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| 1 | 土壤组分对磷形态和磷吸附-解吸的影响——基于三峡库区消落带落干期土壤显示文摘通过选择性去除土壤组分的方法,探讨了三峡库区消落带落干期3种典型土壤中有机质、铁氧化物组分对磷形态和磷吸附-解吸的影响.结果发现,三峡库区消落带落干期3种典型土壤去除的有机质以易氧化组分为主,去除有机质后,土壤中各种磷形态的含量变化较小.然而,去除游离铁氧化物后,土壤中各种磷形态的含量均发生明显降低.同时,去除有机质、游离铁氧化物组分后并未改变土壤中各种磷形态的相对大小顺序,均为:钙结合磷(Ca-P)>有机磷(OP)>铁/铝结合磷(Fe/Al-P).此外,黄壤(FJ)、紫色潮土(KX)和灰棕紫泥(FL)去除有机质后对磷的吸附能力较原始土壤仅分别降低0.5%、2.3%、6.5%(P=0.017<0.05,显著性差异),表明3种土壤中有机质组分对磷吸附的影响较小;而去除游离铁氧化物后对磷的吸附能力分别降低45.6%、51.7%、43.9%(P=0.004<0.05,显著性差异),表明土壤中游离铁氧化物组分是决定磷吸附大小的重要因素.另外,3种土壤去除游离铁氧化物后较原始土壤吸附磷的解吸能力明显增加,表明游离铁氧化物组分是控制3种土壤吸附磷的解吸的重要因素.FL土壤去除有机质组分后较原始土壤吸附磷的解吸能力略有降低,而KX和FJ土壤去除有机质组分后较原始土壤吸附磷的解吸能力无明显差异,表明有机质组分对土壤吸附磷的解吸的影响与土壤类型有关. | 闫金龙 吴文丽 江韬 魏世强 | 2019 | 中国环境科学2019，39，3： | 14 |
| 2 | Preliminary investigation of phosphorus adsorption onto two types of iron oxide-organic matter complexes显示文摘Iron oxide(FeO)coated by natural organic matter(NOM)is ubiquitous.The associations of minerals with organic matter(OM)significantly changes their surface properties and reactivity,and thus affect the environmental fate of pollutants,including nutrients(e.g.,phosphorus(P)).In this study,ferrihydrite/goethite-humic acid(FH/GE–HA)complexes were prepared and their adsorption characteristics on P at various p H and ionic strength were investigated.The results indicated that the Fe O–OM complexes showed a decreased P adsorption capacity in comparison with bare Fe O.The maximum adsorption capacity(Q_(max))decreased in the order of FH(22.17 mg/g)>FH-HA(5.43 mg/g)>GE(4.67 mg/g)>GE-HA(3.27 mg/g).After coating with HA,the amorphous FH–HA complex still showed higher P adsorption than the crystalline GE–HA complex.The decreased P adsorption observed might be attributed to changes of the Fe O surface charges caused by OM association.The dependence of P adsorption on the specific surface area of adsorbents suggests that the Fe O component in the complexes is still the main contributor for the adsorption surfaces.The P adsorptions on Fe O–HA complexes decreased with increasing initial p H or decreasing initial ionic strength.A strong dependence of P adsorption on ionic strength and p H may demonstrate that outer-sphere complexes between the OM component on the surface and P possibly coexist with inner-sphere surface complexes between the Fe O component and P.Therefore,previous over-emphasis on the contributions of original minerals to P immobilization possibly over-estimates the P loading capacity of soils,especially in humic-rich areas. | Jinlong Yan Tao Jiang Ying Yao Song Lu Qilei Wang Shiqiang Wei | 2016 | Journal of Environmental Sciences2016，28，4： | 9 |
| 3 | 聚乳酸/蒙脱土纳米复合材料的制备与热学性能研究显示文摘利用两种不同碳链长度的季铵盐对蒙脱土(MMT)进行有机化改性,再通过熔融插层法制备聚乳酸(PLA)/有机化蒙脱土(OMMT)纳米复合材料,并利用X射线衍射仪(XRD)、差示扫描量热仪(DSC)和热失重分析仪(TGA)对复合材料的插层结构、结晶行为和热稳定性进行研究。研究表明:两种季铵盐均对MMT成功有机化改性,MMT的层间距由1.50 nm扩大至2.10 nm左右,且两种OMMT的热稳定性均适用于熔融插层;两种PLA纳米复合材料均呈现插层型结构,OMMT的含量对复合材料结构影响不大,MMT片层可起到异相成核剂的作用,从而促进PLA结晶提高结晶度,同时添加OMMT可以提高PLA的初始分解温度(To),但有机改性剂的降解会降低PLA的终止分解温度(Tf)。 | 邢剑 叶争 徐珍珍 倪庆清 | 2019 | 安徽工程大学学报2019，34，6： | 4 |
| 4 | From illite/smectite clay to mesoporous silicate adsorbent for efficient removal of chlortetracycline from water显示文摘A series of mesoporous silicate adsorbents with superior adsorption performance for hazardous chlortetracycline(CTC) were sucessfully prepared via a facile one-pot hydrothermal reaction using low-cost illite/smectite(IS) clay,sodium silicate and magnesium sulfate as the starting materials.In this process,IS clay was 'teared up' and then 'rebuilt' as new porous silicate adsorbent with high specific surface area of 363.52 m^2/g(about 8.7 folds higher than that of IS clay) and very negative Zeta potential(- 34.5 mV).The inert Si- O- Si(Mg,Al) bonds in crystal framework of IS were broken to form Si(Al)- O^- groups with good adsorption activity,which greatly increased the adsorption sites served for holding much CTC molecules.Systematic evaluation on adsorption properties reveals the optimal silicate adsorbent can adsorb 408.81 mg/g of CTC(only 159.7 mg/g for raw IS clay) and remove 99.3%(only 46.5%for raw IS clay) of CTC from 100 mg/L initial solution(pH 3.51;adsorption temperature 30℃;adsorbent dosage,3 g/L).The adsorption behaviors of CTC onto the adsorbent follows the Langmuir isotherm model,Temkin equation and pseudo second-order kinetic model.The mesopore adsorption,electrostatic attraction and chemical association mainly contribute to the enhanced adsorption properties.As a whole,the high-efficient silicate adsorbent could be candidates to remove CTC from the wastewater with high amounts of CTC. | Wenbo Wang Guangyan Tian Li Zong Yanmin Zhou Yuru Kang Qin Wang Aiqin Wang | 2017 | Journal of Environmental Sciences2017，29，1： | 2 |
| 5 | Gemini型表面活性剂改性蒙脱土的制备与应用研究进展显示文摘总结了阳离子Gemini表面活性剂改性蒙脱土的制备方法,列出了Gemini表面活性剂在层间展现不同的排列方式,描述了含不同烷基链、间隔基、头基和官能团的Gemini表面活性剂对有机蒙脱土的影响,并对Gemini表面活性剂改性的有机蒙脱土应用研究进行了展望。 | 王彦博 康菡子 袁璐璇 蒋文伟 | 2021 | 现代化工2021，41，4： | 2 |
| 6 | Influence of sodium dodecyl sulfate coating on adsorption of methylene blue by biochar from aqueous solution显示文摘Biochar is regarded as a promising new class of materials due to its multifunctional character and the possibility of effectively coupling different properties. With increasing introduction into the environment, environmental chemicals such as surfactants will load onto the released biochar and change its physicochemical characteristics and adsorption behavior toward pollutants. In this study, sodium dodecyl sulfate(SDS), as one type of anionic surfactant, was coated onto biochar with different loading amounts. The influence of SDS loading onto biochar's physicochemical properties were investigated by Fourier transform infrared(FT-IR) spectroscopy, elemental analysis, zeta potential and Brunauer–Emmett–Teller(BET) surface area and pore size distribution analysis. Results showed that the pore size of the biochar decreased gradually with the increase of SDS loading because of the surface-adsorption and pore-blocking processes; the p H of the point of zero charge(pHPZC) decreased with increasing SDS loading. Although surface-coating with SDS decreased the pore size of the biochar, its adsorption capacity toward Methylene Blue(MB) significantly increased. The biochar-bound SDS introduced functional groups and negative charges to the biochar surface, which could thus enhance the adsorption of MB via hydrogen bonding and electrostatic interaction. The results can shed light on the underlying mechanism of the influence of anionic surfactants on the adsorption of MB by biochar. | Wei Que Luhua Jiang Chen Wang Yunguo Liu Zhiwei Zeng Xiaohua Wang Qimeng Ning Shaoheng Liu Peng Zhang Shaobo Liu | 2018 | Journal of Environmental Sciences2018，30，8： | 1 |
| 7 | 有机黏土矿物的研究进展及污水治理中的应用显示文摘环境中有机污染物、阴离子污染物以及重金属污染物的存在会对人类生命安全造成损害,因此受到研究者的重视。近年来,国内外研究人员使用不同材料对这些污染物进行吸附,其中有机黏土矿物因具有成本低、粒径小、比表面积大、阳离子交换容量高等优势备受瞩目。相比于未改性的黏土矿物,有机黏土矿物对有机污染物、阴离子污染物以及重金属污染物具有更高的吸附效率。文章主要综述了阳离子表面活性剂、阴离子表面活性剂、阳、阴离子表面活性剂、双子表面活性剂、非离子表面活性剂以及聚合物和硅烷偶联剂对黏土矿物的改性方法及改性机理,重点概述了有机黏土矿物在污水治理方面的应用,最后基于实际应用现状,对有机黏土矿物的发展与挑战进行了展望。 | 武晓郯 王意茹 李芙蓉 李崇瑛 | 2022 | 山东化工2022，51，24： | 0 |
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