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Zhang M, Liu Z, Han F, Cong H, Zhou W. Co-application of phytoremediation with iron-loaded biochar in petroleum and zinc co-contaminated soil. ENVIRONMENTAL RESEARCH 2024; 263:120037. [PMID: 39307227 DOI: 10.1016/j.envres.2024.120037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2024] [Revised: 09/13/2024] [Accepted: 09/18/2024] [Indexed: 09/27/2024]
Abstract
Phytoremediation, a proven technique widely used in soil remediation, encounters challenges in addressing the synergistic effect of petroleum and heavy metals in co-contaminated soils. Enhancing phytoremediation with modified biochar could improve its effectiveness, but the remediation mechanism of pollutants and the structure of microbial communities in soil aggregates have rarely been studied. Ferrate-modified biochar (FeBC) was used in this study to promote the phytoremediation of petroleum and zinc co-contaminated soils. Results showed that ferrate significantly enhanced the microstructure, elemental composition, and surface crystal composition of pristine biochar. The co-remediation by FeBC and ryegrass significantly improved the removal of petroleum hydrocarbons in soil, especially in meso-aggregates. Simultaneously, the bioavailability of zinc in the soil was reduced by FeBC, contributing to the less accumulation of zinc in ryegrass. The interactions among FeBC, soil aggregates and ryegrass indicated that FeBC enhanced the plant resistance by the formation of iron membranes on the surface of ryegrass roots, and enriched dissolved organic matters in meso- and micro-aggregates. The addition of FeBC resulted in the increase of urease and alkaline phosphatase activities in the rhizosphere soil of ryegrass. Furthermore, the application of FeBC led to a notable increase in the content of phospholipid fatty acids in the ryegrass rhizosphere soil, particularly in bacterial populations within the soil meso- and micro-aggregates fractions. The bacterial communities with more cooperative relationship and greater stability were reshaped in different soil aggregate structures by the FeBC addition. This study delves into the potential mechanism of co-remediation by exploring the interactions among ferrate-modified biochar, rhizosphere microbial community and soil aggregates, providing innovative insights into the phytoremediation of soil contaminated by petroleum and zinc.
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Affiliation(s)
- Mengru Zhang
- School of Civil Engineering, Shandong University, Jinan, 250061, PR China
| | - Zhe Liu
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, PR China
| | - Fei Han
- School of Civil Engineering, Shandong University, Jinan, 250061, PR China
| | - Haitao Cong
- Shandong Land Development Group Co.,Ltd, Jinan, 250014, PR China
| | - Weizhi Zhou
- School of Civil Engineering, Shandong University, Jinan, 250061, PR China.
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2
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Mao W, Li Y, Zhang L, Shen X, Liu Y, Li R, Guan Y. Photoexcitation-induced efficient detoxification and removal of arsenite in contaminated water by a layered double hydroxide-supported polyacrylate stabilized ferrous sulfide composite. JOURNAL OF HAZARDOUS MATERIALS 2024; 474:134812. [PMID: 38850950 DOI: 10.1016/j.jhazmat.2024.134812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/27/2024] [Accepted: 06/03/2024] [Indexed: 06/10/2024]
Abstract
The effective detoxification and removal of arsenite (As(III)) has been widely concerned because of its strong toxicity and migration ability. In this study, we designed a layered double hydroxide-supported polyacrylate stabilized ferrous sulfide composite (PAA/FeS@LDH) and coupled it with UV excitation to purify As(III)-polluted water. The removal efficiency of As(III) under UV irradiation reached almost 100% in 120 min, and the first-order kinetic constant was 3.12 orders of magnitude higher than under dark. UV irradiation significantly accelerated the oxidation and detoxification of As(III) at the interface of PAA/FeS@LDH and treatment solution. It is attributable to the generation of reactive oxygen species (ROS) intermediates, including .O2-, .OH, and SO4.- under UV irradiation, because of the presence of the photogenerated electron-hole pairs and iron valence states cycles. Importantly, .O2- may be rapidly captured and oxidized to 1O2 on the surface of PAA/FeS@LDH that is also an important contributor to the oxidation removal of As(III). Noticeably, As(III) concentrations in the real water were rapidly reduced to below the guideline limitation of drinking water (10 μg/L) within 20 min under UV irradiation. Our outcomes provide a novel photoexcitation treatment system for the efficient detoxification and removal of As from actual wastewater.
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Affiliation(s)
- Wei Mao
- Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China; State Environmental Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Yibing Li
- Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China; State Environmental Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Lixun Zhang
- Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China; State Environmental Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, PR China.
| | - Xuewu Shen
- Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China; State Environmental Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Yang Liu
- Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China; State Environmental Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Ruohan Li
- Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China; State Environmental Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Yuntao Guan
- Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China; State Environmental Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing 100084, PR China.
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Zheng L, Sun L, Qiu J, Song J, Zou L, Teng Y, Zong Y, Yu H. Using NH 2-MIL-125(Ti) for efficient removal of Cr(VI) and RhB from aqueous solutions: Competitive and cooperative behavior in the binary system. J Environ Sci (China) 2024; 136:437-450. [PMID: 37923453 DOI: 10.1016/j.jes.2023.02.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/06/2023] [Accepted: 02/06/2023] [Indexed: 11/07/2023]
Abstract
The coexistence of inorganic and organic contaminants is a challenge for real-life water treatment applications. Therefore, in this research, we used NH2-MIL-125(Ti) to evaluate the single adsorption of hexavalent chromium (Cr(VI)) or Rhodamine B (RhB) in an aqueous solution and further investigate simultaneous adsorption experiments to compare the adsorption behavior changes. The main influencing factors, for example, reaction time, initial concentration, reaction temperature, and pH were studied in detail. In all reaction systems, the pseudo-second-order kinetic and Langmuir isotherm models were well illuminated the adsorption progress of Cr(VI) and RhB. Thermodynamic studies showed that the adsorption process was spontaneous and endothermic. As compared to the single system, the adsorption capacity of Cr(VI) in the binary system gradually decreased as the additive amount of RhB increased, whereas the adsorption capacity of RhB in the binary system was expanded brilliantly. When the binary reaction system contained 100 mg/L Cr(VI), the removal rate of RhB increased to 97.58%. The formation of Cr(VI)-RhB and Cr(III)-RhB complexes was the cause that provided facilitation for the adsorption of RhB. These findings prove that the interactions during the water treatment process between contaminants may obtain additional benefits, contributing to a better adsorption capacity of co-existing contaminant.
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Affiliation(s)
- Lei Zheng
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Lixia Sun
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Jiangbo Qiu
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Junling Song
- School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Luyi Zou
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Yue Teng
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | | | - Hongyan Yu
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China.
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4
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Flores León J, Quiroz Castillo JM, Rodríguez Félix DE, Castillo Ortega MM, Cabrera-González AD, Ramirez-Mendoza CG, Santacruz-Ortega H, Suárez-Campos G, Valenzuela-García JL, Herrera-Franco PJ. Preparation and Characterization of Extruded PLA Films Coated with Polyaniline or Polypyrrole by In Situ Chemical Polymerization. ACS OMEGA 2023; 8:43243-43253. [PMID: 38024776 PMCID: PMC10653065 DOI: 10.1021/acsomega.3c07201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/16/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023]
Abstract
Conductive polymers, such as polypyrrole and polyaniline, have been extensively studied for their notable intrinsic electronic and ionic conductivities, rendering them suitable for a range of diverse applications. In this study, in situ chemical polymerization was employed to coat extruded PLA films with PPy and PANi. Morphological analysis reveals a uniform and compact deposition of both polyaniline and polypyrrole after polymerization periods of 3 and 1 h, respectively. Furthermore, the PLA-PANi-3h and PLA-PPy-1h composites exhibited the highest electrical conductivity, with values of 0.042 and 0.022 S cm-1, respectively. These findings were in agreement with the XPS results, as the polyaniline-coated film showed a higher proportion of charge carriers compared to the polypyrrole composite. The elastic modulus of the coated films showed an increase compared with that of pure PLA films. Additionally, the inflection temperatures for the PLA-PANi-3h and PLA-PPy-1h composites were 368.7 and 367.2 °C, respectively, while for pure PLA, it reached 341.47 °C. This improvement in mechanical and thermal properties revealed the effective interfacial adhesion between the PLA matrix and the conducting polymer. Therefore, this work demonstrates that coating biopolymeric matrices with PANi or PPy enables the production of functional and environmentally friendly conductive materials suitable for potential use in the removal of heavy metals in water treatment.
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Affiliation(s)
- José
Ramón Flores León
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, C.P. 83000 Hermosillo, Sonora, México
| | - Jesús Manuel Quiroz Castillo
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, C.P. 83000 Hermosillo, Sonora, México
| | - Dora E. Rodríguez Félix
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, C.P. 83000 Hermosillo, Sonora, México
| | - María Mónica Castillo Ortega
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, C.P. 83000 Hermosillo, Sonora, México
| | - Ana Daymi Cabrera-González
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, C.P. 83000 Hermosillo, Sonora, México
| | | | - Hisila Santacruz-Ortega
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, C.P. 83000 Hermosillo, Sonora, México
| | - Guillermo Suárez-Campos
- Departamento
de Investigación en Física, Universidad de Sonora, C.P. 83000 Hermosillo, Sonora, México
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Pal CA, Choi JS, Angaru GKR, Lingamdinne LP, Choi YL, Koduru JR, Yang JK, Chang YY. Efficiency of Ppy-PA-pani and Ppy-PA composite adsorbents in Chromium(VI) removal from aqueous solution. CHEMOSPHERE 2023; 337:139323. [PMID: 37392794 DOI: 10.1016/j.chemosphere.2023.139323] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/20/2023] [Accepted: 06/23/2023] [Indexed: 07/03/2023]
Abstract
In this study, first time the combination of composites with Phytic acid (PA) as the organic binder cross-linker is reported. The novel use of PA with single and double conducting polymers (polypyrrole (Ppy) and polyaniline (Pani)) were tested against removal of Cr(VI) from wastewater. Characterizations (FE-SEM, EDX, FTIR, XRD, XPS) were performed to study the morphology and removal mechanism. The adsorption removal capability of Polypyrrole - Phytic Acid - Polyaniline (Ppy-PA-Pani) was deemed to be higher than Polypyrrole - Phytic Acid (Ppy-PA) due to the mere existence of Polyaniline as the extra polymer. The kinetics followed 2nd order with equilibration at 480 min, but Elovich model confirmed that chemisorption is followed. Langmuir isotherm model exhibited maximum adsorption capacity of 222.7-321.49 mg/g for Ppy-PA-Pani and 207.66-271.96 mg/g for Ppy-PA at 298K-318K with R2 values of 0.9934 and 0.9938 respectively. The adsorbents were reusable for 5 cycles of adsorption-desorption. The thermodynamic parameter, ΔH shows positive values confirmed the adsorption process was endothermic. From overall results, the removal mechanism is believed to be chemisorption through Cr(VI) reduction to Cr(III). The use of phytic acid (PA) as organic binder with combination of dual conducting polymer (Ppy-PA-Pani) was invigorating the adsorption efficiency than just single conducting polymer (Ppy-PA).
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Affiliation(s)
| | - Jong-Soo Choi
- Department of Environmental Engineering, Kwangwoon University, Seoul, 01897, Republic of Korea
| | | | | | - Yu-Lim Choi
- Department of Environmental Engineering, Kwangwoon University, Seoul, 01897, Republic of Korea
| | - Janardhan Reddy Koduru
- Department of Environmental Engineering, Kwangwoon University, Seoul, 01897, Republic of Korea.
| | - Jae-Kyu Yang
- Department of Environmental Engineering, Kwangwoon University, Seoul, 01897, Republic of Korea
| | - Yoon-Young Chang
- Department of Environmental Engineering, Kwangwoon University, Seoul, 01897, Republic of Korea.
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Bekhoukh A, Kiari M, Moulefera I, Sabantina L, Benyoucef A. New Hybrid Adsorbents Based on Polyaniline and Polypyrrole with Silicon Dioxide: Synthesis, Characterization, Kinetics, Equilibrium, and Thermodynamic Studies for the Removal of 2,4-Dichlorophenol. Polymers (Basel) 2023; 15:polym15092032. [PMID: 37177179 PMCID: PMC10181055 DOI: 10.3390/polym15092032] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/22/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023] Open
Abstract
In the current study, polyaniline and polypyrrole with silicon dioxide (PAni:PPy@SiO2) were combined to formulate a new adsorbent, which was examined using XRD, TEM, SEM, FTIR, TGA, and BET, and the adsorption kinetics were investigated by UV-vis spectroscopy. The optical band gap was also evaluated. The electrochemical behavior was investigated using cyclic voltammograms. Moreover, experimental conditions were used to evaluate the 2,4-dichlorophenol (2,4-DCP) adsorption based on the pH, temperature, reaction time, and initial concentration. The analytical isotherm data were determined by Langmuir, Freundlich, Temkin, Sips, and Redlich-Peterson models. For the analysis of the kinetic data, the pseudo-first- and -second-order models and the intraparticle diffusion model were investigated. It was found that this new adsorbent possessed the highest adsorption efficiency after several regeneration cycles. Furthermore, the thermodynamic parameters of adsorption, such as entropy (ΔS), enthalpy (ΔH), and standard Gibbs were measured. These results suggest that the PAni:PPy backbone can generally be better applied for the elimination of 2,4-dichlorophenol by appropriately dispersing it over the surface of suitable SiO2. This search provides a novel way to develop separable, high-performance adsorbents for adsorbing organic contamination from wastewater.
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Affiliation(s)
- Amina Bekhoukh
- Department of Process Engineering, Faculty of Science and Technology, University of Mustapha Stambouli Mascara, Mascara 29000, Algeria
| | - Mohamed Kiari
- Department of Chemical and Physical Sciences, Materials Institute, University of Alicante (UA), 03080 Alicante, Spain
| | - Imane Moulefera
- Chemical Engineering Departement, Faculty of Chemistry, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, 300071 Murcia, Spain
| | - Lilia Sabantina
- Berlin School of Culture + Design, Berlin University of Applied Sciences-HTW Berlin, 12459 Berlin, Germany
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Study on adsorption of hexavalent chromium by composite material prepared from iron-based solid wastes. Sci Rep 2023; 13:135. [PMID: 36599914 DOI: 10.1038/s41598-023-27414-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 01/02/2023] [Indexed: 01/06/2023] Open
Abstract
A new adsorbent with chromium removal function was synthesized by carbon thermal method using iron-containing waste Fenton sludge and carbon-containing solid waste fly ash to treat high pH scoring wastewater generated from industrial processes. The results showed that the adsorbent used T = 273.15 K, pH = 10, t = 1200 min, C0 = 100 mg/L, had a removal rate of Cr(VI) of more than 80%, and the adsorption capacity could reach 393.79 mg/g. The characterization results show that the synthesized mesoporous nitrogen-doped composite material has a large specific surface area and mesoporous structure, and the surface of the material is rich in oxygen-containing functional groups and active sites. Compared with other studies, the adsorption capacity of the material is larger, which indicates that the removal effect of Cr(VI) in this study is better. The adsorption kinetic results show that the adsorption follows a pseudo second kinetic model, and the adsorption process is a chemisorption involving electron sharing or electron exchange. This experiment designed a simple method to synthesize mesoporous nitrogen-doped composites using industrial solid waste, with raw materials from cheap and easily available industrial solid waste, and solved the dual problems of heavy metals in wastewater and solid waste, providing a new idea for the resource utilization of Fenton sludge while not producing secondary pollution.
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