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国家自然科学基金(20274017)

作品数:48 被引量:708H指数:17
相关作者:陈金龙张全兴李爱民费正皓刘福强更多>>
相关机构:南京大学江苏工业学院南京林业大学更多>>
发文基金:国家自然科学基金江苏省自然科学基金江苏省科技攻关计划更多>>
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48 条 记 录,以下是 1-10
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吸附树脂对山梨酸的吸附作用及其热力学性质被引量:56
2003年
通过静态吸附实验 ,研究了NDA 15 0等 3种大孔吸附树脂对水溶液中山梨酸的吸附行为及其热力学性质。结果表明 ,山梨酸在 3种树脂上的吸附等温线均符合Freundlich等温吸附方程 ,且都表现为优惠吸附。在研究的浓度范围内 ,NDA 15 0的吸附能力约为CHA 111的 1 4~ 2 4倍和XAD 4的 2 1~ 4 0倍 ,树脂表面极性和微孔结构在吸附过程中起决定作用。吸附焓变ΔH <0且绝对值均小于 4 2kJ/mol,表明它们都属于放热的物理吸附过程。吸附自由能变ΔG表明 ,NDA 15 0具有更为优越的微孔结构。吸附熵变ΔS <0说明吸附质分子在吸附树脂表面上的运动相比溶液中受到更大的限制。
罗刚张全兴李爱民刘福强邵莉陈金龙
关键词:大孔吸附树脂山梨酸热力学性质
2-噻吩乙酸在三种不同树脂上的吸附热力学和动力学研究被引量:35
2004年
通过静态吸附实验 ,研究了 XAD-4,NDA-1 0 0和 ND-90吸附树脂对水溶液中 2 -噻吩乙酸的吸附热力学及动力学特性 ,结果表明 ,2 -噻吩乙酸在 XAD-4树脂上是单层吸附 ,符合 Langmuir等温吸附方程 ,吸附过程符合准一级动力学吸附方程 . 2 -噻吩乙酸在 NDA-1 0 0和 ND-90树脂上的吸附也能用 Langmuir等温吸附方程表示 ,但并不只是单层吸附 ,而主要是由毛细管凝聚和微孔填充作用造成的吸附 ,吸附过程可分为大孔和中孔区的吸附以及微孔区的吸附两个阶段 ,两个阶段都符合准一级动力学吸附方程 .
魏瑞霞陈金龙陈连龙费正皓李爱民张全兴
关键词:树脂热力学动力学
EFFECT OF WEAK INTERACTIONS ON PHENOL ADSORPTION FROM AQUEOUS SOLUTIONS BY AMINATED POLYMERIC ADSORBENTS被引量:2
2006年
Adsorption behaviors of phenol from aqueous solutions have been investigated in batch systems at 303 K and 318 K respectively, using hypercrosslinked polymeric adsorbent (CHA111), aminated hypercrosslinked polymeric adsorbents (NDA101, NDA103, NDA105) and weakly basic polymeric adsorbent (D301) with a view to studying the effect of hydrogen bonding and Van der Waals interactions between adsorbate and the adsorbent. All adsorption isotherms can be well fitted by Langmuir and Freundlich equations. Compared with D301 driven by hydrogen bonding interaction only and CHA111 driven by Van der Waals interaction only, phenol adsorption on aminated adsorbents driven by both hydrogen bonding and Van der Waals interactions were apparently different, i.e., negative effect for NDA105, positive effect for NDA101 and synergistic effect for NDA103. In this synergistic action, some weak interactions would contribute more or less to the adsorption than they work individually.
Wei-ming Zhang
关键词:PHENOL
ADSORPTION OF LATERALLY INTERACTING 1-NAPHTHOL/1-NAPHTHYL-AMINE MIXTURES ON NONPOLAR SURFACES FROM AQUEOUS SOLUTIONS被引量:1
2006年
The binary adsorption behavior of 1-naphthol/1-naphthylamine mixtures in water on nonpolar adsorbent Amberlite XAD4 was investigated at 293 K, 303 K and 313 K, respectively. The experimental uptakes of 1-naphthol and 1-naphthylamine in all binary-component systems of different molar ratios were obviously higher than the corresponding uptakes predicted by the extended Langmuir model, assuming no interaction between the adsorbed molecules of the two components. This phenomenon was attributed to the cooperative adsorption effect arising from the hydrogen bonding interaction between 1-naphthol and 1-naphthylamine molecules. A modified extended Langmuir model was proposed to describe the binary adsorption behavior by means of introducing a fitting parameter related with the cooperative adsorption effect of the adsorbates.
Wei-ming Zhang
关键词:1-NAPHTHOL1-NAPHTHYLAMINE
Evaluation of the correlation between ammonia nitrogen and p-toluidine using sequencing batch reactor treating synthetic p-toluidine wastewater被引量:2
2006年
This paper presents lab-scale experiment carried out to evaluate the correlation between ammonia nitrogen (NH3-N) and p-toluidine using sequencing batch reactor treating synthetic p-toluidine wastewater. The profiles of NH3-N and p-toluidine were traced under the concentration of sucrose in the influent varied from 0 to 500 mg/L, aerated airflow varied from 0.6 to 1.2 L/min and temperature varied from 10 to 25℃, respectively. The results showed that the concentration of NH3-N turned from increase to decrease when p-toluidine was nearly completely biodegraded, so the profile of NH3-N could clearly indicate the endpoint of p-toluidine biodegradation. And the profile of NH3-N was not influenced by the sucrose in the influent, aerated airflow and temperature. It is showed that using ammonia nitrogen as monitoring and control parameter is feasible and reliable and has promising application in amine wastewater treatment by SBR.
ZHANG Bo CHEN Jin-long WANG Fan ZHANG Wei-ming ZHANG Quan-xing
关键词:CORRELATIONP-TOLUIDINEBIODEGRADATION
大孔树脂白球固定化微生物强化处理对甲苯胺废水的研究被引量:3
2005年
采用大孔树脂白球固定化微生物强化SBR处理含对甲苯胺废水,与对照组相比,通过投加大孔树脂白球固定化微生物可以有效提高反应器的处理效率。在进水TOC为434.8 mg/L,对甲苯胺为326.9 mg/L的条件下,强化组可在180 min内将TOC和对甲苯胺基本去除完全,去除率在98%以上,对照组则需要300 min才能达到相同的去除效果。强化组对氨氮的去除同样具有较好的处理效果。
张波陈金龙张炜铭王璠鲁俊东张全兴
关键词:对甲苯胺固定化生物降解
ADSORPTION OF 1,2,4-ACID BY WEAKLY BASIC RESIN: ISOTHERMS, THERMODYNAMICS AND KINETICS被引量:1
2004年
The adsorption properties, including the adsorption isotherms, thermodynamics and kinetics, of 1-amino-2- naphthol-4-sulfonic acid (1,2,4-acid) onto weakly basic resin ND900 are investigated. Both the Langmuir and Freundlich equations can give a good fit to the adsorption isotherms, which indicates an endothermic and a favorable adsorption in our study range. A high yield in elimination of about 45.21 %-97.28% is obtained for the tested adsorption systems. The capacity and affinity of the adsorption increase with temperature, due to the phenomena of 'solvent-motivated' effects. The value of is 51.59 kJ/mol, which indicates a chemical adsorption and then expects the poor desorption property of ND900. The negative value of indicates the spontaneous nature of the adsorption process, and the positive value of shows the increased randomness at the solid/solution interface during the adsorption process. The value of the adsorption rate constant lower than 0.013 min-1 is indicative of a slow adsorption rate. The intra-particle diffusion must be one of the rate limiting steps.
刘福强
关键词:THERMODYNAMICSKINETICS
吸附法处理染料废水的工艺及其机理研究进展被引量:134
2004年
介绍了近年来国内外对含染料废水处理工艺研究的最新进展,重点报道了以活性炭、树脂、矿物、废弃物和一些新材料为吸附剂吸附处理染料废水的最新研究成果,同时对上述方法处理染料工业废水的机理进行了探讨,并展望了吸附法处理染料废水技术的发展前景。
陆朝阳沈莉莉张全兴
关键词:染料废水废水处理活性炭吸附法树脂吸附法处理工艺
煤气洗涤废水除酚脱氮技术研究被引量:1
2005年
本文采用吸附树脂NDA-99和脱氮剂DN-17分别去除煤气洗涤废水中的酚类物质和氨氮。结果表明,处理后的出水挥发酚质量浓度<5mg/L,去除率>98%,总酚质量浓度<70 mg/L,去除率>90%。氨氮质量浓度<15mg/L,去除率>98%,BOD5/COD为0.65。该处理工艺可回收粗酚和(NH4)2SO4,是一项具有环境效益和经济效益的技术。
陈连龙魏瑞霞陈一良陈金龙
关键词:煤气洗涤废水脱氮技术除酚BOD5DNNDA
甲萘酚和甲萘胺在超高交联吸附树脂上的协同吸附行为被引量:8
2006年
研究了水溶液中甲萘酚和甲萘胺在超高交联吸附树脂NDA103、NDA100上的协同吸附行为.实验结果表明,在较高平衡浓度范围内该吸附树脂对双组分水溶液中甲萘酚和甲萘胺双组分(摩尔比分别为3∶1、1∶1、1∶3)的吸附总量大于相同平衡浓度下对单组分水溶液中甲萘酚和甲萘胺的吸附量,呈现协同吸附现象,其主导机制是2种吸附质分子之间的氢键作用.单组分甲萘酚或甲萘胺水溶液和双组分共存水溶液中吸附质分子在吸附树脂上的吸附等温线均符合Langmuir模型.吸附温度由293K升至313K时,甲萘酚和甲萘胺在NDA103上的协同吸附效应的变化明显大于NDA100.NDA103树脂结构上的胺基既加强了对甲萘酚的吸附亲和力又增加了甲萘酚的协同吸附系数.
张炜铭陈金龙张全兴潘丙才鲁俊东
关键词:超高交联吸附树脂甲萘酚甲萘胺
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