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Aqueous scavenging of polycyclic aromatic hydrocarbons using epichlorohydrin, 1,6-hexamethylene diisocyanate and 4,4-methylene diphenyl diisocyanate modified starch: Pollution remediation approach
Okoli, Chukwunonso Peter1,2,3; Adewuyi, Gregory Olufemi2; Zhang, Qian1; Zhu, Guangxu1; Wang, Chungyu1; Guo, Qingjun1
2019-12-01
Source PublicationARABIAN JOURNAL OF CHEMISTRY
ISSN1878-5352
Volume12Issue:8Pages:2760-2773
Corresponding AuthorGuo, Qingjun(guoqj@igsnrr.ac.cn)
AbstractCross linking of starch molecules with suitable reagents provides opportunity for incorporation of relevant functional groups, thereby tuning the adsorption properties of the starch polymer adsorbent towards target pollutants, as a function of the nature of the cross linking agent and the chemical identity of the pollutants. In this vein, this study assessed the applicability of epichlorohydrin cross-linked starch (EPIS), 1,6-hexamethylene diisocyanate cross-linked starch (HDIS), and 4,4-methylene diphenyl diisocyanate cross-linked starch (MDIS) polymer adsorbents for treatment of aqueous Polycyclic Aromatic Hydrocarbon (PAHs) pollution in environmental water samples. Cross-linking process led to improvement in surface characteristics, level of hydrophobicity, and incorporation of relevant functional groups. Adsorption capacities of the adsorbents were in the order of MDIS > HDIS > EPIS. PAHs molecules were adsorbed in multi-layer, in a flat-wise orientation, while external and internal diffusion dominated the adsorption kinetics. Adsorption mechanisms suggested that these adsorbents spontaneously adsorb PAHs molecules driven mainly by enthalpy change, and the adsorption process was attributed to physisorption involving hydrophobic, van der Waals and pi-pi interactions between adsorbent and adsorbates. The thermodynamic evaluation indicated that the adsorption process was majorly endothermic and spontaneous. Desorption studies indicated that the adsorbents can be efficiently regenerated. The adsorbents were effective in treating simulated and real environmental water samples, and hence, are promising cost-effective alternative for control of aqueous PAHs pollution. (C) 2015 The Authors. Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
KeywordPolycyclic Aromatic Hydrocarbons (PAHs) Cross-linked starch polymer Adsorption mechanism Adsorbent regeneration Water remediation
DOI10.1016/j.arabjc.2015.06.004
WOS KeywordPHENANTHRENE SORPTION ; ORGANIC POLLUTANTS ; RISK-ASSESSMENT ; YELLOW-RIVER ; REMOVAL ; CARBON ; CYCLODEXTRIN ; ADSORPTION ; WATER ; BIOSORPTION
Indexed BySCI
Language英语
Funding ProjectThe World Academy of Sciences (TWAS)[3240240233] ; Chinese Academy of Sciences (CAS)[3240240233] ; One Hundred Talents Program of the Chinese Academy of Sciences, 863 Program[2013AA06A211-2]
Funding OrganizationThe World Academy of Sciences (TWAS) ; Chinese Academy of Sciences (CAS) ; One Hundred Talents Program of the Chinese Academy of Sciences, 863 Program
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000504900300103
PublisherELSEVIER
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/131145
Collection中国科学院地理科学与资源研究所
Corresponding AuthorGuo, Qingjun
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Ctr Environm Remediat, Beijing, Peoples R China
2.Univ Ibadan, Dept Chem, Analyt Environm Chem Unit, Ibadan, Nigeria
3.Western Delta Univ, Ind Chem Dept, Oghara, Delta State, Nigeria
Recommended Citation
GB/T 7714
Okoli, Chukwunonso Peter,Adewuyi, Gregory Olufemi,Zhang, Qian,et al. Aqueous scavenging of polycyclic aromatic hydrocarbons using epichlorohydrin, 1,6-hexamethylene diisocyanate and 4,4-methylene diphenyl diisocyanate modified starch: Pollution remediation approach[J]. ARABIAN JOURNAL OF CHEMISTRY,2019,12(8):2760-2773.
APA Okoli, Chukwunonso Peter,Adewuyi, Gregory Olufemi,Zhang, Qian,Zhu, Guangxu,Wang, Chungyu,&Guo, Qingjun.(2019).Aqueous scavenging of polycyclic aromatic hydrocarbons using epichlorohydrin, 1,6-hexamethylene diisocyanate and 4,4-methylene diphenyl diisocyanate modified starch: Pollution remediation approach.ARABIAN JOURNAL OF CHEMISTRY,12(8),2760-2773.
MLA Okoli, Chukwunonso Peter,et al."Aqueous scavenging of polycyclic aromatic hydrocarbons using epichlorohydrin, 1,6-hexamethylene diisocyanate and 4,4-methylene diphenyl diisocyanate modified starch: Pollution remediation approach".ARABIAN JOURNAL OF CHEMISTRY 12.8(2019):2760-2773.
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