CHEMICAL ENGINEERING RESEARCH & DESIGN
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2017
·
IF 2.538
Shuangzhen Guo,Pengpeng Jiao,Zhigang Dan,Ning Duan,Jian Zhang,Guanyi Chen,Wubin Gao
A novel l -arginine modified magnetic bioadsorbent (Fe 3 O 4 -CS-L) was fabricated to remove Zn(II), Cd(II) and Pb(II) from aqueous solution by adsorption method. Several techniques such as FT-IR, SEM, XRD, TGA and VSM were used for characterizing the Fe 3 O 4 -CS-L. The results showed that the Fe 3 O 4 -CS-L was successfully prepared. Batch experiments were conducted to investigate the parameters affecting the adsorption of the novel magnetic bioadsorbent to metal irons, such as adsorption isotherm and adsorption kinetics. The adsorption equilibrium was commendably described by pseudo-second-order model. Langmuir model was better than Freundlich model to describe adsorption isotherm data and the predicted maximum adsorption capacities of Zn(II), Cd(II) and Pb(II) were 256.41 mg/g, 156.99 mg/g and 128.63 mg/g, respectively. Competition adsorption results showed that the adsorption order of Fe 3 O 4 -CS-L to metal ions was Pb(II) > Zn(II) > Cd(II). Moreover, regeneration studies suggested that Fe 3 O 4 -CS-L has a good recyclability. All the results showed that Fe 3 O 4 -CS-L could be a promising material in environment pollution cleanup.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2018
·
IF 1.666
Shanshan Liu,Heyi Ge,Shilin Cheng,Yu Zou
In this work, a novel bio-adsorbent with a unique structure was prepared through one-step crosslinking in the emulsion using corn straw core (CSC), CoFe2O4 and chitosan (CS) as raw materials for adsorption of methylene blue (MB). The preparation method of the adsorbent was simple and environmentally friendly. In the adsorbent, the agricultural waste of CSC acted as scaffold and was wrapped with CS. CoFe2O4 was embedded in CS, giving magnetic property to the adsorbent, which was beneficial to the separation process. XRD, FTIR, SEM and TEM were utilized to characterize the adsorbent and the factors affecting adsorption removal efficiency were explored. The pseudo-second-order model and the Langmuir model described the adsorption behaviour well. The equilibrium adsorption capacity was 122 mg g−1 for MB at 298 K. The thermodynamic studies suggested that the adsorption was a spontaneous, exothermic and randomness decrease process. MB loaded on the adsorbent could be desorbed by immersing in dilute acid solution, indicating that this kind of biomass adsorbent can be widely used in the field of adsorption.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2018
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IF 6.434
Ruiyi Fan,Huiyu Min,Xingxing Hong,Qingping Yi,Wei Liu,Qinglin Zhang,Zhengrong Luo
In this paper, a new core-shell nanostructured magnetic bio-based composite was prepared by immobilizing persimmon tannin (PT) onto Fe 3 O 4 @SiO 2 microspheres, and the as designed Fe 3 O 4 @SiO 2 @PT was utilized for adsorptive recovery of Au(III) and Pd(II). The preparation, morphology, composition and magnetic property of Fe 3 O 4 @SiO 2 @PT were characterized. Adsorption parameters of Fe 3 O 4 @SiO 2 @PT towards Au(III) and Pd(II) including initial pH, reaction time, initial concentration of metal ions , effect of acidity and interference of coexisting metal ions were investigated. It is sufficiently confirmed that silica was coated on Fe 3 O 4 and persimmon tannin was immobilized on aminated Fe 3 O 4 @SiO 2 . The thickness of silica and loaded persimmon tannin are around 18 nm and 14 nm, respectively. With only 1.00 wt% of persimmon tannin, however, the maximum adsorption capacities of Fe 3 O 4 @SiO 2 @PT for Au(III) and Pd(II) were as high as 917.43 and 196.46 mg·g −1 , respectively. In addition, after adsorption of Au(III) and Pd(II), the magnetization saturation values ( Ms ) of Fe 3 O 4 @SiO 2 @PT were high enough to guarantee efficient magnetic seperation. Metallic gold could be facilely recovered from wastewaters containing Au(III).
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 41
·25258-25265
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IF 3.361
Long Liu,Sheng Chang,Yan Wang,Hexiang Zhao,Shuteng Wang,Chengfeng Zheng,Yingying Ding,Shixue Ren,Jiguo Zhang,Yuan-Ru Guo
An Fe3O4/carboxymethyl cellulose (Fe3O4/CMC) magnetic biosorbent was prepared using the ion-imprinting technology, where La(III) was used as the template ion. The morphology and structure of Fe3O4/CMC were characterized by SEM, FTIR and XRD. It is found that nano Fe3O4 with inverse spinel structure can distribute in CMC and endow the composite with good magnetic properties. The adsorption performance such as adsorption capacity, influence of pH and initial concentration were fully explored. The prepared Fe3O4/CMC is revealed to have good adsorption properties with Qmax of 61.5 mg g−1, in line with the pseudo-second-order kinetic model. When handling the multi-ion coexistence solution of Cu(II), Ni(II) and Cd(II), Fe3O4/CMC shows high selective adsorption for La(III). Meanwhile, cycling experiments find that the adsorption capacity is only slightly reduced (less than 5%) after 5-time reuse. Good adsorption properties, high selectivity and easy recovery give the newly-synthesized Fe3O4/CMC biosorbent broad application potential in the treatment of La(III)-containing wastewater.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2021
·
IF 5.645
Liping Tan,Yongchao Zhang,Weihua Zhang,Rongwen Zhao,Yue Ru,Tongjun Liu
Valorization of lignin is imperative since lignin is still an underutilized biomaterial. Herein, a facile fabrication method for lignin-based magnetic biosorbent (LMB) is proposed via assembling magnetic inorganic particles (Fe 3 O 4 ) on lignin in-situ for eliminating heavy metal ions (HMIs) from wastewater without the utilization of organic solvents. Chemical and structural characterizations, which were determined by different analytical tools, including Fourier transform infrared (FTIR), Scanning electron microscope (SEM), X-ray diffraction (XRD), High-resolution transmission electron microscopy (HRTEM), and X-ray photoelectron spectroscopy (XPS) confirmed that LMB was successfully formed via the feasible and green process. Then, LMB was found to exhibit highly effective removal performance for HMIs. The adsorption capacity of the LMB reached 152.58 mg/g for Pb 2+ and 46.81 mg/g for Cu 2+ , with equilibrium attained within 30 min. Adsorption kinetics and isothermal adsorption of lead and copper ions by LMB were also examined. This study delivers a new perspective on lignin valorization for lignocellulose biorefineries and establishes a path for synthesizing a cost-efficient and green adsorbent for removing HMIs from wastewater.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
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2023
·
IF 7
Fan Zhou,Lin Gao,Shunyan Cui,Jing Tian,Tong Wang,Guiyin Li,Zhongmin Wang,Chaoke Qin,Dahong Lin,Weijiang Gan,Zhaojin Ran
Cadmium (Cd (II)) pollution in water and soil is a global problem that poses a serious threat to both human health and the ecological balance of the environment. Therefore, the development of efficient and environmentally friendly bio-adsorbent materials is the key to remediating Cd (II) pollution. Herein, a magnetic persimmon tannins composites bio-adsorbent (Fe 3 O 4 /PT, MPT) which is decorated with iron oxide has been successfully prepared by the crosslinking method for investigating its adsorption potential and mechanisms of Cd (II) in aqueous solution. The maximum Cd (II) adsorption capacity of MPT adsorbent is 73.33 mg/g. Further, the adsorption kinetic and isotherm are in line with the pseudo-second-order model and Freundlich equilibrium isotherm model. The thermodynamic study showed that the adsorption process is exothermic and spontaneous. Especially, the density functional theory calculations of geometric configuration and isosurface diagram both confirm the interaction mechanisms between MPT and Cd (II) including chelation reactions and electrostatic interactions, which are consistent with experiment results. All these results indicate that MPT bio-adsorbent can be used as an efficient, environmentally friendly and low-cost bio-adsorbent for the removal of Cd (II) contaminants from aqueous solution.
研究领域:
环境科学
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材料科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2020
·
IF 4.872
Jiaying Feng,Jun Zhang,Weifeng Song,Jianguo Liu,Zhicheng Hu,Bingqin Bao
In this paper, environmental friendly magnetic composite adsorbent (MSAL), exhibited excellent adsorption capacity for lead ions in the solution, was successfully prepared using two non-biologically toxic materials including L-cysteine and sodium alginate . Batch experiments were carried out to discuss the influences of different parameters like pH, adsorbent dosing, initial concentration and contact time on adsorption performance. Results showed sorption process followed by pseudo-second-order kinetic model and Langmuir isotherm model, which suggested the adsorption was limited by the chemical process dominated by the molecular layer. Based on Langmuir isotherm model, the maximum Pb(Ⅱ) adsorption capacity was about 330 mg/g, which was better than a large amount of other lead adsorbents. Various analytical methods, such as SEM-EDS, FTIR, VSM, TGA, XPS and Zeta potential , were applied to characterize the performance of this adsorbent as well as exploring the adsorption mechanism. Characterization results found this adsorbent exhibited a large contact area, good thermal stability, sufficient adsorption sites and excellent magnetic responsiveness. It also has been found that the adsorption mechanism mainly included ion exchange and chelation between amino, carboxyl and lead ions. After 5 cycles, the adsorption capacity decreased from 98.04% to 87.40% and still maintained at high level. The average iron ions concentration in the adsorbed solution sample or in the regeneration solution were 0.34 mg/L and 0.15 mg/L. Overall, all above results imply that MSAL is a promising reusable adsorbent for removing Pb(Ⅱ) in solution.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
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2017
·
IF 5.951
Fanqing Meng,Bowen Yang,Baodong Wang,Shibo Duan,Zhen Chen,Wei Ma
In this work, a novel porous biosorbent (HF-D) based on orange peel (OP) was prepared by an efficient and simple method. The prepared HF-D showed well-ordered dendrimerlike structures and remarkable adsorption performance for the removal of arsenic. Particularly, morphology and structure details proved that the dendrimerlike structure was formed by surrounding the crystal iron nanoparticles with amorphous carbon. Furthermore, the influence of various environmental factors (initial pH, coexisting inorganic ions, humic substances, etc.) on the adsorption of As(V) was investigated. An extraordinary As(V) adsorption capacity (81.3 mg/g) has been observed when the Fe/biomass ratio was 10 wt %. Adsorption and characterization data proved that the behavior of As(V) on HF-D was an adsorption–reduction process, including complex adsorption and inner reduction. In addition, the adsorption kinetics and isotherms were analyzed. The regeneration and application in groundwater solution of the prepared HF-D were discussed. This study not only provides an efficient biosorbent for removing arsenic but also a low cost and environmentally friendly method for synthesizing porous biomass based materials.
研究领域:
环境科学
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材料科学
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生物学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
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2021
·
IF 0.284
Lili Xu,Hongbo Suo,Renmin Liu
A facile magnetic chitosan composite used for heavy metal ions removal was prepared. The adsorbents with large specific area and rich carboxyl groups exhibited good removal of Cd(II) ions and could be easily separated with magnetic separation. The adsorption capacity of Cd(II) was 48 mg g −1 and the removal efficiency reached 86.7% after five cycles. Thus, the prepared magnetic chitosan composite could act as a potential adsorbent for Cd(II) ions removal.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2015
·
IF 4.321
Qilei Zhang,Tao Lu,Dong-Mei Bai,Dong-Qiang Lin,Shan-Jing Yao
Biosorbents for wastewater treatments is one of the most widely studied techniques in environmental and bioresource research. A marine-derived Penicillium janthinellum strain fungus was used in this study to prepare self-immobilized mycelial pellets. Fe 3 O 4 nanoparticles were added in the culturing media, which were automatically incorporated in the mycelial pellets during culturing process to endow the pellets with magnetic properties. These magnetic mycelial pellets were used as biosorbents for water treatments , and their morphology was characterized by microscopic observation, Energy dispersive X-ray analysis, Fourier transform infrared spectroscopy and thermal gravimetric analysis . The effects of nanoparticles in culture media on pellet formation were discussed and the content of nanoparticle in culturing media was optimized. Study on Congo red adsorption from aqueous solutions showed that the pellets with 71.6 wt% Fe 3 O 4 nanoparticles had a maximum adsorption capacity of 102.4 mg/g pellets (360.6 mg/g mycelia), and the solution heated by magnetic induction showed faster adsorption rates than that of bulk liquid heating processes under the same adsorption temperature. These pellets were easily separated by magnetic forces and the magnetic induction heating is beneficial in energy saving when comparing to traditional heating processes.
研究领域:
环境科学
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2019
·
IF 6.669
Chaofan Zheng,Huaili Zheng,Chao Hu,Yili Wang,Yongjuan Wang,Chun Zhao,Wei Ding,Qiang Sun
Magnetic biosorbents with specific morphological and molecular structure (PMCCs) were designed for the removal of ciprofloxacin (CIP) from water. Radical polymerization method was applied to immobilize the designed polymer brushes onto core-shell shaped magnetic microspheres to fabricate PMCCs. PMCCs exhibited a maximum adsorption capacity of 527.93 mg·g −1 , which is much higher than reported adsorbents, owing to the complete stretch of polymer brushes and increased active sites as well as enhanced interaction. The investigation on the adsorption behavior of PMCCs for CIP manifested that CIP adsorption well fitted the Langmuir isotherm model and pseudo-second-order kinetic model. The calculated thermodynamic parameters suggested that CIP adsorption onto PMCCs was spontaneous and exothermic. Further recycling experiments showed a loss of less than 20% in the CIP adsorption capacity after five times, demonstrating the reusability of the as-designed biosorbents.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）