JOURNAL OF HAZARDOUS MATERIALS
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2023
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IF 13.6
Shiwei Liu,Xing Cao,Weichen Yang,Runjie Liu,Lin Fang,Rui Ma,Juan Peng,Shuaifei Zheng,Fei Ji
Higher chlorine (Cl) content than lead (Pb) content in municipal solid waste incineration fly ash (MSWIFA) impeded the practical application of Pb 5 (PO 4 ) 3 Cl-derived magnesium potassium phosphate cement (MKPC) preparation strategy. Herein, Pb/Ca-rich lead slag (LS) was co-blended with MSWIFA to prepare MKPC for the synergistic treatment of both two solid wastes and the Pb-Cl solidification. The results showed that the resulting 15–15 (15 wt% MSWIFA and 15 wt% LS incorporation) sample achieved 25.44 MPa compressive strength , and Pb and Cl leaching toxicity was reduced by 99.18 % and 92.80 %, respectively. The X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses showed that Pb 2+ , Ca 2+ , phosphate and Cl - formed Pb x Ca 5−x (PO 4 ) 3 Cl in samples. The formation of Pb x Ca 5−x (PO 4 ) 3 Cl was also demonstrated by the high-angle annular dark field scanning transmission electron microscope (HAADF-STEM), while differences in the lattice characteristics of Pb x Ca 5−x (PO 4 ) 3 Cl and Pb 5 (PO 4 ) 3 Cl were found. In-situ XRD indicated that Ca 2+ accelerated the transformation of Pb 2+ to Pb 5 (PO 4 ) 3 Cl. After co-precipitating with Ca 2+ to form Pb x Ca 5−x (PO 4 ) 3 Cl, Pb 2+ continuously substituted Ca 2+ to eventually transform to Pb 5 (PO 4 ) 3 Cl. This work informs the synergistic treatment of MSWIFA and LS and offers new insights into the reaction mechanism between Pb 2+ , phosphate and Cl - under Ca 2+ induction.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD RESEARCH INTERNATIONAL
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2018
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IF 3.52
Bangheng Zhang,Bing Hu,Makoto Nakauma,Takahiro Funami,Katsuyoshi Nishinari,Kurt I. Draget,Glyn O. Phillips,Yapeng Fang
Previous studies have demonstrated that oligoguluronate (guluronate block extracted from alginate , GB) was an efficient modulator of the gelation and gelling properties of macromolecular alginate in the presence of calcium. Here we report totally different modulatory effects of the oligomer when used to modify the gelation of low methoxyl pectin (LMP). GB was found to promote the gelation of LMP in the range of R ([Ca]/[guluronate + galacturonate]) < 0.25 and could make non-gelling systems gellable. This is significantly different from the case of alginate where no gelation could be induced at all. In the range of 0.25 < R < 0.60, the addition of GB was found to inhibit the gelation of LMP, whereas it had a negligible effect on the gelation of alginate as long as a fixed R was considered. In the range of R > 0.60, GB was found to promote the gelation of LMP again, which is similar to the case of alginate. The results were in consistence with microstructural observations by AFM. The different modulatory effects of GB were thought to arise from the different gelation mechanisms of LMP and alginate, that is, a progressive dotting growth of LMP dimers vs. a critical zippering growth of alginate dimers during Ca-induced crosslinking. The mechanism of GB modulating the gelation of LMP was proposed and compared to that for alginate.
研究领域:
食品科学
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生物化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2024
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IF 8
Yang-Yang Hao,Ming-Xiu Xiao,Guo-Cui Mao,Jin-Peng Wang,Zhan-Kuo Guo,Bao-Xia Dong,Yun-Lei Teng
Capturing CO 2 using clamshell/eggshell-derived CaO adsorbent can not only reduce carbon emissions but also alleviate the impact of trash on the environment. However, organic acid was usually used, high-temperature calcination was often performed, and CO 2 was inevitably released during preparing CaO adsorbents from shell wastes. In this work, CaO-based CO 2 adsorbent was greenly prepared by calcium-induced hydrogenation of clamshell and eggshell wastes in one pot at room/moderate temperature. CO 2 adsorption experiments were performed in a thermogravimetric analyzer (TGA). The adsorption performance of the adsorbents obtained from the mechanochemical reaction (BM-C/E-CaO) was superior to that of the adsorbents obtained from the thermochemical reaction (Cal-C/E-CaO). The CO 2 adsorption capacity of BM-C-CaO at 650 °C is up to 36.82 wt%, but the adsorption decay rate of the sample after 20 carbonation/calcination cycles is only 30.17%. This study offers an alternative energy-saving method for greenly preparing CaO-based adsorbent from shell wastes.
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
LWT-FOOD SCIENCE AND TECHNOLOGY
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2021
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IF 4.952
Chengrong Wen,Nan Wang,Yingying Dong,Jie Tian,Shuang Song,Hang Qi
ι-Carrageenan (IC) is a water-soluble polysaccharide containing high sulfate groups, whose gel properties are influenced by charged materials. The rheological and thermal properties, water mobility, morphology, and structure of the binary blends of calcium-ι-carrageenan (CCa) with different charged amino acids including arginine (Arg, positive), glutamine (Gln, neutrality), and glutamic acid (Glu, negative) were evaluated. Different charged amino acids affected the gel properties of CCa with different mechanisms. There were the highest elastic (G′) and viscous (G″) moduli of CCa gels at 0.5 mg/mL Arg and 1 mg/mL Gln, while both G′ and G″ were decreased by adding Glu. The water mobility of CCa gel was weakened by Arg and Glu, while no significant influence was observed for Gln. The thermal properties of CCa were improved by amino acids. Gln fills the gaps in the network structure through hydrogen bond and weak electrostatic interaction to stabilize the gel structure, while Arg and Glu affect the formation of gel through hydrogen bonds and strong electrostatic interaction. The information obtained from this research will provide insights into the further application of carrageenan and amino acid combinations in the food , biomedical, and cosmetic fields.
研究领域:
食品科学
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生物医学工程
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化妆品化学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Chunjuan Yang,Li Zhang,Mengyuan Li,Xiaoming Lyu,Chaochao Ma,Shuang Jiang,Yue Zhao,Zhibin Wang,Ying Zhang,Yinghe Ji,Xuanyang Ding,Xinhui Huang,Chunli Gan,Xiaotong Wang,Yunpeng Wang,Yang Li,Yanhui Gao
Monitoring anionic pollutants in aquatic environments and biological fluids is essential for safeguarding environmental safety and human health. However, the detection of anions via surface-enhanced Raman scattering (SERS) remains challenging due to their negative charge and weak interaction with traditional substrates. Herein, we present a universal SERS platform based on calcium-induced aggregation of silver nanoparticles (Ag@BOCNPs) that enables sensitive, reproducible, and label-free detection of eight anions—including fluoride, sulfate, phosphate, and nitrate—within complex aqueous and biological matrices. The platform exhibits exceptional performance for eight ions detection, achieving ultralow limits of detection (LODs, S/N = 3) of 0.001 mg/L and limits of quantification (LOQs, S/N = 10) of 0.003 mg/L. The method demonstrates high stability and excellent anti-interference capability, allowing direct fluoride detection in human urine without pretreatment. By integrating SERS spectral data with machine learning algorithms (KNN, RF, SVM, etc.), accurate classification of anion species and quantification of fluoride exposure levels were achieved. This integrated analytical strategy not only addresses a key limitation in anion detection, but also offers a powerful tool for environmental monitoring and human exposure assessment, particularly in regions affected by water contamination and fluorosis risk.
研究领域:
环境科学
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分析化学
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纳米技术
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光谱学
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机器学习
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公共卫生
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毒理学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Ginseng Research
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2019
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IF 4.029
Dongxia Gou,Xuejing Pei,Jiao Wang,Yue Wang,Chenxing Hu,Chengcheng Song,Sisi Cui,Yifa Zhou
Background Malignant arrhythmias require drug therapy. However, most of the currently available antiarrhythmic drugs have significant side effects. Ginsenoside Rg2 exhibits excellent cardioprotective effects and appears to be a promising candidate for cardiovascular drug development. So far, the oral toxicity and antiarrhythmic effects of Rg2 have not been evaluated. Methods Acute oral toxicity of Rg2 was assessed by the Limit Test method in mice. Subchronic oral toxicity was determined by repeated dose 28-day toxicity study in rats. Antiarrhythmic activities of Rg2 were evaluated in calcium chloride–induced arrhythmic rats. Antiarrhythmic mechanism of Rg2 was investigated in arrhythmic rats and H9c2 cardiomyocytes. Results The results of toxicity studies indicated that Rg2 exhibited no single-dose (10 g/kg) acute oral toxicity. And 28-day repeated dose treatment with Rg2 (1.75, 3.5 and 5 g/kg/d) demonstrated minimal, if any, subchronic toxicity. Serum biochemical examination showed that total cholesterol in the high-dose cohort was dramatically decreased, whereas prothrombin time was increased at Day 28, suggesting that Rg2 might regulate lipid metabolism and have a potential anticoagulant effect. Moreover, pretreatment with Rg2 showed antiarrhythmic effects on the rat model of calcium chloride induced arrhythmia, in terms of the reduced duration time, mortality, and incidence of malignant arrhythmias. The antiarrhythmic mechanism of Rg2 might be the inhibition of calcium influx through L-type calcium channels by suppressing the phosphorylation of Ca 2+ /calmodulin-dependent protein kinase II. Conclusion Our findings support the development of Rg2 as a promising antiarrhythmic drug with fewer side effects for clinical use.
研究领域:
药理学
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心脏病学
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毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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