ENVIRONMENTAL RESEARCH
·
2020
·
IF 5.715
Xiangping Li,Chuanbin Wang,Jingnan Tian,Juping Liu,Guanyi Chen
Using biochar to remove heavy metals from water is environmentally beneficial. In this study, three kinds of chemical reagents, including ZnCl 2 , H 3 PO 4 and KMnO 4 , were introduced to modify the biochar derived from Enteromorpha prolifera . The performance of these modified biochar in removing Cadmium ions (Cd(II)) from water was investigated. The physicochemical properties of activated biochars were characterized by N 2 -sorption, thermal gravity and differential thermal gravity (TG/DTG), scanning electron microscopy (SEM), elemental analysis and Fourier transform infrared spectroscopy (FTIR). The results showed that the removal rate of Cd(II) from water by EP biochar modified with H 3 PO 4 was significantly increased, and the maximum adsorption capacity of Cd(II) reached to 423 mg/g for PBC. Moreover, the adsorption of Cd(II) from water by phosphoric acid modified biochar was very fast, and the saturation adsorption of Cd(II) was reached within 1 h. Compared with pseudo first-order model, pseudo secondary-order model was much more suitable for analyzing the adsorption kinetics data of Cd(II) onto KBC or ZBC. The adsorption of Cd(II) onto PBC was analyzed by the intra-particle diffusion kinetic model, where the value of R 2 was high as 0.98. The Langmuir model was fit for phosphoric acid modified biochar.
研究领域:
环境科学
·
材料科学
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Kewang Zheng,Keke He,Yuyang Du,Changchun Li,Lihang Shen,Yaoyao Zhang,Wei Li,Wei Wang,Caiqin Qin
To achieve the full utilization of excess Enteromorpha resources and the effective oxidation of organic contaminants from water, the FeCu composite nanoparticles encapsulated by N-doped graphene layers were produced via the thermal treatment of Enteromorpha -supported urea and metal ions, and used the materials to activate peroxymonosulfate (PMS) for RhB (Rhodamine B) oxidation. An appropriate iron-to-copper ratio is instrumental in enhancing the activation efficacy of the catalyst. The degradation percentage of 20 mg L −1 RhB was almost 100 %, utilizing the ECN@Fe 2 Cu of 0.1 g L −1 . Furthermore, ECN@Fe 2 Cu exhibits excellent anti-interference properties, reusability, and robust stability throughout the catalytic process. The radical quenching experiment, EPR, and electrochemical tests demonstrate that the main reactive oxygen in ECN@Fe 2 Cu/PMS/RhB system is 1 O 2 . XPS indicated that Fe 0 , Fe 3 C, Cu 0 , pyridinic N, and graphitic N doped in the carbon layer are the potential active sites. This work demonstrates that a high catalytic activity PMS activator can be produced by doping Fe/Cu/N with Enteromorpha .
研究领域:
环境科学
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材料科学
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催化化学
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2016
·Vol. 24
·期 6
·5179-5188
·
IF 2.76
Sun Jianzhang,Gao Baoyu,Zhao Shuang,Li Ruihua,Yue Qinyan,Wang Yan,Liu Siqi
It is confirmed that nano-ZnO (nZnO) has impact on environment and is considered as heavy metal pollutants. It is a new technology that applies coagulation process to simultaneous removal of the nanoparticles and heavy metals. Environmental chemical behavior of ZnO in water, such as the dispersion, aggregation, sedimentation, and dissolution of releasing metal ions, has been systematically studied in this paper. The result shows that three kinds of nZnO state such as compacted sediment, suspended, and released is separately 36.54 %, 40.61 %, and 22.86 %. Enteromorpha polysaccharide (Ep) was used together with polyaluminum chloride (PAC) in surface water purification. In order to study the mechanism of simultaneous removal of residual nZnO particles and Zn 2+ , coagulation process was further applied in this study. The evolution of flocs size, strength, and recovery ability and fractal structure due to Ep addition was systematically studied in this paper. Results indicated that PAC-Ep was efficient in removing nZnO and Zn 2+ , which leads to more than 95 % particles, 50–60 % natural organic matter (NOM) removed, and 35 % of resolved heavy metal ion adsorbing-chelation. Ep was an efficient coagulant aid in enhancing performance of coagulation and generating flocs with bigger sizes, faster growth rates, and higher recovery abilities. Additionally, the flocs formed by PAC-Ep presented a much looser structure than flocs formed only by PAC.
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研究领域:
环境科学
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化学工程
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DOI
PubMed
高影响因子
Journal of Food Measurement and Characterization
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2021
·Vol. 15
·期 5
·4623-4634
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IF 2.431
Zhou Jia-Min,Shi Mei-Jia,Wei Xiao-Yi,Zhou Tao
In order to improve the biological activities of polysaccharides from Enteromorpha prolifra (EP), the crude EP was degraded in the presence of pectinase and glucoamylase. The reaction conditions for the hydrolysis of EP were optimized as: hydrolysis temperature 45.2 °C, total enzyme concentration 48.5 U/mL, with an activity ratio of pectinase to glucoamylase 3.4:1, pH 4.5, degradation time 3 h. In vitro antioxidant activity of the enzymatic degraded polysaccharides from E. prolifra (EEP) obtained under the optimal conditions was significantly improved when compared to that of EP. The IC 50 values of EEP to scavenge DPPH, hydroxyl and superoxide anion radicals were found to be 3.31, 3.02 and 3.90 mg/mL, respectively, while those values for EP were 19.57, 5.96 and 5.51 mg/mL, respectively. At 5 mg/mL, the ferric iron reducing power of EEP was 1.41 times higher than that of EP; the ferrous chelating ability of EEP was 89.6%, being much than that of EP (54.9%). Furthermore, EEP was found to have stronger tyrosinase inhibitory effects than EP. At 3.0 mg/mL, the inhibition rates of EEP on monophenolase and diphenolase activity of mushroom tyrosinase were measured as 32.7% and 39.1%, respectively, while those values for EP were 16.3% and 21.1%, respectively. The inhibition of EEP on diphenolase activity of mushroom tyrosinase was reversible and of competitive-uncompetitive mixed-type. EEP prepared in this study may find application in food industry and cosmetics.
研究领域:
海洋生物学
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食品科学
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生物化学
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DOI
高影响因子
Scientific Reports
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2017
·Vol. 7
·期 1
·1-12
·
IF 4.259
Xu Yuanhong,Li Dan,Liu Mengli,Niu Fushuang,Liu Jingquan,Wang Erkang
Enteromorpha prolifera ( E. prolifera ), one of the main algae genera for green tide, significantly influences both the coastal ecological environment and seawater quality. How to effectively utilize this waste as reproducible raw resource with credible application mechanism are urgent environmental issues to be solved. Herein, E. prolifera was converted to attractive fluorescent carbon nanodots (CNDs) by one-pot green hydrothermal process. The purity and quantum yields for the as-prepared CNDs can be enhanced upon the post-treatment of ethanol sedimentation. The CNDs can be well dispersed in aqueous medium with uniform spherical morphology, narrow size distribution and average size of 2.75 ± 0.12 nm. The ease synthesis and relatively high quantum yields of the CNDs make E. prolifera inexpensive benefit to the human and nature, such as applications in efficient cell imaging and fiber staining. Furthermore, it was discovered that the fluorescence intensity of the CNDs can be selectively quenched upon Fe 3+ addition, which can be used for specific sensitive assay and removal of Fe 3+ in aqueous medium. More importantly, it was reasonably proposed that the quenching was resulted from the synergistic effects of CNDs aggregation and Fe 3+ -CNDs charge-transfer transitions due to the coordination interactions between Fe 3+ and the oxygenous groups on the CNDs.
研究领域:
环境科学
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材料科学
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生物技术
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2020
·
IF 6.306
Mei-Jia Shi,Fan Wang,Hui Jiang,Wen-Wen Qian,Yuan-Yuan Xie,Xiao-Yi Wei,Tao Zhou
To explore the potential application of enzymatic degraded polysaccharides from Enteromorpha prolifra (EEP) as antioxidant in fish oils, a stable fish oil emulsion system incorporating EEP was established. Effects of emulsifier (Tween 80, gum arabic and lecithin) and EEP concentration on the physical characteristics of fish oil emulsions were investigated. The results indicated that Tween 80 was the best choice, and 1% (w/w) of EEP was the optimum concentration for the preparation of fish oil emulsions. Influence of EEP on the oxidative stability and physical stability of fish oil emulsions was compared with that of antioxidants V E and TBHQ by determining the physical properties, lipid hydroperoxide formation, secondary reaction products formation, pH and long chain polyunsaturated fatty acid content, during storage at 45 °C. The results indicated that the fish oil emulsion system (5% oil, 1% EEP and 1% Tween 80, w/w) possessed good physical and oxidative stabilities.
研究领域:
食品科学
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生物化学
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DOI
高影响因子
JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS
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2026
·
IF 1.4
Yining Zhang,Yuxia Zhao,Jiatao Hu,Yu Luan,Zhaoxin Fan,Hao Lv,Shuaiyi Zhang,Xia Wang
Random lasers (RLs) differ fundamentally from conventional lasers by replacing engineered optical cavities with disorder-mediated multiple scattering feedback, enabling cavity-free emission through photon interactions in disordered gain media. RLs have demonstrated many application potentials in the domains of optics and optoelectronics because of their low coherence, multidirectionality, and multiple wavelengths. However, the principle and procedure of RL generation, as well as the method for achieving low-threshold emission, still present difficulties. This study demonstrates the replica symmetry breaking (RSB) in coherent RL systems utilizing Enteromorpha prolifera (EP), a marine bio-scatterer exhibiting multiscale photonic architecture. The transition from the photon paramagnetic phase to the spin glass phase is seen with the increase of the pump energy in this random liquid phase system. The multiscale structure of EP enables efficient dye adsorption while enhancing photon scattering to amplify optical feedback, thereby achieving stable coherent random lasing with a low threshold. Power Fourier transform analysis was employed to calculate the effective optical cavity length of the RL system, depicting the coherent lasing dynamics and determining the free spectral range. The bio-enabled RL system demonstrated remarkable spatial coherence control with good speckle-free imaging potentials through quantitative analysis of speckle contrast and derived mode numbers, revealing pump-energy-dependent correlations that elucidate intermodal interaction dynamics. These findings advance the fundamental understanding of disordered photonic systems while establishing a sustainable framework for engineering bio-derived RL sources with tailored coherence properties.
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高影响因子
POLYMER COMPOSITES
·
2020
·Vol. 42
·期 4
·1712-1726
·
IF 2.265
Zhichao Zhang,Xin Liu,HuiXin Wang,HaiFeng He,Ruiqin Bai
Due to the frequent occurrence of Enteromorpha prolifera “green tide” in recent years, how to solve the ecological disaster brought by the green tide and make maximal use of the Enteromorpha prolifera have become an urgent problem. In order to realize the resource utilization of marine biomass, we extract nanofibrillated cellulose (NFC) with high aspect ratio from Enteromorpha prolifera . Filamentous NFC is successfully extracted at nanometric scale with a diameters range of 20 ~ 40 nm, a length of several microns, and a crystallinity index of 57.2%. Then NFC/polyvinyl alcohol (PVA) composite films were prepared with NFC as fillers. In addition, for comparison, nanocrystals cellulose (NCC) with small aspect ratio was isolated from microcrystalline cellulose (MCC) to prepare NCC/PVA composite films. It is shown that because Enteromorpha prolifera ta NFC has a higher aspect ratio, it is easier to interpenetrate with PVA to form a dense network, and the lower concentration ensures the better dispersion of NFC in the matrix, so its enhancement effect on PVA composite films is better than that of NCC. When the NFC content was 0.1 wt %, the light transmittance of NFC/PVA composite film could reach more than 94%, and the swelling degree was 250%, which is 29% lower than that of the pure PVA film, the water resistance was improved. At the same time, the tensile strength, elastic modulus and toughness were 99.1%, 1547% and 117.9% respectively, which are higher than those of PVA.
研究领域:
材料科学
·
海洋生物学
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DOI
高影响因子
FOOD CHEMISTRY
·
2017
·
IF 4.529
Le-Le Shao,Jie Xu,Mei-Jia Shi,Xiao-Ling Wang,Yin-Ting Li,Li-Min Kong,Robert C Hider,Tao Zhou
In order to improve the antioxidant and antimicrobial abilities, hydroxamated degraded polysaccharides from Enteromorpha prolifera (HCDPE) were prepared from the corresponding carboxymethylated degraded polysaccharides (CDPE). HCDPE was characterized by FT-IR. The weight-average molecular weight of HCDPE was determined as 55.4 kDa. The in vitro antioxidant activity of HCDPE was evaluated by determining the radical (1,1-diphenyl-2-picrylhydrazyl (DPPH), hydroxyl and superoxide anion radicals) scavenging abilities and total antioxidant activity. It was found that DPPH radical scavenging ability and total antioxidant activity of HCDPE were significantly improved compared to those of CDPE. The inhibitory effects of polysaccharides against the five bacterial strains ( Bacillus subtilis , Staphylococcus aureus , Escherichia coli , Pseudomonas aeruginosa , Salmonella spp.) were also evaluated by bacterial inhibition zone and minimum inhibitory concentration (MIC) assays. The results indicated that CDPE and HCDPE possess marked antimicrobial ability, while such an effect was not observed for the crude polysaccharides (PE) and the degraded polysaccharides (DPE).
研究领域:
海洋生物学
·
食品科学
·
药学
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DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2023
·
IF 11.1
Hao Qi,Qirong Yang,Xinru Ma,Mengyu Wan,Zijun Zhang,Haoxi Ben,Lianghuan Wei,Zhaoying Li
The large-scale flooding of Enteromorpha prolifera (EP) forms “green tide”, which causes severe environmental problems. However, EP, an algal biomass , can be converted into syngas via pyrolysis . In this study, the pyrolysis mechanisms of the main compositional models of EP used to produce syngas are investigated using a combination of molecular dynamics simulations and fixed-bed experiments. Rhamnose (Rha), glucuronic acid (GlcA), aspartic acid (Asp), glutamic acid (Glu), and alanine (Ala) are used as the model compounds. The results indicate that H 2 is primarily produced by Glu (reached 24.68 vol%), followed by Asp and Ala, and CO is produced by Ala (reached 44.94 vol%), Glu, and Asp. The molecular dynamics simulation results indicate that the energy barriers for the pyrolysis of Glu and Ala to produce H 2 and CO, respectively, are the lowest. Three amino acids undergo dehydration, deamination, and decarboxylation . Moreover, the synergistic effect of the three amino acids in co-pyrolysis is reflected in the production of hydrogen groups from Asp; and the hydrogen group then attacks Glu to seize the hydrogen group on it to produce hydrogen . In addition, the H 2 content in the syngas produced by the separate pyrolysis of Rha (17.75 vol%) and GlcA (17.35 vol%) are similar and lower than those of the Rha and GlcA mixtures (19.12 vol%). The CO content in the pyrolysis gas of GlcA is higher than that of Rha. The simulation results prove that the amino acids undergo dicarboxylic and deamination reactions to produce amino acids and CO 2 . Meanwhile, polysaccharide sulfate breaks glycosidic bonds , producing free radicals such as hydrogen and hydroxyl groups at 700 K. When the temperature rises to 1900 K, the products of the previous stage further break the bond, producing small-molecule gases. However, the addition of polysaccharide model compounds promotes the production of CO 2 and C O groups and inhibits the formation of CO. Co-pyrolysis cannot increase H 2 , and the synergistic effect is not significant. Moreover, Ni and SAPO-34 exhibited good catalytic activities , which could increase syngas production. A raw materials to catalyst ratio of 5:1 is a good choice because it improves the H 2 and CO contents and makes economical use of Ni. With the increase of Ni catalyst cycles, H 2 content also shows a decreasing trend, from 22.86 vol% to 16.27 vol% (third cycle). With the number of SAPO-34 cycles, the increase of CO content, from 28.66 vol% to 32.67 vol% is explained by the increase in the specific surface area of the catalyst caused by repeated use, which increases the selectivity of C2 and enhances the ability of decarbonylation. This study focuses on the syngas reaction paths and pyrolysis reactions of different EP model compounds. The pyrolysis mechanism of EP to produce syngas is determined using a combination of experiments and simulations, providing a method for the energy utilization of EP.
研究领域:
环境科学
·
能源科学
·
生物化学
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DOI
高影响因子
Journal of Water Process Engineering
·
2026
·
IF 6.6
Wei Bao,Weijun Tian,Mengyuan Zou,Ke Yang,Bingkun Liu,Minghan Li,Bingjie Huo,Xinran Yu,Xinbo Wang
MIL-101(Fe)-modified E. prolifera biochar (MIL-BC) was successfully synthesized. • MIL-BC showed 89.14% enrofloxacin removal in mariculture wastewater. • MIL-BC showed over 86% removal efficiency at pH 3–5 and salinity 15–35‰. • Adsorption followed pseudo-second-order and Freundlich models. • Experimental and DFT results unraveled synergistic adsorption mechanisms. In this study, a metal-organic framework (MOF)-modified biochar (MIL-BC) was synthesized by decorating Enteromorpha prolifera -derived pristine biochar (BC) with MIL-101(Fe). Compared to BC, the adsorption performance of MIL-BC for enrofloxacin (ENR) in mariculture wastewater was significantly enhanced to 89.14%, and it maintained a high adsorption efficiency under varying solution pH and salinity conditions. Notably, this high adsorption efficiency remained practically stable across varying solution pH and salinity levels. Under acidic pH conditions, MIL-BC exhibited both acid resistance and high adsorption efficiency, achieving a peak adsorption removal of 97.77%. The adsorption kinetics and isotherms were well described by the pseudo-second-order and Freundlich models, respectively, indicating a heterogeneous multilayer adsorption process. The adsorption mechanisms primarily involved a synergistic combination of pore filling, π-π interactions, hydrogen bonding, complexation, electrostatic interactions, and hydrophobic interactions. Furthermore, density functional theory (DFT) calculations corroborated that the higher adsorption energy of MIL-BC fundamentally contributes to its enhanced adsorption performance. In the treatment of real seawater aquaculture wastewater, MIL-BC demonstrated exceptional adsorption performance, validating its tremendous potential as a high-performance adsorbent. Maintaining a removal efficiency of over 70% after five cycles. Consequently, this study offers a viable and highly promising technical pathway for the efficient removal of antibiotics from seawater aquaculture effluents. Download: Download high-res image (182KB) Download: Download full-size image
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高影响因子
ANALYTICA CHIMICA ACTA
·
2021
·
IF 6.558
Qi Dai,Xiaojuan Wang,Cai Liu,Zhenzhen Feng,Baosheng Ge,Xiqi Ma,Zhixiong Zhang,Jinyi Yu,Xiaoqiang Wang,Fang Huang
Melanoma, the skin cancer with the highest mortality rate, can be diagnosed at the early stage by detecting unique biomarkers. Over-expressed tyrosinase has been confirmed by dozens of clinical studies as an independent factor to evaluate the malignancy of melanoma. Using Enteromorpha Prolifera as the raw material, herein we develop a novel fluorescent probe , ECDY, which can sensitively detect the tyrosinase activity in different types of cells. More importantly, melanoma cells can be specifically distinguished through cell lysate measurements as well as the whole-cell imaging technique. Mechanically, the tyrosine groups on the surface of ECDY can be specifically recognized by tyrosinase and further converted into dopaquinone, which consequently causes the intramolecular fluorescence quenching of the probe through photoinduced electron transfer (PET). Tyrosinase can be detected within 20 min in the solution, and the detection limit is as low as 0.067 U mL −1 . For the in vitro demonstration, we evaluate the fluorescence decay of ECDY in response to the intracellular tyrosinase activity within the lysate of various cell lines, including non-cancerous, non-melanoma cancerous, and mouse melanoma ones. The experimental results verify that ECDY can accurately measure the apparent tyrosinase activity in different cell lines and detect melanoma cell lysate specifically. The confocal fluorescence imaging experiments further demonstrate that ECDY can distinguish melanoma cells from others significantly. We believe that ECDY provides a new strategy for the efficient detection of tyrosinase and melanoma cells, and is expected to apply as a clinical diagnosis platform.
研究领域:
癌症诊断
·
分子生物学
·
生物化学
·
荧光成像
·
生物医学工程
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）