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Yildirim A, Ascioglu S, Kocer MB, Ozyilmaz E, Yilmaz M. Design of a novel fluorescent metal-organic framework (UiO-66-NG) for the detection of boric acid in aqueous medium and bioimaging in a living plant system. Talanta 2024; 268:125285. [PMID: 37832455 DOI: 10.1016/j.talanta.2023.125285] [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: 07/17/2023] [Revised: 09/10/2023] [Accepted: 10/06/2023] [Indexed: 10/15/2023]
Abstract
UiO-66-NH2 material is a variant of Zr-based MOF most widely used for various applications, exhibiting unprecedented excellent hydrothermal and physicochemical stability. In this study, after UiO-66-NH2 reacted with chlorosulfonyl isocyanate, the fluorescent UiO-66-NG probe was prepared by interacting with the N-methylglucamine molecule. The structure of the prepared probe was confirmed by characterizing them with techniques such as FTIR, SEM, and XRD. The sensing properties of this prepared probe against different anions and cations were investigated and it was understood that it showed sensitive selectivity only for H3BO3. The H3BO3 detection limit (LOD) of the UiO-66-NG probe was determined as 1.81 μM. Boric acid was determined in real samples by using tap water, lake water, and river water. Fluorescence imaging was performed using the plant Lepidium sativum for the detection of boric acid in aqueous medium and for bio-imaging in a living plant system. These results show that the prepared UiO-66-NG can be used successfully in the determination of H3BO3 in living plants.
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Affiliation(s)
- Ayse Yildirim
- Selcuk University, Department of Chemistry, 42075, Konya, Turkey.
| | - Sebahat Ascioglu
- Selcuk University, Department of Biochemistry, 42075, Konya, Turkey
| | | | - Elif Ozyilmaz
- Selcuk University, Department of Biochemistry, 42075, Konya, Turkey
| | - Mustafa Yilmaz
- Selcuk University, Department of Chemistry, 42075, Konya, Turkey.
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Gadore V, Mishra SR, Singh AK, Ahmaruzzaman M. Advances in boron nitride-based nanomaterials for environmental remediation and water splitting: a review. RSC Adv 2024; 14:3447-3472. [PMID: 38259991 PMCID: PMC10801356 DOI: 10.1039/d3ra08323c] [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: 12/06/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
Boron nitride has gained wide-spread attention globally owing to its outstanding characteristics, such as a large surface area, high thermal resistivity, great mechanical strength, low density, and corrosion resistance. This review compiles state-of-the-art synthesis techniques, including mechanical exfoliation, chemical exfoliation, chemical vapour deposition (CVD), and green synthesis for the fabrication of hexagonal boron nitride and its composites, their structural and chemical properties, and their applications in hydrogen production and environmental remediation. Additionally, the adsorptive and photocatalytic properties of boron nitride-based nanocomposites for the removal of heavy metals, dyes, and pharmaceuticals from contaminated waters are discussed. Lastly, the scope of future research, including the facile synthesis and large-scale applicability of boron nitride-based nanomaterials for wastewater treatment, is presented. This review is expected to deliver preliminary knowledge of the present state and properties of boron nitride-based nanomaterials, encouraging the future study and development of these materials for their applications in various fields.
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Affiliation(s)
- Vishal Gadore
- Department of Chemistry, National Institute of Technology Silchar 788010 Assam India
| | - Soumya Ranjan Mishra
- Department of Chemistry, National Institute of Technology Silchar 788010 Assam India
| | - Ashish Kumar Singh
- Department of Chemistry, National Institute of Technology Silchar 788010 Assam India
| | - Md Ahmaruzzaman
- Department of Chemistry, National Institute of Technology Silchar 788010 Assam India
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Saroa A, Singh A, Jindal N, Kumar R, Singh K, Guleria P, Boopathy R, Kumar V. Nanotechnology-assisted treatment of pharmaceuticals contaminated water. Bioengineered 2023; 14:2260919. [PMID: 37750751 PMCID: PMC10524801 DOI: 10.1080/21655979.2023.2260919] [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: 03/15/2023] [Accepted: 09/13/2023] [Indexed: 09/27/2023] Open
Abstract
The presence of pharmaceutical compounds in wastewater due to an increase in industrialization and urbanization is a serious health concern. The demand for diverse types of pharmaceutical compounds is expected to grow as there is continuous improvement in the global human health standards. Discharge of domestic pharmaceutical personal care products and hospital waste has aggravated the burden on wastewater management. Further, the pharmaceutical water is toxic not only to the aquatic organism but also to terrestrial animals coming in contact directly or indirectly. The pharmaceutical wastes can be removed by adsorption and/or degradation approach. Nanoparticles (NPs), such as 2D layers materials, metal-organic frameworks (MOFs), and carbonaceous nanomaterials are proven to be more efficient for adsorption and/or degradation of pharmaceutical waste. In addition, inclusion of NPs to form various composites leads to improvement in the waste treatment efficacy to a greater extent. Overall, carbonaceous nanocomposites have advantage in the form of being produced from renewable resources and the nanocomposite material is biodegradable either completely or to a great extent. A comprehensive literature survey on the recent advancement of pharmaceutical wastewater is the focus of the present article.
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Affiliation(s)
- Amandeep Saroa
- Department of Chemistry, Sri Guru Teg Bahadur Khalsa College, Sri Anandpur Sahib, India
| | - Amrit Singh
- Department of Physics, Sri Guru Teg Bahadur Khalsa College, Sri Anandpur Sahib, India
| | - Neha Jindal
- Department of Chemistry, DAV College, Bathinda, India
| | - Raj Kumar
- Department of Chemistry, School of Basic and Applied Sciences, Maharaja Agrasen University, Baddi, India
| | | | - Praveen Guleria
- Department of Biotechnology, DAV University, Jalandhar, India
| | - Raj Boopathy
- Department of Biological Sciences, Nicholls State University, Thibodaux, LA, USA
| | - Vineet Kumar
- Department of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India
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Gai A, Li Y, Zhan F, Zhang J, Li R. Preparation of Activated Boron Nitride and Its Adsorption Characteristics for Zn, Cu, and Cd in Flue Gas. ACS OMEGA 2023; 8:27612-27620. [PMID: 37546616 PMCID: PMC10399184 DOI: 10.1021/acsomega.3c03348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 06/28/2023] [Indexed: 08/08/2023]
Abstract
Developing non-carbon-based adsorbents is essential for removing heavy metals from post-incineration flue gas. In this study, a new high-temperature-resistant adsorbent-activated boron nitride (BN) was prepared using precursors combined with a high-temperature activation method. The adsorption characteristics of BN for Zn, Cu, and Cd in simulated flue gas and sludge incineration flue gas were investigated using gas-phase heavy metal adsorption experiments. The results showed that BN prepared at 1350 °C for 4 h had defect structures, abundant pores, functional groups, and a high specific surface area of 658 m2/g. The adsorption capacity of BN in simulated flue gases decreases with increasing adsorption temperature, whereas it is always higher than that of activated carbon (AC). The total adsorption capacities for Zn, Cu, and Cd were the highest at 50 °C with 48.3 mg/g. BN had strong adsorption selectivity for Zn, with a maximum adsorption capacity of 54.45 mg/g, and its adsorption process occurred mainly on the surface. Cu and Cd inhibited Zn adsorption, leading to a decrease in the Zn adsorption capacity. In sludge incineration flue gas, BN can quickly reach adsorption equilibrium. The BN had a synergistic disposal capacity for heavy metals and fine particulate matter. The maximum adsorption capacity was reduced compared to the simulated flue gas adsorption capacity, which was 5.1 mg/g. However, BN still exhibited a strong adsorption selectivity for Zn, and its adsorption capacity was always greater than that of AC. The rich functional groups and high specific surface area enable BN to physically and chemically double-adsorb heavy metals.
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Tewatia P, Kaushik V, Jyoti MS, Pathania D, Singhal S, Kaushik A. Highly fluorescent composite of boron nitride quantum dots decorated on cellulose nanofibers for detection and removal of Hg(II) ions from waste water. Int J Biol Macromol 2023; 234:123728. [PMID: 36801283 DOI: 10.1016/j.ijbiomac.2023.123728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 01/06/2023] [Accepted: 02/13/2023] [Indexed: 02/21/2023]
Abstract
To address the challenge of heavy-metal ions in wastewater, boron nitride quantum dots (BNQDs) were synthesized in-situ on rice straw derived cellulose nanofibers (CNFs) as substrate. The composite system exhibited strong hydrophilic-hydrophobic interactions, as corroborated by FTIR, integrated the extraordinary fluorescence properties of BNQDs with fibrous-network of CNFs (BNQD@CNFs) yielding a surface of 35.147 m2 g-1 of luminescent fibers. Morphological studies revealed uniform distribution of BNQDs on CNFs due to hydrogen bonding, according high thermal stability with peak degradation occurring at 347.7 °C and quantum yield of 0.45. The nitrogen-rich surface of BNQD@CNFs exhibited strong affinity for Hg(II), quenching the fluorescence intensity due to combined inner-filter effect and photo-induced electron transfer. The limit of detection (LOD) and limit of quantification (LOQ) were 4.889 nM and 11.1 5 nM, respectively. BNQD@CNFs concomitantly exhibited adsorption of Hg(II) owing to strong electrostatic interactions, confirmed by X-ray photon spectroscopy. Presence of polar BN bonds favoured 96 % removal of Hg(II) at 10 mg L-1 with maximum adsorption capacity of 314.5 mg/ g. Parametric studies corresponded to pseudo-second order kinetics and Langmuir isotherm with R2 ≈ 0.99. BNQD@CNFs exhibited recovery rate between 101.3 %-111 % for real water samples and recyclability upto 5 cycles, demonstrating high potential in wastewater remediation.
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Affiliation(s)
- Preeti Tewatia
- Energy Research Centre, Panjab University, Chandigarh, India
| | - Vishwas Kaushik
- Dr. SSB University Institutes of Chemical Engineering and Technology, Panjab University, Chandigarh, India
| | - Manjot Singh Jyoti
- Dr. SSB University Institutes of Chemical Engineering and Technology, Panjab University, Chandigarh, India
| | - Deepak Pathania
- Department of Environmental Sciences, Central University of Jammu, J&K, India; Department of Chemistry, Sardar Patel University Mandi, Himachal Pradesh 175001, India
| | - Sonal Singhal
- Department of Chemistry, Panjab University, Chandigarh, India.
| | - Anupama Kaushik
- Energy Research Centre, Panjab University, Chandigarh, India; Dr. SSB University Institutes of Chemical Engineering and Technology, Panjab University, Chandigarh, India.
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Park YG, Nam SN, Jang M, Min Park C, Her N, Sohn J, Cho J, Yoon Y. Boron nitride-based nanomaterials as adsorbents in water: A review. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120637] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Yang J, Song Y, Yue Y, Liu W, Che Q, Chen H, Ma H. Chemically Dual-Modified Biochar for the Effective Removal of Cr(VI) in Solution. Polymers (Basel) 2021; 14:polym14010039. [PMID: 35012061 PMCID: PMC8747338 DOI: 10.3390/polym14010039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/17/2021] [Accepted: 12/18/2021] [Indexed: 11/16/2022] Open
Abstract
Here, a dual-modification strategy using KMnO4 (potassium permanganate) and AlCl3·6H2O (aluminum chloride, hexahydrate) as co-modifiers to improve the Cr(VI) removal capacity of K2CO3 activated biochar is introduced. As a result, the dual-modified biochar with KMnO4 and AlCl3·6H2O has the calculated adsorption energy of −0.52 eV and −1.64 eV for HCrO4−, and −0.21 eV and −2.01 eV for Cr2O72−. The Al2O3 (aluminum oxide) and MnO (manganese oxide) embedded on the surface of dual-modified biochar bring more Cr(VI) absorption sites comparing to single-modified biochar, resulting in a maximum Cr(VI) saturated adsorption capacity of 152.86 mg g−1. The excellent removal performance is due to the synthetic effect of electrostatic attraction, reduction reaction, complexation reaction, and physical adsorption. The experimental results also indicated that the spontaneous adsorption process agreed well with the pseudo-second order and Langmuir models. This dual-modification strategy is not limited to the treatment of Cr(VI) with biochar, and may also be incorporated with the treatment of other heavy metals in aqueous environment.
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Affiliation(s)
- Juanjuan Yang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (J.Y.); (Y.S.); (Y.Y.); (H.C.)
- School of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Yu Song
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (J.Y.); (Y.S.); (Y.Y.); (H.C.)
- School of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Yan Yue
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (J.Y.); (Y.S.); (Y.Y.); (H.C.)
| | - Wenfei Liu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA;
| | - Quande Che
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, China;
| | - Honglei Chen
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (J.Y.); (Y.S.); (Y.Y.); (H.C.)
| | - Hongfang Ma
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (J.Y.); (Y.S.); (Y.Y.); (H.C.)
- School of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
- Correspondence:
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Han L, Khalil AM, Wang J, Chen Y, Li F, Chang H, Zhang H, Liu X, Li G, Jia Q, Zhang S. Graphene-boron nitride composite aerogel: A high efficiency adsorbent for ciprofloxacin removal from water. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119605] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Preparation of Poly(acrylic acid) ‐Boron Nitride Composite as a Highly Efficient Adsorbent for Adsorptive Removal of Heavy Metal Ions. ChemistrySelect 2021. [DOI: 10.1002/slct.202100295] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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10
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Zhao S, Li S, Zhao Z, Su Y, Long Y, Zheng Z, Cui D, Liu Y, Wang C, Zhang X, Zhang Z. Microwave-assisted hydrothermal assembly of 2D copper-porphyrin metal-organic frameworks for the removal of dyes and antibiotics from water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:39186-39197. [PMID: 32638310 DOI: 10.1007/s11356-020-09865-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
Adsorption and photocatalysis are promising strategies to remove pollutants of dyes and antibiotics from wastewater. In this study, we demonstrate a rapid microwave-assisted hydrothermal route for the assembly of 2D copper-porphyrin Metal-Organic Frameworks (Cu-TCPP MOFs) within 1 h. The resulting 2D Cu-TCPP nanosheets with excellent crystallinity and a large surface area (342.72 m2/g) exhibited outstanding adsorption performance for typical dyes with adsorption capacities of about 185 mg/g for rhodamine B, 625 mg/g for methylene blue, and 290 mg/g for Congo red, respectively, as well as for representative antibiotics with adsorption capacities of about 130 mg/g for oxytocin, 150 mg/g for tetracycline, and 50 mg/g for norfloxacin, respectively. Meanwhile, the as-prepared 2D Cu-TCPP showed good photocatalytic degradation activity of pollutants after adsorption under irradiation by visible light, reaching removal efficiencies of 81.2 and 86.3% toward rhodamine B and norfloxacin, respectively. These results demonstrate the promising potential of 2D Cu-TCPP for use in the removal of contaminants from wastewater.
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Affiliation(s)
- Shiyin Zhao
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China
- Bioimaging Core, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Shun Li
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China.
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China.
- Foshan (Southern China) Institute for New Materials, Foshan, 528200, Guangdong, China.
| | - Zhicheng Zhao
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China
| | - Yiping Su
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China
| | - Yangke Long
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China
| | - Zuquan Zheng
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China
| | - Daling Cui
- Foshan (Southern China) Institute for New Materials, Foshan, 528200, Guangdong, China
| | - Yong Liu
- Foshan (Southern China) Institute for New Materials, Foshan, 528200, Guangdong, China
| | - Chunfei Wang
- Bioimaging Core, Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Xuanjun Zhang
- Bioimaging Core, Faculty of Health Sciences, University of Macau, Macau SAR, China.
| | - Zuotai Zhang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, People's Republic of China.
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Li Y, Li H, Li R, Su X, Shen S. Preparation of phosphorus-doped boron nitride and its adsorption of heavy metals from flue gas. ROYAL SOCIETY OPEN SCIENCE 2020; 7:200079. [PMID: 32968505 PMCID: PMC7481721 DOI: 10.1098/rsos.200079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 07/10/2020] [Indexed: 06/11/2023]
Abstract
Boron nitride, also known as white graphene, has attracted extensive attention in the fields of adsorption, catalysis and hydrogen storage due to its excellent chemical properties. In this study, a phosphorus-doped boron nitride (P-BN) material was successfully prepared using red phosphorus as a dopant for the preparation of porous boron nitride precursors. The phosphorus content in the P-BN was adjusted based on the addition rate of phosphorus. The specific surface area of P-BN first increased and then decreased with increasing addition rate of phosphorus. The maximum specific surface area was 837.8 m2 g-1 when the phosphorus addition rate was 0.50. The P-BN prepared in the experiments was used as an adsorbent, and its adsorption capacity for heavy metals from flue gas was investigated. In particular, P-BN presented a stronger adsorption selectivity for zinc compared with other heavy metals, and its adsorption capacity for zinc was 5-38 times higher than for other heavy metals. The maximum adsorption capacity of P-BN for zinc and copper in a single heavy metal atmosphere was 69.45 and 53.80 mg g-1, respectively.
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Affiliation(s)
- Yanlong Li
- Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
- Key Laboratory of Clean Energy, College of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, People's Republic of China
| | - Hongxi Li
- Key Laboratory of Clean Energy, College of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, People's Republic of China
| | - Rundong Li
- Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
- Key Laboratory of Clean Energy, College of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, People's Republic of China
| | - Xin Su
- Key Laboratory of Clean Energy, College of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, People's Republic of China
| | - Shengqiang Shen
- Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
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Loofah Sponges as Bio-Carriers in a Pilot-Scale Integrated Fixed-Film Activated Sludge System for Municipal Wastewater Treatment. SUSTAINABILITY 2020. [DOI: 10.3390/su12114758] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Fixed-film biofilm reactors are considered one of the most effective wastewater treatment processes, however, the cost of their plastic bio-carriers makes them less attractive for application in developing countries. This study evaluated loofah sponges, an eco-friendly renewable agricultural product, as bio-carriers in a pilot-scale integrated fixed-film activated sludge (IFAS) system for the treatment of municipal wastewater. Tests showed that pristine loofah sponges disintegrated within two weeks resulting in a decrease in the treatment efficiencies. Accordingly, loofah sponges were modified by coating them with CaCO3 and polymer. IFAS pilot tests using the modified loofah sponges achieved 83% organic removal and 71% total nitrogen removal and met Vietnam’s wastewater effluent discharge standards. The system achieved considerably high levels of nitrification and it was not limited by the loading rate or dissolved oxygen levels. Cell concentrations in the carriers were twenty to forty times higher than those within the aeration tank. Through 16S-rRNA sequencing, the major micro-organism types identified were Kluyvera cryocrescens, Exiguobacterium indicum, Bacillus tropicus, Aeromonas hydrophila, Enterobacter cloacae, and Pseudomonas turukhanskensis. This study demonstrated that although modified loofah sponges are effective renewable bio-carriers for municipal wastewater treatment, longer-term testing is recommended.
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Zhao J, Shao Q, Ge S, Zhang J, Lin J, Cao D, Wu S, Dong M, Guo Z. Advances in Template Prepared Nano-Oxides and their Applications: Polluted Water Treatment, Energy, Sensing and Biomedical Drug Delivery. CHEM REC 2020; 20:710-729. [PMID: 31944590 DOI: 10.1002/tcr.201900093] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 12/04/2019] [Accepted: 12/09/2019] [Indexed: 12/19/2022]
Abstract
The nano-oxide materials with special structures prepared by template methods have a good dispersion, regular structures and high specific surface areas. Therefore, in some areas, improved properties are observed than conventional bulk oxide materials. For example, in the treatment of dye wastewater, the treatment efficiency of adsorbents and catalytic materials prepared by template method was about 30 % or even higher than that of conventional samples. This review mainly focuses on the progress of inorganic, organic and biological templates in the preparation of micro- and nano- oxide materials with special morphologies, and the roles of the prepared materials as adsorbents and photocatalysts in dye wastewater treatment. The characteristics and advantages of inorganic, organic and biological template are also summarized. In addition, the applications of template method prepared oxides in the field of sensors, drug carrier, energy materials and other fields are briefly discussed with detailed examples.
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Affiliation(s)
- Junkai Zhao
- College of Chemical and Environmental Engineering, Shandong, University of Science and Technology, Qingdao, 266590, China
| | - Qian Shao
- College of Chemical and Environmental Engineering, Shandong, University of Science and Technology, Qingdao, 266590, China
| | - Shengsong Ge
- College of Chemical and Environmental Engineering, Shandong, University of Science and Technology, Qingdao, 266590, China
| | - Jiaoxia Zhang
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
| | - Jing Lin
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Dapeng Cao
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shide Wu
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, Zhengzhou, 450001, China
| | - Mengyao Dong
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, 450002, China.,Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA
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