CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Wenkun Zhang,Ting Huang,Yu Ren,Shuai Yang,Xinyao Zhao,Maosen Yuan,Jinyi Wang,Qin Tu
Pharmaceuticals and personal care products (PPCPs) are gaining attention due to their persistence in the environment. Therefore, the development of novel adsorbents to remove them is strongly anticipated. In this study, an improved dual ice-template assembly method had been used for the preparation of ZIF-67/QGO/SB-CS aerogel through ZIF-67, benzoquinone-modified graphene oxide (QGO), and sulfobetaine-modified chitosan (SB-CS) for the adsorption and removal of PPCPs in water. We reported for the first time that the chitosan composite aerogel has antifouling, bacterial filtration and oil-water separation abilities with excellent PPCPs adsorption performance and reusable, which would be a viable option for long-lasting adsorbents for PPCPs in water.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2024
·
IF 5.7
Yu Wang,Qianzhan Yang,Huadong Zhang,Zhenghong Wang,Ailin Wu,Yun Luo,Qianru Zhou
Background The ongoing infusion of pharmaceutical and personal care products (PPCPs) into ecosystems sustains a perpetual life cycle and leads to multi-generational exposures. Limited understanding of their environmental impact and their intrinsic ability to induce physiological effect in humans, even at low doses, pose great risks to human health. Few scholarly works have conducted systematic research into the occurrence of PPCPs within potable water systems. Concurrently, the associated monitoring techniques have not been comprehensively examined with regards to the specific nature of drinking water, namely whether the significant presence of disinfectants may influence the detection of PPCPs. Results A modified approach in terms of detailed investigation of sample preservation and optimization of an in-lab fabricated solid phase extraction (SPE) cartridge filled with DVB-VP and PS-DVB sorbent was proposed. Favorable methodological parameters were achieved, with correlation coefficients spanning from 0.9866 to 0.9998. The LODs of the PPCPs fluctuated from 0.001 to 2 μg L −1 , while the LOQs varied from 0.002 to 5 μg L −1 . The analysis of spiked samples disclosed a methodological precision of 2.31–9.86 % and a recovery of 52.4–119 %. We utilized the established method for analyzing 14 water samples of three categories (source water, finished water and tap water) from five centralized water supply plants. A total of 24 categories encompassing 72 PPCPs were detected, with the concentrations of PPCPs manifested a marked decrease from source water to finished water and finally to tap water. Significance Our research meticulously examined the enhancement and purification effects of widely used commercial SPE cartridges and suggested the use of in-lab fabricated SPE cartridges packed with DVB-VP and PS-DVB adsorbents. We also conducted a systematic evaluation of the need to incorporate ascorbic acid and sodium thiosulfate as preservatives for PPCP measurement, in consideration of the unique characteristics of drinking water matrices, specifically, the significant concentration levels of disinfectants. Furthermore, the proposed method was effectively employed to study the presence of PPCPs in source water, finished water, and tap water collected from centralized water supply plants.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 2
·607
·
IF 4.6
Juntao Guo,Yihui Zhang,Jinjun Li,Feng Wu,Liting Luo
Pyrite has been used in photo-Fenton reactions for the degradation of pollutants, but the application of photo-Fenton processes with extra H2O2in real water/wastewater treatment has still been limited by the economic cost of H2O2and artificial light sources. Herein, citric acid (CA) and simulated/natural sunlight are used to develop a pyrite-based photo-Fenton system (pyrite–CA–light) in situ generating H2O2through the enhanced activation of molecular oxygen. The degradation of pharmaceuticals and personal care products (PPCPs), especially acetaminophen (APAP) as the main target pollutant, in the pyrite–CA–light system was investigated. The effects of influencing factors such as various organic acids, APAP concentration, pH, pyrite dosage, CA concentration and co-existing anions (HCO3−, Cl−, NO3−, SO42−and H2PO4−) were examined. At a pyrite dosage of 0.1 g L−1, CA concentration of 0.6 mM and an initial pH of 6.0, the degradation efficiency of APAP (30 μM) was 99.1% within 30 min under the irradiation of xenon lamp (70 W, λ ≥ 350 nm). Almost the same high efficiency of APAP degradation (93.9%) in the system was achieved under natural sunlight irradiation (ca. 650 W m−2). The scavenging experiments revealed that the dominant active species for degrading APAP was hydroxyl radical (HO•). Moreover, a quantitative structural–activity relationship (QSAR) model for pseudo-first-order rate constants (kobs) was established with a high significance (R2= 0.932,p= 0.001) by using three descriptors: octanol–water partition coefficient (logKow), dissociation constant (pKa) and highest occupied molecular orbital (HOMO). This work provides an innovative strategy of the photo-Fenton process for the degradation of PPCPs using natural minerals and ordinary carboxylic acid under sunlight.Keywords:pyrite;citric acid;sunlight;photo-Fenton;PPCPs;QSAR
研究领域:
环境科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Zhiqiang Guo,Hongli Wang,Liang Wang,Bin Zhao,Yiran Qian,Hongwei Zhang
Pharmaceuticals and personal care products (PPCPs) are universally detected in natural waters, posing potential risks to drinking water safety. Nanofiltration (NF) is an advanced technology for water purification; however, its removals of PPCPs are unsatisfying, especially for hydrophobic species. In this study, the 3D architecture of nanomaterials were used to manipulate the performance the polyamide (PA) thin-film nanocomposite (TFN) membrane. In-situ addition of polyethyleneimine (PEI) successfully induced the assembly of ZIF-8 nanocrystals into star-shaped clusters (ZIF-8-PEI) due to the coordination between PEI and Zn 2+ . Together with the improved hydrophilicity, these ZIF-8-PEI clusters became excellent scaffolds for water drop retention after discretely loading onto the porous substrate. The conical protrusions of the ZIF-8-PEI clusters supported the defect-free PA film produced by the interfacial polymerization (IP), leaving big interfacial cavities underneath. These cavities worked as gutters for water transport, and the water permeance of the optimal TFN was 79% higher than that of the pristine thin-film composite (TFC) membrane. Moreover, the water impregnated cavities markedly alleviated the hydrophobic interaction between the PA film and hydrophobic PPCPs, impeding the transport of PPCPs across the membrane. Our results demonstrated the importance of the 3D architecture of nanofillers for the improving membrane performance.
研究领域:
水处理
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膜科学
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环境工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yanei Xue,Wenjun Sun,Penghui Shao,Yixing Yuan,Fuyi Cui,Wenxin Shi
Pharmaceuticals and personal care products (PPCPs) have drawn increasing regulatory attention and research interest in recent years. Since it does not require any additional dissolved oxidants, heterogeneous photocatalytic technology has attracted much interest in the efficient degradation of PPCPs in recent years. The present study examined the degradation kinetics of PPCPs using Fe-ZnS@TiO 2 /nickel foam photocatalytic system (ZTN PS) in Milli-Q water and a solid surface water background, including estrone, diclofenac, cyclophosphamide, triclosan, and sulfamethoxazole. To evaluate ZTN PS, MF-treated water samples from the Songhua River (SR) were obtained and used as reaction matrices with spiked additions of PPCPs. The influence of single ion addition on degradation kinetics was investigated to determine the degradation rule under various water parameter conditions. Using high-resolution mass spectrometry to identify transformation products (TPs), potential degradation pathways of a few PPCPs were hypothesised. During photocatalysis, the oxidation properties of different oxidants (photogenic holes, OH, O 2 − ) on different structural sites of PPCPs were analysed. To examine possible environmental impacts of PPCP degradation by ZTN PS, cytotoxicity and estrogen (ER) receptor-binding activity were evaluated. It was found that ZTN PS substantially reduced cytotoxicity and estrogenic activity while degrading PPCPs in Milli-Q water. Also, the presence of complex substances in water did not significantly affect the toxicity of mixed PPCP degradation TPs. However, comparing natural water to Milli-Q water, the toxicity and ER-binding activity of TPs under natural water background increased marginally (9%–13％). Thus, this study aimed to understand the effects of post-ZTN PS PPCPs and TPs on human and environmental health at the cellular level.
研究领域:
环境科学
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毒理学
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药理学
✓ 已验证
DOI
高影响因子
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
·
2019
·Vol. 103
·期 1
·193-198
·
IF 1.65
Zhang Wenjie,Wang Jun,Wang Jinhua,Zhu Lusheng,Lv Ning,Wang Rui,Ahmad Zulfiqar
The widespread use of pharmaceutical and personal care products (PPCPs) has attracted much attention and the impact of PPCPs on indigenous microbial communities has become increasingly important in recent days. Five common PPCPs, including doxycycline (DOX), ciprofloxacin (CIP), triclocarban (TCC), carbamazepine (CBZ), and sulfadimidine (SMZ), were selected and their effects on soil microbial respiration were studied at concentrations of 0, 0.2, 1, 5, 25 and 50 mg/kg. The results of this study indicate that the effect of five common PPCPs on soil microbial respiration was dose- and time- dependent. At low concentrations (0.2 and 1 mg/kg), CBZ and SMZ exhibited an activation effect on microbial soil respiration at 1 day (58.02%, 26.39% and 1.54%, 1.76% at 0.2 and 1 mg/kg respectively), while DOX showed inhibition for all tested concentrations at 1 day of incubation. At high concentrations (25 and 50 mg/kg) CIP and SMZ showed an inhibitory effect (− 69.13%, − 80.86% for 25 and 50 mg/kg, respectively), while TCC and CBZ exhibited stimulatory effect (38.07%, 9.64% and 4.06%, 12.18% at 25 and 50 mg/kg, respectively) at 1 day of incubation. Our findings indicate that the effect of tested PPCPs on soil microbial respiration had an inhibitory or stimulatory effect based on the dose and extent of time.
研究领域:
环境科学
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微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Pengxiao Liu,Xinzhang Yu,Yang Liu,Rong Han,Houfen Li
This study established a novel three-dimensional electrochemical oxidation coupled with forward osmosis and reverse osmosis (3DEO-FO-RO) system with the purpose to achieve simultaneous degradation and rejection of pharmaceuticals and personal care products (PPCPs) in wastewater. 18 frequently detected PPCPs were selected as the target pollutants to prepare the synthetic wastewater with a concentration of 200 μg/L for each pollutant. Ti/IrO 2 –Ta 2 O 5 –SnO 2 mesh anode, titanium mesh cathode and Sn–Sb–Bi/γ-Al 2 O 3 particles electrodes were integrated in the 3DEO-FO reactor. Experimental results demonstrated that degradation efficiency exceeding 98.5 % and rejection exceeding 99.4 % for each PPCP were achieved simultaneously in the 3DEO-FO-RO processes at a current density of 1 mA/cm 2 after 8 h treatment. Despite variations in applied current density, the 3DEO-FO-RO processes exhibited superior PPCPs removal efficiencies, particularly for refractory compounds, compared to the 2DEO-FO-RO processes. Increased hydroxyl radical (·OH) generation in the 3D reactor was considered to be responsible for the excellent performance. Furthermore, results derived from ultraviolet (UV) absorption spectra and fluorescence excitation-emission matrix (EEM) spectra provided additional validation for the effective removal of PPCPs in the 3DEO-FO-RO processes, along with evidence indicating the decomposition of PPCPs into smaller constituents. Ultimately, the 3DEO-FO-RO process demonstrated its capacity in removing PPCPs from actual secondary effluent from a wastewater treatment plant. This integrated system coupling 3D EO with FO-RO membranes can provide an efficient approach for simultaneous degradation and rejection of trace contaminants for wastewater reuse.
研究领域:
环境科学
·
水处理技术
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电化学工程
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Roujia Du,Qianxin Zhang,Frank Leresche,Mengmeng Zhong,Ping Chen,Jun Huang,Shubo Deng,Fernando L. Rosario-Ortiz,Gang Yu
To determine and predict the reaction rate between 3 DOM* and PPCPs in various water bodies, this study defines a reaction rate coefficient ( α 3 DOM ∗ ) to describe the reaction between 3 DOM* and PPCPs. As the values also included the inhibition effect of DOM's antioxidant moieties, the calculation of α 3 DOM ∗ is inconsistent with that of a bimolecular rate constant via the steady-state kinetic method. The α 3 DOM ∗ values of 12 selected PPCPs were determined in two DOM solutions and ten DOM-containing water samples collected from typical surface water bodies in Beijing. The Pearson coefficients between nine predictors including the absorbance ratio (E2/E3), specific absorption coefficient at 254 nm (SUVA 254 ), fluorescence index (FI), biological index (BIX), humification index (HIX), pH, total organic carbon (TOC), total fluorescence intensity (TFI) and TOC normalized TFI (TFI/TOC) and α 3 DOM ∗ were examined. Correlation patterns for sulfonamides, β-blockers and diclofenac supported the electron transfer pathway, and was distinctly different from those appeared for FQs where quenching effect played a main part. TFI and TFI/TOC were recognized as the most useful surrogates in empirically predicting α 3 DOM ∗ . For PPCPs that went through the electron transfer pathway, α 3 DOM ∗ could be well fit to the Rehm-Weller model assuming a proportional relationship between TFI and △G et . For FQs, α 3 DOM ∗ was found to linearly correlated with TFI/TOC. The α 3 DOM ∗ values determined in this study enrich the database of PPCPs photolysis parameters, and the correlation analysis provides reference for forecasting PPCPs fate in the aquatic environment.
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
·
2022
·
IF 16.744
Runren Jiang,Guanghua Lu,Tianjian Dang,Min Wang,Jianchao Liu,Zhenhua Yan,Haijiao Xie
The use of photocatalysis to remove pharmaceuticals and personal care products (PPCPs) is emerging as a promising method, but few studies have investigated the simultaneous degradation of multiple PPCPs. Here, we constructed a hydrogen-bonded bridged MIL-101(Cr)–NH 2 /BiOCl-OH (MCN/BOCH) system to degrade sulfamethoxazole and ethyl p-aminobenzoate alone or in combination. The MCN/BOCH system effectively removed two PPCPs under visible light and exerted a synergistic effect on degrading the combined pollutants. Meanwhile, the degradation products of the mixture changed significantly compared with that of a single pollutant, and the toxicity of the composite pollutants was significantly reduced through the combined effect of synergistic degradation. The bridging of hydrogen bonds effectively accelerated charge transfer at the heterojunction interface under visible light. Moreover, the separated redox side of the MCN/BOCH heterojunction system and the electron donor and acceptor effect of the two PPCPs significantly enhanced the synergistic photocatalytic degradation performance. This work might be useful for controllable designs of hydrogen-bonded photocatalysts for the treatment of complex PPCP pollution.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Environmental Science and Ecotechnology
·
2022
·
IF 9.371
Qixin Liu,Xuan Feng,Ning Chen,Fei Shen,Haichuan Zhang,Shuo Wang,Zhiya Sheng,Ji Li
A large number of pharmaceuticals and personal care products (PPCPs) persist in wastewater, and the consumption of PPCPs for COVID-19 control and prevention has sharply increased during the pandemic. This study investigated the occurrence, removal efficiency, and risk assessment of six typical PPCPs commonly used in China in two wastewater treatment plants (WWTPs). Ribavirin (RBV) is an effective pharmaceutical for severely ill patients with COVID-19, and the possible biodegradation pathway of RBV by activated sludge was discovered. The experimental results showed that PPCPs were detected in two WWTPs with a detection rate of 100% and concentrations ranging between 612 and 2323 ng L −1 . The detection frequency and concentrations of RBV were substantially higher, with a maximum concentration of 314 ng L −1 . Relatively high pollution loads were found for the following PPCPs from influent: ibuprofen > ranitidine hydrochloride > RBV > ampicillin sodium > clozapine > sulfamethoxazole. The removal efficiency of PPCPs was closely related to adsorption and biodegradation in activated sludge, and the moving bed biofilm reactor (MBBR) had a higher removal capacity than the anoxic-anaerobic-anoxic-oxic (AAAO) process. The removal efficiencies of sulfamethoxazole, ampicillin sodium, ibuprofen, and clozapine ranged from 92.21% to 97.86% in MBBR process and were relatively low, from 61.82% to 97.62% in AAAO process, and the removal of RBV and ranitidine hydrochloride were lower than 42.96% in both MBBR and AAAO processes. The discrepancy in removal efficiency is caused by temperature, hydrophilicity, and hydrophobicity of the compound, and acidity and alkalinity. The transformation products of RBV in activated sludge were detected and identified, and the biodegradation process of RBV could be speculated as follows: first breaks into TCONH 2 and an oxygen-containing five-membered heterocyclic ring under the nucleosidase reaction, and then TCONH 2 is finally formed into TCOOH through amide hydrolysis. Aquatic ecological risks based on risk quotient (RQ) assessment showed that PPCPs had high and medium risks in the influent, and the RQ values were all reduced after MBBR and AAAO treatment. Ranitidine hydrochloride and clozapine still showed high and medium risks in the effluent, respectively, and thus presented potential risks to the aquatic ecosystem.
研究领域:
环境科学
·
药理学
·
微生物学
✓ 已验证
DOI
高影响因子
Frontiers of Environmental Science & Engineering
·
2024
·Vol. 18
·期 10
·1-14
·
IF 6.1
Zhao Taisheng,Liu Xiaoman,Huai Lankun,Feng Rui,Yan Tao,Xu Weiying,Zhao Yanxia
Photocatalytic membranes offer an effective strategy to overcome the difficulties of solid-liquid separation and secondary contamination of powdered photocatalysts. MXene is a 2D material of layered Ti 3 C 2 , which is considered to limit electron-hole separation and contribute to photocatalysis. In this work, the etched Ti 3 C 2 MXene was loaded on the surface of ceramic membranes using polydopamine (PDA) as a binder, followed by one-step calcination to produce TiO 2 nanoparticles (NPs) in situ. The characterizations supported that the TiO 2 /Ti 3 C 2 ceramic membranes had high mechanical strength while retaining the layered structure of Ti 3 C 2 , which was conducive to the inhibition of electron and hole complexation, improving the photocatalytic performance. Degradation experiments revealed that the material showed enhanced degradation of pharmaceuticals and personal care products (PPCPs) such as ciprofloxacin (CIP), tetracycline (TCN) and ibuprofen (IBP). The LC-MS and toxicity prediction models indicated that the developmental toxicity of CIP degradation products decreased with prolonged photocatalytic reaction, exhibiting no acute toxicity to fish. The MT650 exhibited significantly enhanced water flux properties (320 L/(m 2 ·h)). The TiO 2 /Ti 3 C 2 ceramic membranes explored in this work are expected to target the treatment of PPCPs with excellent engineering promise.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yizhou Tu,Liqin Han,Xiaolu Ding,Xingqi Zhu,Guizhou Xu,Xianchuan Xie,Qing Zhou,Chendong Shuang,Aimin Li
Refractory pharmaceuticals and personal care products (PPCPs) represented by diclofenac, ibuprofen, sulfamethoxazole, and carbamazepine have become risk compounds in municipal wastewater, and they possessed generalized antimicrobial properties along with numerous electron-withdrawing groups, difficult to biodegrade through bacterial-based systems. In contrast, fungi could thrive even in environments contaminated by antibiotics, among which the white rot fungus Trametes versicolor ( T. versicolor ) possessed enzymatic degradation systems represented by laccase, capable of degrading complex chemical bonds. However, almost all white rot fungi reactors were conducted at pH 4.5, which limited their application. In this study, the neutral degradation environment was developed for T. versicolor , and the pH-dominated laccase degradation mechanism was clarified. It was found that T. versicolor could possess both laccase activity and production at pH 6.5, with better application potential compared to acidic conditions. Accordingly, fluidized bed T. versicolor reactors were developed, and their application potential under neutral pH was validated for the first time in municipal wastewater. Compared with reactors without any adjustment, the four refractory PPCPs removal by T. versicolor reactors was increased from 26% to 72%, and T. versicolor abundance was increased from almost zero to 27% by adding carbon and nitrogen sources and adjusting pH to 6.5. Metabolic pathway analysis revealed the cytochrome P450 and amide hydrolase functional genes of T. versicolor , which were critical for PPCPs degradation. Nine transformation products of PPCPs were identified, further validating the multiple capabilities of T. versicolor for both hydroxylation and complex chemical structures (carbon–nitrogen bonds, epoxides, carbon–sulfur bonds) degradation. Furthermore, these findings also provided new ideas for the degradation of more complex aminobenzene or chlorinated aniline wastewater.
研究领域:
环境科学
·
微生物学
✓ 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）