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学者姓名：张莉
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Abstract ：
Removal of steroid hormones from aqueous environment is of prevailing concern because of their adverse impact on organisms. Using biochar derived from biomass as adsorbent to remove pollutants has become more popular due to its low cost, effectiveness, and sustainability. This study evaluated the feasibility of applying corn straw biochar (CSB) and dewatered sludge biochar (DSB) to reduce 17 beta-estradiol (E2) from aquatic solutions by adsorption. The experimental results showed that the adsorption kinetics and isotherm behavior of E2 on the two biochars were well described by the pseudo-second-order (R-2 > 0.93) and Langmuir models (R-2 > 0.97). CSB has higher E2 adsorption capacity than DSB, and the maximum adsorption capacity was 99.8 mg/g obtained from Langmuir model at 298 K, which can be attributed to the higher surface area, porosity, and hydrophobicity of this adsorbent. Higher pH levels (>10.2) decreased the adsorption capacities of biochar for E2, while the ionic strength did not significantly affect the adsorption process. The regeneration ability of CSB was slightly better than that of DSB. The possible adsorption mechanism for E2 on biochar is suggested as pi-pi interactions, H-bonding, and micropores filling. These results indicated that CSB has more potential and application value than DSB on reducing E2 from aqueous solutions when considering economy and removal performance.
Keyword ：
adsorption adsorption 17 beta-estradiol 17 beta-estradiol sludge sludge pyrolysis pyrolysis biochar biochar
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| GB/T 7714 | Guo, Wei , Yue, Junhui , Zhao, Qian et al. Comparison of 17 beta-Estradiol Adsorption on Corn Straw- and Dewatered Sludge-Biochar in Aqueous Solutions [J]. | MOLECULES , 2022 , 27 (8) . |
| MLA | Guo, Wei et al. "Comparison of 17 beta-Estradiol Adsorption on Corn Straw- and Dewatered Sludge-Biochar in Aqueous Solutions" . | MOLECULES 27 . 8 (2022) . |
| APA | Guo, Wei , Yue, Junhui , Zhao, Qian , Zhang, Li , Lu, Shaoyong . Comparison of 17 beta-Estradiol Adsorption on Corn Straw- and Dewatered Sludge-Biochar in Aqueous Solutions . | MOLECULES , 2022 , 27 (8) . |
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Abstract ：
The variations in the structural components of dissolved organic matter (DOM) during coal liquefaction wastewater (CLW) treatment are still unclear at present, limiting the further improvement and application of CLW treatment processes. In this study, the changes of DOM composition during air flotation, catalytic oxidation, biofiltration, ozonation, anoxic/oxic (A/O), and membrane bioreactor (MBR) which were applied in the full-scale CLW treatment, were investigated by three-dimensional excitation-emission matrix fluorescence and ultraviolet-visible spectroscopy. The dissolved organic carbon and chemical oxygen demand of the raw CLW reached 1965.2 mg/L and 5310.0 mg/L, respectively, with humic acid-like substances being as the dominant component (63.1%), and protein-like substances contributing a small amount (5.3%). Air flotation could treat humic acid-like substances more effectively. Catalytic oxidation and ozonation efficiently removed macromolecular aromatic substances with aliphatic chain substituents, resulting in the notable enhancement of the biodegradability of the organics. The DOM removal efficiency of biofiltration and A/O reached 86.0% and 92.3%, respectively, and simultaneously complex macromolecular substances with a high degree of aromaticity were formed. This study could provide a theoretical basis for optimizing the technical parameters and further improving the treatment efficiency of CLW. (C) 2019 Elsevier B.V. All rights reserved.
Keyword ：
Dissolved organic matter removal Dissolved organic matter removal Coal liquefaction wastewater treatment Coal liquefaction wastewater treatment Ultraviolet-visible spectroscopy Ultraviolet-visible spectroscopy Three-dimensional excitation-emission matrix fluorescence Three-dimensional excitation-emission matrix fluorescence
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| GB/T 7714 | Zhang, Li , Liu, Han , Wang, Yifei et al. Compositional characteristics of dissolved organic matter during coal liquefaction wastewater treatment and its environmental implications [J]. | SCIENCE OF THE TOTAL ENVIRONMENT , 2020 , 704 . |
| MLA | Zhang, Li et al. "Compositional characteristics of dissolved organic matter during coal liquefaction wastewater treatment and its environmental implications" . | SCIENCE OF THE TOTAL ENVIRONMENT 704 (2020) . |
| APA | Zhang, Li , Liu, Han , Wang, Yifei , Peng, Yongzhen . Compositional characteristics of dissolved organic matter during coal liquefaction wastewater treatment and its environmental implications . | SCIENCE OF THE TOTAL ENVIRONMENT , 2020 , 704 . |
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Abstract ：
This study combined spectroscopy techniques to assess the composition of refractory organics and highlighted the potential application of excitation-emission matrix (EEM) fluorescence spectroscopy within future monitoring of coal chemical wastewater treatment by the anammox process. The results showed that the anammox process could effectively degrade refractory organic substances, with fulvic-like, UV-humic acid, and Vis-humic acid component removal efficiencies of 43.61, 53.93, and 100%, respectively. In this study, EEM fluorescence spectroscopy was proven to be an effective method of assessing the removal of dissolved organic nitrogen during anammox treatment of mature coal chemical wastewater. Furthermore, remarkable accumulation (9.3-16.2%) of Ca. Kuenenia occurred in the anammox granules that underwent long-term cultivation in mature coal chemical wastewater, which provided the high nitrogen removal rate. The abundance of Anaerolineaceae and Bacteroides was vital in refractory organic degradation.
Keyword ：
Mature coal chemical wastewater Mature coal chemical wastewater Refractory organics Refractory organics Microbial community Microbial community Anammox Anammox
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| GB/T 7714 | Yang, Jiachun , Zhang, Li , Xu, Kechen et al. Using combined multiple techniques to characterize refractory organics during anammox process with mature coal chemical wastewater as influent [J]. | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH , 2018 , 25 (12) : 12107-12118 . |
| MLA | Yang, Jiachun et al. "Using combined multiple techniques to characterize refractory organics during anammox process with mature coal chemical wastewater as influent" . | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 25 . 12 (2018) : 12107-12118 . |
| APA | Yang, Jiachun , Zhang, Li , Xu, Kechen , Peng, Yongzhen . Using combined multiple techniques to characterize refractory organics during anammox process with mature coal chemical wastewater as influent . | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH , 2018 , 25 (12) , 12107-12118 . |
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