|
1
|
Irfan J, Ali A, Hussain MA, Abbas A, Haseeb MT, Naeem-Ul-Hassan M, Azhar I, Hussain SZ, Hussain I. Chemical modification of Aloe vera leaf hydrogel for efficient cadmium-removal from spiked high-hardness groundwater. Int J Biol Macromol 2024; 259:128879. [PMID: 38145696 DOI: 10.1016/j.ijbiomac.2023.128879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/13/2023] [Accepted: 12/16/2023] [Indexed: 12/27/2023]
Abstract
Herein, the hydrogel from the leaf of the Aloe vera plant (ALH) was succinylated (SALH) and saponified (NaSALH). The FTIR, solid-state CP/MAS 13C NMR, and SEM-EDX spectroscopic analyses witnessed the formation of SALH and NaSALH from ALH. The pHZPC for NaSALH was found to be 4.90, indicating the presence of -ve charge on its surface. The Cd2+ sorption efficiency of NaSALH was found to be dependent on pH, NaALH dose, Cd2+ concentration, contact time, and temperature. The maximum Cd2+ removal from DW and HGW was found to be 227.27 and 212.77 mg g-1 according to the Langmuir isothermal model (>0.99) at pH of 6, NaSALH dose of 40 mg g-1, Cd2+ concentration of 90 mg L-1, contact time of 30 min, and temperature of 298 K. The kinetic analysis of Cd2+ sorption data witnessed that the Cd2+ removal by chemisorption mechanism and followed pseudo-second-order kinetics (>0.99). The -ve values of ΔG° and ΔH° assessed the spontaneous and exothermic nature of sorption of Cd2+ by NaSALH. The regeneration and sorption/desorption studies indicated that the sorbent NaSALH is regenerable.
Collapse
Affiliation(s)
- Jaffar Irfan
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | - Arshad Ali
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | - Muhammad Ajaz Hussain
- Centre for Organic Chemistry, School of Chemistry, University of the Punjab, Lahore 54590, Pakistan.
| | - Azhar Abbas
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
| | | | | | - Irfan Azhar
- Department of Chemistry, College of Science, Southern University of Science and Technology, Shenzhen 518055, China
| | - Syed Zajif Hussain
- Department of Chemistry, SBA School of Science & Engineering, Lahore University of Management Sciences, Lahore Cantt. 54792, Pakistan
| | - Irshad Hussain
- Department of Chemistry, SBA School of Science & Engineering, Lahore University of Management Sciences, Lahore Cantt. 54792, Pakistan
| |
Collapse
|
|
5
|
Liu S, Gao J, Zhang L, Yang Y, Liu X. Diethylenetriaminepentaacetic acid-thiourea-modified magnetic chitosan for adsorption of hexavalent chromium from aqueous solutions. Carbohydr Polym 2021; 274:118555. [PMID: 34702488 DOI: 10.1016/j.carbpol.2021.118555] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 07/20/2021] [Accepted: 08/10/2021] [Indexed: 10/20/2022]
Abstract
Chromium pollution is a serious environmental problem given that like most heavy metals, Cr tends to persist and accumulate in the environment. In this study, diethylenetriaminepentaacetic acid-thiourea-modified magnetic chitosan (DTCS-Fe3O4) was synthesized for use as an adsorbent for Cr(VI) removal from aqueous solutions. The effects of various treatment conditions on the Cr(VI) adsorption performance of DTCS-Fe3O4 composite as well as the kinetics were elucidated. Moreover, by observing the structure and morphology of DTCS-Fe3O4, the possible Cr(VI) adsorption mechanism was proposed. DTCS-Fe3O4 exhibited a maximum adsorption capacity of 321.3 ± 6.0 mg g-1. Further, the adsorption process, which followed the Langmuir model for monolayer adsorption, was predominantly governed by chemical adsorption, and could be fitted using the pseudo-second-order kinetics model. Furthermore, given its ease of preparation, low cost, and remarkable performance, it is expected that the DTCS-Fe3O4 composite would find wide practical application in the removal of toxic Cr(VI) from wastewater.
Collapse
Affiliation(s)
- Shejiang Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China
| | - Jing Gao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China
| | - Li Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China
| | - Yongkui Yang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China.
| | - Xiuli Liu
- Tianjin Huanke Environmental Consulting Co., Ltd., Tianjin 300191, PR China
| |
Collapse
|
|
8
|
Tiwari S, Patil R, Dubey SK, Bahadur P. Derivatization approaches and applications of pullulan. Adv Colloid Interface Sci 2019; 269:296-308. [PMID: 31128461 DOI: 10.1016/j.cis.2019.04.014] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 04/30/2019] [Accepted: 04/30/2019] [Indexed: 12/18/2022]
Abstract
Pullulan (PUL), a linear exo-polysaccharide, is useful in industries as diverse as food, cosmetics and pharmaceuticals. PUL presents many favorable characteristics, such as renewable origin, biocompatibility, stability, hydrophilic nature, and availability of reactive sites for chemical modification. With an inherent affinity to asialoglycoprotein receptors, PUL can be used for targeted drug delivery to the liver. Besides, these primary properties have been combined with modern synthetic approaches for developing multifunctional biomaterials. This is evident from numerous studies on approaches, such as hydrophobic modification, cross-linking, grafting and transformation as a polyelectrolyte. In this review, we have discussed up-to-date advances on chemical modifications and emerging applications of PUL in targeted theranostics and tissue engineering. Besides, we offer an overview of its applications in food, cosmetics and environment remediation.
Collapse
|
|
10
|
Dai Y, Sun Q, Wang W, Lu L, Liu M, Li J, Yang S, Sun Y, Zhang K, Xu J, Zheng W, Hu Z, Yang Y, Gao Y, Chen Y, Zhang X, Gao F, Zhang Y. Utilizations of agricultural waste as adsorbent for the removal of contaminants: A review. CHEMOSPHERE 2018; 211:235-253. [PMID: 30077103 DOI: 10.1016/j.chemosphere.2018.06.179] [Citation(s) in RCA: 139] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 06/28/2018] [Accepted: 06/29/2018] [Indexed: 05/10/2023]
Abstract
In recent years, various industrial activities have caused serious pollution to the environment. Due to the low operating costs and high flexibility, adsorption is considered as one of the most effective technologies for pollutant management. Agricultural waste has loose and porous structures, and contains functional groups such as the carboxyl group and hydroxyl group, so it can be invoked as biological adsorption material. Agricultural waste gets the advantages of a wide range of sources, low cost, and renewable. It has a good prospect for the comprehensive utilization of resources when used for environmental pollution control. This article summarized the current research status of agricultural waste in adsorbing pollutants, which pointed out the influencing factors of adsorption, expounded the adsorption mechanism of biological adsorption and introduced the related parameters of adsorption, proposed the application of adsorbents in engineering including adsorption in liquid and gas phases, at the same time it gave the future development prospect of agricultural waste as adsorbent.
Collapse
Affiliation(s)
- Yingjie Dai
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Qiya Sun
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Wensi Wang
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Lu Lu
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Mei Liu
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Jingjing Li
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Shengshu Yang
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Yue Sun
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Kexin Zhang
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Jiayi Xu
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Wenlei Zheng
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Zhaoyue Hu
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Yahan Yang
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Yuewen Gao
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Yanjun Chen
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Xu Zhang
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Feng Gao
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China
| | - Ying Zhang
- Laboratory of Environmental Remediation, College of Resources and Environment, Northeast Agricultural University, No.600 Changjiang Road, Xiangfang District, Harbin 150030, China.
| |
Collapse
|