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In Situ Liquid-Phase-Adsorption Measurement System Based on Fiber-Optic Sensing with the Aid of Membranes
Gao, F (Gao, Fei)[ 1 ]; Muhammad, T (Muhammad, Turghun)[ 1 ]; Bakri, M (Bakri, Mahinur)[ 2 ]; Pataer, P (Pataer, Parezhati)[ 1 ]; Chen, LX (Chen, Lingxin)[ 3 ]
2018
Source PublicationACS OMEGA
ISSN2470-1343
Volume3Issue:9Pages:10891-10897
Abstract

At present, liquid phase adsorption (LPA) is still being quantitatively characterized in the way of manual sampling and off-line determination because of the complexity of the system comparing to gas adsorption. This paper describes a novel method for in situ, real-time measurement of LPA in general based on fiber-optic sensing (FOS) with the aid of membranes for the first time. A self-made measurement vessel was assembled from an adsorption bag, thermostatic devices with a stirrer, and a fiber-optic dipping probe. Also, macroporous adsorption resins (MARs) and rutin were chosen as model adsorbent and adsorbate to establish the FOS system. Here, in situ light absorption measurement was achieved by eliminating interference of adsorbent particles via encapsulating them with a membrane into the adsorption bag. In situ LPA measurement of rutin solution on MARs was obtained by detecting light absorption at 353 nm using dipping probe, in the broad concentration range from 0.3 to 60 mg/L with excellent linearity (R-2 = 0.9996). In situ measurements of adsorption and desorption kinetics on five kinds of MARs with different polarities were systematically carried out, showing that the adsorption process obeyed the pseudo-second-model. As well as, the system was proved to be highly accurate and reproducible. More importantly, this method enabled to study the initial stage of the adsorption process, starting from the time of the first second, which is the most important part in the adsorption kinetics, and this is impossible for traditional sampling methods. The successful application of FOS to in situ measurement of LPA not only contributes to fast, automatic, and real-time monitoring of LPA process but also enriches the research connotation of adsorption.

DOI10.1021/acsomega.8b01059
Indexed BySCI
CSCD IDCSCD:000446186000048
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/5596
Collection省部共建新疆特有药用资源利用重点实验室
Affiliation1.Xinjiang Univ, Coll Chem & Chem Engn, Minist Educ & Xinjiang Uygur Autonomous Reg, Key Lab Oil & Gas Fine Chem, Urumqi 830046, Peoples R China
2.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Plant Resources & Chem Arid Zone, Urumqi 8300, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
Recommended Citation
GB/T 7714
Gao, F ,Muhammad, T ,Bakri, M ,et al. In Situ Liquid-Phase-Adsorption Measurement System Based on Fiber-Optic Sensing with the Aid of Membranes[J]. ACS OMEGA,2018,3(9):10891-10897.
APA Gao, F ,Muhammad, T ,Bakri, M ,Pataer, P ,&Chen, LX .(2018).In Situ Liquid-Phase-Adsorption Measurement System Based on Fiber-Optic Sensing with the Aid of Membranes.ACS OMEGA,3(9),10891-10897.
MLA Gao, F ,et al."In Situ Liquid-Phase-Adsorption Measurement System Based on Fiber-Optic Sensing with the Aid of Membranes".ACS OMEGA 3.9(2018):10891-10897.
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