 mM, resulted in an even increase of k IBP ; however, k NPX increased slowly after 0.3 mM NH 2 Cl. Mechanism experiments involving nitrobenzene showed that •OH was the major radical involved in degrading IBP and NPX via UV/NH 2 Cl. The electron spin resonance spectroscopy and kinetic modeling results also indicated the larger amount of •OH and weaker reactive chlorine species (mainly ClO• and ClO 2 •) in UV/NH 2 Cl compared with UV/NaClO. Compared to UV/NaClO in synthetic and natural water, UV/NH 2 Cl was a more stable degrader with little pH- and substrate-dependence, while UV/NaClO preferred degrading the electron-donating PPCP and at low pH. The UV/NH 2 Cl produced less halogenated disinfection byproducts (DBPs) (even nitrogenous DBPs) and was less cytotoxic theoretically than UV/NaClO based on the DBPs included in this study. Thus UV/NH 2 Cl process may be an effective AOP for water treatment .
研究领域:
环境科学
·
水处理工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Cong Ma,Mengyuan Su,Jinyun Lu,Yiyang Pan,Liang Wang,Xiangji Kong
The amphiphilic interlayer regulates IP and forms a heterogeneous interface. • The TFC-5:5 has an ultra-thin (~60 nm) polyamide layer with numerous wrinkles. • The TFC-5:5 membrane reaches 23.5 L·m −2 ·h −1 ·bar −1 flux and 97.5% salt rejection. • The TFC-5:5 membrane features highly efficient PPCPs removal. • The TFC-5:5 membrane shows an excellent long-term performance Thin film composite (TFC) nanofiltration (NF) membranes suffer from a permeability–selectivity trade-off when removing pharmaceuticals and personal care products (PPCPs) from water. To address this issue, we fabricated an interlayer composed of laterally alternating hydrophilic polyacrylonitrile (PAN) and hydrophobic polyvinylidene fluoride (PVDF) nanofibers on a polyethersulfone (PES) ultrafiltration support layer. By precisely controlling the interfacial polymerization conditions, the interlayer composition influences the thickness and chemical structure of the polyamide (PA) layer. The optimized TFC-5:5 membrane exhibited an ultrathin (~60 nm), highly crosslinked (79.1%), and wrinkled PA layer, achieving a water permeance of 23.5 L·m −2 ·h −1 ·bar −1 with Na 2 SO 4 rejection above 97.5%, strong anti-fouling ability, and significantly improved PPCP removal. These results demonstrate that a macroscopically uniform yet microscopically heterogeneous hydrophilic–hydrophobic alternating nanofiber structure promotes PA wrinkling, mitigates the permeability–selectivity trade-off, and provides a versatile platform for the development of high-performance separation membranes. Download: Download high-res image (141KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Advanced Energy and Sustainability Research
·
2022
·Vol. 3
·期 12
·2200138
·
IF 0
Linlin Zhang,Lu Liu,Xiaodong Zhang,Chengjun Ge,Jianjun Liao
Pharmaceuticals and personal care products (PPCPs) have attracted widespread attention due to their durability to the environment. Therefore, it is highly desirable to develop new technologies that are environmentally friendly, energy saving, and compatible to degrade these pollutants. In this study, a vis–NIR-driven and highly efficient S-scheme photocatalyst, WO 3− x /S doped g-C 3 N 4 , is used for PPCPs degradation. The results show that the photocatalytic activity of WO 3− x /S doped g-C 3 N 4 composite system for PPCPs is much higher than that of WO 3− x and g-C 3 N 4 . The introduced WO 3− x has a great positive effect on the photocatalytic performance of WO 3− x /S doped g-C 3 N 4 S-scheme composite photocatalyst for both naproxen and diclofenac. Due to the fast photogenerated carrier separation brought by the S-scheme, the WO 3− x /S-doped g-C 3 N 4 nanocomposite exhibits enhanced performance in photocatalytic PPCPs degradation. The degradation rate of naproxen is 99.2%, and the degradation rate of diclofenac can also be as high as 99.5%. This research has important reference value for the synthesis of WO 3 -based S-scheme photocatalysts for energy and environmental applications.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
NANOTECHNOLOGY
·
2023
·Vol. 34
·期 47
·475701
·
IF 3.5
Jiayu Ma,Xu Jin,Mengjuan Yang,Ximeng Zhao,Shanshan Ding,Bin Wang,Xiuyan Li
In this research work, a reusable and efficient 2D/1D heterogeneous structured photocatalyst based on amine-functionalized halloysite nanotubes (MHNTs) and Bi2WO6 nanosheet (BWO) was prepared using a facile hydrothermal method for decomposing PPCPs under simulated sunlight. On the degradation of tetracycline hydrochloride (TCH), the effects of composite catalysts prepared under various conditions were discussed. The results showed that over BWO/MHNTs with a mass ratio was 3:1, the synthesizing temperature was 120 °C and the precursor pH value was 1, the TCH (10 mg l−1) degradation efficiency reached 100% after 1 h irradiation of simulated sunlight. Moreover, BWO/MHNTs composites kept good recovery and stable photocatalytic activity after 5 cycles. The excellent dispersion of Bi2WO6 on the surface of clay minerals and the oxygen vacancy enhanced electron–hole separation may be responsible for the its high activity and stability. Futhermore, the radical capture test demonstrated that ·O−2 was primarily responsible for the photodegradation of TCH. Thus, BWO/MHNTs composites exhibit a good application prospect in the field of sunlight-driven photocatalytic degradation towards PPCPs pollutants in water.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2016
·Vol. 74
·期 1
·276-286
·
IF 1.064
Huang Bin,Xiong Dan,Zhao Tingting,He Huan,Pan Xuejun
Biomorphic nano-hydroxyapatite (HAP) was fabricated by a co-precipitation method using cotton as bio-templates and employed in adsorptive removal of ofloxacin (OFL) and triclosan (TCS) that are two representative pharmaceuticals and personal care products (PPCPs). The surface area and porosity, crystal phase, functional group, morphology and micro-structure of the synthesized HAP were characterized by Brunauer–Emmett–Teller isotherm, X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning electron macroscopic and transmission electron microscopy. The effects of initial pH, ionic strength, initial concentration, contact time and temperature on the removal of PPCPs were studied in a batch experiment. The adsorption of OFL and TCS was rapid and almost accomplished within 50 min. Kinetic studies indicated that the adsorption process of OFL and TCS followed the pseudo-first-order and pseudo-second-order models, respectively. The Freundlich isotherm described the OFL adsorption process well but the adsorption of TCS fitted the Langmuir isotherm better. Thermodynamics and isotherm parameters suggested that both OFL and TCS adsorption were feasible and spontaneous. Hydrogen bond and Lewis acid–base reaction may be the dominating adsorption mechanism of OFL and TCS, respectively. Compared to other adsorbents, biomorphic HAP is environmentally friendly and has the advantages of high adsorption capacity, exhibiting potential application for PPCPs removal.
研究领域:
环境科学
·
材料科学
·
纳米技术
·
环境污染与控制
·
吸附材料
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Yue Yin,Mengqi Shi,Yi Ren,Shu Wang,Ming Hua,Junhe Lu,Weiming Zhang,Lu Lv
A novel multifunctional metal-organic frameworks (MOFs) UiO-66@Fe 3 O 4 @UiO-66 (UiO = University of Oslo) was fabricated to adsorb pharmaceuticals and personal care products (PPCPs) under near neutral conditions. We designed a wrinkle structure on the surface of UiO-66@Fe 3 O 4 @UiO-66 by seeded growth strategy. These wrinkles were composed of Fe 3 O 4 nanoparticles and outermost UiO-66. It made the specific surface area of the MOFs increases, and provided multiple active sites for a representative pollutant salicylic acid (SA) adsorption. Moreover, lattice defects formed during secondary growth facilitating the coordination interaction between SA and the secondary building unit of UiO-66@Fe 3 O 4 @UiO-66 under near neutral conditions. These advantages made the adsorption capacity of per unit mass UiO-66 in UiO-66@Fe 3 O 4 @UiO-66 about 42% higher than that of the pristine UiO-66, and the removal rate of 1 mg L −1 SA reach 64.5% in real wastewater. Furthermore, magnetic Fe 3 O 4 particles in the wrinkles exhibited outstanding magnetic separation performance. So that UiO-66@Fe 3 O 4 @UiO-66 can be effectively separated from the liquid media and regenerated after adsorption. The results show that the wrinkled MOFs could be used as an excellent candidate for SA adsorption in real wastewater. More importantly, this strategy could guide the preparation of different kind of MOFs to adsorb PPCPs in wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2020
·Vol. 11
·期 5
·1899-1913
·
IF 5.721
Xiaojuan Bai,Cong Wang,Xuyu Wang,Tianqi Jia,Boxuan Sun,Shengqi Yang,Di Li,Junqi Li,Haiyan Li
Pharmaceutical and personal care products (PPCPs) are the most common hazardous environmental pollutants. Accordingly, PDI anion radicals are promising photocatalysts to transform PPCPs into non-toxic CO2 and H2O for their clean and efficient production. In the present work, we successfully synthesized an electrophilic PDI supramolecular (sEACA-PDI) compound with high electron affinity through a simple gelation process. Its electron affinity is contributed by its side chain, which enhances the electrophilicity of its perylene core edge. Consequently, sEACA-PDI tends to form anion radicals to provide a SOMO orbital, which allows sEACA-PDI to obtain electrons successively from organic pollutants. Its side chain also generates a polarized surface electric field, building an efficient pathway for electron transfer. The high flexibility and freedom of the sEACA-PDI side chain is beneficial to form a cluster structure. Numerous strongly electrophilic groups are exposed on the surface of sEACA-PDI, which further enhance its electron affinity. sEACA-PDI exhibited high photocatalytic degradation efficiency for classical organic pollutants via successive electrophilic attack, i.e. the k for DCF was 0.923 h−1. Also, sEACA-PDI achieved a k value of 0.351 h−1 for the degradation of MB. This work proposes a promising strategy for developing PDI anion radicals with high electron affinity, and also provides new insights for the treatment of environmental pollutants.
研究领域:
环境科学
·
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Irfan Ijaz,Aysha Bukhari,Ammara Nazir,Ezaz Gilani,Hina Zain,Attia Shaheen,Mohammed Rafi Shaik,Mujeeb Khan
Designing effective adsorbents for adsorption of the threatening level of pharmaceuticals and personal care products (PPCPs) pollution is an immediate challenge for wastewater treatment. In the current work, molybdenum borides (MoBT x ) were first composited with silk fibroin (SF) through ultrasonic self-assembly. Then, the MoBT x @SF composite’s surface was modified with phytic acid (PA) to create MoBT x @SF@PA composite. The as-synthesized MoBT x @SF@PA adsorbent was developed to effectively remove indomethacin (IDM) and ceftriaxone (CEF). Due to the abundance of functional groups, highly exposed available active sites, and higher BET (Brunauer-Emmett-Teller) surface area (786.8 m 2 /g), MoBT x @SF@PA demonstrated an outstanding adsorption capability for IDM (549.89 mg/g) and CEF (959.18 mg/g), exceeding the earlier reported adsorbents. A kinetic study revealed that the interaction between the MoBT x @SF@PA adsorbent and PPCPs obeyed a pseudo-second-order model (PSO), implying that chemisorption controls the adsorption process. The Langmuir isotherm model and thermodynamic study indicated that IDM and CEF adsorption followed monolayer adsorption and were endothermic and spontaneous. Fourier-transformed infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) were used to explore the adsorption mechanism. Multiple hydrogen bindings, electrostatic interactions, high surface area, and porosity of the composite were primarily responsible for remarkable adsorption capacity. These results highlight a versatile approach for MoBT x -based adsorbent preparation with exceptional adsorption qualities appropriate for real-world PPCPc-polluted wastewater treatment.
研究领域:
环境科学
·
材料科学
·
药学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Yuting Liu,Yinyu Chen,Huiying Ding,Jingchuan Xue,Yang Yang,Xianhui Li
Achieving the removal of pharmaceuticals and personal care products (PPCPs) while selectively rejecting divalent cations like Ca 2 ⁺ and Mg 2 ⁺ without compromising water productivity and recovery remains a challenge for existing commercial nanofiltration (NF) membranes used in drinking water treatment. These challenges stem from the limited pore size and insufficient negatively charged surface density of conventional NF membrane. This study employed a polydopamine-coated nanofibrous membrane, uniformly embedded with in-situ grown ZnO nanoparticles, as a porous support layer. In the interfacial polymerization process, the fabricated substrate regulated the diffusion of aqueous monomers, thereby optimizing the polyamide layer on composite NF membrane with thinner thickness, stronger surface density, crumple structure and appropriate pore size. This resulting membrane demonstrated excellent PPCP rejection while maintaining high permeability to essential minerals. Under optimal conditions, the designed membrane achieved an impressive water flux at about 21 L m⁻ 2 h⁻ 1 bar⁻ 1 and showed significant selectivity for PPCP and divalent cation, with diclofenac sodium rejection exceeding 90 % and Ca 2 ⁺ rejection of below 20 %. The incorporation of ZnO nanoparticles enlarged the active filtration surface and created additional water pathways, resulting in a water permeation rate that was double that of a pristine NF membrane, without compromising PPCP/divalent cation selectivity. This work provides valuable insights and important correlations for developing NF membranes aimed at enhancing water production while preserving selectivity for PPCP/divalent cation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Xi Quan,Jun Zhang,Linlin Yin,Wei Zuo,Yu Tian
In this work, novel Fe 3 O 4 @α-CD nanoparticle was synthesized for the catalytic activation of peroxymonosulfate (PMS) towards carbamazepine (CBZ) degradation. The effect of α-CD content, Fe 3 O 4 @α-CD dosage and PMS concentration on the catalyst activity were systematically evaluated. The results showed the synergistic effect between α-CD and Fe 3 O 4 can greatly improve the removal efficiency of CBZ in the Fe 3 O 4 @α-CD/PMS system. CBZ removal efficiency gained 73.37% in 5 min at pH 7.0 with PMS 1 mM, Fe 3 O 4 @α-CD load 0.4 g/L and CBZ 10 μM. The variation in the removal efficiency of different PPCPs under the same conditions mainly ascribed to the adsorption of α-CD and the activation of PMS by Fe 3 O 4 to generate free radicals, in which sulfate radical (SO 4 ·− ) and hydroxyl radicals ( · OH) was determined as the reactive species in the Fe 3 O 4 @α-CD/PMS system. Density functional theory (DFT) calculations was also utilized to optimize the structure of composite and confirmed that the charge distribution mainly concentrate on Fe 3 O 4 . As deduced from the LC-MS analysis, the possible CBZ degradation pathways were proposed. CBZ degradation efficiency still reached 54% after three cycle, which indicates that Fe 3 O 4 @α-CD catalyst has a good reusability potential and practical applications.
研究领域:
环境科学
·
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）