1
|
Wang H, Chen Y, Mo M, Dorsel PKP, Wu C. Visualized adsorption and enhanced photocatalytic removal of Cr 6+ by carbon dots-incorporated fluorescent nanocellulose aerogels. Int J Biol Macromol 2023; 253:127206. [PMID: 37793519 DOI: 10.1016/j.ijbiomac.2023.127206] [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: 08/01/2023] [Revised: 09/13/2023] [Accepted: 09/30/2023] [Indexed: 10/06/2023]
Abstract
In this study, carbon dots (CDs) and titanate nanofibers (TNs) were mixed with TEMPO-oxidized nanocellulose (TOCNC) to prepare fluorescent nanocellulose aerogels (FNAs) by a Schiff base reaction. The resulting FNA can detect the adsorption of Cr6+ through the fluorescence quenching in CDs and promote the removal of Cr6+ through the synergistic effect of CDs in photocatalysis. The optimized FNA has a maximum adsorption capacity of 543.38 mg/g, higher than most reported Cr6+ adsorbents. This excellent performance is due to the porous structure of the aerogel, which gives it a high specific surface area of 20.53 m2/g and provides abundant adsorption sites. Simultaneously, CDs can enhance the amino-induced Cr6+ adsorption, improve the photocatalytic performance of TNs, and expose more adsorption sites through electrostatic adsorption of amino-induced reduction products (Cr3+). This study explores the preparation of visualized nanosorbents with enhanced photocatalytic removal of Cr6+ and provides a new direction for nanoscale photocatalysts.
Collapse
Affiliation(s)
- Hanyu Wang
- State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China
| | - Yehong Chen
- State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China.
| | - Meiqing Mo
- State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China
| | - Padonou-Kengue Patrick Dorsel
- State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China
| | - Chaojun Wu
- State Key Laboratory of Biobased Material and Green Papermaking,Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, Shandong, China.
| |
Collapse
|
2
|
Mao T, Lin L, Shi X, Cheng Y, Luo X, Fang C. Research Progress of Treatment Technology and Adsorption Materials for Removing Chromate in the Environment. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2979. [PMID: 37109815 PMCID: PMC10142896 DOI: 10.3390/ma16082979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/04/2023] [Accepted: 04/06/2023] [Indexed: 06/19/2023]
Abstract
Cr is used extensively in industry, so the number of Cr (VI) hazards is increasing. The effective control and removal of Cr (VI) from the environment are becoming an increasing research priority. In order to provide a more comprehensive description of the research progress of chromate adsorption materials, this paper summarizes the articles describing chromate adsorption in the past five years. It summarizes the adsorption principles, adsorbent types, and adsorption effects to provide methods and ideas to solve the chromate pollution problem further. After research, it is found that many adsorbents reduce adsorption when there is too much charge in the water. Besides, to ensure adsorption efficiency, there are problems with the formability of some materials, which impact recycling.
Collapse
Affiliation(s)
- Tan Mao
- College of Mechanical and Material Engineering, North China University of Technology, Beijing 100144, China
- College of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China
| | - Liyuan Lin
- College of Mechanical and Material Engineering, North China University of Technology, Beijing 100144, China
| | - Xiaoting Shi
- College of Mechanical and Material Engineering, North China University of Technology, Beijing 100144, China
| | - Youliang Cheng
- College of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China
| | - Xueke Luo
- College of Mechanical and Material Engineering, North China University of Technology, Beijing 100144, China
| | - Changqing Fang
- College of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China
| |
Collapse
|
3
|
Sun S, Zhu Y, Gu Z, Chu H, Hu C, Gao L, Zhao X. Adsorption of crystal violet on activated bamboo fiber powder from water: preparation, characterization, kinetics and isotherms. RSC Adv 2023; 13:6108-6123. [PMID: 36814871 PMCID: PMC9940309 DOI: 10.1039/d2ra08323j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 02/07/2023] [Indexed: 02/22/2023] Open
Abstract
Biomass-activated carbon has made a great contribution as an adsorbent in the field of dye wastewater treatment. In this study, the response surface method (RSM) based on the Box-Behnken design was used to optimize the preparation process. Bamboo fiber activated carbon (BAC) with a specific surface area of 2892 m2 g-1 and a pore volume of 1.80 cm3 g-1 was prepared. Various characterization methods (SEM, XPS, XRD, and Raman spectroscopy) were used to analyze the micro-structure of BAC. In the microscopic state, the BAC is fibrous and maintains the originally connected pores of the bamboo fiber. After high-temperature activation, the microcrystallinity of BAC decreases, and the degree of graphitization is low, indicating the presence of amorphous carbon. The adsorption capacity of BAC to crystal violet in simulated wastewater was evaluated via an adsorption experiment. Under the following conditions: the dosage of BAC was 0.04 g, the concentration was 600 mg L-1, the adsorption temperature and time were 25 °C and 30 min, respectively, and the as-prepared BAC had a 99.96% removal rate. The adsorption process conformed to the pseudo-second-order kinetic model and Langmuir adsorption isotherm model, indicating that the adsorption process of CV on BAC belonged to monomolecular layer adsorption. The adsorption process occurs spontaneously and is accompanied by heat release, and the maximum adsorption capacity of BAC within a given concentration range could reach 1353.09 mg g-1. SEM-EDS characterization before and after adsorption showed that ion exchange and the presence of oxygen-containing functional groups played an important role in promoting the adsorption process. The results show that BAC considerably affects CV removal, which has great application prospects.
Collapse
Affiliation(s)
- Shushuang Sun
- Institute of Chemical Engineering, University of Science and Technology Liaoning Anshan 114051 China .,School of Energy and Environmental Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Yaming Zhu
- Institute of Chemical Engineering, University of Science and Technology Liaoning Anshan 114051 China
| | - Zishuo Gu
- Institute of Chemical Engineering, University of Science and Technology Liaoning Anshan 114051 China
| | - Hongyu Chu
- Institute of Chemical Engineering, University of Science and Technology Liaoning Anshan 114051 China
| | - Chaoshuai Hu
- Institute of Chemical Engineering, University of Science and Technology Liaoning Anshan 114051 China
| | - Lijuan Gao
- Institute of Chemical Engineering, University of Science and Technology Liaoning Anshan 114051 China
| | - Xuefei Zhao
- Institute of Chemical Engineering, University of Science and Technology Liaoning Anshan 114051 China
| |
Collapse
|
4
|
Gunadasa SG, Tighe MK, Wilson SC. Arsenic and cadmium leaching in co-contaminated agronomic soil and the influence of high rainfall and amendments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120591. [PMID: 36347408 DOI: 10.1016/j.envpol.2022.120591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 10/03/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
Arsenic (As) and cadmium (Cd) co-contaminate agricultural systems worldwide and threaten water resources, food security and human health. This column leaching study examined As and Cd mobility in an acidic sandy loam Alfisol soil collected from the dry zone of Sri Lankafor four co-contaminant concentration combinations (spiked and 1 year aged As at 20 & 100 mg kg-1 with co-added Cd at 3 & 20 mg kg-1) i, and under the influence of high rainfall (RF), phosphorus fertilizer (P) and lime amendments. In almost all treatments a synergistic co-contaminant adsorption effect was evident which reduced leaching of both elements, significantly in the higher spiked soil concentration treatments. The magnitude of leaching decrease varied with treatment but was greater for As due to its weaker retention in the soil. The co-sorbing effects, evident even under RF, were attributed to electrostatic sorption interactions, the formation of ternary bridging complexes and surface precipitation at higher concentrations. Liming significantly retarded mobilisation of both elements in all treatments, whereas P enhanced As leaching but suppressed Cd leaching, and both amendments moderated co-contaminant effects. An antagonistic effect of Cd on As sorption was evident in two treatments which showed increased As leaching with added Cd: the RF low spike concentration treatment, accredited to washout of stable As-Cd soluble complexes; the P high concentration treatment considered due to P disruption of As-Cd bridging complexes. This work is important for effective risk mitigation in these widely occurring co-contaminated agronomic systems, and demonstrates a strong system effect on synergistic or antagonistic co-contaminant interactions.
Collapse
Affiliation(s)
- Sajanee G Gunadasa
- School of Environmental and Rural Science, University of New England, Armidale, 2351, NSW, Australia.
| | - Matthew K Tighe
- School of Environmental and Rural Science, University of New England, Armidale, 2351, NSW, Australia.
| | - Susan C Wilson
- School of Environmental and Rural Science, University of New England, Armidale, 2351, NSW, Australia.
| |
Collapse
|
5
|
Guo S, Liu Y, Zhang W, Wang Y, Xiao B, Gao Y. N-doped carbon fibers in situ prepared by hydrothermal carbonization of Camellia sinensis branches waste for efficient removal of heavy metal ions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:88951-88961. [PMID: 35841510 DOI: 10.1007/s11356-022-21923-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
N-doped carbon fibers (NCFs) were in situ prepared by Camellia sinensis branches waste through hydrothermal carbonization with urea/ZnCl2 at 160-280 °C under 0.8-8.9 MPa. The structural characteristics of NCFs were investigated by elemental analysis, SEM, TEM, XRD, XPS, Raman spectra, and BET surface area. The highest N content of NCFs obtained at 280 °C was 8.96%, and the main forms of doped N were pyridinic N, pyrrolic N, and graphitic N. Moreover, NCFs were applied to remove metal ions successfully. The results showed that NCF-240 had the maximum adsorption amounts of 106.52, 125.23, and 153.49 mg/g for Cu2+, Pb2+, and Zn2+, respectively, while NCF-280 had the best removal ability on Cr6+ (145.67 mg/g). Finally, it demonstrated that the adsorption behavior of NCFs was well fitted by the pseudo-second-order kinetic and the Langmuir adsorption isotherm models.
Collapse
Affiliation(s)
- Shasha Guo
- College of Horticulture, Northwest A&F University, Yangling, 712100, China
| | - Yubo Liu
- College of Horticulture, Northwest A&F University, Yangling, 712100, China
| | - Weiguo Zhang
- Shaanxi Dongyu Biotechnology Co., Ltd., Xixiang, 723500, China
| | | | - Bin Xiao
- College of Horticulture, Northwest A&F University, Yangling, 712100, China
| | - Yuefang Gao
- College of Horticulture, Northwest A&F University, Yangling, 712100, China.
| |
Collapse
|
6
|
Yin Z, Yu J, Han X, Wang H, Yang Q, Pan H, Lou Y, Zhuge Y. A novel phytoremediation technology for polluted cadmium soil: Salix integra treated with spermidine and activated carbon. CHEMOSPHERE 2022; 306:135582. [PMID: 35803376 DOI: 10.1016/j.chemosphere.2022.135582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 06/27/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
A variety of plants have been used as phytoremediation materials to remove Cd from polluted soil. However, the disadvantages of using plants for decontamination include low biomass, low uptake, and inefficiency. We conducted experiments to determine the effects of spermidine and activated carbon treatments of Salix integra on Cd removal. The results showed that exogenous spermidine and activated carbon increased plant growth and root development compared with the CK. The increased dry mass (39.65-92.95%) with the combined spermidine and activated carbon treatments was higher than that with either single treatment (14.79-62.80%). The root length, surface area, root volume, and root diameter with the combined spermidine and activated carbon treatments (53.51-189.35%, 113.08-207.62%, 111.71-499.27%, and 32.51-106.62%, respectively) were higher than those of the lone application treatments (19.35-132.23%, 52.33-111.57%, 35.08-297.07%, and 24.22-81.38%, respectively). In addition, spermidine and activated carbon application reduced the toxicity of Cd to S. integra by improving the antioxidant capacity, thereby increasing the accumulation of Cd. The application of spermidine and activated carbon also changed the distribution of Cd in each part of S. integra. There was increased accumulation of Cd in the shoots and better absorption by the S. integra shoots, thereby improving their Cd remediation efficiency. The combined 0.8 mM spermidine and 0.5 g kg-1 activated carbon were most effective on removing Cd from the soil. The Cd removal efficiency was 78.11-120.86% higher than that of the CK. Our results may provide foundational information for understanding the mechanisms for the sustainable remediation of Cd-contaminated soil using a combination of spermidine and activated carbon.
Collapse
Affiliation(s)
- Zerun Yin
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer, College of Resources and Environment, Shandong Agricultural University, Taian, 271018, Shandong Province, China; Hunan Agricultural University, Changsha, 410125, Hunan Province, China
| | - Jinpeng Yu
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer, College of Resources and Environment, Shandong Agricultural University, Taian, 271018, Shandong Province, China
| | - Xinran Han
- Hunan Agricultural University, Changsha, 410125, Hunan Province, China
| | - Hui Wang
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer, College of Resources and Environment, Shandong Agricultural University, Taian, 271018, Shandong Province, China
| | - Quangang Yang
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer, College of Resources and Environment, Shandong Agricultural University, Taian, 271018, Shandong Province, China
| | - Hong Pan
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer, College of Resources and Environment, Shandong Agricultural University, Taian, 271018, Shandong Province, China
| | - Yanhong Lou
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer, College of Resources and Environment, Shandong Agricultural University, Taian, 271018, Shandong Province, China.
| | - Yuping Zhuge
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer, College of Resources and Environment, Shandong Agricultural University, Taian, 271018, Shandong Province, China.
| |
Collapse
|
7
|
Iron-Loaded Carbon Aerogels Derived from Bamboo Cellulose Fibers as Efficient Adsorbents for Cr(VI) Removal. Polymers (Basel) 2021; 13:polym13244338. [PMID: 34960889 PMCID: PMC8703939 DOI: 10.3390/polym13244338] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 11/30/2021] [Accepted: 12/06/2021] [Indexed: 11/24/2022] Open
Abstract
A unique iron/carbon aerogel (Fe/CA) was prepared via pyrolysis using ferric nitrate and bamboo cellulose fibers as the precursors, which could be used for high-efficiency removal of toxic Cr(VI) from wastewaters. Its composition and crystalline structures were characterized by FTIR, XPS, and XRD. In SEM images, the aerogel was highly porous with abundant interconnected pores, and its carbon-fiber skeleton was evenly covered by iron particles. Such structures greatly promoted both adsorption and redox reaction of Cr(VI) and endowed Fe/CA with a superb adsorption capacity of Cr(VI) (182 mg/g) with a fast adsorption rate (only 8 min to reach adsorption equilibrium), which outperformed many other adsorbents. Furthermore, the adsorption kinetics and isotherms were also investigated. The experiment data could be much better fitted by the pseudo-second-order kinetics model with a high correlating coefficient, suggesting that the Cr(VI) adsorption of Fe/CA was a chemical adsorption process. Meanwhile, the Langmuir model was found to better describe the isotherm curves, which implied the possible monolayer adsorption mechanism. It is noteworthy that the aerogel adsorbent as a bulk material could be easily separated from the water after adsorption, showing high potential in real-world water treatment.
Collapse
|
8
|
Zou Q, Wang W, Zhang T, Liu Y. Simultaneous removal of Cr(VI), Cd, and Pb from aqueous solution by iron sulfide nanoparticles: Influencing factors and interactions of metals. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.10.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
9
|
Li Y, Zhou M, Waterhouse GIN, Sun J, Shi W, Ai S. Efficient removal of cadmium ions from water by adsorption on a magnetic carbon aerogel. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:5149-5157. [PMID: 32959320 DOI: 10.1007/s11356-020-10859-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 09/14/2020] [Indexed: 06/11/2023]
Abstract
Carbon aerogels are attracting much attention as adsorbents due to their high specific surface and large accessible pores. Herein, we describe a successful synthesis of a magnetic carbon aerogel (MCA) using sodium alginate (SA) as the main carbon source, gelatin (G) as a cross-linking agent and secondary carbon source, and Fe3O4 nanoparticles as the magnetic component. A simple pyrolysis treatment at 550 °C under N2 transformed a Fe3O4/SA/G hydrogel precursor into the MCA. The obtained magnetic carbon aerogel possessed a high specific surface area (145.7 m2/g), a hierarchically porous structure, and an abundance of surface hydroxyl (-OH) and carboxyl (-COOH) groups, resulting in outstanding sorption properties for aqueous Cd(II) (an adsorption capacity of 143.88 mg/Lmg/g). The mechanism of Cd(II) adsorption by the MCA was investigated, with the results obtained suggesting that the MCA removed cadmium ions from water by both electrostatic adsorption and complexation. Since the MCAs contained Fe3O4 nanoparticles, they could easily be separated and recovered from water using a magnet. This study thus identifies a promising and efficient technology for removing Cd(II) ions from aqueous solutions.
Collapse
Affiliation(s)
- Yingchao Li
- College of Chemistry and Material Science, Shandong Agricultural University, 61 Daizong Street, Taian, 271018, Shandong, People's Republic of China
| | - Mengqi Zhou
- College of Chemistry and Material Science, Shandong Agricultural University, 61 Daizong Street, Taian, 271018, Shandong, People's Republic of China
| | - Geoffrey I N Waterhouse
- College of Chemistry and Material Science, Shandong Agricultural University, 61 Daizong Street, Taian, 271018, Shandong, People's Republic of China
- School of Chemical Sciences, The University of Auckland, Auckland, 1142, New Zealand
| | - Jianchao Sun
- School of Environment and Materials Engineering, Yantai University, Yantai, 264005, Shandong, People's Republic of China
| | - Weijie Shi
- College of Chemistry and Material Science, Shandong Agricultural University, 61 Daizong Street, Taian, 271018, Shandong, People's Republic of China.
| | - Shiyun Ai
- College of Chemistry and Material Science, Shandong Agricultural University, 61 Daizong Street, Taian, 271018, Shandong, People's Republic of China.
| |
Collapse
|
10
|
Chang J, Zhang J, Tan B, Wang Q, Liu N, Xue Q. New insight into the removal of Cd(II) from aqueous solution by diatomite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:9882-9890. [PMID: 31927734 DOI: 10.1007/s11356-020-07620-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 01/02/2020] [Indexed: 06/10/2023]
Abstract
Diatomite is an economical and environmentally friendly adsorbent, and its use has been applied widely for the treatment of water contaminated by heavy metals. Despite this, the mechanism for the removal of the heavy metal Cd(II) remains unclear. In this work, we explored the adsorption mechanism of Cd(II) by diatomite using batch experiment, and characterized the diatomite using scanning electron microscopy, energy-dispersive spectrometry, specific surface area, and pore size distribution analysis. Our results showed that, under the experimental conditions, the kinetic adsorption approached equilibrium within 5 min, and the Sips isotherm model was most suitable for data fitting. EDS characterization of the Cd-loaded diatomite indicated that Cd(II) was adsorbed onto the diatomite. Furthermore, desorption experiments showed that Ca2+ and Mg2+ in the diatomite caused an ion exchange interaction, and this was primarily responsible for Cd(II) adsorption. Moreover, we found that its contribution to the whole adsorption reaction could reach 80%, while the remainder of Cd(II) was probably trapped in the microporous structure of the diatomite. Additionally, our data indicated that the adsorption mechanism did not change significantly after regeneration. These results have provided special insight into the deep understanding of the mechanism of Cd(II) adsorption by diatomite, and could provide theoretical support and guidance for further development and application of diatomite in the treatment of Cd(II)-contaminated water. Graphical abstract.
Collapse
Affiliation(s)
- Jingjie Chang
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, People's Republic of China
| | - Jia Zhang
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, People's Republic of China
| | - Biqi Tan
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, People's Republic of China
| | - Qun Wang
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, People's Republic of China
| | - Nannan Liu
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, People's Republic of China
| | - Qiang Xue
- Beijing Key Laboratory of Water Resources and Environmental Engineering, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, People's Republic of China.
- MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, People's Republic of China.
| |
Collapse
|
11
|
Li B, Zhang J, Ma J, Qiao L, Ren B, Chen M, Ren Z. The continuous physiological changes of zebrafish (Danio rerio) based on metabolism under controlled thallium stress. CHEMOSPHERE 2020; 240:124974. [PMID: 31726613 DOI: 10.1016/j.chemosphere.2019.124974] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/23/2019] [Accepted: 09/25/2019] [Indexed: 06/10/2023]
Abstract
In this research, the continuous physiological changes of zebrafish (Danio rerio) in 0.1 μg/L thallium (Tl) in 15 days were investigated. The results showed that Tl(I) stress had a significant positive linear correlation with zebrafish ammonia nitrogen excretion (ANE) (p < 0.001), and the mean value of ANE in Tl(I) treatment (435 ± 227 mg/kg/h) was approximately 2 times higher than in the control group (239 ± 168 mg/kg/h), which suggested that ANE was suitable for Tl(I) stress assessment. A substantial difference based on oxygen consumption rate (OCR) between the control group (587 ± 112 mg/kg/h) and Tl(I) treatment (260 ± 88 mg/kg/h) with a high significance p < 0.001 could be observed, and the results indicated that Tl(I) played a negative role in OCR of zebrafish. The characteristics of both ANE and OCR changes under slight Tl(I) stress could be reflected by the ammonia quotient (AQ). It was noteworthy that AQ increased rapidly in first 6 h from 0.66 to 4.50, which was 3 times higher than 1.2, indicating rapid increase in both anaerobic energy utilization and protein metabolism in 0.1 μg/L Tl(I) exposure. It is concluded that the physiological changes of zebrafish based on metabolism can be regarded as a sensitive biological indicator of Tl(I) pollution, which could work as a substitute of potassium that disrupts the normal biological metabolism in the process of transport.
Collapse
Affiliation(s)
- Bin Li
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan, 250014, PR China
| | - Jingxuan Zhang
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan, 250014, PR China
| | - Jingchun Ma
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan, 250014, PR China
| | - Linlin Qiao
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan, 250014, PR China
| | - Baixiang Ren
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan, 250014, PR China
| | - Meng Chen
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan, 250014, PR China.
| | - Zongming Ren
- Institute of Environment and Ecology, Shandong Normal University, Ji'nan, 250014, PR China.
| |
Collapse
|
12
|
Zhao H, Huang X, Zhang G, Li J, He Z, Ji P, Zhao J. Possibility of removing cadmium pollution from the environment using a newly synthesized material coal fly ash. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:4997-5008. [PMID: 31845260 DOI: 10.1007/s11356-019-07163-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 11/22/2019] [Indexed: 06/10/2023]
Abstract
Coal fly ash (FA) is a solid waste produced in coal combustion. This study focused on the removal of Cd2+ from wastewater by a newly synthesized adsorbent material, the low-temperature and sodium hydroxide-modified fly ash (SHM-FA). The SEM and BET analyses of SHM-FA demonstrated that the adsorbent was porous and had a huge specific surface area. The XRF, XRD, FTIR and TGA characterization showed that SHM-FA has an amorphous structure and the Si-O and Al-O in the fly ash dissolved into the solution, which improved the adsorption capacity of Cd. The results indicated that SHM-FA has desired adsorption performance. The adsorption performance was significantly affected by the dosage, starting pH, Cd2+ initial concentrations, and temperature, as well as adsorption time. In the optimal conditions, the removal efficiency and adsorption capacity of Cd2+ by SHM-FA were 95.76% and 31.79 mg g-1, respectively. The experiment provided clearly explained adsorption kinetics and isotherms. And the results confirmed that the adsorption behavior was well described by the pseudo-second-order kinetic and Langmuir isotherm model, which means that the adsorption of Cd2+ was controlled by SHM-FA through surface reaction and external diffusion process. In addition, the recycling of SHM-FA for reuse after Cd2+ adsorption showed high removal efficiency up to six times of use. Therefore, it can be concluded that SHM-FA is a low-cost adsorbent for Cd2+ removal from wastewater.
Collapse
Affiliation(s)
- Hanghang Zhao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
- Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture/Tianjin Key Laboratory of Agro-environment and Safe-product, Tianjin, 300191, China
| | - Xunrong Huang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Guibin Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Jingtian Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Zhenli He
- Indian River Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Fort Pierce, FL, 34945, USA
| | - Puhui Ji
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China.
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, Liaoning, China.
| | - Junzhe Zhao
- Shenzhen ImMidas Environmental Technology Co., Ltd, Room 210, Chuangke Compound, 1018# Chaguang Road, Nanshan District, Shenzhen, 518000, China
| |
Collapse
|