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Saravanan P, Saravanan V, Rajeshkannan R, Arnica G, Rajasimman M, Baskar G, Pugazhendhi A. Comprehensive review on toxic heavy metals in the aquatic system: sources, identification, treatment strategies, and health risk assessment. ENVIRONMENTAL RESEARCH 2024; 258:119440. [PMID: 38906448 DOI: 10.1016/j.envres.2024.119440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 05/08/2024] [Accepted: 06/17/2024] [Indexed: 06/23/2024]
Abstract
Heavy metal pollution in water sources has become a major worldwide environmental issue, posing a threat to aquatic ecosystems and human health. The pollution of the aquatic environment is increasing as a result of industrialization, climate change, and urban development. The sources of heavy metal pollution in water include mining waste, leachates from landfills, municipal and industrial wastewater, urban runoff, and natural events such as volcanism, weathering, and rock abrasion. Heavy metal ions are toxic and potentially carcinogenic. They can also buildup in biological systems and cause bioaccumulation even at low levels of exposure, heavy metals can cause harm to organs such as the nervous system, liver and lungs, kidneys and stomach, skin, and reproductive systems. There were various approaches tried to purify water and maintain water quality. The main purpose of this article was to investigate the occurrence and fate of the dangerous contaminants (Heavy metal and metalloids) found in domestic and industrial effluents. This effluent mixes with other water streams and is used for agricultural activities and other domestic activities further complicating the issue. It also discussed conventional and non-conventional treatment methods for heavy metals from aquatic environments. Conclusively, a pollution assessment of heavy metals and a human health risk assessment of heavy metals in water resources have been explained. In addition, there have been efforts to focus on heavy metal sequestration from industrial waste streams and to create a scientific framework for reducing heavy metal discharges into the aquatic environment.
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Affiliation(s)
- Panchamoorthy Saravanan
- Department of Petrochemical Technology, UCE - BIT Campus, Anna University, Tiruchirappalli, Tamil Nadu, 620024, India.
| | - V Saravanan
- Department of Chemical Engineering, Annamalai University, Chidambaram, Tamil Nadu, 608002, India
| | - R Rajeshkannan
- Department of Chemical Engineering, Annamalai University, Chidambaram, Tamil Nadu, 608002, India
| | - G Arnica
- Department of Petrochemical Technology, UCE - BIT Campus, Anna University, Tiruchirappalli, Tamil Nadu, 620024, India
| | - M Rajasimman
- Department of Chemical Engineering, Annamalai University, Chidambaram, Tamil Nadu, 608002, India
| | - Gurunathan Baskar
- Department of Biotechnology, St. Joseph's College of Engineering, Chennai, 600119, Tamil Nadu, India; School of Engineering, Lebanese American University, Byblos, 1102 2801, Lebanon
| | - Arivalagan Pugazhendhi
- Tecnologico de Monterrey, Centre of Bioengineering, NatProLab, Plant Innovation Lab, School of Engineering and Sciences, Queretaro 76130, Mexico; Centre for Herbal Pharmacology and Environmental Sustainability, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam-603103, Tamil Nadu, India.
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Pei X, Gao H, Shang C, Huang J, Ge M, Xie H, Feng Y, Wang B. One-step synthesis of phytic acid-assisted hydrochar boost selective sorption and in situ passivation of lanthanum. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170419. [PMID: 38296091 DOI: 10.1016/j.scitotenv.2024.170419] [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: 08/16/2023] [Revised: 12/16/2023] [Accepted: 01/22/2024] [Indexed: 02/03/2024]
Abstract
The rare earth metal element lanthanum (La) possesses carcinogenic, genotoxic, and accumulative properties, necessitating urgent development of an efficient and cost-effective method to remove La. However, current sorbents still encounter challenges such as poor selectivity, low sorption capacity, and high production costs. This study therefore proposes a promising solution: the creation of phytic acid-assisted sludge hydrochars (P-SHCs) to eliminate La from water and soil environments. This method harnesses phytic acid's exceptional binding ability and the economical hydrothermal carbonization process. P-SHCs exhibit robust sorption affinity, fast sorption kinetics, and excellent sorption selectivity for La when compared with pristine hydrochars (SHCs). This advantage arises from the remarkable binding ability of phosphate functional groups (polyphosphates) on P-SHCs, forming P-O-La complexes. Moreover, P-SHCs demonstrate sustained sorption efficiency across at least five cycles, with a slight decrease attributed to the loss of phosphorus species and mass during recycling. Furthermore, P-SHCs demonstrated superior economic feasibility, with a higher estimated cost-benefit ratio than that of other sorbents. Our study further validates the exceptional passivation capability of P-SHCs, showcasing relative stabilization efficiency ranging from 37.6 % to 79.6 % for La contamination. Additionally, acting as soil passivation agents, P-SHCs foster the enrichment of specific soil microorganisms such as Actinobacteria and Proteobacteria, capable of solubilizing phosphorus and resisting heavy metals. These findings present novel ideas and technical support for employing P-SHCs in combatting environmental pollution stemming from rare earth metals.
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Affiliation(s)
- Xiaodong Pei
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Hailong Gao
- Jiangsu Provincial Assessment Center of Ecology and Environment, Nanjing 210036, China
| | - Cenyao Shang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Junxia Huang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Mengting Ge
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Huifang Xie
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yanfang Feng
- Key Laboratory of Agro-Environment in Downstream of Yangtze Plain, National Agricultural Experiment Station for Agricultural Environment, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Bingyu Wang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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Rai PK, Nongtri ES. Heavy metals/-metalloids (As) phytoremediation with Landoltia punctata and Lemna sp. (duckweeds): coupling with biorefinery prospects for sustainable phytotechnologies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:16216-16240. [PMID: 38334920 DOI: 10.1007/s11356-024-32177-5] [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: 08/25/2023] [Accepted: 01/20/2024] [Indexed: 02/10/2024]
Abstract
Heavy metals/-metalloids can result in serious human health hazards. Phytoremediation is green bioresource technology for the remediation of heavy metals and arsenic (As). However, there exists a knowledge gap and systematic information on duckweed-based metal phytoremediation in an eco-sustainable way. Therefore, the present review offers a critical discussion on the effective use of duckweeds (genera Landoltia and Lemna)-based phytoremediation to decontaminate metallic contaminants from wastewater. Phytoextraction and rhizofiltration were the major mechanism in 'duckweed bioreactors' that can be dependent on physico-chemical factors and plant-microbe interactions. The biotechnological advances such as gene manipulations can accelerate the duckweed-based phytoremediation process. High starch and protein contents of the metal-loaded duckweed biomass facilitate their use as feedstock in biorefinery. Biorefinery prospects such as bioenergy production, value-added products, and biofertilizers can augment the circular economy approach. Coupling duckweed-based phytoremediation with biorefinery can help achieve Sustainable Development Goals (SDGs) and human well-being.
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Affiliation(s)
- Prabhat Kumar Rai
- Department of Environmental Science, Mizoram University (A Central University), Aizawl, 796004, India.
| | - Emacaree S Nongtri
- Department of Environmental Science, Mizoram University (A Central University), Aizawl, 796004, India
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Hellmann S, García-Cancela P, Alonso-Fernández S, Corte-Rodríguez M, Bettmer J, Manteca A, Merten D, Gil-Díaz T, Schäfer T, Montes-Bayón M. Single cell ICP-MS to evaluate the interaction behaviour for Cd, Ce and U with Streptomyces coelicolor spores. CHEMOSPHERE 2024; 347:140633. [PMID: 37951404 DOI: 10.1016/j.chemosphere.2023.140633] [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: 08/30/2023] [Revised: 11/03/2023] [Accepted: 11/05/2023] [Indexed: 11/14/2023]
Abstract
Streptomyces are important soil bacteria used for bioremediation of metal-contaminated soils, however, it is still unknown how metal-selective Streptomyces are and which mechanisms are involved during their capture. In this work, we exposed S. coelicolor spores to environmentally relevant concentrations (0.1, 1, 10, 100 μM) of Ce, U and Cd in solid medium for one week to investigate the uptake behaviour of hyphae in the newly formed spores. Additionally, metal adsorption onto the spores was explored by incubating inactive, ungerminated spores for one day in aqueous metal solution. The spore-washing treatment was key to distinguishing between strongly spore-associated (e.g. incorporation; Tris-EDTA buffer) and weakly spore-associated metals (Tris buffer alone minus Tris-EDTA). Single cell (sc) ICP-MS was used to quantify metal-associated content in individual spores. Our results revealed element-specific adsorption onto inactive spores showing that out of the total metal exposure, both strongly (Ce: 58%; U: 54%; Cd: 28%) and weakly (Ce: 12%; U: 1%; Cd: 18%) adsorbed metals occur. However, scICP-MS showed that from metal-amended solid medium, only Ce and U were strongly spore-associated (averages 0.040 and 0.062 fg spore-1 for 10 μM exposures, respectively) while Cd was below the limit of detection (< 0.006 fg spore-1). We propose that hyphae only metabolically interact with Ce in a controlled manner but uncontrolled with U, as 66-73% Ce and only 2-4% U were inherited from adsorbed content. We conclude that Streptomyces spore-metal interaction starts with a relevant adsorption step of Ce, U and Cd as presented for aqueous conditions. If spores start to germinate, hyphae are capable of effectively encapsulating Ce and U, but not Cd. This study brings light into the still unknown field of metal interactions with Streptomyces and applied understanding for more efficient and metal-specific use of Streptomyces in bioremediation of metal-polluted soils.
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Affiliation(s)
- Steffen Hellmann
- Institute of Geosciences, Friedrich Schiller University Jena, Burgweg 11, 07749, Jena, Germany; International Max Planck Research School for Global Biogeochemical Cycles, Max Planck Institute for Biogeochemistry, Department of Biogeochemical Processes, Hans-Knöll-Straße 10, 07745, Jena, Germany
| | - Paula García-Cancela
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, Julian Clavería 8, 33006, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Av. Del Hospital Universitario s/n, 33011, Oviedo, Spain
| | - Sergio Alonso-Fernández
- Área de Microbiología, Departamento de Biología Funcional, IUOPA and ISPA, Facultad de Medicina, Universidad de Oviedo, 33006, Oviedo, Spain
| | - Mario Corte-Rodríguez
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, Julian Clavería 8, 33006, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Av. Del Hospital Universitario s/n, 33011, Oviedo, Spain
| | - Jörg Bettmer
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, Julian Clavería 8, 33006, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Av. Del Hospital Universitario s/n, 33011, Oviedo, Spain
| | - Angel Manteca
- Área de Microbiología, Departamento de Biología Funcional, IUOPA and ISPA, Facultad de Medicina, Universidad de Oviedo, 33006, Oviedo, Spain
| | - Dirk Merten
- Institute of Geosciences, Friedrich Schiller University Jena, Burgweg 11, 07749, Jena, Germany
| | - Teba Gil-Díaz
- Institute of Applied Geosciences (AGW), Karlsruhe Institute of Technology (KIT), Adenauerring 20b, 76131, Karlsruhe, Germany
| | - Thorsten Schäfer
- Institute of Geosciences, Friedrich Schiller University Jena, Burgweg 11, 07749, Jena, Germany.
| | - María Montes-Bayón
- Department of Physical and Analytical Chemistry, Faculty of Chemistry, Julian Clavería 8, 33006, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Av. Del Hospital Universitario s/n, 33011, Oviedo, Spain.
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Chwastowski J, Guzik M, Bednarz S, Staroń P. Upcycling Waste Streams from a Biorefinery Process-A Case Study on Cadmium and Lead Biosorption by Two Types of Biopolymer Post-Extraction Biomass. Molecules 2023; 28:6345. [PMID: 37687174 PMCID: PMC10488894 DOI: 10.3390/molecules28176345] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
This study investigated the possibility of using the spent kind of biomass of Pseudomonas putida CA-3 and Zobelella denitrificans MW1 obtained after the pilot-scale production of polyhydroxyalkanoates (PHAs) as a biosorbent for the bioremediation of aqueous solutions containing toxic cadmium and lead ions. The material was characterized by means of scanning electron microscopy, Fourier-transformed infrared spectroscopy, nuclear magnetic resonance spectroscopy and amino acid profiling. To check the sorption capacity of spent biomass against Pb and Cd ions, equilibrium studies were performed. To learn about the nature of the sorption process, kinetic modelling was carried out and the obtained results showed that the adsorption process is best described by the pseudo-second-order kinetic model (PSO), which suggests that the sorption process is connected with the chemical bonding of the ions on the sorbent surface. Information provided by the amino acid profile made it possible to predict the adsorption mechanism and FTIR analysis proved the participation of different chemical groups in the removal process. According to the equilibrium studies, the best-fitted isotherm was the Freundlich model for all used materials and metal ions considering the correlation coefficient. Summarizing the results, the spent biomass after the PHA production is an effective biosorbent and can be reused for heavy metal bioremediation.
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Affiliation(s)
- Jarosław Chwastowski
- Department of Engineering and Chemical Technology, Kraków University of Technology, 24 Warszawska St., 31-155 Kraków, Poland; (S.B.); (P.S.)
| | - Maciej Guzik
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland;
| | - Szczepan Bednarz
- Department of Engineering and Chemical Technology, Kraków University of Technology, 24 Warszawska St., 31-155 Kraków, Poland; (S.B.); (P.S.)
| | - Paweł Staroń
- Department of Engineering and Chemical Technology, Kraków University of Technology, 24 Warszawska St., 31-155 Kraków, Poland; (S.B.); (P.S.)
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Behera S, Das S. Potential and prospects of Actinobacteria in the bioremediation of environmental pollutants: Cellular mechanisms and genetic regulations. Microbiol Res 2023; 273:127399. [PMID: 37150049 DOI: 10.1016/j.micres.2023.127399] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 04/22/2023] [Accepted: 04/30/2023] [Indexed: 05/09/2023]
Abstract
Increasing industrialization and anthropogenic activities have resulted in the release of a wide variety of pollutants into the environment including pesticides, polycyclic aromatic hydrocarbons (PAHs), and heavy metals. These pollutants pose a serious threat to human health as well as to the ecosystem. Thus, the removal of these compounds from the environment is highly important. Mitigation of the environmental pollution caused by these pollutants via bioremediation has become a promising approach nowadays. Actinobacteria are a group of eubacteria mostly known for their ability to produce secondary metabolites. The morphological features such as spore formation, filamentous growth, higher surface area to volume ratio, and cellular mechanisms like EPS secretion, and siderophore production in Actinobacteria render higher resistance and biodegradation ability. In addition, these bacteria possess several oxidoreductase systems (oxyR, catR, furA, etc.) which help in bioremediation. Actinobacteria genera including Arthrobacter, Rhodococcus, Streptomyces, Nocardia, Microbacterium, etc. have shown great potential for the bioremediation of various pollutants. In this review, the bioremediation ability of these bacteria has been discussed in detail. The utilization of various genera of Actinobacteria for the biodegradation of organic pollutants, including pesticides and PAHs, and inorganic pollutants like heavy metals has been described. In addition, the cellular mechanisms in these microbes which help to withstand oxidative stress have been discussed. Finally, this review explores the Actinobacteria mediated strategies and recent technologies such as the utilization of mixed cultures, cell immobilization, plant-microbe interaction, utilization of biosurfactants and nanoparticles, etc., to enhance the bioremediation of various environmental pollutants.
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Affiliation(s)
- Shivananda Behera
- Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela 769 008, Odisha, India
| | - Surajit Das
- Laboratory of Environmental Microbiology and Ecology (LEnME), Department of Life Science, National Institute of Technology, Rourkela 769 008, Odisha, India.
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Dell'Anno F, Joaquim van Zyl L, Trindade M, Buschi E, Cannavacciuolo A, Pepi M, Sansone C, Brunet C, Ianora A, de Pascale D, Golyshin PN, Dell'Anno A, Rastelli E. Microbiome enrichment from contaminated marine sediments unveils novel bacterial strains for petroleum hydrocarbon and heavy metal bioremediation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 317:120772. [PMID: 36455775 DOI: 10.1016/j.envpol.2022.120772] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/24/2022] [Accepted: 11/26/2022] [Indexed: 06/17/2023]
Abstract
Petroleum hydrocarbons and heavy metals are some of the most widespread contaminants affecting marine ecosystems, urgently needing effective and sustainable remediation solutions. Microbial-based bioremediation is gaining increasing interest as an effective, economically and environmentally sustainable strategy. Here, we hypothesized that the heavily polluted coastal area facing the Sarno River mouth, which discharges >3 tons of polycyclic aromatic hydrocarbons (PAHs) and ∼15 tons of heavy metals (HMs) into the sea annually, hosts unique microbiomes including marine bacteria useful for PAHs and HMs bioremediation. We thus enriched the microbiome of marine sediments, contextually selecting for HM-resistant bacteria. The enriched mixed bacterial culture was subjected to whole-DNA sequencing, metagenome-assembled-genomes (MAGs) annotation, and further sub-culturing to obtain the major bacterial species as pure strains. We obtained two novel isolates corresponding to the two most abundant MAGs (Alcanivorax xenomutans strain-SRM1 and Halomonas alkaliantarctica strain-SRM2), and tested their ability to degrade PAHs and remove HMs. Both strains exhibited high PAHs degradation (60-100%) and HMs removal (21-100%) yield, and we described in detail >60 genes in their MAGs to unveil the possible genetic basis for such abilities. Most promising yields (∼100%) were obtained towards naphthalene, pyrene and lead. We propose these novel bacterial strains and related genetic repertoire to be further exploited for effective bioremediation of marine environments contaminated with both PAHs and HMs.
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Affiliation(s)
- Filippo Dell'Anno
- Department of Marine Biotechnology, Stazione Zoologica "Anton Dohrn", Villa Comunale, 80121, Naples, Italy.
| | - Leonardo Joaquim van Zyl
- Department of Biotechnology, Institute for Microbial Biotechnology and Metagenomics, University of the Western Cape, Bellville, 7535, Cape Town, South Africa.
| | - Marla Trindade
- Department of Biotechnology, Institute for Microbial Biotechnology and Metagenomics, University of the Western Cape, Bellville, 7535, Cape Town, South Africa.
| | - Emanuela Buschi
- Department of Marine Biotechnology, Stazione Zoologica "Anton Dohrn", Fano Marine Centre, Viale Adriatico 1-N, 61032, Fano, Italy.
| | - Antonio Cannavacciuolo
- Department of Integrative Marine Ecology, Stazione Zoologica "Anton Dohrn", Fano Marine Centre, Viale Adriatico 1-N, 61032, Fano, Italy.
| | - Milva Pepi
- Department of Integrative Marine Ecology, Stazione Zoologica "Anton Dohrn", Fano Marine Centre, Viale Adriatico 1-N, 61032, Fano, Italy.
| | - Clementina Sansone
- Department of Marine Biotechnology, Stazione Zoologica "Anton Dohrn", Villa Comunale, 80121, Naples, Italy.
| | - Christophe Brunet
- Department of Marine Biotechnology, Stazione Zoologica "Anton Dohrn", Villa Comunale, 80121, Naples, Italy.
| | - Adrianna Ianora
- Department of Marine Biotechnology, Stazione Zoologica "Anton Dohrn", Villa Comunale, 80121, Naples, Italy.
| | - Donatella de Pascale
- Department of Marine Biotechnology, Stazione Zoologica "Anton Dohrn", Villa Comunale, 80121, Naples, Italy.
| | - Peter N Golyshin
- Centre for Environmental Biotechnology, School of Natural Sciences, Bangor University, Gwynedd LL57 2UW, UK.
| | - Antonio Dell'Anno
- Department of Life and Environmental Sciences, Università Politecnica Delle Marche, Via Brecce Bianche, 60131, Ancona, Italy.
| | - Eugenio Rastelli
- Department of Marine Biotechnology, Stazione Zoologica "Anton Dohrn", Fano Marine Centre, Viale Adriatico 1-N, 61032, Fano, Italy.
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8
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Zhang T, Zhang H. Electrochemical analysis for the rapid screening of copper-tolerant bacteria. Bioelectrochemistry 2022; 148:108276. [DOI: 10.1016/j.bioelechem.2022.108276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/15/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022]
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9
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da Silva LJ, Figueredo CC. Algae as biosorption agents for recovering environments contaminated by trace metals: an overview of a potentially useful tool for mine disasters in Brazil. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01189-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Mei C, Wang H, Cai K, Xiao R, Xu M, Li Z, Zhang Z, Cui J, Huang F. Characterization of soil microbial community activity and structure for reducing available Cd by rice straw biochar and Bacillus cereus RC-1. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 839:156202. [PMID: 35623534 DOI: 10.1016/j.scitotenv.2022.156202] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 05/11/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
The combination of biochar and specific bacteria has been widely applied to remediate Cadmium-contaminated soil. But little is known about how such composites affect the dynamic distribution of metal fractions. This process is accompanied by the alternations of soil properties and microbial community structures. Composite of rice straw biochar and Bacillus cereus RC-1 were applied to investigate its impacts on Cd alleviation and soil microbial diversity and structure. The bacterial/biochar composite treatment decreased the fraction of HOAc-extractable Cd by 38.82%, and increased residual Cd by 23.95% compared to the untreated control. Moreover, compared with the untreated control, the composite treatment significantly increased the soil pH by about 1.5 units, and the activities of catalase, urease and invertase enzymes were increased by 42.39%, 30.50% and 31.20%, respectively. Composite treatment increased soil bacterial and fungal alpha diversity, the relative abundance of Bacillus, Streptomyces, Arthrobacter, and Aspergillus species were also increased. Mantel test and correlation analysis indicated that the effects associated with fungal communities in influencing soil properties were lower than that those of bacterial communities by different treatment. Aggregated boosted tree (ABT) models analysis showed that soil chemical proprieties (as determined by SOM, CEC, AN, etc.,) contributed over 50% of the changes in bacterial and fungal communities by the composite treatment. The co-occurrence network results showed that all treatments enhanced the correlation between OUT groups and improved the possible relationships in the bacterial and fungal communities, especially the interrelationships between bacteria and fungi after the Cd fractions stabilized. These findings provide a new insight to optimal strategies for the remediation of Cd-contaminated soil.
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Affiliation(s)
- Chuang Mei
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China
| | - Heng Wang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - Kunzheng Cai
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China
| | - Rongbo Xiao
- Guangdong Industrial Contaminated Site Remediation Technology and Equipment Engineering Research Center, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
| | - Meili Xu
- Guangdong Industrial Contaminated Site Remediation Technology and Equipment Engineering Research Center, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Zishan Li
- Guangdong Industrial Contaminated Site Remediation Technology and Equipment Engineering Research Center, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Zhenyan Zhang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China
| | - Jingyi Cui
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China
| | - Fei Huang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Industrial Contaminated Site Remediation Technology and Equipment Engineering Research Center, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China.
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11
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Jyoti D, Sinha R, Faggio C. Advances in biological methods for the sequestration of heavy metals from water bodies: A review. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 94:103927. [PMID: 35809826 DOI: 10.1016/j.etap.2022.103927] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/26/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Pollution is a major concern of the modern era as it affects all the principal aspects of the environment, especially the hydrosphere. Pollution with heavy metals has unequivocally threatened aquatic bodies and organisms as these metals are persistent, non-biodegradable, and toxic. Heavy metals tend to accumulate in the environment and eventually in humans, which makes their efficient removal a topic of paramount importance. Treatment of metal-contaminated water can be done both via chemical and biological methods. Where remediation through conventional methods is expensive and generates a large amount of sludge, biological methods are favoured over older and prevalent chemical purification processes because they are cheaper and environment friendly. The present review attempts to summarise effective methods for the remediation of water contaminated with heavy metals. We concluded that in biological techniques, bio-sorption is among the most employed and successful mechanisms because of its high efficacy and eco-friendly nature.
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Affiliation(s)
- Divya Jyoti
- School of Biological and Environmental Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, HP 173 229, India.
| | - Reshma Sinha
- Department of Animal Science, School of Life Sciences, Central University of Himachal Pradesh, Kangra, Himachal Pradesh, 176206, India.
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy.
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12
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Liu J, Zhu C, Li Z, Zhou H. Screening of Spirulina strains for high copper adsorption capacity through Fourier transform infrared spectroscopy. Front Microbiol 2022; 13:952597. [PMID: 35966670 PMCID: PMC9372389 DOI: 10.3389/fmicb.2022.952597] [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: 05/25/2022] [Accepted: 07/07/2022] [Indexed: 11/18/2022] Open
Abstract
Microalgae have emerged as promising biosorbents for the removal of toxic metals from industrial effluents due to the presence of various free functional groups. While the constitutes are distinct among different algal strains, it needs to screen the algae with high adsorption capacities for heavy metal ions by analyzing the algal components. In this study, a rapid and nondestructive Fourier transform infrared (FTIR) method combined PCA algorithm was used to discriminate algal strains according to their cellular components. With FTIR spectroscopy, we have found that the algal strains for high copper adsorption capacity (RH44, XS58, AH53, and RZ22) can be well differentiated from other strains via assessing the components involved in the biosorption of copper ions at the spectral window range of 1,200–900 cm−1 mainly attributed to polysaccharides. Correspondingly, the copper removal efficiency by different Spirulina strains was also measured by biochemical assay and scanning electron microscopy (SEM) in order to confirm the screening result. Compared with the chemical measurement, the assessment based on spectral features appears fairly good in the evaluation and differentiation of copper adsorption capacity in various Spirulina strains. This study illustrates that FTIR spectroscopy may serve as a fast and effective tool to investigate the functional groups for copper ions binding in the Spirulina cell and it even offers a useful and accurate new approach to rapidly assess potential adsorbents for the high capacity of copper adsorption.
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Affiliation(s)
- Jinghua Liu
- College of Agriculture and Bioengineering, Heze University, Heze, China
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, China
| | - Changwei Zhu
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, China
| | - Zhengpeng Li
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, China
| | - Haoyuan Zhou
- School of Public Administration, Shandong Technology and Business University, Yantai, China
- *Correspondence: Haoyuan Zhou
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13
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Ozdemir S, Kılınç E, Acer Ö, Soylak M. Preconcentrations of Zn(II) and Hg(II) in Environmental and Food Samples by SPE on B. licheniformis Loaded Amberlite XAD-4. Biol Trace Elem Res 2022; 200:1972-1980. [PMID: 34729695 DOI: 10.1007/s12011-021-03000-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 10/26/2021] [Indexed: 10/19/2022]
Abstract
In this work, the separations and preconcentrations of Zn(II) and Hg(II) ions on Bacillus lichenifoemis loaded onto Amberlite XAD-4 resin by solid-phase extraction has been performed. The biosorbent was characterized by using FT-IR, SEM, and EDX. pH, sample flow rate, eluent type and concentration, amount of B. licheniformis and XAD-4 resin, sample volume, and possible interfering ions effect were investigated in details as experimental variables in the SPE procedure. Limit of detection values for Zn(II) and Hg(II) were detected as 0.03 and 0.06 ng mL-1, respectively. 0.2-15 ng mL-1 linear range values were achieved for Zn(II) and Hg(II), respectively. Relative standard deviation values were found to be lower than 5%. For validation of the procedure, the certified standard reference materials (CWW-TM-D, EU-L-2, NCS ZC73O14, NCS ZC73350) were analyzed. The concentrations of Zn(II) and Hg(II) in water and food samples were measured by ICP-OES. Consequently, it can be inferred that the immobilized B. licheniformis microcolumn has ideal selectivity for Zn(II) and Hg(II) biosorption.
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Affiliation(s)
- Sadin Ozdemir
- Food Processing Programme, Technical Science Vocational School, Mersin University, 33343, Mersin, Turkey
| | - Ersin Kılınç
- Department of Chemistry and Chemical Processing Technologies, Vocational School of Technical Sciences, Dicle University, 21280, Diyarbakır, Turkey
| | - Ömer Acer
- Department of Medical Microbiology, Faculty of Medicine, Siirt University, 56100, Siirt, Turkey.
| | - Mustafa Soylak
- Department of Chemistry, Faculty of Sciences, Erciyes University, 38030, Kayseri, Turkey
- Technology Research & Application Center (TAUM), Erciyes University, 38039, Kayseri, Turkey
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14
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Dutta D, Arya S, Kumar S. Industrial wastewater treatment: Current trends, bottlenecks, and best practices. CHEMOSPHERE 2021; 285:131245. [PMID: 34246094 DOI: 10.1016/j.chemosphere.2021.131245] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 05/12/2021] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
Rapid urbanization and industrialization have inextricably linked to water consumption and wastewater generation. Mining resources from industrial wastewater has proved to be an excellent source of secondary raw materials i.e., proficient for providing economic and financial benefits, clean and sustainable resilient environment, and achieving sustainable development goals (SDGs). Treatment of industrial wastewater for reusable resources has become a tedious task for decision-makers due to several bottlenecks and barriers, such as inefficient treatment options, high-cost expenditure, poor infrastructure, lack of financial support, and technical know-how. Most of the existing methods are conventional and fails to provide an economic benefit to the industries and have certain disadvantages. Also, the untreated industrial wastewater is discharged into the open drains, lakes, and rivers that lead to environmental pollution and severe health hazards. This paper has consolidated information about the current trends, opportunities, bottlenecks, and best practices associated with wastewater treatment and scope for the advancement in the existing technologies. Along with the efficient resource recovery, the wastewater could be ideally explored in the development of value-added materials, energy, and product recovery. The concepts, such as the circular economy (CE), partitions-release-recover (PRR), and transforming wastewater into bio factory are anticipated to be more convenient options to tackle the industrial wastewater menace.
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Affiliation(s)
- Deblina Dutta
- School of Environmental Science & Engineering, Indian Institute of Technology Kharagpur, 721 302, India
| | - Shashi Arya
- CSIR- National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur, 440 020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, Uttar Pradesh, India
| | - Sunil Kumar
- CSIR- National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur, 440 020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, Uttar Pradesh, India.
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15
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Lin S, Song Y, Huo Y, Wang Q, Liu X, Gao Y, Fan W, Huo M. Cu transport and distribution in different cellular fractions of Klebsiella oxytoca strain CAV 1374. JOURNAL OF HAZARDOUS MATERIALS 2021; 419:126416. [PMID: 34153614 DOI: 10.1016/j.jhazmat.2021.126416] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/31/2021] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
This study elucidated copper (Cu) transport and trafficking mechanisms at the cellular interface using the Cu-resistant strain Klebsiella oxytoca CAV 1374. The optimum conditions for biosorption were determined by investigating uptake rates due to initial pH, initial Cu concentrations, and maximum tolerated concentrations (MTC) of Cu. Cellular fraction analysis and depth-profiling XPS were used to comprehensively evaluate the spatial-temporal distribution of Cu on cellular interfaces during biosorption. Potential uptake mechanisms were then further examined by biosorption kinetics analyses, ion exchange experiments, FTIR analysis, and K+ channel blocking experiments. The results indicated that Cu was primarily absorbed by extracellular polymeric substances through chemical interactions and little Cu penetrated inside cells under low Cu stress conditions (≤20 mg/L). In contrast, an intracellular rate-controlling physical interaction was predominant under high Cu stress conditions (≥30 mg/L). Further, Cu2+ could be bound by functional groups, followed first by replacement of Ca2+ at the cell surface. Subsequently, some of the Cu2+ in cell walls was reduced to Cu+, and only Cu+ could then penetrate into cell membranes. These results indicate that strain Klebsiella oxytoca CAV 1374 is a suitable biosorbent agent for Cu removal and can provide critical insights into Cu-uptake mechanisms of microorganisms.
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Affiliation(s)
- Shanshan Lin
- School of Environment, Northeast Normal University, Changchun 130117, China
| | - Yinghao Song
- School of Environment, Northeast Normal University, Changchun 130117, China
| | - Yang Huo
- School of Environment, Northeast Normal University, Changchun 130117, China
| | - Qi Wang
- School of Environment, Northeast Normal University, Changchun 130117, China
| | - Xiangru Liu
- School of Environment, Northeast Normal University, Changchun 130117, China
| | - Ya Gao
- School of Environment, Northeast Normal University, Changchun 130117, China
| | - Wei Fan
- School of Environment, Northeast Normal University, Changchun 130117, China.
| | - Mingxin Huo
- School of Environment, Northeast Normal University, Changchun 130117, China
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16
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Ofman P, Skoczko I, Włodarczyk-Makuła M. Biosorption of LMW PAHs on activated sludge aerobic granules under varying BOD loading rate conditions. JOURNAL OF HAZARDOUS MATERIALS 2021; 418:126332. [PMID: 34118540 DOI: 10.1016/j.jhazmat.2021.126332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/24/2021] [Accepted: 06/02/2021] [Indexed: 06/12/2023]
Abstract
Polycyclic aromatic hydrocarbons belong to the main priority substances for the aquatic environment. One of the emission sources of these compounds to environment is wastewater discharged from conventional wastewater treatment systems, which are not designed to cope with this type of pollution. Thus, due to the widely discussed properties of aerobic granular activated sludge in the literature - a conducted study has proven its ability to remove LMW PAHs (naphthalene (Nap), acenaphthylene (Acy), acenaphthene (Ace), fluorene (Flu), phenanthrene (Phe) and anthracene (Ant)) from wastewater by biosorption process at varying loadings of organic compounds expressed as BOD (kg/kg·d) on the activated sludge mass. The maximum biosorption of Nap was 605 µg/kgd.m., Acy equals to 134 µg/kgd.m., Ace equals to 355 µg/kgd.m. Flu equals to 104 µg/kgd.m. Phe equal to 204 µg/kgd.m. and Ant equal to 173 µg/kgd.m. The study showed that the BOD loading rate is one of the factors affecting the biosorption process of LMW PAHs. However, as the amount of adsorbed LMW PAHs increased, the condition of aerobic granular activated sludge deteriorated, which was evidenced by gradual increase in the values of technological parameters of activated sludge (SVI, HRT, SRT) and a smaller increase in activated sludge dry mass.
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Affiliation(s)
- Piotr Ofman
- Bialystok University of Technology, 45 Wiejska Str., 15-351 Bialystok, Poland.
| | - Iwona Skoczko
- Bialystok University of Technology, 45 Wiejska Str., 15-351 Bialystok, Poland.
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17
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Rana A, Sindhu M, Kumar A, Dhaka RK, Chahar M, Singh S, Nain L. Restoration of heavy metal-contaminated soil and water through biosorbents: A review of current understanding and future challenges. PHYSIOLOGIA PLANTARUM 2021; 173:394-417. [PMID: 33724481 DOI: 10.1111/ppl.13397] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/13/2021] [Accepted: 03/07/2021] [Indexed: 06/12/2023]
Abstract
Heavy metal pollution in soil and water is a potential threat to human health as it renders food quality substandard. Different biosorbents such as microbial and agricultural biomass have been exploited for heavy metal immobilization in soil and sorptive removal in waters. Biosorption is an effective and sustainable method for heavy metal removal in soil and water, but the inherent challenges are to find cheap, selective, robust, and cost-effective bioadsorbents. Microbial and agricultural biomass and their modified forms such as nanocomposites and carbonaceous materials (viz., biochar, nanobiochar, biocarbon), might be useful for sequestration of heavy metals in soil via adsorption, ion exchange, complexation, precipitation, and enzymatic transformation mechanisms. In this review, potential biosorbents and their metal removal capacity in soil and water are discussed. The microbial adsorbents and modified composites of agricultural biomasses show improved performance, stability, reusability, and effectively immobilize heavy metals from soil and water. In the future, researchers may consider the modified composites, encapsulated biosorbents for soil and water remediation.
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Affiliation(s)
- Anuj Rana
- Department of Microbiology (COBS & H), CCS Haryana Agricultural University, Hisar, India
| | - Meena Sindhu
- Department of Microbiology (COBS & H), CCS Haryana Agricultural University, Hisar, India
| | - Ajay Kumar
- Department of Microbiology (COBS & H), CCS Haryana Agricultural University, Hisar, India
| | - Rahul Kumar Dhaka
- Department of Chemistry, Environmental Sciences, and Centre for Bio-Nanotechnology, CCS Haryana Agricultural University, Hisar, India
| | - Madhvi Chahar
- Department of food quality and safety, Institute of Post Harvest, Agricultural Research Organization, The Volcani Research Center, Bet-Dagan, Israel
| | - Surender Singh
- Department of Microbiology, Central University of Haryana, Mahendragarh, India
| | - Lata Nain
- Division of Microbiology, ICAR-Indian Agricultural Research Institute, New Delhi, India
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18
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Screening and identification of Lactobacillus with potential cadmium removal and its application in fruit and vegetable juices. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108053] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Kandasamy S, Narayanan M, He Z, Liu G, Ramakrishnan M, Thangavel P, Pugazhendhi A, Raja R, Carvalho IS. Current strategies and prospects in algae for remediation and biofuels: An overview. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102045] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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20
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Wang L, Chen H, Wu J, Huang L, Brookes PC, Mazza Rodrigues JL, Xu J, Liu X. Effects of magnetic biochar-microbe composite on Cd remediation and microbial responses in paddy soil. JOURNAL OF HAZARDOUS MATERIALS 2021; 414:125494. [PMID: 33652225 DOI: 10.1016/j.jhazmat.2021.125494] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/17/2021] [Accepted: 02/21/2021] [Indexed: 06/12/2023]
Abstract
There is growing global interest in the bioremediation of cadmium (Cd) using combinations of biochar and microorganisms. However, the interactions among biochar, introduced and indigenous microorganisms remain unclear. Accordingly, a 90 day microcosm experiment was conducted to investigate this by adding Bacillus sp. K1 strain inoculated rice straw biochar (SBB) and magnetic straw biochar (MBB) into a Cd contaminated paddy soil from Hunan, China. All treatments were incubated aerobically (60% water holding capacity) or anaerobically for 90 d. During both soil incubations, Bacillus sp. K1 successfully colonized in soil with composites applications. Soil pH was significantly increased from acid to neutral, and available Cd decreased with the addition of both composites. The better remediation efficiency of MBB than SBB under anerobic conditions was attributed to the transformation of acetic acid-extractable Cd into the residual fraction, caused by Cd2+ bonding with crystal Fe3O4. The application of the two kinds of composites caused similar changes to both microbial communities. There was a slight decrease in indigenous microbial alpha diversity with the MBB aerobic application, while the total population number of bacteria was increased by 700%. Both the redundancy analysis and Mantel analyses indicated that pH and microbial biomass C contributed to the colonization of Bacillus sp. K1 with SBB under aerobic conditions, and with MBB under anerobic conditions, respectively. The research provides a new insight into interactive effects and investigates immobilization mechanisms involved of bacterial/biochar composites in anaerobic and aerobic soils.
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Affiliation(s)
- Lu Wang
- College of Environmental Natural Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China; University of California - Davis, Davis, CA 95616, USA
| | - Hanrui Chen
- College of Environmental Natural Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China
| | - Jizi Wu
- College of Environmental Natural Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China
| | - Laibin Huang
- University of California - Davis, Davis, CA 95616, USA
| | - Philip C Brookes
- College of Environmental Natural Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China
| | | | - Jianming Xu
- College of Environmental Natural Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China
| | - Xingmei Liu
- College of Environmental Natural Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China.
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21
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Kirova G, Velkova Z, Stoytcheva M, Gochev V. Tetracycline removal from model aqueous solutions by pretreated waste Streptomyces fradiae biomass. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1938677] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Gergana Kirova
- Department of Chemical Sciences, Faculty of Pharmacy, Medical University of Plovdiv, Plovdiv, Bulgaria
| | - Zdravka Velkova
- Department of Chemical Sciences, Faculty of Pharmacy, Medical University of Plovdiv, Plovdiv, Bulgaria
| | - Margarita Stoytcheva
- Institute of Engineering (Instituto de Ingeniería), Autonomous University of Baja California (Universidad Autónoma de Baja California), Mexicali, Mexico
| | - Velizar Gochev
- Department of Biochemistry and Microbiology, Faculty of Biology, University of Plovdiv “Paisii Hilendarski”, Plovdiv, Bulgaria
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22
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Günan Yücel H, Ertuğrul Karatay S, Aksu Z, Dönmez G. Lithium (I) biofortified Dunaliella salina as a potential functional nutrition supplement. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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23
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He P, Guo J, Lei L, Jiang J, Li Q, Hu Z, Su B, Fu Z, Xie H. Escherichia coli templated iron oxide biomineralization under oscillation. RSC Adv 2021; 11:15010-15016. [PMID: 35424050 PMCID: PMC8698896 DOI: 10.1039/d1ra00847a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/05/2021] [Indexed: 11/24/2022] Open
Abstract
Motility is significant in organisms. Studying the influence of motility on biological processes provides a new angle in understanding the essence of life. Biomineralization is a representative process for organisms in forming functional materials. In the present study, we investigated the biomineralization of iron oxides templated by Escherichia coli (E. coli) cells under oscillation. The formation of iron oxide minerals with acicular and banded morphology was observed. The surface charge of E. coli cells contributed to the biomineralization process. The surface components of E. coli cells including lipids, carbohydrates and proteins also have roles in regulating the formation and morphology of iron oxide minerals. As-prepared mineralized iron oxide nanomaterials showed activity in photocatalytic degradation of methylene blue as well as in electrocatalytic hydrogen evolution reaction. This study is helpful not only in understanding motility in biological processes, but also in developing techniques for fabricating functional nanomaterials.
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Affiliation(s)
- Panpan He
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology Wuhan 430070 China
| | - Junhui Guo
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology Wuhan 430070 China
| | - Liwen Lei
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan 430070 China
| | - Jiafeng Jiang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology Wuhan 430070 China
| | - Qichang Li
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology Wuhan 430070 China
| | - Zhiyi Hu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan 430070 China
| | - Baolian Su
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan 430070 China
- Laboratory of Inorganic Materials Chemistry, University of Namur B-5000 Namur Belgium
| | - Zhengyi Fu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan 430070 China
| | - Hao Xie
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology Wuhan 430070 China
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24
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Günan Yücel H, Aksu Z, Usta T, Ertuğrul Karatay S, Dönmez G. Novel application of isolated Micrococcus luteus and Bacillus pumilus for Li + ion biosorption: a comparative study. Prep Biochem Biotechnol 2021; 51:892-900. [PMID: 33555983 DOI: 10.1080/10826068.2021.1872029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
In this study, Li+ biosorption profiles of Micrococcus luteus and Bacillus pumilus bacterial strains were investigated. Comparative surface characterization of the biomasses revealed that B. pumilus had a significantly greater surface negativity than the other, which had a direct positive effect on the ability to attract the Li+ ions. Biosorption experiments showed that B. pumilus cell had more efficient performance at all pH and initial Li+ concentration values in the ranges of 3.0-10.0 and 2.5-20.0 mg/L, respectively. The maximum adsorption capacities obtained at initial Li+ concentration of 20.0 mg/L and pH 9.0 were 1.160 mg Li+/g (167.1 µmol/g) and 2.280 mg Li+/g (328.5 µmol/g) for M. luteus and B. pumilus, respectively. For all the cases studied, the biosorption equilibrium was reached very quickly, suggesting that physical interaction dominated this process. Experimental data were found to be compatible with both Langmuir and Freundlich models under the studied experimental conditions. This study highlights the idea that B. pumilus bacterial strain will be a new and preferred biosorbent for Li+ ions by providing a low cost, rapid and quite efficient process.
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Affiliation(s)
- Hande Günan Yücel
- Chemical Engineering Department, Hacettepe University, Ankara, Turkey
| | - Zümriye Aksu
- Chemical Engineering Department, Hacettepe University, Ankara, Turkey
| | - Tuğçe Usta
- Biology Department, Science Faculty, Ankara University, Ankara, Turkey
| | | | - Gönül Dönmez
- Biology Department, Science Faculty, Ankara University, Ankara, Turkey
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25
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Adsorption of selected metals from cassava processing wastewater using cow-bone ash. SCIENTIFIC AFRICAN 2020. [DOI: 10.1016/j.sciaf.2020.e00653] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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26
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Xu X, Yang Y, Wang G, Zhang S, Cheng Z, Li T, Yang Z, Xian J, Yang Y, Zhou W. Removal of heavy metals from industrial sludge with new plant-based washing agents. CHEMOSPHERE 2020; 246:125816. [PMID: 31918109 DOI: 10.1016/j.chemosphere.2020.125816] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 12/07/2019] [Accepted: 01/01/2020] [Indexed: 06/10/2023]
Abstract
Washing is one of the techniques for permanent removal of heavy metals from industrial sludge, for which washing agents are a key influence factor. However, high-efficiency, eco-friendly, and inexpensive agents are still lacking. In this study, the solutions derived from the three plant materials including Fatsia japonica, Hovenia acerba and Pterocarya stenoptera were employed to remove Cd, Cu, Pb, and Ni from industrial sludge. The effects of washing solution concentration, pH, washing time and temperature on metal removal were investigated. The metal removal efficiencies were found to increase with increasing solution concentrations or washing temperatures, decline with increasing pH, and presented various trends with increasing washing time. Among the three agents that derived from H. acerba showed relatively high removal for Cu (75.81%), Pb (63.42%), Ni (27.52%), and Cd (56.99%). After washing, environmental risks of residual metals were markedly diminished in sludge, attributable to decrease in their exchangeable forms. Furthermore, the applications of the plant washing agents increased sludge organic carbon, alkali-hydrolysable nitrogen, available phosphorus, and available potassium. Fourier transform infrared spectroscopy analysis suggested that the hydroxyl, carboxyl, ether, and amide may be the main functional groups in the three plant materials binding the heavy metals. Overall, the agent derived from H. acerba appears to be a feasible washing material for heavy metals removal from sludge.
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Affiliation(s)
- Xiaoxun Xu
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory of Soil Environment Protection of Sichuan Province, Chengdu, 611130, China
| | - Yan Yang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Guiyin Wang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory of Soil Environment Protection of Sichuan Province, Chengdu, 611130, China
| | - Shirong Zhang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory of Soil Environment Protection of Sichuan Province, Chengdu, 611130, China.
| | - Zhang Cheng
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ting Li
- College of Resources, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhanbiao Yang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Junren Xian
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yuanxiang Yang
- College of Environmental Sciences, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wei Zhou
- College of Resources, Sichuan Agricultural University, Chengdu, 611130, China
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27
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Ali Redha A. Removal of heavy metals from aqueous media by biosorption. ARAB JOURNAL OF BASIC AND APPLIED SCIENCES 2020. [DOI: 10.1080/25765299.2020.1756177] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Ali Ali Redha
- Department of Chemistry, College of Science, University of Bahrain, Kingdom of Bahrain
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Günan Yücel H, Aksu Z, Yalçınkaya GB, Karatay SE, Dönmez G. A comparative investigation of lithium(I) biosorption properties of Aspergillus versicolor and Kluyveromyces marxianus. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 81:499-507. [PMID: 32385203 DOI: 10.2166/wst.2020.126] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In the current batch study, lithium(I) ion sorption behaviors of Aspergillus versicolor fungus and newly isolated Kluyveromyces marxianus yeast were investigated comparatively. Surface and structural characterization studies of the biosorbents carried out with Fourier transform infrared spectrometer (FTIR), scanning electron microscope (SEM), surface area and zeta potential analyses showed that isolated K. marxianus yeast from salty wastes has more preferable properties (i.e. higher porosity, surface area and negativity) for cation sorption. Biosorption studies also supported this estimation; higher lithium(I) sorption capacities were obtained with K. marxianus cells at all experimental conditions studied. Rapid sorption profiles of the sorbents demonstrated that physical interaction is the main mechanism in this system. The effects of pH and initial lithium(I) concentration on the lithium(I) sorption capacities of biosorbents were examined. The maximum adsorption capacities of 347.9 and 409.2 μmol lithium(I)/g biosorbent were obtained at an initial lithium(I) concentration of 20 mg/L at pH 9.0 using A. versicolor and K. marxianus, respectively. The equilibrium data fitted both Langmuir and Freundlich models in the concentration ranges studied. This study revealed that K. marxianus yeast can be used for effective, rapid and low cost capture process of lithium(I) ions from aqueous solutions.
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Affiliation(s)
- Hande Günan Yücel
- Chemical Engineering Department, Hacettepe University, 06800, Ankara, Turkey
| | - Zümriye Aksu
- Chemical Engineering Department, Hacettepe University, 06800, Ankara, Turkey
| | | | | | - Gönül Dönmez
- Biology Department, Science Faculty, Ankara University, 06100, Ankara, Turkey E-mail:
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Vakili M, Rafatullah M, Yuan J, Zwain HM, Mojiri A, Gholami Z, Gholami F, Wang W, Giwa AS, Yu Y, Cagnetta G, Yu G. Nickel ion removal from aqueous solutions through the adsorption process: a review. REV CHEM ENG 2020. [DOI: 10.1515/revce-2019-0047] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Recently, removal of nickel ions has been gaining a lot of attention because of the negative impact of nickel ions on the environment. The aim of this review paper is to organize the scattered available information on removal of nickel ions from aqueous solutions through the adsorption process. Survey on investigated materials suggests that composite- and polymer-based adsorbents have the most effective capability for nickel adsorption. The composite material class, i.e. CaCO3-maltose, followed by biopolymer-based material showed the highest Ni(II) adsorption capacity of 769.23 and 500 mg/g, respectively. The importance of treatment parameters (i.e. pH, temperature, contact time, and metal ion concentration) is discussed, together with their effect on the underlying physicochemical phenomena, giving particular attention to the adsorption/desorption mechanism. It was ascertained that adsorption of nickel ions is pH dependent and the optimal pH range for adsorption of Ni(II) ions was in range of 6–8. In general, nickel adsorption is an endothermic and spontaneous process that mainly occurs by forming a monolayer on the adsorbent (experimental data are often fitted by Langmuir isotherms and pseudo-second-order kinetics). Regeneration (i.e. desorption) is also reviewed, suggesting that acidic eluents (e.g. HCl and HNO3) allow, in most of the cases, an efficacious spent adsorbent recovery. The percentage use of desorption agents followed the order of acids (77%) > chelators (8.5%) > alkalis (8%) > salts (4.5%) > water (2%). Helpful information about adsorption and desorption of nickel ions from aqueous solutions is provided.
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Affiliation(s)
- Mohammadtaghi Vakili
- Green Intelligence Environmental School, Yangtze Normal University , Chongqing 408100 , China
| | - Mohd Rafatullah
- School of Industrial Technology, Universiti Sains Malaysia , Penang 11800 , Malaysia
| | - Jing Yuan
- Green Intelligence Environmental School, Yangtze Normal University , Chongqing 408100 , China
| | - Haider M. Zwain
- College of Water Resources Engineering, Al-Qasim Green University , Al-Qasim Province , Babylon , Iraq
| | - Amin Mojiri
- Department of Civil and Environmental Engineering, Graduate School of Engineering , Hiroshima University , Higashihiroshima 739-8527 , Japan
| | - Zahra Gholami
- Unipetrol Centre of Research and Education, a.s , Areál Chempark 2838, Záluží 1, 436 70 Litvínov , Czech Republic
| | - Fatemeh Gholami
- New Technologies – Research Centre, Engineering of Special Materials, University of West Bohemia , Plzeň 301 00 , Czech Republic
| | - Wei Wang
- State Key Laboratory of Plateau Ecology and Agriculture , Qinghai University , Xi’ning, Qinghai Province 810016 , China
| | - Abdulmoseen S. Giwa
- Green Intelligence Environmental School, Yangtze Normal University , Chongqing 408100 , China
| | - Youqing Yu
- Green Intelligence Environmental School, Yangtze Normal University , Chongqing 408100 , China
- Chongqing Hyperspectral Remote Sensing Engineering Research Center for Ecological Environment Monitoring, Yangtze Normal University , Chongqing 408100 , China
- Chongqing Multiple-Source Technology Engineering Research Center for Ecological Environment Monitoring, Yangtze Normal University , Chongqing 408100 , China
| | - Giovanni Cagnetta
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Beijing Key Laboratory for Emerging Organic Contaminants Control, School of Environment , Tsinghua University , Beijing 100084 , China , Phone: +86-10-62798 2598, Fax: +86-10-6279 4006
| | - Gang Yu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Beijing Key Laboratory for Emerging Organic Contaminants Control, School of Environment , Tsinghua University , Beijing 100084 , China
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Gümüş D, Gümüş F. Modeling heavy metal removal by retention on Laurus nobilis leaves biomass: linear and nonlinear isotherms and design. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2020; 22:755-763. [PMID: 31916451 DOI: 10.1080/15226514.2019.1709336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Heavy metal industries pose a serious threat to the environment. Conventional methods used for heavy metal removal are generally not always low-cost and environmentally friendly. So, researchers focused to investigate alternative biosorbents for the uptake of heavy metal. In this study, Laurus nobilis leaves (LNL) were used as a biosorbent for the uptake of toxic metals such as Pb2+ and Cd2+ from aqueous solutions. Batch biosorption experiments under varied conditions, such as biosorbent dosage, solution pH, heavy metal concentration, biosorption time, ionic strength, humic acid effect and competitive metal ions (Cd(II), Pb(II), Cu(II) and Zn(II)) were performed. The biomass was characterized using FT-IR spectra and SEM images. The nonlinearized and linearized isotherm models were compared and discussed. A single-stage batch bioreactor system for each heavy metal based on the best fit nonlinear isotherm model also has been presented. The biosorption of Pb(II) on LNL fitted better in the Langmuir model and Cd(II) biosorption fitted better in the Freundlich model by nonlinearized equations. The LNL exhibited the maximum monolayer biosorption capacities (qmax) of 7.1 and 32.5 mg/g for cadmium and lead, respectively. LNL showed great potential especially in Pb(II) uptake. LNL may be promising for heavy metal removal from aqueous environment.
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Affiliation(s)
- Dilek Gümüş
- Department of Construction and Technical Works, Sinop University, Sinop, Turkey
| | - Fatih Gümüş
- Department of Biology, Faculty of Arts and Science, Sinop University, Sinop, Turkey
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Abdel Maksoud M, Elgarahy AM, Farrell C, Al-Muhtaseb AH, Rooney DW, Osman AI. Insight on water remediation application using magnetic nanomaterials and biosorbents. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213096] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Vardhan KH, Kumar PS, Panda RC. A review on heavy metal pollution, toxicity and remedial measures: Current trends and future perspectives. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111197] [Citation(s) in RCA: 500] [Impact Index Per Article: 100.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Wang Y, Yi B, Sun X, Yu L, Wu L, Liu W, Wang D, Li Y, Jia R, Yu H, Li X. Removal and tolerance mechanism of Pb by a filamentous fungus: A case study. CHEMOSPHERE 2019; 225:200-208. [PMID: 30875503 DOI: 10.1016/j.chemosphere.2019.03.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 02/28/2019] [Accepted: 03/05/2019] [Indexed: 06/09/2023]
Abstract
Currently, Pb pollution has become a severe environmental problem and filamentous fungi hold a promising potential for the treatment of Pb-containing wastewater. The present study showed that the strain Pleurotus ostreatus ISS-1 had a strong ability to tolerate Pb at high concentration and reached a removal rate of 53.7% in liquid media. Pb was removed by extracellular biosorption, intracellular bioaccumulation by mycelia, or precipitation with extracellular oxalic acids. On the cellular level, Pb was mainly distributed in the cell wall, followed by vacuoles and organelles. Fourier transform infrared spectroscopy (FTIR) analysis indicated that hydroxyl, amides, carboxyl, and sulfhydryl groups provided binding sites for Pb. Furthermore, Pb was found on the cell surface in the form of PbS and PbCO3 through X-ray diffraction (XRD). Intracellular chelates such as thiol compounds and oxalic acid, as well as extracellular oxalic acid, might play an important role in the tolerance of Pb. In addition, isobaric tags for relative and absolute quantitation (iTRAQ) analysis showed that ATP-binding cassette (ABC) transporter, cytochrome P450, peroxisome, and the calcium signaling pathway might participate in both accumulation and detoxification of Pb. These results have successfully provided a basis for further developing Pb polluted water treatment technology by fungi.
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Affiliation(s)
- Youjing Wang
- College of Life Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Baizhu Yi
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Xiaowei Sun
- Henan Academy of Forestry, Zhengzhou, 450008, China
| | - Lei Yu
- Henan Academy of Forestry, Zhengzhou, 450008, China
| | - Longhua Wu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Wuxing Liu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Daichang Wang
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450002, China
| | - Yilun Li
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Rui Jia
- College of Life Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Hao Yu
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Xuanzhen Li
- College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China.
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Inactive Fusarium Fungal strains (ZSY and MJY) isolation and application for the removal of Pb(II) ions from aqueous environment. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2018.12.047] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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35
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Harrache Z, Abbas M, Aksil T, Trari M. Thermodynamic and kinetics studies on adsorption of Indigo Carmine from aqueous solution by activated carbon. Microchem J 2019. [DOI: 10.1016/j.microc.2018.09.004] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Farrokhzadeh S, Razmi H. Use of chicken feet yellow membrane as a biosorbent in miniaturized solid phase extraction for determination of polycyclic aromatic hydrocarbons in several real samples. Microchem J 2018. [DOI: 10.1016/j.microc.2018.06.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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