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STUDY ON THE TREATMENT OF 3—PHENOXY—BENZALDEHYDE INDUSTRIAL WASTEWATER WITH polymeric adsorbent

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Chinese Journal of Reactive Polymers 1998年第2期7卷 22-31页

作者： ZhuShiyun ChenJinlong Lu Xiaoxiang Zhang Quanxing Wang Liansheng The State Key Laboratory of Pollution Control and Resource Reuse Department of Environmental Science and EngineeringNanjing UniversityNanjing210093P.R.China

In this paper the two effluents from PBA (3- phenoxy -benzaldehyde) productionprocess were treated by polymeric adsorbent CHA-lll. PBA or PBC(3-phenoxybenzoic acid) was recovered from the wastewater in the process of neutralization. As asecondary treatment method, adsorption with CHA-lll showed better efficency thanPhotocatalytic decomposition and solvent extraction. The optimal technologicalparameters were: adsorption: current velocity: 2.0 BV/hr(bed volume per hour), roomtemperature, desorption: current velocity:10 BV/hr 80℃8% sodium hydroxideaqueous solutions. In conclusion, 90.9% COD in the neutralizing wastewater and98. 4% COD in the hydrolysis wastewater are removed successfully.

关键词： wastewater treatment polymeric adsorbent 3-phenoxy benzaldehyde

ADSORPTION OF 4-METHYLANILINE IN AQUEOUS SOLUTION BY BENZOYLCONTAINING polymeric adsorbentS

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Chinese Journal of Polymer Science 2005年第3期23卷 255-259页

作者： Gen-chengZhang Hai-suoWu 费正皓 InstituteofAppliedChemistry＆EnvironmentalEngineering DepartmentofChemistryYanchengTeachersCollegeJiangsu224002China InstituteofEnvironmentalScience KeyLaboratoryofEnvironmentalEngineeringofJiangsuProvinceJiangsu210036China

New polymeric adsorbents(ZH-02,ZH-03)containing benzoyl group for adsorbing and removing 4-methylanilinefrom its aqueous solutions were *** on the isotherms and the comparison of desorption conditions evidencedthrough the adsorption of 4-methylaniline in water onto ZH-02 and ZH-03,namely that there are chemisorption's transitionsat a proper higher ***-column adsorption studies of 4-methylaniline on XAD-4,ZH-02 and ZH-03 at 288 Kshow that the breakthrough capacities are 2.39,2.99 and 3.19 mmol/g and the total capacities are 3.45,3.92 and4.35 mmol/g,respectively.

关键词： polymeric adsorbent 4-Methylaniline Adsorption Chemisorption.

EFFECT OF WEAK INTERACTIONS ON PHENOL ADSORPTION FROM AQUEOUS SOLUTIONS BY AMINATED polymeric adsorbentS

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Chinese Journal of Polymer Science 2006年第1期24卷 61-66页

作者： Wei-ming Zhang Jin-long Chen Ai-min Li Bing-cai Pan Qun Chen Ming-yang He and Quan-xing Zhang a State Key Laboratory of Pollution Control and Resources Reuse,School of the Environment,Nanjing University,Nanjing 210093,China b Research Center for Engineering Technology of Organic Poison Control and Resources Reuse in Jiangsu Province,Nanjing 210038,China c Department of Chemical Engineering,Jiangsu Polytechnic University,Changzhou 213016,China State Key Laboratory of Pollution Control and Resources Reuse School of the Environment Nanjing University Nanjing 210093 China Research Center for Engineering Technology of Organic Poison Control and Resources Reuse in Jiangsu Province Nanjing 210038 China Department of Chemical Engineering Jiangsu Polytechnic University Changzhou 213016 China

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.

关键词： polymeric adsorbent Phenol Adsorption behaviours Negative effect Positive effect Synergistic effect.

SYNERGISTIC INTERACTIONS ON PHENOL ADSORPTION FROM AQUEOUS SOLUTIONS BY polymeric adsorbentS

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Chinese Journal of Polymer Science 2005年第4期23卷 441-447页

作者：陈金龙 StateKeyLaboratoryofPollutionControlandResourcesReuse SchooloftheEnvironmentNanjingUniversityNanjing210093China

In this paper,the adsorption behaviors of phenol on polymeric adsorbents(Amberlite XAD4,NDA101,and D301) were investigated in batch system at 293,303,and 313 K,*** the results shown,the adsorption isotherms of phenol on all adsorbents can be well fitted by Langmuir and Freundlich equations,which indicate a favorable and exothermic *** adsorption capacity on a newly developed aminated adsorbent,NDA101,on which adsorption could be achieved by both hydrogen bonding interaction and π-π interaction,are higher than that on a weak base adsorbent,D301,on which adsorption could be achieved by hydrogen bonding interaction only,and on a nonpolar adsorbent,XAD4,on which adsorption could be achieved by π-π interaction *** results of this paper indicate that the synergistic effect of some weak interactions,which occur simultaneously would contribute more to the adsorption than that occur individually.

关键词： polymeric adsorbent Phenol Adsorption behaviours Synergistic interaction

Estimation of the Isotherms of Phenol on Activated Carbons and polymeric adsorbents under Supercritical Condition

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Chinese Journal of Chemical Engineering 2003年第3期11卷 253-256页

作者：奚红霞谢兰英李祥斌李忠 Research Institute of Chemical Engineering South China University of TechnologyGuangzhou 510640China

A method named as 'volume-expanding and pressure-reducing adsorption' is proposed. It can be used to measure the isotherms under supercritical condition. The adsorption isotherms of phenol on activated carbons and polymeric adsorbents are estimated and compared respectively for the systems of 'phenol-activated carbon-supercritical fluid CO2' and 'phenol-polymeric adsorbent-supercritical fluid CO2'. The results show that the amount of phenol adsorbed on the activated carbons and the polymeric adsorbents under the supercritical condition is much less than that under the general condition, which can be utilized to develop a technology regenerating the activated carbon with supercritical fluid. Moreover, the effects of ethyl alcohol, used as the third component, on the isotherms of phenol on the activated carbons and polymeric adsorbents under the supercritical condition are also investigated.

关键词： volume-expanding and pressure-reducing adsorption adsorption isotherm activated carbon polymeric adsorbent supercritical fluid

STUDY ON THE TREATMENT OF INDUSTRIAL WASTEWATER CONTAINING TRIETHYLAMINE WITH polymeric adsorbentS

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Chinese Journal of Reactive Polymers 2000年第2期9卷 174-180页

作者： LV Lu PAN Bingcai ZHANG Weiming CHEN Jinlong ZHANG Quanxing The State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210093P.R.China

The treatment of the industrial wastewater, in which the concentration of triethylamine (TEN) and CODcr was around 3450 mg/L and 22400 mg/L respectively, was studied by adsorption of macroporous resins. Results demonstrate that the polymeric adsorbent CHA-111 has excellent effect on the adsorption and desorption of TEN. The concentration of TEN in the effluent is less than 30mg/L, and the removal efficiency of TEN and total CODcr exceed 99% and 95% respectively. The accumulation and resource reuse of TEN can be realized in this process.

关键词： Adsorption polymeric adsorbent Triethylamine Wastewater treatment

ADSORPTION OF DINITROPHENOLS ONTO polymeric adsorbentS AND ITS MECHANISM

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Chinese Journal of Reactive Polymers 2000年第1期9卷 34-41页

作者： SHI Zuoqing XU Mancai LIN Xue XU Mingcheng FAN Yunge SHIRongfu YANG Yizhong HE Binglin The State Key Lab.of Functional polymeric Materials for Adsorption and Separation Institute of Polymer Chemistry Nankai UniversityTianjin 300071 Department of Chemistry Hunan Normal UniversityChangsha410081

The adsorption of 2,4-dinitrophenol and 2.6-dinitrophenol on non-polar and polar adsorbents was studied. The results showed that the equilibrium adsorption did not comply with the Langmuir equation and was not mono-layer absorption. It is of interest to notice that the effect of pH on the adsorption of 2.4-or 2,6-dinitrophenol onto ADS-7 and ADS-21 was very small. The result is explained by hydrogen bonding interaction between 2, 4- or 2. 6-dinitrophenol and the adsorbent ADS21. The large adsorption capacity of dinitrophenol onto ADS-21, which was about 500 mg/g at an equilibrium concentration of 400 mg/L. and the small dinitrophenol leakage in the effluent from ADS- 21 column presented a good prospect for treatment of wastewater containing dinitrophenol with absorbent ADS-21.

关键词： Dinitrophenols Adsorption polymeric adsorbent Mechanism

A WATER-COMPATIBLE PHENOLIC HYDROXYL MODIFIED POLYSTYRENE AS AN adsorbent FOR ADSORBING PHENOLIC COMPOUNDS FROM AQUEOUS SOLUTIONS

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Chinese Journal of Reactive Polymers 2001年第2期10卷 141-153页

作者： LI Aimin Zhang Quanxing Liu Fuqiang Fei Zhenghao Zhang Gencheng Chen Jinlong State Key Laboratory of Pollution Control and Resources Reuse School of the Environment Nanjing UniversityNanjing 210093P.R.China Institute of Applied Chemistry&Environmental Engineering Department of ChemistryYancheng Teachers CollegeYancheng 224002JiangsuP.R.China

A water-compatible phenolic hydroxyl modified polystyrene adsorbent (AM-1) for adsorbing and removing phenolic compounds from aqueous solutions was prepared by covalent bonding of phenolic hydroxyl groups to the surface of porous polystyrene-divinylbenzene beads, this resin can be used directly without wetting process. A comparison of the sorption properties of the new resin and Amberlite XAD-4 toward four phenolic compounds, phenol, p-cresol, p-chlorophenol, and p-nitrophenol was made. The capacities of equilibrium adsorption of AM-1 for all four phenolic compounds increased around 20% over that of Amberlite XAD-4, which may be contributed to phenol hydroxyl group on the surface and the unusual pore distribution. At their dilute solution, the equilibrium adsorption capacities of AM-1 for phenol increased about 62% over that of Amberlite XAD-4, while equilibrium adsorption capacities of the other three phenolic compounds increased 4-35%, suggesting an advantage of AM-1 over Amberlite XAD-4 in the collection of phenol. Freundlich isotherm equations and isosteric adsorption enthalpies for the four phenolic compounds indicate a physical adsorption process on the Amberlite XAD-4 and AM-1 resins. Column studies for phenol show that AM-1 resin has excellent adsorption and desorption performance.

关键词： polymeric adsorbent Phenolic compound Adsorption Synthesis Adsorption enthalpy.

TREATMENT AND RESOURSE REUSE OF INDUSTRIAL WASTEWATER FROM PRODUCTION PROCESS OF PHENYL ACETIC ACID

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Chinese Journal of Reactive Polymers 1999年第1期8卷 82-89页

作者： PAN Bingcai CHEN Jinlong ZHANG Quanxing WANG Yong State Key Laboratory of Pollution Control & Resource Reuse Department of EnvironmentalScience & Engineering Nanjing University Nanjing 210093 P R. China

The effluent from phenyl acetic acid (PhCH2COOH) production process can betreated with NDA-999 macroporous polymeric adsorbent with about 100% removalefficiency of PhCH2COOK benzyl alcohol (PhCH2OH)and benzaldehyde (PhCHO) aswell as the decrease in Total Organic Carbon (TOC)from 4691mg/l to adsorbent can be reused after being regenerated by NaOH aqueous solution andmethanol. Good economic, social and environmental results can be achieved with thismethod.

关键词： phenyl acetic acid polymeric adsorbent adsorption wastewater treatment