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Slimani Y, Khan A, Nawaz M, Hossain MK, Thakur A. Efficient rhodamine B dye photocatalytic degradation in aqueous media using novel ZnO nanomaterials co-doped with Ce and Dy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 321:124725. [PMID: 38955072 DOI: 10.1016/j.saa.2024.124725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 06/05/2024] [Accepted: 06/24/2024] [Indexed: 07/04/2024]
Abstract
Water pollution caused by dyes and industrial wastewater poses a significant threat to ecosystems. The purification of such pollutants presents a major challenge. Photocatalysis based on semiconductor materials is a potential wastewater treatment process due to its safety and cost-effectiveness. In the present work, Zn1-2xCexDyxO (x = 0.01-0.05) semiconductors were prepared by the sol-gel auto-ignition method. The samples are denoted CDZO1, CDZO3, and CDZO5 for x = 0.01-0.05, respectively. The X-ray diffraction and Raman spectroscopy results revealed the formation of ZnO hexagonal phase wurtzite structure for all synthesized compositions. Different structural properties were determined. It was found that the lattice parameters and the unit cell volume increased, while the crystallite size diminished as x varied from 0.01 to 0.05. Transmission electron microscopy observations confirmed the formation of nanoparticles with the desired chemical compositions. The specific surface area (SSA) values are found to be 39.95 m2/g, 48.62 m2/g, and 51.36 m2/g for CDZO1, CDZO5, and CDZO5 samples, respectively. The reflectance spectra were recorded to examine the optical properties of the different nanoparticles. The values of the optical band gap were 3.221, 3.225, and 3.239 eV for CDZO1, CDZO3, and CDZO5 samples, respectively. In addition, the photocatalytic performance towards RhB dye degradation for the different samples was assessed. It was established that the CDZO3 sample with a moderate SSA value exhibited the superior photocatalytic performance among the other as-prepared samples wherein the percentage of degradation efficiency, and kinetic constant rate attained their maximum values of 98.22 % and 0.0521 min-1, respectively within 75 min. As per the obtained findings, it is evident that the Zn1-2xCexDyxO photocatalyst has prominent potential for use in the degradation of dyes and offers a useful route for impeding the recombination of electron-hole pairs of zinc oxide material.
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Affiliation(s)
- Yassine Slimani
- Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia.
| | - Abuzar Khan
- Interdisciplinary Research Center for Hydrogen Technologies and Carbon Management, King Fahd University of Petroleum & Minerals, Box 5040, Dhahran 31261, Saudi Arabia
| | - Muhammad Nawaz
- Department of Nanomedicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Mohammad Kamal Hossain
- Interdisciplinary Research Center for Sustainable Energy Systems, King Fahd University of Petroleum & Minerals, Box 5040, Dhahran 31261, Saudi Arabia
| | - Atul Thakur
- Centre for Nanotechnology, Amity University Haryana, Gurugram 122413, India
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Kovrlija I, Menshikh K, Abreu H, Cochis A, Rimondini L, Marsan O, Rey C, Combes C, Locs J, Loca D. Challenging applicability of ISO 10993-5 for calcium phosphate biomaterials evaluation: Towards more accurate in vitro cytotoxicity assessment. BIOMATERIALS ADVANCES 2024; 160:213866. [PMID: 38642518 DOI: 10.1016/j.bioadv.2024.213866] [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: 02/23/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 04/22/2024]
Abstract
Research on biomaterials typically starts with cytocompatibility evaluation, using the ISO 10993-5 standard as a reference that relies on extract tests to determine whether the material is safe (cell metabolic activity should exceed 70 %). However, the generalized approach within the standard may not accurately reflect the material's behavior in direct contact with cells, raising concerns about its effectiveness. Calcium phosphates (CaPs) are a group of materials that, despite being highly biocompatible and promoting bone formation, still exhibit inconsistencies in basic cytotoxicity evaluations. Hence, in order to test the cytocompatibility dependence on different experimental setups and material-cell interactions, we used amorphous calcium phosphate, α-tricalcium phosphate, hydroxyapatite, and octacalcium phosphate (0.1 mg/mL to 5 mg/mL) with core cell lines of bone microenvironment: mesenchymal stem cells, osteoblast-like and endothelial cells. All materials have been characterized for their physicochemical properties before and after cellular contact and once in vitro assays were finalized, groups identified as 'cytotoxic' were further analyzed using a modified Annexin V apoptosis assay to accurately determine cell death. The obtained results showed that indirect contact following ISO standards had no sensitivity of tested cells to the materials, but direct contact tests at physiological concentrations revealed decreased metabolic activity and viability. In summary, our findings offer valuable guidelines for handling biomaterials, especially in powder form, to better evaluate their biological properties and avoid false negatives commonly associated with the traditional standard approach.
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Affiliation(s)
- Ilijana Kovrlija
- Institute of Biomaterials and Bioengineering, Faculty of Natural Sciences and Technology, Riga Technical University, Pulka 3, Riga LV-1007, Latvia; Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Riga, Latvia
| | - Ksenia Menshikh
- Center for Translational Research on Autoimmune and Allergic Disease-CAAD, Department of Health Sciences, Università del Piemonte Orientale, 28100 Novara, Italy
| | - Hugo Abreu
- Center for Translational Research on Autoimmune and Allergic Disease-CAAD, Department of Health Sciences, Università del Piemonte Orientale, 28100 Novara, Italy
| | - Andrea Cochis
- Center for Translational Research on Autoimmune and Allergic Disease-CAAD, Department of Health Sciences, Università del Piemonte Orientale, 28100 Novara, Italy
| | - Lia Rimondini
- Center for Translational Research on Autoimmune and Allergic Disease-CAAD, Department of Health Sciences, Università del Piemonte Orientale, 28100 Novara, Italy
| | - Olivier Marsan
- CIRIMAT, Toulouse INP, Université Toulouse 3 Paul Sabatier, CNRS, Université de Toulouse, ENSIACET, 4 allée Emile Monso, 31030 Toulouse cedex 4, France
| | - Christian Rey
- CIRIMAT, Toulouse INP, Université Toulouse 3 Paul Sabatier, CNRS, Université de Toulouse, ENSIACET, 4 allée Emile Monso, 31030 Toulouse cedex 4, France
| | - Christèle Combes
- CIRIMAT, Toulouse INP, Université Toulouse 3 Paul Sabatier, CNRS, Université de Toulouse, ENSIACET, 4 allée Emile Monso, 31030 Toulouse cedex 4, France
| | - Janis Locs
- Institute of Biomaterials and Bioengineering, Faculty of Natural Sciences and Technology, Riga Technical University, Pulka 3, Riga LV-1007, Latvia; Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Riga, Latvia
| | - Dagnija Loca
- Institute of Biomaterials and Bioengineering, Faculty of Natural Sciences and Technology, Riga Technical University, Pulka 3, Riga LV-1007, Latvia; Baltic Biomaterials Centre of Excellence, Headquarters at Riga Technical University, Riga, Latvia.
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Su W, Li Z, Gong T, Wang F, Jin M, Wang Y, Lu Z. An alternative ZnO with large specific surface area: Preparation, physicochemical characterization and effects on growth performance, diarrhea, zinc metabolism and gut barrier function of weaning piglets. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 882:163558. [PMID: 37075996 DOI: 10.1016/j.scitotenv.2023.163558] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 05/03/2023]
Abstract
High-dose ZnO is widely used to prevent diarrhea and promote growth of weaning piglets, which has led to serious problems of animal toxicity, bacterial resistance and environmental pollution. In this study, a novel alternative ZnO (AZO) was prepared and its physicochemical properties were characterized. Animal experiments were further conducted to evaluate the effects of the ZnO forms, the dose of AZO and the combinations with AZO on the growth performance, diarrhea, zinc metabolism and gut barrier function of weaning piglets. The results showed that the AZO, compared with ordinary ZnO (OZO), nano ZnO (NZO) and porous ZnO (PZO), had the largest surface area and reduced the release of Zn2+ into the gastric fluid. AZO showed better antibacterial activity on Escherichia coli K88, Staphylococcus aureus and Salmonella enteritidis but lower cytotoxicity on porcine intestinal epithelial cells. Animal experiments suggested that low-dose AZO, NZO and PZO (300 mg/kg) improved growth performance and reduced diarrhea in weaning piglets as well as high-dose OZO (3000 mg/kg). Notably, low-dose AZO had the lowest diarrhea incidence. Additionally, low-dose AZO in combination with probiotics improved digestibility and digestive enzyme activities. Low-dose AZO in combination with probiotics also upregulated the expression of the intestinal zinc transporter proteins ZIP4 and DMT1, increased zinc bioavailability, reduced faecal zinc emissions, and avoided zinc overload in the liver and oxidative damage caused by high-dose ZnO. Moreover, low-dose AZO in combination with probiotics improved the gut barrier function of weaning piglets by promoting the expression of tight junction proteins, mucins and antimicrobial peptides and increasing gut microbiota diversity and beneficial Lactobacillus. This study proposed a novel strategy to replace high-dose ZnO and antibiotics with low-dose AZO and probiotics in weaning piglets, which effectively improved growth performance and prevented diarrhea while reducing animal toxicity, bacterial resistance, heavy metal residues and zinc emission pollution.
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Affiliation(s)
- Weifa Su
- National Engineering Research Center of Green Feeds and Healthy Livestock Industry, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed, Ministry of Agricultural and Rural Affairs, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, 87 Zhengyang Road, Taiyuan, Shanxi 030000, China; College of Animal Science, Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China
| | - Zhixue Li
- National Engineering Research Center of Green Feeds and Healthy Livestock Industry, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed, Ministry of Agricultural and Rural Affairs, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, 87 Zhengyang Road, Taiyuan, Shanxi 030000, China; College of Animal Science, Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China
| | - Tao Gong
- National Engineering Research Center of Green Feeds and Healthy Livestock Industry, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed, Ministry of Agricultural and Rural Affairs, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, 87 Zhengyang Road, Taiyuan, Shanxi 030000, China; College of Animal Science, Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China
| | - Fengqin Wang
- National Engineering Research Center of Green Feeds and Healthy Livestock Industry, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed, Ministry of Agricultural and Rural Affairs, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, 87 Zhengyang Road, Taiyuan, Shanxi 030000, China; College of Animal Science, Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China
| | - Mingliang Jin
- National Engineering Research Center of Green Feeds and Healthy Livestock Industry, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed, Ministry of Agricultural and Rural Affairs, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, 87 Zhengyang Road, Taiyuan, Shanxi 030000, China; College of Animal Science, Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China
| | - Yizhen Wang
- National Engineering Research Center of Green Feeds and Healthy Livestock Industry, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed, Ministry of Agricultural and Rural Affairs, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, 87 Zhengyang Road, Taiyuan, Shanxi 030000, China; College of Animal Science, Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China
| | - Zeqing Lu
- National Engineering Research Center of Green Feeds and Healthy Livestock Industry, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed, Ministry of Agricultural and Rural Affairs, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, 87 Zhengyang Road, Taiyuan, Shanxi 030000, China; College of Animal Science, Institute of Feed Science, Zhejiang University, 866 Yuhang Tang Road, Hangzhou, Zhejiang 310058, China.
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Stepankova H, Michalkova H, Splichal Z, Richtera L, Svec P, Vaculovic T, Pribyl J, Kormunda M, Rex S, Adam V, Heger Z. Unveiling the nanotoxicological aspects of Se nanomaterials differing in size and morphology. Bioact Mater 2023; 20:489-500. [PMID: 35800405 PMCID: PMC9237951 DOI: 10.1016/j.bioactmat.2022.06.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 03/08/2022] [Accepted: 06/17/2022] [Indexed: 11/26/2022] Open
Abstract
Although the general concept of nanotechnology relies on exploitation of size-dependent properties of nanoscaled materials, the relation between the size/morphology of nanoparticles with their biological activity remains not well understood. Therefore, we aimed at investigating the biological activity of Se nanoparticles, one of the most promising candidates of nanomaterials for biomedicine, possessing the same crystal structure, but differing in morphology (nanorods vs. spherical particles) and aspect ratios (AR, 11.5 vs. 22.3 vs. 1.0) in human cells and BALB/c mice. Herein, we report that in case of nanorod-shaped Se nanomaterials, AR is a critical factor describing their cytotoxicity and biocompatibility. However, spherical nanoparticles (AR 1.0) do not fit this statement and exhibit markedly higher cytotoxicity than lower-AR Se nanorods. Beside of cytotoxicity, we also show that morphology and size substantially affect the uptake and intracellular fate of Se nanomaterials. In line with in vitro data, in vivo i.v. administration of Se nanomaterials revealed the highest toxicity for higher-AR nanorods followed by spherical nanoparticles and lower-AR nanorods. Moreover, we revealed that Se nanomaterials are able to alter intracellular redox homeostasis, and affect the acidic intracellular vesicles and cytoskeletal architecture in a size- and morphology-dependent manner. Although the tested nanoparticles were produced from the similar sources, their behavior differs markedly, since each type is promising for several various application scenarios, and the presented testing protocol could serve as a concept standardizing the biological relevance of the size and morphology of the various types of nanomaterials and nanoparticles.
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Affiliation(s)
- Hana Stepankova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
| | - Hana Michalkova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
| | - Zbynek Splichal
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
| | - Lukas Richtera
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
| | - Pavel Svec
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
| | - Tomas Vaculovic
- Department of Chemistry, Masaryk University, Kamenice 5, Brno, CZ-625 00, Czech Republic
- Institute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15 Bratislava, Slovak Republic
| | - Jan Pribyl
- Central European Institute of Technology, Masaryk University, Kamenice 5, Brno, CZ-625 00, Czech Republic
| | - Martin Kormunda
- Department of Physics, Faculty of Science, J. E. Purkyne University, Pasteurova 1, Usti nad Labem, CZ-400 96, Czech Republic
| | - Simona Rex
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
| | - Zbynek Heger
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
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5
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Qu B, Luo Y. Preparation and characterization of carboxymethyl cellulose capped zinc oxide nanoparticles: A proof-of-concept study. Food Chem 2022; 389:133001. [DOI: 10.1016/j.foodchem.2022.133001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/07/2022] [Accepted: 04/16/2022] [Indexed: 11/04/2022]
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6
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Kad A, Pundir A, Arya SK, Puri S, Khatri M. Meta-analysis of in-vitro cytotoxicity evaluation studies of zinc oxide nanoparticles: Paving way for safer innovations. Toxicol In Vitro 2022; 83:105418. [PMID: 35724836 DOI: 10.1016/j.tiv.2022.105418] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 06/03/2022] [Accepted: 06/14/2022] [Indexed: 02/02/2023]
Abstract
Nano-based products have shown their daunting presence in several sectors. Among them, Zinc Oxide (ZnO) nanoparticles wangled the reputation of providing "next-generation solutions" and are being utilized in plethora of products. Their widespread application has led to increased exposure of these particles, raising concerns regarding toxicological repercussions to the human health and environment. The diversity, complexity, and heterogeneity in the available literature, along with correlation of befitting attributes, makes it challenging to develop one systematic framework to predict this toxicity. The present study aims at developing predictive modelling framework to tap the prospective features responsible for causing cytotoxicity in-vitro on exposure to ZnO nanoparticles. Rigorous approach was used to mine the information from complete body of evidence published to date. The attributes, features and experimental conditions were systematically extracted to unmask the effect of varied features. 1240 data points from 76 publications were obtained, containing 14 qualitative and quantitative attributes, including physiochemical properties of nanoparticles, cell culture and experimental parameters to perform meta-analysis. For the first time, the efforts were made to investigate the degree of significance of attributes accountable for causing cytotoxicity on exposure to ZnO nanoparticles. We show that in-vitro cytotoxicity is closely related with dose concentration of nanoparticles, followed by exposure time, disease state of the cell line and size of these nanoparticles among other attributes.
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Affiliation(s)
- Anaida Kad
- Department of Biotechnology, University Institute of Engineering and Technology, Panjab University, Sector-25, Chandigarh 160014, India
| | - Archit Pundir
- Department of Biotechnology, University Institute of Engineering and Technology, Panjab University, Sector-25, Chandigarh 160014, India
| | - Shailendra Kumar Arya
- Department of Biotechnology, University Institute of Engineering and Technology, Panjab University, Sector-25, Chandigarh 160014, India
| | - Sanjeev Puri
- Department of Biotechnology, University Institute of Engineering and Technology, Panjab University, Sector-25, Chandigarh 160014, India
| | - Madhu Khatri
- Department of Biotechnology, University Institute of Engineering and Technology, Panjab University, Sector-25, Chandigarh 160014, India; Wellcome trustTrust/DBT IA Early Career Fellow Panjab University, Chandigarh 160014, India.
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Du J, Zhang Y, Qv M, Yin Y, Zhang W, Zhang J, Zhang H. Different phototoxicities of ZnO nanoparticle on stream functioning. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 725:138340. [PMID: 32298904 DOI: 10.1016/j.scitotenv.2020.138340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/18/2020] [Accepted: 03/29/2020] [Indexed: 06/11/2023]
Abstract
To explore the chronic phototoxicity of ZnO nanoparticles (NPs) on stream ecosystems, a microcosm experiment was conducted on Populus nigra L. leaf decomposition with ZnO NPs under different light components (visible and ultraviolet (UV) light) with a natural photoperiod. Light components significantly affected the transformation dynamic of ZnO NPs. After chronic exposure (day 15 to 30), ZnO NPs under light irradiation caused significant decrease in the microbial biomass, but significant increase in the fungal biomass. Compared to visible light, UV light led to lower microbial biomass and metabolic activity but higher antioxidant activity when ZnO NP concentrations were 10 and 20 mg L-1, eventually causing significant reductions in decomposition rates. Pleosporales sp., Montagnulaceae sp., and Volutella citronella responded sensitively to ZnO NPs. However, higher decomposition efficiency of leaf nitrogen was achieved under UV light when ZnO NPs concentrations were 10 mg L-1, suggesting that microbial nitrogen-related enzymes and ZnO nanoparticle photocatalytic properties contribute to leaf degradation. In conclusion, the results of this study provide compelling evidence that light components strongly affect ZnO NPs transformation, which impacts microbial communities with consequences for ecological processes in stream ecosystems.
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Affiliation(s)
- Jingjing Du
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China; Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, China.
| | - Yuyan Zhang
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Mingxiang Qv
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Yuting Yin
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Wenfang Zhang
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Jin Zhang
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Hongzhong Zhang
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China; Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, China
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8
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Du J, Qv M, Zhang Y, Yin X, Wan N, Zhang B, Zhang H. The potential phototoxicity of nano-scale ZnO induced by visible light on freshwater ecosystems. CHEMOSPHERE 2018; 208:698-706. [PMID: 29894971 DOI: 10.1016/j.chemosphere.2018.06.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/31/2018] [Accepted: 06/05/2018] [Indexed: 06/08/2023]
Abstract
With the development of nanotechnology, nanomaterials have been widely applied in anti-bacterial coating, electronic device, and personal care products. NanoZnO is one of the most used materials and its ecotoxicity has been extensively studied. To explore the potential phototoxicity of nanoZnO induced by visible light, we conducted a long-term experiment on litter decomposition of Typha angustifolia leaves with assessment of fungal multifaceted natures. After 158 d exposure, the decomposition rate of leaf litter was decreased by nanoZnO but no additional effect by visible light. However, visible light enhanced the inhibitory effect of nanoZnO on fungal sporulation rate due to light-induced dissolution of nanoZnO. On the contrary, enzymes such as β-glucosidase, cellobiohydrolase, and leucine-aminopeptidase were significantly increased by the interaction of nanoZnO and visible light, which led to high efficiency of leaf carbon decomposition. Furthermore, different treatments and exposure time separated fungal community associated with litter decomposition. Therefore, the study provided the evidence of the contribution of visible light to nanoparticle phototoxicity at the ecosystem level.
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Affiliation(s)
- Jingjing Du
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China; Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, China.
| | - Mingxiang Qv
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Yuyan Zhang
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Xiaoyun Yin
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Ning Wan
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China
| | - Baozhong Zhang
- College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Zhengzhou, China
| | - Hongzhong Zhang
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China; Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, China
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9
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Ma X, Zhao F, Qiang Q, Liu T, Wang Y. Fabrication of selective interface of ZnO/CdS heterostructures for more efficient photocatalytic hydrogen evolution. Dalton Trans 2018; 47:12162-12171. [DOI: 10.1039/c8dt02159g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Selective interface in ZnO/CdS heterostructure promote the photocatalytic activity.
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Affiliation(s)
- Xinlong Ma
- Department of Materials Science
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- P. R. China
| | - Fei Zhao
- Department of Materials Science
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- P. R. China
| | - Qinping Qiang
- Department of Materials Science
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- P. R. China
| | - Tongyao Liu
- Department of Materials Science
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- P. R. China
| | - Yuhua Wang
- Department of Materials Science
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- P. R. China
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Du J, Zhang Y, Liu L, Qv M, Lv Y, Yin Y, Zhou Y, Cui M, Zhu Y, Zhang H. Can visible light impact litter decomposition under pollution of ZnO nanoparticles? CHEMOSPHERE 2017; 187:368-375. [PMID: 28858717 DOI: 10.1016/j.chemosphere.2017.08.128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 08/18/2017] [Accepted: 08/24/2017] [Indexed: 06/07/2023]
Abstract
ZnO nanoparticles is one of the most used materials in a wide range including antibacterial coating, electronic device, and personal care products. With the development of nanotechnology, ecotoxicology of ZnO nanoparticles has been received increasing attention. To assess the phototoxicity of ZnO nanoparticles in aquatic ecosystem, microcosm experiments were conducted on Populus nigra L. leaf litter decomposition under combined effect of ZnO nanoparticles and visible light radiation. Litter decomposition rate, pH value, extracellular enzyme activity, as well as the relative contributions of fungal community to litter decomposition were studied. Results showed that long-term exposure to ZnO nanoparticles and visible light led to a significant decrease in litter decomposition rate (0.26 m-1 vs 0.45 m-1), and visible light would increase the inhibitory effect (0.24 m-1), which caused significant decrease in pH value of litter cultures, fungal sporulation rate, as well as most extracellular enzyme activities. The phototoxicity of ZnO nanoparticles also showed impacts on fungal community composition, especially on the genus of Varicosporium, whose abundance was significantly and positively related to decomposition rate. In conclusion, our study provides the evidence for negatively effects of ZnO NPs photocatalysis on ecological process of litter decomposition and highlights the contribution of visible light radiation to nanoparticles toxicity in freshwater ecosystems.
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Affiliation(s)
- Jingjing Du
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China; Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, PR China.
| | - Yuyan Zhang
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Lina Liu
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Mingxiang Qv
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Yanna Lv
- School of Pharmacy, Weifang Medical University, Weifang, PR China
| | - Yifei Yin
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Yinfei Zhou
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Minghui Cui
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Yanfeng Zhu
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Hongzhong Zhang
- School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China; Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, PR China.
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11
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Dumontel B, Canta M, Engelke H, Chiodoni A, Racca L, Ancona A, Limongi T, Canavese G, Cauda V. Enhanced biostability and cellular uptake of zinc oxide nanocrystals shielded with a phospholipid bilayer. J Mater Chem B 2017; 5:8799-8813. [PMID: 29456858 PMCID: PMC5779080 DOI: 10.1039/c7tb02229h] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Accepted: 10/03/2017] [Indexed: 12/20/2022]
Abstract
The surface chemistry and charge of zinc oxide nanocrystals influence their behaviour in biological fluids. A novel lipid bilayer assembly is developed to shield ZnO nanocrystals improving their stability and cell internalization.
The widespread use of ZnO nanomaterials for biomedical applications, including therapeutic drug delivery or stimuli-responsive activation, as well as imaging, imposes a careful control over the colloidal stability and long-term behaviour of ZnO in biological media. Moreover, the effect of ZnO nanostructures on living cells, in particular cancer cells, is still under debate. This paper discusses the role of surface chemistry and charge of zinc oxide nanocrystals, of around 15 nm in size, which influence their behaviour in biological fluids and effect on cancer cells. In particular, we address this problem by modifying the surface of pristine ZnO nanocrystals (NCs), rich of hydroxyl groups, with positively charged amino-propyl chains or, more innovatively, by self-assembling a double-lipidic membrane, shielding the ZnO NCs. Our findings show that the prolonged immersion in simulated human plasma and in the cell culture medium leads to highly colloidally dispersed ZnO NCs only when coated by the lipidic bilayer. In contrast, the pristine and amine-functionalized NCs form huge aggregates after already one hour of immersion. Partial dissolution of these two samples into potentially cytotoxic Zn2+ cations takes place, together with the precipitation of phosphate and carbonate salts on the NCs’ surface. When exposed to living HeLa cancer cells, higher amounts of lipid-shielded ZnO NCs are internalized with respect to the other samples, thus showing a reduced cytotoxicity, based on the same amount of internalized NCs. These results pave the way for the development of novel theranostic platforms based on ZnO NCs. The new formulation of ZnO shielded with a lipid-bilayer will prevent strong aggregation and premature degradation into toxic by-products, and promote a highly efficient cell uptake for further therapeutic or diagnostic functions.
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Affiliation(s)
- B Dumontel
- Department of Applied Science and Technology , Politecnico di Torino , Corso Duca degli Abruzzi 24 , 10129 Turin , Italy .
| | - M Canta
- Department of Applied Science and Technology , Politecnico di Torino , Corso Duca degli Abruzzi 24 , 10129 Turin , Italy .
| | - H Engelke
- Department of Chemistry , Ludwig-Maximilians-University of Munich , Butenandtstrasse 11E , 81377 Munich , Germany
| | - A Chiodoni
- Center for Sustainable Future Technologies - CSFT@POLITO , Istituto Italiano di Tecnologia , Corso Trento 21 , 10129 Turin , Italy
| | - L Racca
- Department of Applied Science and Technology , Politecnico di Torino , Corso Duca degli Abruzzi 24 , 10129 Turin , Italy .
| | - A Ancona
- Department of Applied Science and Technology , Politecnico di Torino , Corso Duca degli Abruzzi 24 , 10129 Turin , Italy .
| | - T Limongi
- Department of Applied Science and Technology , Politecnico di Torino , Corso Duca degli Abruzzi 24 , 10129 Turin , Italy .
| | - G Canavese
- Department of Applied Science and Technology , Politecnico di Torino , Corso Duca degli Abruzzi 24 , 10129 Turin , Italy . .,Center for Sustainable Future Technologies - CSFT@POLITO , Istituto Italiano di Tecnologia , Corso Trento 21 , 10129 Turin , Italy
| | - V Cauda
- Department of Applied Science and Technology , Politecnico di Torino , Corso Duca degli Abruzzi 24 , 10129 Turin , Italy . .,Center for Sustainable Future Technologies - CSFT@POLITO , Istituto Italiano di Tecnologia , Corso Trento 21 , 10129 Turin , Italy
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12
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Boonrungsiman S, Suchaoin W, Chetprayoon P, Viriya-Empikul N, Aueviriyavit S, Maniratanachote R. Shape and surface properties of titanate nanomaterials influence differential cellular uptake behavior and biological responses in THP-1 cells. Biochem Biophys Rep 2017; 9:203-210. [PMID: 28956006 PMCID: PMC5614585 DOI: 10.1016/j.bbrep.2016.12.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 12/18/2016] [Accepted: 12/22/2016] [Indexed: 12/19/2022] Open
Abstract
We investigated cellular uptake behavior and biological responses of spherical and fibrous titanate nanomaterials in human monocyte THP-1 cells. Two titanate nanofibers (TiNFs), namely TF-1 and TF-2, were synthesized from anatase TiO2 nanoparticles (TNPs) via hydrothermal treatment. The synthesized TiNFs and TNPs were thoroughly characterized for their size, crystallinity, surface area and surface pH. TF-1 (∼2 µm in length) was amorphous with an acidic surface, while TF-2 (∼7 µm in length) was brookite with a basic surface. The results demonstrated that none of these titanate nanomaterials resulted in significant cytotoxicity, even at the highest doses tested (50 µg/ml), consistent with an absence of ROS generation and lack of change of mitochondrial membrane potential. While no cytotoxic effect was found in the titanate nanomaterials, TF-2 tended to decrease the proliferation of THP-1 cells. Furthermore, TF-2 resulted in an inflammatory cytokine response, as evidenced by dramatic induction of IL-8 and TNF-α release in TF2 but not TF-1 nor TNPs. These results suggest that shape of titanate nanomaterials plays an important role in cellular internalization, while surface pH may play a prominent role in inflammatory response in THP-1 cells. Titanate nanomaterials show no significant cytotoxicity in THP-1 cells. Cellular uptake pattern is dependent on shape of the nanomaterials. Nanomaterial surface pH is influence inflammatory response in immune cells.
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Affiliation(s)
- Suwimon Boonrungsiman
- Nano Safety and Risk Assessment Laboratory, National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Khlong Luang, Pathum Thani 12120, Thailand
| | - Wongsakorn Suchaoin
- Nano Safety and Risk Assessment Laboratory, National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Khlong Luang, Pathum Thani 12120, Thailand
| | - Paninee Chetprayoon
- Nano Safety and Risk Assessment Laboratory, National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Khlong Luang, Pathum Thani 12120, Thailand
| | - Nawin Viriya-Empikul
- Nanomaterials for Energy and Catalysis Laboratory, National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Khlong Luang, Pathum Thani 12120, Thailand
| | - Sasitorn Aueviriyavit
- Nano Safety and Risk Assessment Laboratory, National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Khlong Luang, Pathum Thani 12120, Thailand
| | - Rawiwan Maniratanachote
- Nano Safety and Risk Assessment Laboratory, National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Khlong Luang, Pathum Thani 12120, Thailand
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13
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A universal biological-materials-assisted hydrothermal route to prepare various inorganic hollow microcapsules in the presence of pollens. POWDER TECHNOL 2016. [DOI: 10.1016/j.powtec.2016.05.063] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Effect of particle size and dispersion status on cytotoxicity and genotoxicity of zinc oxide in human bronchial epithelial cells. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2016; 805:7-18. [DOI: 10.1016/j.mrgentox.2016.05.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 02/10/2016] [Accepted: 05/19/2016] [Indexed: 01/26/2023]
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15
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Le TC, Yin H, Chen R, Chen Y, Zhao L, Casey PS, Chen C, Winkler DA. An Experimental and Computational Approach to the Development of ZnO Nanoparticles that are Safe by Design. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:3568-77. [PMID: 27167706 DOI: 10.1002/smll.201600597] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 04/05/2016] [Indexed: 05/10/2023]
Abstract
Zinc oxide nanoparticles have found wide application due to their unique optoelectronic and photocatalytic characteristics. However, their safety aspects remain of critical concern, prompting the use of physicochemical modifications of pristine ZnO to reduce any potential toxicity. However, the relationships between these modifications and their effects on biology are complex and still relatively unexplored. To address this knowledge gap, a library of 45 types of ZnO nanoparticles with varying particle size, aspect ratio, doping type, doping concentration, and surface coating is synthesized, and their biological effects measured. Three biological assays measuring cell damage or stress are used to study the responses of human umbilical vein endothelial cells (HUVECs) or human hepatocellular liver carcinoma cells (HepG2) to the nanoparticles. These experimental data are used to develop quantitative and predictive computational models linking nanoparticle properties to cell viability, membrane integrity, and oxidative stress. It is found that the concentration of nanoparticles the cells are exposed to, the type of surface coating, the nature and extent of doping, and the aspect ratio of the particles make significant contributions to the cell toxicity of the nanoparticles tested. Our study shows that it is feasible to generate models that could be used to design or optimize nanoparticles with commercially useful properties that are also safe to humans and the environment.
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Affiliation(s)
- Tu C Le
- CSIRO Manufacturing, Bayview Avenue, Clayton, 3168, Australia
| | - Hong Yin
- CSIRO Manufacturing, Bayview Avenue, Clayton, 3168, Australia
| | - Rui Chen
- CAS Key Lab for Biomedical Effects of Nanomaterials and Nanosafety and CAS Centre for Excellence in Nanoscience, National Centre for Nanoscience and Technology of China, Beijing, 100190, China
| | - Yandong Chen
- CAS Key Lab for Biomedical Effects of Nanomaterials and Nanosafety and CAS Centre for Excellence in Nanoscience, National Centre for Nanoscience and Technology of China, Beijing, 100190, China
| | - Lin Zhao
- CAS Key Lab for Biomedical Effects of Nanomaterials and Nanosafety and CAS Centre for Excellence in Nanoscience, National Centre for Nanoscience and Technology of China, Beijing, 100190, China
| | - Philip S Casey
- CSIRO Manufacturing, Bayview Avenue, Clayton, 3168, Australia
| | - Chunying Chen
- CAS Key Lab for Biomedical Effects of Nanomaterials and Nanosafety and CAS Centre for Excellence in Nanoscience, National Centre for Nanoscience and Technology of China, Beijing, 100190, China
| | - David A Winkler
- CSIRO Manufacturing, Bayview Avenue, Clayton, 3168, Australia
- Monash Institute of Pharmaceutical Sciences, 381 Royal Parade, Parkville, VIC, 3052, Australia
- Latrobe Institute for Molecular Science, La Trobe University, Bundoora, VIC, 3046, Australia
- School of Chemical and Physical Sciences, Flinders University, Bedford Park, 5042, Australia
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16
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Liu F, Zhou J, Zhang S, Liu L, Zhou L, Fan W. Schwertmannite Synthesis through Ferrous Ion Chemical Oxidation under Different H2O2 Supply Rates and Its Removal Efficiency for Arsenic from Contaminated Groundwater. PLoS One 2015; 10:e0138891. [PMID: 26398214 PMCID: PMC4580644 DOI: 10.1371/journal.pone.0138891] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 09/04/2015] [Indexed: 11/18/2022] Open
Abstract
Schwertmannite-mediated removal of arsenic from contaminated water has attracted increasing attention. However, schwertmannite chemical synthesis behavior under different H2O2 supply rates for ferrous ions oxidation is unclear. This study investigated pH, ferrous ions oxidation efficiency, and total iron precipitation efficiency during schwertmannite synthesis by adding H2O2 into FeSO4 · 7H2O solution at different supply rates. Specific surface area and arsenic (III) removal capacity of schwertmannite have also been studied. Results showed that pH decreased from ~3.48 to ~1.96, ~2.06, ~2.12, ~2.14, or ~2.17 after 60 h reaction when the ferrous ions solution received the following corresponding amounts of H2O2: 1.80 mL at 2 h (treatment 1); 0.90 mL at 2 h and 14 h (treatment 2); 0.60 mL at 2, 14, and 26 h (treatment 3); 0.45 mL at 2, 14, 26, and 38 h (treatment 4), or 0.36 mL at 2, 14, 26, 38, and 50 h (treatment 5). Slow H2O2 supply significantly inhibited the total iron precipitation efficiency but improved the specific surface area or arsenic (III) removal capacity of schwertmannite. For the initial 50.0 μg/L arsenic (III)-contaminated water under pH ~7.0 and using 0.25 g/L schwertmannite as an adsorbent, the total iron precipitation efficiency, specific surface area of the harvested schwertmannite, and schwertmannite arsenic(III) removal efficiency were 29.3%, 2.06 m2/g, and 81.1%, respectively, in treatment 1. However, the above parameters correspondingly changed to 17.3%, 16.30 m2/g, and 96.5%, respectively, in treatment 5.
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Affiliation(s)
- Fenwu Liu
- Environmental Engineering Laboratory, College of Resource and Environment, Shanxi Agricultural University, Taigu, China
| | - Jun Zhou
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Shasha Zhang
- Environmental Engineering Laboratory, College of Resource and Environment, Shanxi Agricultural University, Taigu, China
| | - Lanlan Liu
- Environmental Engineering Laboratory, College of Resource and Environment, Shanxi Agricultural University, Taigu, China
| | - Lixiang Zhou
- Department of Environmental Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, China
| | - Wenhua Fan
- Environmental Engineering Laboratory, College of Resource and Environment, Shanxi Agricultural University, Taigu, China
- * E-mail:
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