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Wei Z, Chen J, Tong H, Sun M, Tian J, Fan L. Micro-electrolysis based nitrate reduction from aqueous solution by CNTs-Al-Cu composite under alkaline environment. CHEMOSPHERE 2023; 313:137563. [PMID: 36526139 DOI: 10.1016/j.chemosphere.2022.137563] [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: 10/28/2022] [Revised: 12/11/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
CNTs-Al was prepared by ball milling combined with sintering process and then used for CNTs-Al-Cu synthesis with chemical deposition method. The obtained CNTs-Al-Cu composite was systematically characterized and its NO3--N reduction performance under alkaline condition was also evaluated. As indicated by the reduction batch experiment, 80.2% of NO3--N removal efficiency was obtained in 90 min at pH of 9. The product of the reduction process was dominated by NO2--N, which was further reduced to harmless N2. The reusability of CNTs-Al-Cu composite was evaluated, and the experiment results showed that 68.1% of NO3--N removal efficiency was maintained after 3 cycles of regeneration. Finally, based on the characterization results and kinetic analysis, it was concluded that micro-electrolysis was mainly responsible for the removal of NO3--N by CNTs-Al-Cu.
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Affiliation(s)
- Zhiyu Wei
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Jie Chen
- Sichuan Academy of Eco-Environmetal Sciences, Chengdu, 610041, China
| | - Hongjin Tong
- Sichuan Academy of Eco-Environmetal Sciences, Chengdu, 610041, China
| | - Mingchao Sun
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China; Key Laboratory of Treatment for Special Wastewater of Sichuan Province Higher Education System, Sichuan, Chengdu, 610066, China; Sichuan Environmental Protection Key Laboratory of Persistent Pollutant Wastewater Treatment, Sichuan, Chengdu, 610066, China
| | - Jing Tian
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China; Key Laboratory of Treatment for Special Wastewater of Sichuan Province Higher Education System, Sichuan, Chengdu, 610066, China; Sichuan Environmental Protection Key Laboratory of Persistent Pollutant Wastewater Treatment, Sichuan, Chengdu, 610066, China
| | - Lu Fan
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China; Key Laboratory of Treatment for Special Wastewater of Sichuan Province Higher Education System, Sichuan, Chengdu, 610066, China; Sichuan Environmental Protection Key Laboratory of Persistent Pollutant Wastewater Treatment, Sichuan, Chengdu, 610066, China.
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2
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Aksu Z, Acar Yazgı Z, Günan Yücel H. pH shifting effect on anionic dye removal by surfactant-modified sugar beet pulp: Modeling of column studies. J INDIAN CHEM SOC 2023. [DOI: 10.1016/j.jics.2023.100899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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3
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Rapid and effective nitrate reduction over wide pH range using CuxO-CNT with the presence of KBH4: The role of in situ produced hydrogen and zero-valent copper. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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4
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Shemer H, Huang Y, Hasson D, Semiat R. Coupling donann dialysis and electro-reduction process for nitrate removal from simulated groundwater. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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5
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An F, Feng X, Dang Y, Sun D. Enhancing nitrate removal efficiency of micro-sized zero-valent iron by chitosan gel balls encapsulating. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 823:153641. [PMID: 35131244 DOI: 10.1016/j.scitotenv.2022.153641] [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: 12/06/2021] [Revised: 01/26/2022] [Accepted: 01/29/2022] [Indexed: 06/14/2023]
Abstract
The activity of micro-sized zero-valent iron (MZVI) material for nitrate removal in neutral pH and low C/N ratios water needs to be improved. In this study, micro-sized zero-valent iron@chitosan (MZVI@CS) material was synthesized through embedding MZVI particles into chitosan (CS) gel by sol-gel method, and was used for deep removal of NO3--N in the absence of organic carbon sources and neutral pH. The NO3--N removal rate of MZVI@CS was 0.37 mg-N·L-1·d-1 (dosage of 1%, initial pH = 7, 25 °C, initial nitrate concentration = 15 mg-N·L-1), which was 11.33 times higher than that of MZVI. The apparent activation energy (Ea) of MZVI@CS with nitrate was 38.23 kJ·mol-1. MZVI@CS can remove nitrate effectively at a low concentration (15 mg-N·L-1). A stable denitration rate (0.37-2.28 mg-N·L-1·d-1) could be maintained under weak acidic, neutral and alkaline conditions (pH = 5-9). More than 80% of reduced nitrate was converted to N2, and only a small amount was converted to NH4+ or NO2-. The gel structure of MZVI@CS eliminated the agglomeration between MZVI particles while the forming of Fe-CS chelates reduced the formation of iron oxide and solved the problems of passivation, hence successfully strengthened the NO3--N removal efficiency of MZVI. Therefore MZVI@CS has great application potential in NO3--N deep removal of water bodies with neutral pH and low C/N ratios.
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Affiliation(s)
- Facai An
- College of Environmental Science and Engineering, Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing 100083, China
| | - Xianlu Feng
- College of Environmental Science and Engineering, Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing 100083, China
| | - Yan Dang
- College of Environmental Science and Engineering, Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing 100083, China
| | - Dezhi Sun
- College of Environmental Science and Engineering, Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing 100083, China.
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6
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Guleria A, Kumari G, Lima EC, Ashish DK, Thakur V, Singh K. Removal of inorganic toxic contaminants from wastewater using sustainable biomass: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 823:153689. [PMID: 35143799 DOI: 10.1016/j.scitotenv.2022.153689] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 02/01/2022] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
Lignocellulosic biomass is most abundant, ecofriendly and sustainable material on this green planet which has received great attention due to exhaustion of petroleum reserves and various environmental complications. Due to its abundance and sustainability, it has been opted in number of advanced applications i.e. synthesis of green chemicals, biofuels, paper, packaging, biocomposite and for discharge of toxic contaminants from wastewaters. Utilization of sustainable biomass for removal of toxic pollutants from wastewater is robust technique due to its low-cost and easy availability. In this review, we have summarized removal of inorganic pollutants by sustainable lignocellulosic biomass in their natural as well as in chemically functionalized form. Various techniques for modification of sustainable biomass have been discussed and it was found that modified biomass showed better biosorption ability as compared to natural biomass. We conclude that modified biomass biosorbents are useful for removal of toxic inorganic pollutants to deficient levels. Several modification strategies can improve the qualities of biosorbent, however grafting is the most successful among them, as demonstrated in this work. The numerous grafting methods using a free radical grafting process are also summarized in this review article. This review also gathers studies comparing sorption capabilities with and without modification using modified and unmodified biosorbents. Chemically modified cellulosic biomass is favoured over untreated biomass because it has a higher adsorption efficiency, which is favoured by a large number of reactive binding sites, improved ion-exchange characteristics, and more functional groups available after modification.
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Affiliation(s)
- Ashish Guleria
- Department of Applied Sciences, WIT, Dehradun 248007, India
| | - Garima Kumari
- Department of Biotechnology, Eternal University, Baru Sahib, Sirmaur, Himachal Pradesh 173101, India
| | - Eder C Lima
- Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), 15003, Brazil
| | - Deepankar Kumar Ashish
- Department of Civil Engineering, Maharaja Agrasen Institute of Technology, Maharaja Agrasen University, Baddi 174103, India.
| | - Vaishali Thakur
- Department of Chemistry, School of Basic and Applied Sciences, Maharaja Agrasen University, Baddi 174103, India
| | - Kulvinder Singh
- Department of Chemistry, DAV College, Sector 10, Chandigarh 160011, India.
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7
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Guo J, Deng J, An B, Tian J, Wu J, Liu Y. Selective reduction of nitrate to nitrogen by Fe 0-Cu 0-CuFe 2O 4 composite coupled with carbon dioxide anion radical under UV irradiation. CHEMOSPHERE 2022; 295:133785. [PMID: 35104554 DOI: 10.1016/j.chemosphere.2022.133785] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/13/2022] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
Zero-valent iron (Fe0) has been widely used for the reduction of nitrate, but the end reduction product is mainly ammonium. Here, a novel strategy for selective reduction of nitrate (NO3-) to nitrogen gas (N2) with high efficiency and N2 selectivity was investigated using Fe-based material (Fe0-Cu0-CuFe2O4) combined with citric acid (CA) and ultraviolet (UV) irradiation. In this strategy, the nitrate was firstly reduced to nitrite (NO2-) by Fe0-Cu0-CuFe2O4/UV process, and then the produced NO2- could be further reduced to N2 by carbon dioxide anion radicals (CO2•-) which was generated from CA that was added later. In this process, the selective reduction of NO3- to NO2- was a key step. For this purpose, we synthesized Fe0-Cu0-CuFe2O4 composite by simple chemical replacement and in-situ growth process, which made it have a delicate structure with good contact between Cu and Fe and CuFe2O4. The selective reduction of NO3- to NO2- in Fe0-Cu0-CuFe2O4/UV process was due to that the Cu0 was the electron enrichment center and the photo-generated hole could suppress the NO3- reduction to NH4+ by Fe2+. In this proposed strategy, 100% NO3- removal efficiency and 96.3% N2 selectivity were achieved when the initial NO3- concentration was 30 mg N/L and the reduction time was 60 min. The denitrification mechanism of the Fe0-Cu0-CuFe2O4/UV/CA system was proposed.
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Affiliation(s)
- Jinrui Guo
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Jinhua Deng
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Baohua An
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Jing Tian
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Junshu Wu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Yong Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China; Key Laboratory of Treatment for Special Wastewater of Sichuan Province Higher Education System, Jing'an Road 5, Jinjiang District, Sichuan, Chengdu, 610066, China.
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8
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Effective and selective conversion of nitrate from aqueous solutions to nitrogen gas under neutral pH condition using Al/Cu bimetal-sulfamic acid reduction method. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Tofani G, Cornet I, Tavernier S. Multiple linear regression to predict the brightness of waste fibres mixtures before bleaching. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02181-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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10
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Pap S, Gaffney PPJ, Bremner B, Turk Sekulic M, Maletic S, Gibb SW, Taggart MA. Enhanced phosphate removal and potential recovery from wastewater by thermo-chemically calcinated shell adsorbents. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 814:152794. [PMID: 34982996 DOI: 10.1016/j.scitotenv.2021.152794] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/15/2021] [Accepted: 12/26/2021] [Indexed: 06/14/2023]
Abstract
Shell from the seafood processing industry is an under-utilised waste resource worldwide. Calcite, the major component of shell is commonly used in wastewater treatment for the removal of phosphorus (P). Here, mussel and oyster shell-based adsorbents (MSB and OSB) were used for removal of P as phosphate (PO43-) from aqueous solution and secondary wastewater, following preparation through chemical calcination at 700 °C. Batch adsorption experiments were carried out to identify the effects of various operating parameters (e.g., pH, dosage, contact time, initial concentration of P ions, co-existing ions), while a desorption study helped to understand the availability of the bonded P. The optimal contact time for PO43- removal was 120 min using both adsorbents with the dose at 200 mg. Characterisation of the adsorbent was performed using SEM-EDX, pHpzc, BET, FTIR and XRD. The XRD analysis showed that both calcite and lime were present on the surface of the shell particles. P was adsorbed effectively through inner-sphere complexation and surface microprecipitation mechanisms, while an enhanced maximum P adsorption capacity of 12.44 mg/g for MSB and 8.25 mg/g for OSB was reached. The Redlich-Peterson isotherm model fitted well with the equilibrium isotherm data (R2 ≥ 0.97) which also suggested a heterogenic surface. The desorption study (on the saturated adsorbent) found that ~97% of bonded P could be plant available in soil. These results suggest that a shell-based adsorbent can serve as a promising material for P removal from real wastewater effluent and subsequently could be used as a soil conditioner.
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Affiliation(s)
- Sabolc Pap
- Environmental Research Institute, North Highland College, University of the Highlands and Islands, Thurso, Caithness, Scotland KW14 7JD, UK; University of Novi Sad, Department of Environmental Engineering and Occupational Safety and Health, Faculty of Technical Sciences, Novi Sad, Serbia.
| | - Paul P J Gaffney
- Environmental Research Institute, North Highland College, University of the Highlands and Islands, Thurso, Caithness, Scotland KW14 7JD, UK
| | - Barbara Bremner
- Environmental Research Institute, North Highland College, University of the Highlands and Islands, Thurso, Caithness, Scotland KW14 7JD, UK
| | - Maja Turk Sekulic
- University of Novi Sad, Department of Environmental Engineering and Occupational Safety and Health, Faculty of Technical Sciences, Novi Sad, Serbia
| | - Snezana Maletic
- University of Novi Sad, Faculty of Science, Department of Chemistry, Biochemistry and Environmental Protection, Novi Sad, Serbia
| | - Stuart W Gibb
- Environmental Research Institute, North Highland College, University of the Highlands and Islands, Thurso, Caithness, Scotland KW14 7JD, UK
| | - Mark A Taggart
- Environmental Research Institute, North Highland College, University of the Highlands and Islands, Thurso, Caithness, Scotland KW14 7JD, UK
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11
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Sathiasivan K, Swaminathan S, Ramaswamy J, Rajesh M. Investigation of hydrodynamics of inverse fluidized bed reactor (IFBR) for struvite (NH4MgPO4·6H2O) recovery from urban wastewater. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-021-01863-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Baby R, Hussein MZ, Zainal Z, Abdullah AH. Functionalized Activated Carbon Derived from Palm Kernel Shells for the Treatment of Simulated Heavy Metal-Contaminated Water. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3133. [PMID: 34835897 PMCID: PMC8618140 DOI: 10.3390/nano11113133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 06/06/2021] [Accepted: 06/08/2021] [Indexed: 12/22/2022]
Abstract
Heavy metal contamination in water poses a great risk to human health as well as to the lives of other creatures. Activated carbon is a useful material to be applied for the treatment of heavy metal-contaminated water. In this study, functionalized activated carbon (FAC) was produced by the induction of nitro groups onto activated carbon using nitric acid. The resulting material was characterized in detail using the XRD, Raman, BET, FTIR, and FESEM techniques. The FAC was used for the treatment of heavy metal-contaminated water using different adsorption parameters, i.e., solution pH, contact time, adsorbent dosage and heavy metal ion concentrations, and these parameters were systematically optimized. It was found that FAC requires 90 min for the maximum adsorption of the heavy metal ions; Cr6+, Pb2+, Zn2+ and Cd2+. The kinetic study revealed that the metal ion adsorption follows the pseudo-second-order. The Freundlich and Langmuir isotherms were applied to determine the best fitting adsorption isotherm models. The adsorption capacities were also determined for each metal ion.
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Affiliation(s)
- Rabia Baby
- Material Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (R.B.); (Z.Z.); (A.H.A.)
- Department of Education, Sukkur IBA University, Sukkur, Sindh 65200, Pakistan
| | - Mohd Zobir Hussein
- Material Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (R.B.); (Z.Z.); (A.H.A.)
| | - Zulkarnain Zainal
- Material Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (R.B.); (Z.Z.); (A.H.A.)
| | - Abdul Halim Abdullah
- Material Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (R.B.); (Z.Z.); (A.H.A.)
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13
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A Life Cycle Assessment of an Energy-Biochar Chain Involving a Gasification Plant in Italy. LAND 2021. [DOI: 10.3390/land10111256] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Life cycle assessment (LCA) is a fundamental tool for evaluating the environmental and energy load of a production cycle. Its application to renewable energy production systems offers the possibility of identifying the environmental benefits of such processes—especially those related to the by-products of production processes (i.e., digestion or biochar). Biochar has received worldwide interest because of its potential uses in bioenergy production, due to its coproducts (bio-oil and syngas), as well as in global warming mitigation, sustainable agriculture, pollutant removal, and other uses. Biochar production and use of soil is a strategy for carbon sequestration that could contribute to the reduction of emissions, providing simultaneous benefits to soil and opportunities for bioenergy generation. However, to confirm all of biochar’s benefits, it is necessary to characterize the environmental and energy loads of the production cycle. In this work, soil carbon sequestration, nitrous oxide emissions, use of fertilizers, and use of water for irrigation have been considered in the biochar’s LCA, where the latter is used as a soil conditioner. Primary data taken from experiments and prior studies, as well as open-source available databases, were combined to evaluate the environmental impacts of energy production from biomass, as well as the biochar life cycle, including pre- and post-conversion processes. From the found results, it can be deduced that the use of gasification production of energy and biochar is an attractive strategy for mitigating the environmental impacts analyzed here—especially climate change, with a net decrease of about −8.3 × 103 kg CO2 eq. Finally, this study highlighted strategic research developments that combine the specific characteristics of biochar and soil that need to be amended.
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14
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Silvonen J, Järvelä N, Koppanen M, Järveläinen M, Ojuva A, Levänen E. Online monitoring of polysaccharide solution concentration by electromagnetic field, electrical conductivity and spectrophotometry measurements. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01733-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AbstractOnline control of industrial processes by lean principle increases productivity and yields higher product quality. Polysaccharides are dissolved in liquids, such as water, in many industrial products, like paints, cosmetics and culinary products. In these products, it is important to control viscosity or create thixotropy and yield stress for product functionality. Electromagnetic field and electrical conductivity techniques were applied to a meter polysaccharide dissolution process online up to a 0.5 wt% concentration, and the resultant solution was also further tested by UV–Vis spectrophotometry. The electromagnetic field technique measures changes in the local electrical permittivity of the liquid and the interest in this research were to find out whether the changes correlate to the concentration changes during the dissolution of polymer polysaccharide. The results that were obtained showed good consistency, suggesting the feasibility of the electromagnetic field technique in online monitoring of a polysaccharide suspension concentration. Moreover, this technique gives the advantage of instant monitoring of a polysaccharide dissolution for improved process control.
Graphic abstract
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15
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A Review on the Removal of Carbamazepine from Aqueous Solution by Using Activated Carbon and Biochar. SUSTAINABILITY 2021. [DOI: 10.3390/su132111760] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Carbamazepine (CBZ), one of the most used pharmaceuticals worldwide and a Contaminant of Emerging Concern, represents a potential risk for the environment and human health. Wastewater treatment plants (WWTPs) are a significant source of CBZ to the environment, polluting the whole water cycle. In this review, the CBZ presence and fate in the urban water cycle are addressed, with a focus on adsorption as a possible solution for its removal. Specifically, the scientific literature on CBZ removal by activated carbon and its possible substitute Biochar, is comprehensively scanned and summed up, in view of increasing the circularity in water treatments. CBZ adsorption onto activated carbon and biochar is analyzed considering several aspects, such as physicochemical characteristics of the adsorbents, operational conditions of the adsorption processes and adsorption kinetics and isotherms models. WWTPs usually show almost no removal of CBZ (even negative), whereas removal is witnessed in drinking water treatment plants through advanced treatments (even >90%). Among these, adsorption is considered one of the preferable methods, being economical and easier to operate. Adsorption capacity of CBZ is influenced by the characteristics of the adsorbent precursors, pyrolysis temperature and modification or activation processes. Among operational conditions, pH shows low influence on the process, as CBZ has no charge in most pH ranges. Differently, increasing temperature and rotational speed favor the adsorption of CBZ. The presence of other micro-contaminants and organic matter decreases the CBZ adsorption due to competition effects. These results, however, concern mainly laboratory-scale studies, hence, full-scale investigations are recommended to take into account the complexity of the real conditions.
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16
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The fate of char in controlling the rate of heavy metal transfer from soil to potato. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01937-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Lu J, Li B, Li W, Zhang X, Zhang W, Zhang P, Su R, Liu D. Nano iron oxides impregnated chitosan beads towards aqueous Cr(VI) elimination: Components optimization and performance evaluation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126902] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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18
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Su Y, Wenzel M, Paasch S, Seifert M, Böhm W, Doert T, Weigand JJ. Recycling of Brewer's Spent Grain as a Biosorbent by Nitro-Oxidation for Uranyl Ion Removal from Wastewater. ACS OMEGA 2021; 6:19364-19377. [PMID: 34368523 PMCID: PMC8340112 DOI: 10.1021/acsomega.1c00589] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 06/25/2021] [Indexed: 06/13/2023]
Abstract
Developing biosorbents derived from agro-industrial biomass is considered as an economic and sustainable method for dealing with uranium-contaminated wastewater. The present study explores the feasibility of oxidizing a representative protein-rich biomass, brewer's spent grain (BSG), to an effective and reusable uranyl ion adsorbent to reduce the cost and waste generation during water treatment. The unique composition of BSG favors the oxidation process and yields in a high carboxyl group content (1.3 mmol/g) of the biosorbent. This makes BSG a cheap, sustainable, and suitable raw material independent from pre-treatment. The oxidized brewer's spent grain (OBSG) presents a high adsorption capacity of U(VI) of 297.3 mg/g (c 0(U) = 900 mg/L, pH = 4.7) and fast adsorption kinetics (1 h) compared with other biosorbents reported in the literature. Infrared spectra (Fourier transform infrared), 13C solid-state nuclear magnetic resonance spectra, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and thermogravimetric analysis were employed to characterize the biosorbents and reveal the adsorption mechanisms. The desorption and reusability of OBSG were tested for five cycles, resulting in a remaining adsorption of U(VI) of 100.3 mg/g and a desorption ratio of 89%. This study offers a viable and sustainable approach to convert agro-industrial waste into effective and reusable biosorbents for uranium removal from wastewater.
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Affiliation(s)
- Yi Su
- Chair
of Inorganic Molecular Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Marco Wenzel
- Chair
of Inorganic Molecular Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Silvia Paasch
- Chair
of Bioanalytical Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Markus Seifert
- Chair
of Inorganic Molecular Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Wendelin Böhm
- Chair
of Food Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Thomas Doert
- Chair
of Inorganic Chemistry II, TU Dresden, 01062 Dresden, Germany
| | - Jan J. Weigand
- Chair
of Inorganic Molecular Chemistry, TU Dresden, 01062 Dresden, Germany
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19
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Removal of electrolyte impurities from industrial electrolyte of electro-refining copper using green crystallization approach. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01619-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Investigation and optimization of anaerobic system for treatment of seafood processing wastewater. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01675-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zhang P, Xu XY, Zhang XL, Zou K, Liu BZ, Qing TP, Feng B. Nanoparticles-EPS corona increases the accumulation of heavy metals and biotoxicity of nanoparticles. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124526. [PMID: 33218909 DOI: 10.1016/j.jhazmat.2020.124526] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 11/07/2020] [Accepted: 11/07/2020] [Indexed: 05/25/2023]
Abstract
Microbial extracellular polymeric substances (EPS) coating nanoparticles (NPs) surface can form NPs-EPS corona, which significantly affect the adsorption of NPs to toxic substances and alter the ecotoxicological effect of NPs. In this work, the EPS coronas on TiO2 NPs (TNPs) and CeO2 NPs (CNPs) were characterized and the adsorption characteristics of NPs with and without EPS corona to five heavy metals were investigated in single-metal and multiple-metal systems. The results of spectral analysis showed that NPs-EPS corona exhibited new crystalline phases and abundant functional groups. Moreover, 42 and 13 proteins were identified in the TNPs-EPS and CNPs-EPS coronas, respectively. The rates of Cd2+, Pb2+, Cu2+, Ni2+ and Ag+ adsorption by NPs-EPS corona increased to values that were 6.7-7.6, 4.4-5.1, 4.2-5.5, 3.9-4.9 and 8.5-8.8 times those of NPs without EPS corona, respectively, in single-metal system. NPs-EPS coronas are effective in absorbing Ag+, Pb2+ and Cu2+ compared with Cd2+and Ni2+ in multiple metal adsorption. These results indicated that NPs-EPS corona effectively adsorb and remove heavy metals by forming NPs-EPS-metal complexes and inducing precipitation. However, NPs-EPS corona can enhance the toxicity of NPs by accumulating highly-toxic heavy metals in aquatic environments.
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Affiliation(s)
- Peng Zhang
- College of Environment and Resources, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Xiao-Yan Xu
- College of Environment and Resources, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Xue-Lin Zhang
- Cotton Sciences Research Institute of Hunan, Changde 415101, Hunan, China
| | - Kui Zou
- College of Environment and Resources, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Bing-Zhi Liu
- Faculty of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
| | - Tai-Ping Qing
- College of Environment and Resources, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Bo Feng
- College of Environment and Resources, Xiangtan University, Xiangtan 411105, Hunan, China.
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22
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Huang T, Song D, Chen X, Cao J, Jin JX, Liu W, Zhang SW, Liu LF, Yang CH, Zhou L, Xu J. A green rust-coated expanded perlite particle electrode-based adsorption coupling with the three-dimensional electrokinetics that enhances hexavalent chromium removal. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 213:112003. [PMID: 33588188 DOI: 10.1016/j.ecoenv.2021.112003] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/23/2021] [Accepted: 01/26/2021] [Indexed: 06/12/2023]
Abstract
A green rust-coated expanded perlite (GR-coated Exp-p) microelectrode was synthesized and incorporated into a column-mode three-dimensional electrokinetic (3D-EK) platform to effectively pursue a continuous Cr(VI) removal from the aqueous solution. Brucite-like layers of GR were decorated onto the Exp-p material. The molar ratio of Fe(II) to Fe(III) played a most vital role among the three synthesis factors in influencing the performance of the particle electrode. For the equilibrium adsorption experiments, the target maximum adsorption capacity of 122 mg/g was predicted by a target optimizer and desirability function at the conditions following the pH of 4.7, the initial concentration of 172.4 mg/L, the dosage of 0.28 g/L, and the temperature of 28.96 °C, respectively. SO42-, Cl-, and NO3- fiercely competed with Cr(VI) anions in the acidic conditions for the locally positive sites. A low concentration and a slow flow were favored in the column-mode 3D-EK platform. The pseudo-first-order and Langmuir models were suitable for describing the kinetics and isotherms of the adsorption process, respectively. Cr(VI) anions were electrostatically attracted to the silanol groups and GR surface of the adsorbent, subsequently reduced in both heterogeneity and homogeneity, and finally immobilized by coordinating with silanediol groups and silanetriol groups.
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Affiliation(s)
- Tao Huang
- School of Chemistry and Materials Engineering, Changshu Institute of Technology, No. 99, South 3rd Ring Road, Changshu 215500, China; Suzhou Key Laboratory of Functional Ceramic Materials, Changshu Institute of Technology, Changshu 215500, China; School of Chemical Engineering & Technology, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
| | - Dongping Song
- School of Chemistry and Materials Engineering, Changshu Institute of Technology, No. 99, South 3rd Ring Road, Changshu 215500, China.
| | - Xiangping Chen
- School of Chemistry and Materials Engineering, Changshu Institute of Technology, No. 99, South 3rd Ring Road, Changshu 215500, China
| | - Jun Cao
- School of Chemistry and Materials Engineering, Changshu Institute of Technology, No. 99, South 3rd Ring Road, Changshu 215500, China
| | - Jun-Xun Jin
- School of Chemistry and Materials Engineering, Changshu Institute of Technology, No. 99, South 3rd Ring Road, Changshu 215500, China
| | - Wanhui Liu
- School of Chemistry and Materials Engineering, Changshu Institute of Technology, No. 99, South 3rd Ring Road, Changshu 215500, China; Suzhou Key Laboratory of Functional Ceramic Materials, Changshu Institute of Technology, Changshu 215500, China
| | - Shu-Wen Zhang
- Nuclear Resources Engineering College, University of South China, 421001, China
| | - Long-Fei Liu
- School of Chemistry and Materials Engineering, Changshu Institute of Technology, No. 99, South 3rd Ring Road, Changshu 215500, China; Suzhou Key Laboratory of Functional Ceramic Materials, Changshu Institute of Technology, Changshu 215500, China
| | - Chun-Hai Yang
- School of Chemistry and Materials Engineering, Changshu Institute of Technology, No. 99, South 3rd Ring Road, Changshu 215500, China; Suzhou Key Laboratory of Functional Ceramic Materials, Changshu Institute of Technology, Changshu 215500, China
| | - Lulu Zhou
- School of Chemistry and Materials Engineering, Changshu Institute of Technology, No. 99, South 3rd Ring Road, Changshu 215500, China
| | - Jiaojiao Xu
- School of Chemistry and Materials Engineering, Changshu Institute of Technology, No. 99, South 3rd Ring Road, Changshu 215500, China
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23
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Mpouras T, Polydera A, Dermatas D, Verdone N, Vilardi G. Multi wall carbon nanotubes application for treatment of Cr(VI)-contaminated groundwater; Modeling of batch & column experiments. CHEMOSPHERE 2021; 269:128749. [PMID: 33272668 DOI: 10.1016/j.chemosphere.2020.128749] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/17/2020] [Accepted: 10/23/2020] [Indexed: 06/12/2023]
Abstract
Multi wall carbon nanotubes (MWCNTs) are carbonaceous nanomaterials with novel adsorption properties. In this study MWCNTs were used as adsorbents for hexavalent chromium, Cr(VI), and the influence of operating parameters, on adsorption process, such as pH, MWCNTs and Cr(VI) concentration, and contact time have been investigated. Batch and column experiments were carried out in order to investigate the removal efficiency of MWCNTs for different Cr(VI) concentrations related to groundwater polluted by either anthropogenic activities or by geogenic processes. The experimental results showed that pH was the most crucial factor for adsorption efficiency. Cr(VI) adsorption was inversely proportional with pH value and more specifically adsorption was significantly decreased for pH values higher than 7. The effect of adsorbent's concentration showed the high adsorption capacity of MWCNTs. The adsorption process was very fast since was almost completed within 1 h. Different isotherm models have been adopted to interpret the experimental equilibrium data, as well as two mass-transfer based model were used to describe the dynamic behavior of Cr(VI) sorption phenomenon in column experiments.
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Affiliation(s)
- Thanasis Mpouras
- School of Civil Engineering, Department of Water Resources and Environmental Engineering, National Technical University of Athens, Iroon Polytechniou 9, 15780, Zografou, Athens, Greece.
| | - Angeliki Polydera
- School of Civil Engineering, Department of Water Resources and Environmental Engineering, National Technical University of Athens, Iroon Polytechniou 9, 15780, Zografou, Athens, Greece
| | - Dimitris Dermatas
- School of Civil Engineering, Department of Water Resources and Environmental Engineering, National Technical University of Athens, Iroon Polytechniou 9, 15780, Zografou, Athens, Greece
| | - Nicola Verdone
- Department of Chemical Materials Environmental Engineering, 'La Sapienza' University of Rome, Rome, Italy
| | - Giorgio Vilardi
- Department of Chemical Materials Environmental Engineering, 'La Sapienza' University of Rome, Rome, Italy
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24
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Hu Y, Chen N, Liu T, Feng C, Ma L, Chen S, Li M. The mechanism of nitrate-Cr(VI) reduction mediated by microbial under different initial pHs. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122434. [PMID: 32135365 DOI: 10.1016/j.jhazmat.2020.122434] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 02/28/2020] [Accepted: 02/28/2020] [Indexed: 06/10/2023]
Abstract
To date, comparatively little research is known about the role of pH conditions in bioremediation of Cr(VI) contaminated aquifers. This study explored microbial Cr(VI) reduction and denitrification under different initial pHs. The underlying mechanism was also investigated. When testing 50 mg/L-N nitrate and 10 mg/L Cr(VI), complete contaminants removal was observed at initial pH 10.0 and 11.0, and only 10 %-30 % of removal achieved under other conditions, which might be ascribe to the significant up-regulation of functional genes narG (8.31 and 10.46 folds) and azoR (24.90 and 15.96 folds) at initial pH 10.0 and 11.0. Metagenomic sequencing showed that alkali tolerant bacteria played major roles in the NO3--Cr(VI) reduction (i.e. Pannonibacter increased by 13.08 % and 25.24 % at initial pH 10.0 and 11.0), and metabolic pathways of Degradation and Energy were found of increased abundant. Furthermore, a significative study suggested that potential interspecies cooperation existed at initial pH 11.0 to facilitating the simultaneous removal of contaminants, and Pannonibacter indicus might be an important participant in the degradation of contaminants. The results of this study will fully understand the metabolic patterns of bacteria under alkaline conditions, expand the range of available functional bacteria, and enhance the practical aspects of co-contaminants remediation.
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Affiliation(s)
- Yutian Hu
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Nan Chen
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China.
| | - Tong Liu
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Chuanping Feng
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Linlin Ma
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Si Chen
- School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, PR China
| | - Miao Li
- School of Environment, Tsinghua University, Beijing, 100084, PR China
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