Volume 140, Issue 6 e53433
RESEARCH ARTICLE

Waste organic acid treatment with polyethyleneimine grafted polystyrene resin

Qi Meng

Qi Meng

Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China

Contribution: Conceptualization (lead), Funding acquisition (supporting), ​Investigation (equal), Project administration (equal), Writing - original draft (equal)

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Yiwen Cao

Yiwen Cao

Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China

Contribution: ​Investigation (equal), Methodology (equal), Writing - original draft (equal)

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Shufeng Ma

Shufeng Ma

Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China

Contribution: ​Investigation (equal)

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Meiling Wang

Meiling Wang

Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China

Contribution: Software (supporting), Validation (supporting)

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Hao Niu

Hao Niu

Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China

Contribution: Software (supporting), Validation (supporting)

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Weihua Jiang

Weihua Jiang

Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China

Contribution: Resources (equal)

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Qiaoqiao Teng

Corresponding Author

Qiaoqiao Teng

Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China

Correspondence

Qiaoqiao Teng, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China.

Email: [email protected]

Ninghong Jia, State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration & Development, Beijing, 100083, China.

Email: [email protected]

Contribution: Conceptualization (equal), Funding acquisition (lead), Project administration (lead), Supervision (lead)

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Ninghong Jia

Corresponding Author

Ninghong Jia

State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration & Development, Beijing, China

Correspondence

Qiaoqiao Teng, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China.

Email: [email protected]

Ninghong Jia, State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration & Development, Beijing, 100083, China.

Email: [email protected]

Contribution: Resources (lead), Supervision (equal)

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First published: 25 November 2022

Funding information: CNPC Innovation Found, Grant/Award Number: 2021DQ02-1104; Graduate Research and Innovation Projects of Jiangsu Province, Grant/Award Number: SJCX21_1218; Jiangsu Key Laboratory of Fine Petrochemical Engineering, Grant/Award Number: KF2005; National Natural Science Foundation of China, Grant/Award Number: 22001022

Abstract

Organic acid is a kind of important fine chemicals with wide application, while impropriate discharges would cause serious damage to environment. In this report, two polyethyleneimine (PEI-600, 1800) functionalized polystyrene (PS) resins were facilely prepared to remediate common organic acids. The heavier PEI-1800 resulted in surprisingly lower nitrogen loading of PSPEI under optimal conditions due to more significant extra grafting. Therefore, PSPEI-600 was used to adsorb two groups (aliphatic and aromatic) of eight common organic acids, and showed highest adsorptive capacities toward salicylic acid (SA) and trifluoroacetic acid (TFA). The adsorption of TFA was faster and was mainly due to strong acid–base interactions by forming ammonium carboxylate. SA possessed lower acidity, but its additional π-π stacking and hydrogen bonding interactions with the PSPEI resin led to a slower but overall higher uptake. Kinetic studies indicated that both acid adsorptions conformed to pseudo-second-order kinetics, and the adsorption rate was controlled by intraparticle diffusion. The adsorptions followed Langmuir isotherms and were identified as a spontaneous endothermic process.

CONFLICT OF INTEREST

We declare that we do not have any commercial or associative interest that represents a conflict of interest in connection with the work submitted.

DATA AVAILABILITY STATEMENT

The data sets generated during the current study are available in the supporting information.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.