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Cheng L, Mao Y, Jiang L, Ma R, Ma J, Zhuo Y, Shen Q, Liu C, Zhao L, Xu X, Ji F. Mn(VII) enhanced by CaSO 3 to remove trace organic pollutants in high salt organic wastewater: Further enhancement of salinity. CHEMOSPHERE 2023; 334:138964. [PMID: 37211162 DOI: 10.1016/j.chemosphere.2023.138964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/11/2023] [Accepted: 05/15/2023] [Indexed: 05/23/2023]
Abstract
The high concentration of salt in organic wastewater has a strong inhibitory effect on the removal of pollutants. A method for the efficient removal of trace pollutants in high-salinity organic wastewater was developed. This study investigated the effect of the combination of permanganate [Mn(VII)] and calcium sulfite [S(IV)] on pollutant removal in hypersaline wastewater. The Mn(VII)-CaSO3 system removed more pollutants from high-salinity organic wastewater than from normal-salinity wastewater. Chloride (increasing from 1 M to 5 M) and low concentration of sulfate (increasing from 0.05 M to 0.5 M) significantly enhanced the system's resistance to pollutants under neutral conditions. Despite the fact that Cl- can combine with the free radicals in the system and reduce their efficiency in removing pollutants, the presence of chloride ions greatly enhances the electron transfer rate in the system, promoting the conversion of Mn(VII) to Mn(III) and significantly increasing the reaction rate of Mn(III) as the primary active species. Therefore, chloride salts can greatly enhance the removal of organic pollutants by Mn(VII)-CaSO3. Although sulfate does not react with free radicals, a high concentration of sulfate (1 M) will affect the formation of Mn(III), which greatly weakens the removal effect of the entire system on pollutants. The system can still have a good pollutant removal effect with mixed salt. Altogether, this study demonstrates that the Mn(VII)-CaSO3 system offers new possibilities for the treatment of organic pollutants in hypersaline wastewater.
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Affiliation(s)
- Linsong Cheng
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Yuanxiang Mao
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Lei Jiang
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Rui Ma
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Jiangsen Ma
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Yiyuan Zhuo
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Qiushi Shen
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Caocong Liu
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Liuwei Zhao
- China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu, 610042, China
| | - Xiaoyi Xu
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, China.
| | - Fangying Ji
- College of Environment and Ecology, Chongqing University, Chongqing, 400045, China; Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China.
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2
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Fiori I, Santacruz W, Dionisio D, Motheo AJ. Electro-oxidation of tetracycline in ethanol-water mixture using DSA-Cl 2 anode and stimulating/monitoring the formation of organic radicals. CHEMOSPHERE 2022; 308:136487. [PMID: 36156319 DOI: 10.1016/j.chemosphere.2022.136487] [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: 06/20/2022] [Revised: 08/25/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
Recent studies reported a new strategy of electro-oxidation of organic compounds using methanol as solvent. Considering its well-known toxicity, this work sought to evaluate the use of ethanol as an alternative solvent for pollutants degradation. Therefore, thorough analyses were performed in order to evaluate tetracycline (TC) electro-oxidation using DSA-Cl2 anode in ethanol-H2O solutions. The effects of solvent mixture, pH and current density on the degradation efficiency were evaluated. TC degradation in methanol-water and ethanol-water media resulted in very close removals of 95% and 90%, respectively, after 15 min of electrolysis at 10 mA cm-2. In ethanol medium, the increase in current densities from 10 to 25 mA cm-2 did not lead to significant changes in removal efficiency. The variation of the initial pH of the solution showed that the best removal efficiencies were obtained at neutral pH resulting in TC removals up to 90%, which is actually related to the molecular structure of TC. Through analysis using electron paramagnetic resonance (EPR), the formation of radicals such as hydroxyethyl (CH3●CHOH), hydroxyl (●OH) and ethoxy (CH3CH2O●) were detected, which effectively contributed toward the pollutant oxidation.
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Affiliation(s)
- Isabela Fiori
- São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, CEP, São Carlos, SP, 13560-970, Brazil
| | - William Santacruz
- São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, CEP, São Carlos, SP, 13560-970, Brazil
| | - Dawany Dionisio
- São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, CEP, São Carlos, SP, 13560-970, Brazil
| | - Artur J Motheo
- São Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, CEP, São Carlos, SP, 13560-970, Brazil.
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Macedo LJA, Rodrigues FP, Hassan A, Máximo LNC, Zobi F, da Silva RS, Crespilho FN. Non-destructive molecular FTIR spectromicroscopy for real time assessment of redox metallodrugs. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:1094-1102. [PMID: 34935794 DOI: 10.1039/d1ay01198g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Recent emergence of FTIR spectromicroscopy (micro-FTIR) as a dynamic spectroscopy for imaging to study biological chemistry has opened new possibilities for investigating in situ drug release, redox chemistry effects on biological molecules, DNA and drug interactions, membrane dynamics, and redox reactions with proteins at the single cell level. Micro-FTIR applied to metallodrugs has been playing an important role since the last decade because of its great potential to achieve more robust and controlled pharmacological effects against several diseases, including cancer. An important aspect in the development of these drugs is to understand their cellular properties, such as uptake, accumulation, activity, and toxicity. In this review, we present the potential application of micro-FTIR and its importance for studying metal-based drugs, highlighting the perspectives of chemistry of living cells. We also emphasise bioimaging, which is of high importance to localize the cellular processes, for a proper understanding of the mechanism of action.
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Affiliation(s)
- Lucyano J A Macedo
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13560-970, Brazil.
| | - Fernando P Rodrigues
- Department of Physics and Chemistry, University of São Paulo, Ribeirão Preto, SP 14040-903, Brazil
| | - Ayaz Hassan
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13560-970, Brazil.
| | - Leandro N C Máximo
- Department of Chemistry, Federal Institute of Education, Science and Technology, Goiano, Urutuai, GO 75790-000, Brazil
| | - Fabio Zobi
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, Fribourg, CH-1700, Switzerland
| | - Roberto S da Silva
- Department of Physics and Chemistry, University of São Paulo, Ribeirão Preto, SP 14040-903, Brazil
| | - Frank N Crespilho
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13560-970, Brazil.
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Benniston AC, Zeng L. Recent Advances in Photorelease Complexes for Therapeutic Applications”. Dalton Trans 2022; 51:4202-4212. [DOI: 10.1039/d2dt00254j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photorelease complexes represent a class of agents for which UV-visible light triggers the expulsion of a specfic molecule that is intrinsically part of the inner coordination sphere or held in...
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Muniz Carvalho E, Silva Sousa EH, Bernardes‐Génisson V, Gonzaga de França Lopes L. When NO
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Is not Enough: Chemical Systems, Advances and Challenges in the Development of NO
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and HNO Donors for Old and Current Medical Issues. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100527] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Edinilton Muniz Carvalho
- Bioinorganic Group Department of Organic and Inorganic Chemistry Center of Sciences Federal University of Ceará Pici Campus Fortaleza 60455-760 Brazil
- CNRS Laboratoire de Chimie de Coordination LCC UPR 8241 205 Route de Narbonne, 44099 31077 Toulouse, Cedex 4 France
- Université de Toulouse Université Paul Sabatier UPS 118 Route de Narbonne 31062 Toulouse, Cedex 9 France
| | - Eduardo Henrique Silva Sousa
- Bioinorganic Group Department of Organic and Inorganic Chemistry Center of Sciences Federal University of Ceará Pici Campus Fortaleza 60455-760 Brazil
| | - Vania Bernardes‐Génisson
- CNRS Laboratoire de Chimie de Coordination LCC UPR 8241 205 Route de Narbonne, 44099 31077 Toulouse, Cedex 4 France
- Université de Toulouse Université Paul Sabatier UPS 118 Route de Narbonne 31062 Toulouse, Cedex 9 France
| | - Luiz Gonzaga de França Lopes
- Bioinorganic Group Department of Organic and Inorganic Chemistry Center of Sciences Federal University of Ceará Pici Campus Fortaleza 60455-760 Brazil
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Guadalupe Hernández J, Thangarasu P. A critical evaluation of [ML(ONO)]+ (M = Fe, Ru, Os) as nitric oxide precursor influenced by spin multiplicity and geometrical parameters (M-O-NO and MO-N-O) for the NO release: A theoretical study. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Tang B, Li Z. Reaction between a NO 2 Dimer and Dissolved SO 2: A New Mechanism for ONSO 3- Formation and its Fate in Aerosol. J Phys Chem A 2021; 125:8468-8475. [PMID: 34543016 DOI: 10.1021/acs.jpca.1c06215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Experimental observations indicate that sulfate formation in aerosol is sensitive to the concentrations of nitric oxide (NO2). While it also widely exists as a dimer in the gas phase, previous studies focus on the monomer of NO2. In this study, we employ quantum chemical calculations and ab initio molecular dynamics simulations to investigate the reaction between the NO2 dimer (ONONO2) and sulfite (HSO3-/SO32-) in the gas phase and in an aerosol. Gas-phase reactions turn out to be barrierless. In an aerosol, the reaction between adsorbed ONONO2 and HSO3- to form ONSO3- follows a stepwise mechanism with proton and electron transfer processes. The reaction between ONONO2 and SO32- is more straightforward. Nevertheless, both reactions occur at a picosecond time scale. Decomposition of ONSO3- can form an NO molecule and SO3-, which gives a complementary pathway for sulfate formation in an aerosol. Hydrolysis of ONSO3- to form HNO and HSO4- is highly impossible in an aerosol, which calls for a revisit of the atmospheric N2O formation mechanism. The results presented in this study deepen our understanding of the interaction between NO2 and SO2 pollutants in the atmosphere.
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Affiliation(s)
- Bo Tang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhenyu Li
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
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Understanding of [RuL(ONO)] n+ acting as nitric oxide precursor, a theoretical study of ruthenium complexes of 1,4,8,11-tetraazacyclo- tetradecane having different substituents: How spin multiplicity influences bond angle and bond lengths (Ru-O-NO) in releasing of NO. J Inorg Biochem 2021; 218:111406. [PMID: 33773324 DOI: 10.1016/j.jinorgbio.2021.111406] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 02/19/2021] [Accepted: 02/19/2021] [Indexed: 12/25/2022]
Abstract
Generation of nitric oxide has been a great interest in cell biology as it involves a wide range of physiological functions including the blood pressure control; thus the exploitation of ruthenium chemistry has been motivated in biochemical and clinical points of view. Herein, the structural and electronic properties of ruthenium(II) complexes of 1,4,8,11-tetraazacyclotetradecane containing pyridyl, imidazole and benzimidazole (L1, L2, L3) were analyzed theoretically in the context of how spin multiplicity plays a crucial role influencing the NO release from the LRu-ONO moiety. The results show that β-cleavage of nitrito in the complex motivates the release of NO as it depends highly on total spin multiplicity of metal ion altering significantly the geometrical parameters; particularly, a decrease of bond length of Ru-ONO is highly associated with an increase of RuO-NO bond distance that correlates with the decrease of the Ru-O-NO bond angle ultimately leading to the release of NO; apparently, the bending nature of Ru-O-NO defines its release from the complex. This is consistent with orbital energy (dx2-y2) where the stabilization of axial Ru-O bond in the complex was observed, and proved by molecular orbital studies. In the excitation of the complex (singlet to triplet or singlet to quintet), the NO release has been facilitated, agreeing with the Gibbs free energy data where a lower energy for NO release was obtained compared to other types of excitations. In the calculated electronic spectra, a visible broad band with relatively high intensity for [RuL1ONO]+ was observed, agreeing approximately with reported experimental results.
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Carvalho EM, Ridnour LA, Júnior FSG, Cabral PHB, do Nascimento NRF, Wink DA, Franco DW, de Medeiros MJC, de Lima Pontes D, Longhinotti E, de Freitas Paulo T, Bernardes-Génisson V, Chauvin R, Sousa EHS, Lopes LGDF. A divergent mode of activation of a nitrosyl iron complex with unusual antiangiogenic activity. J Inorg Biochem 2020; 210:111133. [PMID: 32619898 DOI: 10.1016/j.jinorgbio.2020.111133] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/03/2020] [Accepted: 06/07/2020] [Indexed: 11/29/2022]
Abstract
Nitric oxide (NO) and nitroxyl (HNO) have gained broad attention due to their roles in several physiological and pathophysiological processes. Remarkably, these sibling species can exhibit opposing effects including the promotion of angiogenic activity by NO compared to HNO, which blocks neovascularization. While many NO donors have been developed over the years, interest in HNO has led to the recent emergence of new donors. However, in both cases there is an expressive lack of iron-based compounds. Herein, we explored the novel chemical reactivity and stability of the trans-[Fe(cyclam)(NO)Cl]Cl2 (cyclam = 1,4,8,11-tetraazacyclotetradecane) complex. Interestingly, the half-life (t1/2) for NO release was 1.8 min upon light irradiation, vs 5.4 h upon thermal activation at 37 °C. Importantly, spectroscopic evidence supported the generation of HNO rather than NO induced by glutathione. Moreover, we observed significant inhibition of NO donor- or hypoxia-induced HIF-1α (hypoxia-inducible factor 1α) accumulation in breast cancer cells, as well as reduced vascular tube formation by endothelial cells pretreated with the trans-[Fe(cyclam)(NO)Cl]Cl2 complex. Together, these studies provide the first example of an iron-nitrosyl complex with anti-angiogenic activity as well as the potential dual activity of this compound as a NO/HNO releasing agent, which warrants further pharmacological investigation.
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Affiliation(s)
- Edinilton Muniz Carvalho
- Departamento de Química Orgânica e Inorgânica, Grupo de Bioinorgânica, Universidade Federal do Ceará-UFC, P.O Box 6021, Fortaleza, CE CEP 60440-900, Brazil; CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, BP 44099, F-31077 Toulouse, Cedex 4, France; Université de Toulouse, UPS, INPT, F-31077 Toulouse, Cedex 4, France
| | - Lisa A Ridnour
- National Cancer Institute, Cancer and Inflammation Program, Frederick, MD 21702, United States
| | - Florêncio Sousa Gouveia Júnior
- Departamento de Química Orgânica e Inorgânica, Grupo de Bioinorgânica, Universidade Federal do Ceará-UFC, P.O Box 6021, Fortaleza, CE CEP 60440-900, Brazil
| | - Pedro Henrique Bezerra Cabral
- Instituto Superior de Ciências Biomédicas, Universidade Estadual do Ceará-UECE, Paranjana Av, 1700, Fortaleza, Ceará 60740-00, Brazil
| | | | - David A Wink
- National Cancer Institute, Cancer and Inflammation Program, Frederick, MD 21702, United States
| | - Douglas W Franco
- Instituto de Química de São Carlos, Universidade de São Paulo-USP, P.O. Box 780, São Carlos, SP CEP 13566-590, Brazil
| | - Mayara Jane Campos de Medeiros
- Laboratório de Química de Coordenação e Polímeros (LQCPol), Instituto de Química, Universidade Federal do Rio Grande do Norte (UFRN), Natal CEP 59078-970, Brazil
| | - Daniel de Lima Pontes
- Laboratório de Química de Coordenação e Polímeros (LQCPol), Instituto de Química, Universidade Federal do Rio Grande do Norte (UFRN), Natal CEP 59078-970, Brazil
| | - Elisane Longhinotti
- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará-UFC, P.O Box 6021, Fortaleza, CE CEP 60440-900, Brazil
| | - Tércio de Freitas Paulo
- Departamento de Química Orgânica e Inorgânica, Grupo de Bioinorgânica, Universidade Federal do Ceará-UFC, P.O Box 6021, Fortaleza, CE CEP 60440-900, Brazil
| | - Vania Bernardes-Génisson
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, BP 44099, F-31077 Toulouse, Cedex 4, France; Université de Toulouse, UPS, INPT, F-31077 Toulouse, Cedex 4, France
| | - Remi Chauvin
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, BP 44099, F-31077 Toulouse, Cedex 4, France; Université de Toulouse, UPS, INPT, F-31077 Toulouse, Cedex 4, France
| | - Eduardo Henrique Silva Sousa
- Departamento de Química Orgânica e Inorgânica, Grupo de Bioinorgânica, Universidade Federal do Ceará-UFC, P.O Box 6021, Fortaleza, CE CEP 60440-900, Brazil.
| | - Luiz Gonzaga de França Lopes
- Departamento de Química Orgânica e Inorgânica, Grupo de Bioinorgânica, Universidade Federal do Ceará-UFC, P.O Box 6021, Fortaleza, CE CEP 60440-900, Brazil.
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