Application of an easily water-compatible hypercrosslinked polymeric adsorbent for efficient removal of catechol and resorcinol in aqueous solution

Using gelatin as dispersant, liquid paraffin as porogen, novel hypercrosslinked polymeric adsorbents of LM-5 and LM-6 were prepared by post-crosslinking reaction with phenol and 2-naphthol, respectively. Bromoethane was used as crosslinking reagent to substitute poisonous organic compound of chloromethyl methylether. 2-Naphthol was used in the post-crosslinking reaction to enhance phenolic hydroxyl group content. The experiments of selective adsorbing aniline on resins in mixture solution, which consisting of benzene and aniline, show that the adsorption of aniline and benzene on LM-6 in aqueous solution are mainly pushed by physical interaction. The adsorption of aniline is also partly pushed by chemical interaction, and the adsorptive enthalpy illuminates that there exists hydrogen-bonding. Owning to the hydrogen-bond, the adsorption capacity of aniline on LM-6 is markedly higher than that of benzene.

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Study on Enhancement Adsorption of Pipemidic Acid from Aqueous Solution by Using an Amino Group Modified Hypercrosslinked Polymeric Adsorbents

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.468-471.1239 ◽

2012 ◽

Vol 468-471 ◽

pp. 1239-1242

Author(s):

Jiang Quan Ma ◽

Jun Hao Xia ◽

Qing Ling Lu ◽

Peng Xiang Shi ◽

Lu De Lu ◽

...

Keyword(s):

Aqueous Solution ◽

Entropy Change ◽

Amino Group ◽

Pipemidic Acid ◽

Adsorption Ability ◽

Freundlich Model ◽

Polymeric Adsorbent ◽

Hypercrosslinked Polymeric Adsorbent ◽

Ph Range ◽

Positive Effect

In the present study, an amino group modified hypercrosslinked polymeric adsorbent RDM-200 was prepared and its ability to adsorb pipemidic acid from aqueous solution was tested by using Amberlite XAD-4 as a comparison. Pipemidic acid adsorption isotherm onto RDM-200 is well described by the Freundlich model. The RDM-200 adsorption capacity for PPA was about 510.5 mg/g at 293 K, exhibited larger uptake and stronger affinity of pipemidic acid than XAD-4. The adsorption thermodynamic parameters were calculated and the adsorption was an exothermic, favorable, and more ordered process. The RDM-200 spontaneously adsorbs pipemidic acid mainly by both entropy change and enthalpy change. The RDM-200 exhibited excellent adsorption ability over the pH range 6-10, NaCl showed the positive effect.

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Treatment of phenol and p-cresol in aqueous solution by adsorption using a carbonylated hypercrosslinked polymeric adsorbent

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2009.02.141 ◽

2009 ◽

Vol 168 (2-3) ◽

pp. 1028-1034 ◽

Cited By ~ 38

Author(s):

Jianhan Huang

Keyword(s):

Aqueous Solution ◽

Polymeric Adsorbent ◽

Hypercrosslinked Polymeric Adsorbent

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Studying dispersed and rheological properties of hydrocarbon-containing acid emulsions and their efficiency in removing asphalt-resin-paraffin deposits

Oil and Gas Studies ◽

10.31660/0445-0108-2020-2-128-139 ◽

2020 ◽

pp. 128-139

Author(s):

M. Yu. Shumakher ◽

V. V. Konovalov ◽

A. P. Melnikov

Keyword(s):

Aqueous Solution ◽

Hydrochloric Acid ◽

Rheological Properties ◽

Reaction Rate ◽

Experimental Studies ◽

Efficient Removal ◽

Reservoir Properties ◽

Hydrocarbon Solvents ◽

Formation Zone ◽

Effect Of The Composition

Currently, the treatment of the bottomhole formation zone with acidic compositions is one of the most common methods to intensify the oil inflow. The use of various modified acid compositions increases the efficiency of acid treatments on the bottomhole formation zone. Acid compositions, including those containing hydrocarbon solvents, which contribute to more efficient removal of organic colmatants, affect the reaction rate of the reagent with the rock and processing equipment, change the reservoir properties, etc.The article presents the results of experimental studies, which are aimed at establishing the effect of the composition of hydrocarbon-containing acidic emulsions consisting of an aqueous solution of hydrochloric acid, toluene and Neonol AF 9-10 on their dispersed and rheological properties, as well as their efficiency in removing paraffin deposits.

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