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Liu X, Cai X, Yin N, Huang X, Wang P, Basheer MZ, Fan C, Chang X, Hu Z, Sun G, Cui Y. The pH-dependent role of different manganese oxides in the fate of arsenic during microbial reduction of arsenate-bearing goethite. WATER RESEARCH 2024; 261:121988. [PMID: 38986281 DOI: 10.1016/j.watres.2024.121988] [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: 12/18/2023] [Revised: 06/08/2024] [Accepted: 06/20/2024] [Indexed: 07/12/2024]
Abstract
Manganese oxides reduce arsenic (As) toxicity by promoting aqueous-phase As(III) oxidation and immobilization in natural aquatic ecosystems. In anaerobic water-sediment systems, arsenic exists both in a free state in the liquid phase and in an adsorbed state on iron (Fe) minerals. However, the influence of different manganese oxides on the fate of As in this system remains unclear. Therefore, in this study, we constructed an anaerobic microbial As(V) reduction environment and investigated the effects of three different manganese oxides on the fate of both aqueous-phase and goethite-adsorbed As under different pH conditions. The results showed that δ-MnO2 had a superior As(III) oxidation ability in both aqueous and solid phase due not only to the higher SSA, but also to its wrinkled crystalline morphology, less favorable structure for bacterial reduction, structure conducive to ion exchange, and less interference caused by the formation of secondary Fe-minerals compared to α-MnO2 and γ-MnO2. Regarding aqueous-phase As, δ-MnO2, α-MnO2, and γ-MnO2 required an alkaline condition (pH 9) to exhibit their strongest As(III) oxidation and immobilization capability. For goethite-adsorbed As, under microbial-reducing conditions, all manganese oxides had the highest As immobilization effect in neutral pH environments and the strongest As oxidation effect in alkaline environments. This was because at pH 7, Fe(II) and Mn(II) formed hydrated complexes, which was more favorable for As adsorption. At pH 9, the negatively charged state of goethite hindered As adsorption but promoted the adsorption and oxidation of As by the manganese oxides. Our research offers new insights for optimizing As removal from water using various manganese oxides and for controlling the mobilization of As in water-sediment system under different pH conditions.
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Affiliation(s)
- Xiaotong Liu
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China
| | - Xiaolin Cai
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China.
| | - Naiyi Yin
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China
| | - Xuhan Huang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China
| | - Pengfei Wang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China
| | - Muhammad Zeeshan Basheer
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China
| | - Chuanfang Fan
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China
| | - Xuhui Chang
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China
| | - Zhengyi Hu
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China; Sino-Danish Centre for Education and Research, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China
| | - Guoxin Sun
- Research Center for Eco-Environment Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China
| | - Yanshan Cui
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, People's Republic of China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China.
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Antolín Puebla B, Vega Alegre M, Bolado Rodríguez S, García Encina PA. Microalgae: A Biological Tool for Removal and Recovery of Potentially Toxic Elements in Wastewater Treatment Photobioreactors. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2024. [PMID: 39190203 DOI: 10.1007/10_2024_262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
Potentially toxic elements (PTE) pollution in water bodies is an emerging problem in recent decades due to uncontrolled discharges from human activities. Copper, zinc, arsenic, cadmium, lead, mercury, and uranium are considered potentially toxic and carcinogenic elements that threaten human health. Microalgae-based technologies for the wastewater treatment have gained importance in recent years due to their biomass high growth rates and effectiveness. Also, these microalgae-bacteria systems are cost-effective and environmentally friendly, utilize sunlight and CO2, and simultaneously address multiple environmental challenges, such as carbon mitigation, bioremediation, and generation of valuable biomass useful for biofuel production. Additionally, microalgae possess a diverse array of extracellular and intracellular mechanisms that enable them to remove and mitigate the toxicity of PTE present in wastewater. Therefore, photobioreactors are promising candidates for practical applications in bioremediation of wastewater containing toxic elements. Despite the increasing amount of research in this field in recent years, most studies are conducted in laboratory scale and there is a scarcity of large-scale studies under real and variable environmental conditions. Besides, the limited understanding of the multiple mechanisms controlling PTE biosorption in wastewater containing high organic matter loads and potentially toxic elements requires further studies. This chapter provides a schematic representation of the mechanisms and factors involved in the remediation of potentially toxic elements by microalgae, as well as the main results obtained in recent years.
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Affiliation(s)
- Beatriz Antolín Puebla
- Institute of Sustainable Processes, University of Valladolid, Valladolid, Spain.
- Department of Analytical Chemistry, Faculty of Sciences, University of Valladolid, Valladolid, Spain.
| | - Marisol Vega Alegre
- Institute of Sustainable Processes, University of Valladolid, Valladolid, Spain
- Department of Analytical Chemistry, Faculty of Sciences, University of Valladolid, Valladolid, Spain
| | - Silvia Bolado Rodríguez
- Institute of Sustainable Processes, University of Valladolid, Valladolid, Spain
- Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering, University of Valladolid, Valladolid, Spain
| | - Pedro A García Encina
- Institute of Sustainable Processes, University of Valladolid, Valladolid, Spain
- Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering, University of Valladolid, Valladolid, Spain
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3
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Karaduman FR, Türk Çulha S, Horzum N. Seaweed Superheroes: Cystoseira barbata-Incorporated Electrospun Fibers for Lead Ion Sequestration. ACS APPLIED BIO MATERIALS 2024; 7:5345-5358. [PMID: 38991130 DOI: 10.1021/acsabm.4c00550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2024]
Abstract
The efficient removal of lead ions at low concentrations is paramount in combating the significant threat posed by water pollution resulting from industrial activities and population growth. In this study, electrospun C. barbata/PAN fibers were developed to efficiently remove lead(II) ions from water. The morphology, structure, and mechanical properties of the fibers were examined, highlighting that the augmentation of the surface area through the conversion of C. barbata into the polymer fibers facilitates increased metal bonding sites during sorption. C. barbata/PAN fibers exhibited superior characteristics, including higher surface area, smaller pore size, and increased pore volume, compared to powdered C. barbata. The effects of factors such as shaking time, algae percentage, sorbent amount, pH, metal concentration, and temperature on Pb(II) sorption were investigated by the batch method. At an initial ion concentration of 100 μg L-1 and pH 4.0, C. barbata (5 wt %)/PAN fiber demonstrated a notable sorption efficiency of 89-90% (270 μg/g) after 60 min. The equilibrium data align with the Freundlich and Dubinin-Radushkevich isotherm models, whereas the pseudo-second-order kinetic model provides the most suitable description. The characterization of fibers after sorption revealed that carboxyl, hydroxyl, and sulfonyl groups play an active role in Pb(II) sorption.
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Affiliation(s)
- Fatma Rabia Karaduman
- Graduate School of Natural and Applied Sciences, İzmir Katip Çelebi University, İzmir 35620, Turkey
| | - Saniye Türk Çulha
- Department of Basic Science, Faculty of Fisheries, İzmir Katip Çelebi University, İzmir 35620, Turkey
| | - Nesrin Horzum
- Department of Engineering Science, Faculty of Engineering and Architecture, İzmir Katip Çelebi University, İzmir 35620, Turkey
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Ruparelia JR, Patel HK. Harnessing the chromium reduction potential of Pseudomonas aeruginosa JRHM33: A comprehensive study on bioinformatics, phenotype microarray, and CCD-RSM optimization. Heliyon 2024; 10:e35650. [PMID: 39170122 PMCID: PMC11336874 DOI: 10.1016/j.heliyon.2024.e35650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 07/31/2024] [Accepted: 08/01/2024] [Indexed: 08/23/2024] Open
Abstract
Large amounts of wastewater are generated due to overpopulation and industrialization, The bioavailability, toxicity, and permanence of metals make heavy metal contamination a big environmental hazard. In order to maximize chromium (Cr+6) removal efficiency, the current investigation was carried out from industrial wastewater using Pseudomonas aeruginosa JRHM33.35 bacterial strains were discovered based on their physical, and biochemical properties and resistance towards chromium (Cr+6) heavy metal. The most significant bacterial strain JRHM33 found the highest-level of 1000 mg/L of chromium (Cr+6) resistance. The bacterial strain JRHM33, which has 99 % similarity to Pseudomonas aeruginosa, was found using 16 S rRNA sequencing and is employed in subsequent steps. Sequencing and study of conserved domains indicate that JRHM33 contains the laccase gene and belongs to the multicopper oxidase superfamily, which is known for its ability to reduce metal ions. Analysing phenotype microarray (PM) technology sheds light on Pseudomonas aeruginosa JRHM33 metabolic profile of microbial cells. Additionally, a series of process parameter optimizations were tried using the central composite design of response surface methodology (CCD-RSM) in an effort to reduce the amount of chromium (Cr+6) in the effluent as much as possible. At 6.8 pH, 90 min of incubation, inoculum size is 3.8 ml, and agitation is 104 rpm, a maximum 71 % Cr+6 reduction was attained. The model constructed has an R2 score of 0.983 indicates a very statistically significant outcome from the analysis of variance. The experimental outcomes and the predicted results were remarkably similar, according to the validation experiment. Studies have revealed that bacterial strains obtained from effluent containing high levels of metals utilize their inherent capability to change harmful heavy metals into less dangerous or harmless forms.
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Affiliation(s)
- Jayeshkumar R. Ruparelia
- Shree P.M. Patel Institute of PG Studies & Research in Science, Anand, Gujarat, 388001, India
- School of Sciences, P P Savani University, Surat, Gujarat, 394125, India
| | - Hiren K. Patel
- School of Sciences, P P Savani University, Surat, Gujarat, 394125, India
- School of Agriculture, P P Savani University, Surat, Gujarat, 394125, India
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Haider S, Ullah S, Kazi M, Qamar F, Siddique T, Anwer R, Khan SA, Salman S. Ion-Exchange Resin/Carrageenan-Copper-Based Nanocomposite: Artificial Neural Network, Advanced Thermodynamic Profiling, and Anticoagulant Studies. ACS OMEGA 2024; 9:23873-23891. [PMID: 38854529 PMCID: PMC11154903 DOI: 10.1021/acsomega.4c01540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 04/21/2024] [Accepted: 04/29/2024] [Indexed: 06/11/2024]
Abstract
Carrageenan (CG) and ion exchange resins (IERs) are better metal chelators. Kappa (κ) CG and IERs were synthesized and subjected to copper ion (Cu2+) adsorption to obtain DMSCH/κ-Cu, DC20H/κ-Cu, and IRP69H/κ-Cu nanocomposites (NCs). The NCs were studied using statistical physics formalism (SPF) at 315-375 K and a multilayer perceptron with five input nodes. The percentage of Cu2+ uptake efficiency was used as an outcome variable. Via the grand canonical ensemble, SPF gives models for both monolayer and multilayer sorption layers. For in vitro anticoagulant activity (ACA), the activated partial thromboplastin time were calculated using 100 μL of rabbit plasma incubated at 37 °C. After 2 min, 100 L of 0.025 M CaCl2 was added, and the clotting time was recorded for each group (n = 6). The results demonstrated that the key covariables for the adsorption process were pH and concentration. The results of artificial neural network models were comparable with the experimental findings. The error rates varied between 4.3 and 1.0%. The prediction analysis results ranged from 43.6 to 89.2. The ΔG and ΔS values for IRP69H/κ-Cu obtained were -18.91 and -16.32 and 26.21 and 22.74 kJ/mol for the temperatures 315 and 345 K, respectively. Adsorbate species were perpendicular to the adsorbent surfaces, notwithstanding the apparent importance of macro- and micropore volumes. These adsorbents typically fluctuate with temperature changes and contain one or more layers of sorption. Negative and positive sorption energies correspond to endothermic and exothermic processes. The biosorption energy (E1 and E2) values in this experiment have a value of less than 23 kJ mol-1. Complex SPF models' energy distributions validate surface properties and interactions with adsorbates. At a concentration of 100 μg/mL, DC20H/κ-Cu2+ exhibited an ACA of only 8 s. These NCs demonstrated better greater ACA with the order DC20H/κ < DMSCH/κ < IRP69H/κ. More research is needed to rule out the chemical processes behind the ACA of CG/IER-Cu NCs.
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Affiliation(s)
- Sana Haider
- Department
of Pharmacy, University of Peshawar, Peshawar 25120, Pakistan
| | - Sami Ullah
- Department
of Pharmacy, University of Peshawar, Peshawar 25120, Pakistan
| | - Mohsin Kazi
- Department
of Pharmaceutics, College of Pharmacy, King
Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Fouzia Qamar
- Department
of Biology, Lahore Garrison University, Main Campus, Lahore 54000, Pakistan
| | - Tariq Siddique
- Faculty
of Pharmacy, Ibadat International University, Islamabad 44000, Pakistan
| | - Rubia Anwer
- Faculty
of Pharmacy, Ibadat International University, Islamabad 44000, Pakistan
| | - Saeed Ahmad Khan
- Sharjah
Institute of Medical Research, Dubai 500001, United Arab Emirates
- Department
of Pharmacy, Kohat University of Science
and Technology, Kohat 26000, Pakistan
| | - Saad Salman
- Department
of Pharmacy, CECOS University of IT and
Emerging Sciences, Hayatabad,
Peshawar, Khyber Pakhtunkhwa 25000, Pakistan
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Flores-Rojas AI, Medellín-Castillo NA, Cisneros-Ontiveros HG, Acosta-Doporto GA, Cruz-Briano SA, Leyva-Ramos R, Berber-Mendoza MS, Díaz-Flores PE, Ocampo-Pérez R, Labrada-Delgado GJ. Detection and mapping of the seasonal distribution of water hyacinth (Eichhornia crassipes) and valorization as a biosorbent of Pb(II) in water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:40190-40207. [PMID: 37704815 DOI: 10.1007/s11356-023-29780-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 09/04/2023] [Indexed: 09/15/2023]
Abstract
In the present research, the presence of water hyacinth (Eichhornia crassipes) on the surface of the San Jose Dam located in the city of San Luis Potosi, S.L.P, Mexico, was monitored and mapped. The monitoring was conducted for 2 years (2018-2020) with remote sensing data from OLI Landsat 8 sensors, based on the normalized difference vegetation index (NDVI). The results demonstrated the capability and accuracy of this method, where it was observed that the aboveground cover area, proliferation, and distribution of water hyacinth are influenced by climatic and anthropogenic factors during the four seasons of the year. As part of a sustainable environmental control of this invasive species, the use of water hyacinth (WH) root (RO), stem (ST), and leaf (LE) components as adsorbent material for Pb(II) present in aqueous solution was proposed. The maximum adsorption capacity was observed at pH 5 and 25 °C and was 107.3, 136.8, and 120.8 mg g-1 for RO, ST, and LE, respectively. The physicochemical characterization of WH consisted of scanning electron microscopy (SEM), N2 physisorption, infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), charge distribution, and zero charge point (pHPZC). Due to the chemical nature of WH, several Pb(II) adsorption mechanisms were proposed such as electrostatic attractions, ion exchange, microprecipitation, and π-cation.
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Affiliation(s)
- Alfredo Israel Flores-Rojas
- Postgraduate Study and Research Center, Faculty of Engineering, Autonomous University of San Luis Potosi, Av. Dr. M Nava No. 8, Zona Universitaria, 78290, San Luis Potosi, Mexico
| | - Nahum Andrés Medellín-Castillo
- Postgraduate Study and Research Center, Faculty of Engineering, Autonomous University of San Luis Potosi, Av. Dr. M Nava No. 8, Zona Universitaria, 78290, San Luis Potosi, Mexico.
| | - Hilda Guadalupe Cisneros-Ontiveros
- Environmental Agenda, Multidisciplinary Graduate Program in Environmental Sciences, University of San Luis Potosi, Av. Dr. M Nava No. 201, Zona Universitaria, 78210, San Luis Potosi, Mexico
| | - Geiler Abadallan Acosta-Doporto
- Postgraduate Study and Research Center, Faculty of Engineering, Autonomous University of San Luis Potosi, Av. Dr. M Nava No. 8, Zona Universitaria, 78290, San Luis Potosi, Mexico
| | - Sergio Armando Cruz-Briano
- Environmental Agenda, Multidisciplinary Graduate Program in Environmental Sciences, University of San Luis Potosi, Av. Dr. M Nava No. 201, Zona Universitaria, 78210, San Luis Potosi, Mexico
| | - Roberto Leyva-Ramos
- Postgraduate Study and Research Center, Faculty of Chemical Sciences, Autonomous University of San Luis Potosi, Av. Dr. M Nava No. 6, Zona Universitaria, 78210, San Luis Potosi, Mexico
| | - María Selene Berber-Mendoza
- Postgraduate Study and Research Center, Faculty of Engineering, Autonomous University of San Luis Potosi, Av. Dr. M Nava No. 8, Zona Universitaria, 78290, San Luis Potosi, Mexico
| | - Paola Elizabeth Díaz-Flores
- Postgraduate Study and Research Center, Faculty of Chemical Sciences, Autonomous University of San Luis Potosi, Av. Dr. M Nava No. 6, Zona Universitaria, 78210, San Luis Potosi, Mexico
| | - Raúl Ocampo-Pérez
- Postgraduate Study and Research Center, Faculty of Chemical Sciences, Autonomous University of San Luis Potosi, Av. Dr. M Nava No. 6, Zona Universitaria, 78210, San Luis Potosi, Mexico
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Segaran TC, Azra MN, Mohd Noor MI, Danish-Daniel M, Burlakovs J, Lananan F, Xu J, Kari ZA, Wei LS. Knowledge mapping analysis of the global seaweed research using CiteSpace. Heliyon 2024; 10:e28418. [PMID: 38560172 PMCID: PMC10981124 DOI: 10.1016/j.heliyon.2024.e28418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 03/10/2024] [Accepted: 03/19/2024] [Indexed: 04/04/2024] Open
Abstract
Seaweed research has gained substantial momentum in recent years, attracting the attention of researchers, academic institutions, industries, policymakers, and philanthropists to explore its potential applications and benefits. Despite the growing body of literature, there is a paucity of comprehensive scientometric analyses, highlighting the need for an in-depth investigation. In this study, we utilized CiteSpace to examine the global seaweed research landscape through the Web of Science Core Collection database, assessing publication trends, collaboration patterns, network structures, and co-citation analyses across 48,278 original works published since 1975. Our results demonstrate a diverse and active research community, with a multitude of authors and journals contributing to the advancement of seaweed science. Thematic co-citation cluster analysis identified three primary research areas: "Coral reef," "Solar radiation," and "Mycosporine-like amino acid," emphasizing the multidisciplinary nature of seaweed research. The increasing prominence of "Chemical composition" and "Antioxidant" keywords indicates a burgeoning interest in characterizing the nutritional value and health-promoting properties of seaweed. Timeline co-citation analysis unveils that recent research priorities have emerged around the themes of coral reefs, ocean acidification, and antioxidants, underlining the evolving focus and interdisciplinary approach of the field. Moreover, our analysis highlights the potential of seaweed as a functional food product, poised to contribute significantly to addressing global food security and sustainability challenges. This study underscores the importance of bibliometric analysis in elucidating the global seaweed research landscape and emphasizes the need for sustained knowledge exchange and collaboration to drive the field forward. By revealing key findings and emerging trends, our research offers valuable insights for academics and stakeholders, fostering a more profound understanding of seaweed's potential and informing future research endeavors in this promising domain.
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Affiliation(s)
- Thirukanthan Chandra Segaran
- Institute of Climate Adaptation and Marine Biotechnology (ICAMB), Universiti Malaysia Terengganu (UMT), Kuala Nerus, 21030, Terengganu, Malaysia
| | - Mohamad Nor Azra
- Institute of Climate Adaptation and Marine Biotechnology (ICAMB), Universiti Malaysia Terengganu (UMT), Kuala Nerus, 21030, Terengganu, Malaysia
- Research Center for Marine and Land Bioindustry, Earth Sciences and Maritime Organization, National Research and Innovation Agency (BRIN), Pemenang, 83352, Indonesia
| | - Mohd Iqbal Mohd Noor
- Faculty of Business Management, Universiti Teknologi MARA (UiTM) (Pahang), 27600, Raub, Pahang, Malaysia
- Institute for Biodiversity and Sustainable Development, Universiti Teknologi MARA (UiTM), 40450, Shah Alam, Selangor, Malaysia
| | - Muhd Danish-Daniel
- Institute of Climate Adaptation and Marine Biotechnology (ICAMB), Universiti Malaysia Terengganu (UMT), Kuala Nerus, 21030, Terengganu, Malaysia
| | - Juris Burlakovs
- Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, Poland
| | - Fathurrahman Lananan
- Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, 22200 Besut, Terengganu, 21300, Malaysia
| | - Juntian Xu
- School of Marine Science and Fisheries, Jiangsu Ocean University, No. 59 Cangwu Road, Haizhou District, Lianyungang City, Jiangsu, China
| | - Zulhisyam Abdul Kari
- Department of Agricultural Science, Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, 17600, Jeli, Kelantan, Malaysia
| | - Lee Seong Wei
- Department of Agricultural Science, Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, 17600, Jeli, Kelantan, Malaysia
- Tropical Rainforest Research Centre (TRaCe), Universiti Malaysia Kelantan, Pulau Banding, 33300, Gerik, Perak, Malaysia
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Kováčová M, Bodnár Yankovych H, Augustyniak A, Casas-Luna M, Remešová M, Findoráková L, Stahorský M, Čelko L, Baláž M. Triggering antibacterial activity of a common plant by biosorption of selected heavy metals. J Biol Inorg Chem 2024; 29:201-216. [PMID: 38587623 PMCID: PMC11098919 DOI: 10.1007/s00775-024-02045-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 01/22/2024] [Indexed: 04/09/2024]
Abstract
The presented study proposes an efficient utilization of a common Thymus serpyllum L. (wild thyme) plant as a highly potent biosorbent of Cu(II) and Pb(II) ions and the efficient interaction of the copper-laden plant with two opportunistic bacteria. Apart from biochars that are commonly used for adsorption, here we report the direct use of native plant, which is potentially interesting also for soil remediation. The highest adsorption capacity for Cu(II) and Pb(II) ions (qe = 12.66 and 53.13 mg g-1, respectively) was achieved after 10 and 30 min of adsorption, respectively. Moreover, the Cu-laden plant was shown to be an efficient antibacterial agent against the bacteria Escherichia coli and Staphylococcus aureus, the results being slightly better in the former case. Such an activity is enabled only via the interaction of the adsorbed ions effectively distributed within the biological matrix of the plant with bacterial cells. Thus, the sustainable resource can be used both for the treatment of wastewater and, after an effective embedment of metal ions, for the fight against microbes.
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Affiliation(s)
- Mária Kováčová
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 040 01, Košice, Slovakia
| | - Halyna Bodnár Yankovych
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 040 01, Košice, Slovakia
| | - Adrian Augustyniak
- Chair of Building Materials and Construction Chemistry, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355, Berlin, Germany
- Faculty of Chemical Technology and Engineering, The West Pomeranian University of Technology in Szczecin, Piastów Avenue 42, 71 065, Szczecin, Poland
- Institute of Biology, University of Szczecin, ul. Wąska 13, 71-415, Szczecin, Poland
| | - Mariano Casas-Luna
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00, Brno, Czech Republic
- Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16, Prague 2, Czech Republic
| | - Michaela Remešová
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00, Brno, Czech Republic
| | - Lenka Findoráková
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 040 01, Košice, Slovakia
| | - Martin Stahorský
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 040 01, Košice, Slovakia
| | - Ladislav Čelko
- Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00, Brno, Czech Republic
| | - Matej Baláž
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 040 01, Košice, Slovakia.
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Zhang Y, Wang L, Liu X, Cao C, Yao J, Ma Z, Shen Q, Chen Q, Liu J, Li R, Jiang J. Enhancing La(III) biosorption and biomineralization with Micromonospora saelicesensis: Involvement of phosphorus and formation of monazite nano-minerals. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169851. [PMID: 38185165 DOI: 10.1016/j.scitotenv.2023.169851] [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: 10/16/2023] [Revised: 12/15/2023] [Accepted: 12/30/2023] [Indexed: 01/09/2024]
Abstract
The release of rare earth elements (REEs) from mining wastes and their applications has significant environmental implications, necessitating the development of effective prevention and reclamation strategies. The mobility of REEs in groundwater due to microorganisms has garnered considerable attention. In this study, a La(III) resistant actinobacterium, Micromonospora saelicesensis KLBMP 9669, was isolated from REE enrichment soil in GuiZhou, China, and evaluated for its ability to adsorb and biomineralize La(III). The findings demonstrated that M. saelicesensis KLBMP 9669 immobilized La(III) through the physical and chemical interactions, with immobilization being influenced by the initial La(III) concentration, biomass, and pH. The adsorption kinetics followed a pseudo-second-order rate model, and the adsorption isotherm conformed to the Langmuir model. La(III) adsorption capacity of this strain was 90 mg/g, and removal rate was 94 %. Scanning electron microscope (SEM) coupled with energy dispersive X-ray spectrometer (EDS) analysis revealed the coexistence of La(III) with C, N, O, and P. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) investigations further indicated that carboxyl, amino, carbonyl, and phosphate groups on the mycelial surface may participate in lanthanum adsorption. Transmission electron microscopy (TEM) revealed that La(III) accumulation throughout the M. saelicesensis KLBMP 9669, with some granular deposits on the mycelial surface. Selected area electron diffraction (SAED) confirmed the presence of LaPO4 crystals on the M. saelicesensis KLBMP 9669 biomass after a prolonged period of La(III) accumulation. This post-sorption nano-crystallization on the M. saelicesensis KLBMP 9669 mycelial surface is expected to play a crucial role in limiting the bioimmobilization of REEs in geological repositories.
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Affiliation(s)
- Ya Zhang
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Lili Wang
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Xiuming Liu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou 550002, PR China
| | - Chengliang Cao
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China.
| | - Jiaqi Yao
- The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Zhouai Ma
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Qi Shen
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Qiuyu Chen
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Jinjuan Liu
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China.
| | - Rongpeng Li
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
| | - Jihong Jiang
- The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China; The Key Laboratory of Microbial Resources of Xuzhou City, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, PR China
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Abdallah MAM, Alprol AE. Utilization of aquatic biomass as biosorbent for sustainable production of high surface area, nano- microporous, for removing two dyes from wastewater. Sci Rep 2024; 14:4471. [PMID: 38396122 PMCID: PMC10891161 DOI: 10.1038/s41598-024-54539-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 02/14/2024] [Indexed: 02/25/2024] Open
Abstract
The majority of environmental researchers are becoming increasingly concerned with the manufacture of inexpensive adsorbents for the detoxification of industrial effluents. To address one of the significant and well-known pollution issues with certain drains that act as hotspots and contribute to coastal pollution in Alexandria, this study aims to develop an economical, ecologically friendly sorbent. This study assessed the efficacy of a biomass-coated magnetic composite and a magnetic active adsorbent for the removal of two dyes from an industrially contaminated sewer using a wetland plant (Phragmites australis). Using magnetic biosorbent, the biosorption of Xylenol orange and Congo red ions from polluted drain discharge in Abu Qir Bay was evaluated in the current study. Using scanning electron microscopy imaging and Fourier transform infra-red analysis; the surface function and morphology of the nano-biosorbent were examined. At room temperature, the effects of initial dye concentration, pH, contact time, and nano-biosorbent concentration have all been investigated. The greatest percentages that nano-biosorbent can remove from Congo red and Xylenol orange are 97% and 47%, respectively. The removal of the initial Congo red concentration varied from 42 to 97%, while the removal of the initial Xylenol orange concentration varied from 30 to 47%. The adsorption capacity was shown to be strongly pH-dependent; capacity dose as pH value increased, with pH 10 being the ideal pH for Congo red and pH 6 being the ideal pH value for Xylenol orange. The adsorption capacity for Congo red varied between 0.96 and 3.36 and the adsorption capacity for Xylenol orange varied between 0.18 and 17.58. The removal capacity decreased from 3.36 to 0.96 mg/g when the biosorbent dosage was increased from 0.05 to 0.5 g/L for Congo red, in case of Xylenol orange, the removal capacity increased from 0.18 to 17.58 mg/g when the biosorbent dosage was increased from 0.05 to 0.5 g/L. The removal capacity of Congo red increases quickly with time and varied from 1.66 to 1.88 of contact time; while the removal capacity of Xylenol orange varied between 3.08 and 4.62 of contact time. For the dyes under study, kinetics and adsorption equilibrium were examined. Within 180 min, the equilibrium was attained because to the quick adsorption process. For Congo red and Xylenol orange, the highest adsorption capacities were 3.36 and 17.58 mg g-1, respectively. The equilibrium data were assessed using a number of isotherm models, including Langmuir, Freundlich, BET, and Tempkin, while the kinetic data were examined using a variety of kinetic models, including pseudo-first- and pseudo-second-order equations. The pseudo-second-order equation provides the greatest accuracy for the kinetic data and Langmuir model is the closest fit for the equilibrium data.
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Affiliation(s)
| | - Ahmed E Alprol
- National Institute of Oceanography and Fisheries, NIOF, Cairo, Egypt
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Sundhar S, Arisekar U, Shakila RJ, Shalini R, Al-Ansari MM, Al-Dahmash ND, Mythili R, Kim W, Sivaraman B, Jenishma JS, Karthy A. Potentially toxic metals in seawater, sediment and seaweeds: bioaccumulation, ecological and human health risk assessment. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:35. [PMID: 38227063 DOI: 10.1007/s10653-023-01789-0] [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: 10/17/2023] [Accepted: 11/25/2023] [Indexed: 01/17/2024]
Abstract
This study assesses the bioaccumulation, ecological, and health risks associated with potentially toxic metals (PTMs), including Pb, Hg, Cd, As, and Cr in Hare Island, Thoothukudi. The results revealed that the concentration of PTMs in sediment, seawater, and S. wightii ranged from 0.095 to 2.81 mg kg-1, 0.017 to 1.515 mg L-1, and 0.076 to 5.713 mg kg-1, respectively. The highest concentrations of PTMs were found in the S. wightii compared to seawater and sediment. The high bioaccumulation of Hg and As in S. wightii suggests that it can be used as a bioindicator for these elements in this region. The ecological risk indices, which include individual, complex, biological, and ecological pollution indices, suggest that Hare Island had moderate contamination with Hg and Cd. However, there are no human health risks associated with PTMs. This study examines the current ecological and health risks associated with PTMs and emphasizes the importance of regular monitoring.
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Affiliation(s)
- Shanmugam Sundhar
- Department of Fish Quality Assurance and Management, Fisheries College and Research Institute, Tamil Nadu Dr. J. Jayalalithaa Fisheries University (TNJFU), Tamil Nadu, Tuticorin, 628 008, India.
| | - Ulaganathan Arisekar
- Department of Fish Quality Assurance and Management, Fisheries College and Research Institute, Tamil Nadu Dr. J. Jayalalithaa Fisheries University (TNJFU), Tamil Nadu, Tuticorin, 628 008, India.
| | - Robinson Jeya Shakila
- Department of Fish Quality Assurance and Management, Fisheries College and Research Institute, Tamil Nadu Dr. J. Jayalalithaa Fisheries University (TNJFU), Tamil Nadu, Tuticorin, 628 008, India
| | - Rajendran Shalini
- Department of Fish Quality Assurance and Management, Fisheries College and Research Institute, Tamil Nadu Dr. J. Jayalalithaa Fisheries University (TNJFU), Tamil Nadu, Tuticorin, 628 008, India
| | - Mysoon M Al-Ansari
- Department of Botany and Microbiology, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Nora Dahmash Al-Dahmash
- Department of Botany and Microbiology, College of Science, King Saud University, 11451, Riyadh, Saudi Arabia
| | - R Mythili
- Department of Pharmacology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 600 077, India
| | - Woong Kim
- Department of Environmental Engineering, Kyungpook National University, Daegu, South Korea
| | - Balasubramanian Sivaraman
- Department of Fish Quality Assurance and Management, Fisheries College and Research Institute, Tamil Nadu Dr. J. Jayalalithaa Fisheries University (TNJFU), Tamil Nadu, Tuticorin, 628 008, India
| | - J S Jenishma
- Department of Fisheries and Fisherman Welfare, Govt. of Tamil Nadu, Tuticorin, India
| | - Arjunan Karthy
- Department of Fish Quality Assurance and Management, Fisheries College and Research Institute, Tamil Nadu Dr. J. Jayalalithaa Fisheries University (TNJFU), Tamil Nadu, Tuticorin, 628 008, India
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Firdous KA, Vivek PJ, Neethu K, Resmi MS. Physio-anatomical modifications and element allocation pattern in Alternanthera tenella Colla. associated with phytoextraction of chromium. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:5784-5806. [PMID: 38129728 DOI: 10.1007/s11356-023-31597-z] [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: 03/07/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023]
Abstract
Intensive industrial activities have elevated chromium (Cr) concentrations in the environment, particularly in soil and water, posing a significant threat due to its cytotoxic and carcinogenic properties. Phytoremediation has emerged as a sustainable and economical alternative for detoxifying pollutants. In this context, an attempt has been made to assess the efficacy of Cr remediation by the invasive plant Alternanthera tenella Colla. The study investigated morphological, anatomical, and physiological adaptations in plant tissues in response to 240 µM of K2Cr2O7, considering elemental distribution patterns and bioaccumulation potential. Growth parameter assessments revealed a notable 50% reduction in root elongation and biomass content; however, the plant exhibited a comparatively higher tolerance index (47%) under Cr stress. Chromium significantly influenced macro and micro-elemental distribution in plant tissues, particularly in roots and leaves. Structural modifications, including changes in the thickness and diameter of xylem walls in the root, stem, and leaf tissues of Cr-treated A. tenella, were observed. Distinct cell structural distortions and Cr deposit inclusions in the xylem wall and inner parenchyma cells were distinct. Under Cr stress, there was a reduction in pigment content and metabolites such as proteins and soluble sugars, while proline, phenol, and malondialdehyde showed a twofold increase. The concentration of Cr was higher in the shoots of A. tenella (185.7 mg/kg DW) than in the roots (179.625 mg/kg DW). With a high BCFroot value (16.23) and TF > 1, coupled with effective mechanisms to cope with metal stress, A. tenella emerges as an ideal candidate for chromium phytoextraction.
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Affiliation(s)
| | | | - Kizhakkepurath Neethu
- Department of Botany, Sree Neelakanta Government Sanskrit College, Pattambi, Kerala, 679306, India
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13
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Qin X, Meng W, Cheng S, Xing B, Shi C, Nie Y, Wang Q, Xia H. Efficient removal of heavy metal and antibiotics from wastewater by phosphate-modified hydrochar. CHEMOSPHERE 2023; 345:140484. [PMID: 37863206 DOI: 10.1016/j.chemosphere.2023.140484] [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: 06/19/2023] [Revised: 09/24/2023] [Accepted: 10/17/2023] [Indexed: 10/22/2023]
Abstract
The preparation, characterization and adsorption performance of the phosphate-modified hydrochar (P-hydrochar) for Pb(II) and ciprofloxacin removal are investigated. Pb(II) and ciprofloxacin adsorption behavior fit well with the Hill model with the adsorption capacity of 119.61 and 98.38 mg/g, respectively. Pb(II) and ciprofloxacin adsorption kinetic process are accurately described by the Pseudo-second-order. Pb(II) and ciprofloxacin have synergy in the binary contaminant system, which reveals that Pb(II) adsorption amount is augmented. While ciprofloxacin adsorption amount is also augmented at low Pb(II) concentration and hindered at high Pb(II) concentration. Pb(II) adsorption mechanisms on P-hydrochar (e.g. precipitation, π-π interaction and complexation) are different from the ciprofloxacin (e.g. hydrogen bonding, pore filling, electrostatic attraction). Pb(II) and ciprofloxacin adsorption process are further analyzed by the density functional theory. The coexisted ions have little influenced on Pb(II) and ciprofloxacin adsorption. P-hydrochar still has large Pb(II) and ciprofloxacin adsorption capacity after five cycles. This result indicates that poplar sawdust waste can be converted into an efficient adsorbent to remove Pb(II) and ciprofloxacin from wastewater,.
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Affiliation(s)
- Xiaojing Qin
- School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo, 454003, China
| | - Weibo Meng
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, China
| | - Song Cheng
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, China; Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo, 454003, China.
| | - Baolin Xing
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, China; Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo, 454003, China
| | - Changliang Shi
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, China; Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo, 454003, China
| | - Yanhe Nie
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, China; Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo, 454003, China
| | - Qiang Wang
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, China; Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo, 454003, China
| | - Hongying Xia
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
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14
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Lach J, Okoniewska E. Adsorption of Chromium and Nickel Ions on Commercial Activated Carbon-An Analysis of Adsorption Kinetics and Statics. Molecules 2023; 28:7413. [PMID: 37959832 PMCID: PMC10650461 DOI: 10.3390/molecules28217413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 10/27/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023] Open
Abstract
The adsorption of nickel Ni(II) and chromium Cr(III) ions on the commercial activated carbons WG-12, F-300 and ROW 08, which differ in their pore structure and the chemical nature of their surfaces, were analyzed. The nickel ions Ni2+ were best adsorbed on the WG-12 activated carbon, which had the largest number of carboxyl and lactone groups on the surface of the activated carbons, and the largest specific surface area. Chromium, occurring in solutions with pH = 6 in the form of Cr(OH)2+ and Cr(OH)2+ cations, was best adsorbed on the ROW 08 Supra activated carbon, which is characterized by the highest values of water extract. The precipitation of chromium hydroxide in the pores of the activated carbon was the mechanism responsible for the high adsorption of Cr(III) on this carbon. For the other sorbents, the amount of carboxyl and lactone groups determined the amount of Cr(III) and Ni(II) adsorption. The adsorption kinetics results were described with PFO, PSO, Elovich and intraparticle diffusion models. The highest correlation coefficients for both the Cr(III) and Ni(II) ions were obtained using the PSO model. Among the seven adsorption isotherm models, very high R2 values were obtained for the Toth, Temkin, Langmuir and Jovanovic models. The Cr(III) ions were removed in slightly larger quantities than the Ni(II) ions. The capacities of the monolayer qm (calculated from the Langmuir isotherm) ranged from 55.85 to 63.48 mg/g for the Cr(III), and from 40.29 to 51.70 mg/g for the Ni(II) ions (pH = 6). The adsorption efficiency of Cr(III) and Ni(II) cations from natural waters with different degrees of mineralization (spring, weakly and moderately mineralized) was only a few percent lower than that from deionized water.
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Affiliation(s)
- Joanna Lach
- Faculty of Infrastructure and Environment, Czestochowa University of Technology, Brzeźnicka 60a, 42-200 Częstochowa, Poland;
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15
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Yen YW, Lee YL, Yu LY, Li CE, Shueng PW, Chiu HC, Lo CL. Fucoidan/chitosan layered PLGA nanoparticles with melatonin loading for inducing intestinal absorption and addressing triple-negative breast cancer progression. Int J Biol Macromol 2023; 250:126211. [PMID: 37562466 DOI: 10.1016/j.ijbiomac.2023.126211] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/20/2023] [Accepted: 08/05/2023] [Indexed: 08/12/2023]
Abstract
Melatonin and fucoidan are naturally active compounds that have been reported to have therapeutic benefits for patients receiving cancer treatment. However, both compounds face significant challenges, including physical, chemical, and biological metabolisms in the gastrointestinal tract, which limit their ability to achieve therapeutic concentrations at the tumor site. Furthermore, the effectiveness of melatonin and fucoidan as adjuvants in vivo is influenced by the route of administration through the digestive system and their accumulation at the endpoint of the tumor. In this study, we developed an oral administration of nanoparticle, MNPs@C@F, that consisted of PLGA nanoparticles modified with chitosan, to promote intestinal microfold cell transcytosis for the delivery of melatonin and fucoidan into tumors. The experimental results indicated that melatonin and fucoidan in the tumors could regulate the tumor microenvironment by decreasing P-gp, Twist, HIF-1α, and anti-inflammatory immune cell expression, and increasing cytotoxic T cell populations following doxorubicin treatment. This resulted in an increase in chemo-drug sensitivity, inhibition of distant organ metastasis, and promotion of immunogenic cell death. This study demonstrates a favorable co-delivery system of melatonin and fucoidan to directly reduce drug resistance and metastasis in TNBC.
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Affiliation(s)
- Yu-Wei Yen
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Yi-Lin Lee
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Lu-Yi Yu
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Cheng-En Li
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Pei-Wei Shueng
- Division of Radiation Oncology, Department of Radiology, Far Eastern Memorial Hospital, New Taipei City 220, Taiwan, ROC; Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Hsin-Cheng Chiu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing-Hua University, Hsinchu 300, Taiwan, ROC
| | - Chun-Liang Lo
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC; Medical Device Innovation and Translation Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC.
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16
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Mustafa FHA, Gad ElRab EKM, Kamel RM, Elshaarawy RFM. Cost-effective removal of toxic methylene blue dye from textile effluents by new integrated crosslinked chitosan/aspartic acid hydrogels. Int J Biol Macromol 2023; 248:125986. [PMID: 37506792 DOI: 10.1016/j.ijbiomac.2023.125986] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/17/2023] [Accepted: 07/23/2023] [Indexed: 07/30/2023]
Abstract
Chitosan/aspartic acid hydrogels were synthesized for MB dye removal from textile aqueous effluents with different ratios by gelation of chitosan with non-toxic gelling agent, crosslinker, glutaraldehyde (Glu). The obtained hydrogels were characterized by spectral and morphological techniques. The characterization techniques confirmed successful preparations and MB dye adsorption. Batch experiments were done to investigate the effects of adsorbent dose, pH, contact time, temperature, and initial MB dye concentration. The optimum conditions were: adsorbent dose 0.1 g, pH 5, contact time 30 min, and temperature 25 °C for Chitosan-Aspartic Acid Hydrogel 1 (CSAA-HG1) and adsorbent dose 0.4 g, pH 2, contact time 60 min, temperature 25 °C for Chitosan-Aspartic Acid Hydrogel 2 (CSAA-HG2). Adsorption capacity of newly hydrogels CSAA-HG1,2 was compared with each other. Adsorption efficiencies reached 99.85 % for CSAA-HG1 and 99.88 % for CSAA-HG2. MB dye adsorption on CSAA-HG1,2 followed Freundlich isotherm model (R2 = 0.94 and 0.92, respectively). Both adsorbents exhibited pseudo-second-order kinetics for MB dye adsorption (R2 = 1). The negative ΔHo indicated that the MB dye adsorption was exothermic, negative ΔGo confirmed that MB dye adsorption process was spontaneous and low values of ∆So indicated low degree of freedom, ordered MB dye molecules on CSAA-HG1,2 surfaces.
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Affiliation(s)
- Fatma H A Mustafa
- National Institute of Oceanography and Fisheries (NIOF), Cairo, Egypt.
| | | | | | - Reda F M Elshaarawy
- Faculty of Science, Suez University, Suez, Egypt; Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf, Düsseldorf, Germany.
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Kumari B, Chauhan GS, Ranote S, Jamwal P, Kumar R, Kumar K, Chauhan S. KMnO 4-oxidized whole pine needle based adsorbent for selective and efficient removal of cationic dyes. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 26:178-192. [PMID: 37409646 DOI: 10.1080/15226514.2023.2231555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
In the present study, we report the chemical modification of the dried and fallen pine needles (PNs) via a simple protocol using KMnO4 oxidation. The oxidized PNs (OPNs) were evaluated as adsorbents using some cationic and anionic dyes. The successful synthesis of OPNs adsorbent was characterized by various techniques to ascertain its structural attributes. The adsorbent showed selectivity for the cationic dyes with 96.11% removal (Pr) for malachite green (MG) and 89.68% Pr for methylene blue (MB) in 120 min. Kinetic models namely, pseudo-first order, pseudo-second order, and Elovich were applied to have insight into adsorption. Additionally, three adsorption isotherms, i.e., Langmuir, Freundlich, and Temkin were also applied. The dye adsorption followed a pseudo-second-order kinetic model with R2 > 0.99912 for MG and R2 > 0.9998 for MB. The adsorbent followed the Langmuir model with a maximum adsorption capacity (qm) of 223.2 mg/g and 156.9 mg/g for MG and MB, respectively. Furthermore, the OPNs showed remarkable regeneration and recyclability up to nine adsorption-desorption cycles with appreciable adsorption for both the dyes. The use of OPNs as an adsorbent for the removal of dyes from wastewater, therefore, provides an ecologically benign, low-cost, and sustainable solution.
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Affiliation(s)
- Babita Kumari
- Department of Chemistry, Himachal Pradesh University, Shimla, India
| | | | - Sunita Ranote
- Department of Chemistry, Himachal Pradesh University, Shimla, India
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland
| | - Pooja Jamwal
- Department of Chemistry, Himachal Pradesh University, Shimla, India
| | - Rajesh Kumar
- Department of Chemistry, Jagdish Chandra DAV College, Dasuya, India
| | - Kiran Kumar
- Department of Chemistry, Himachal Pradesh University, Shimla, India
| | - Sandeep Chauhan
- Department of Chemistry, Himachal Pradesh University, Shimla, India
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18
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Shi W, Wang Z, Li F, Xu Y, Chen X. Multilayer adsorption of lead (Pb) and fulvic acid by Chlorella pyrenoidosa: Mechanism and impact of environmental factors. CHEMOSPHERE 2023; 329:138596. [PMID: 37023904 DOI: 10.1016/j.chemosphere.2023.138596] [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: 01/20/2023] [Revised: 03/26/2023] [Accepted: 04/02/2023] [Indexed: 05/03/2023]
Abstract
When the multilayer adsorption of lead (Pb) and fulvic acid (FA) occurs on algal surface, the adsorption capacity of Pb on the algae will increase dramatically, thus increasing the environmental risk of Pb. However, the corresponding mechanism and the influence of environmental factors on the multilayer adsorption remain unclear. Here, microscopic observation methods and batch adsorption experiments were exactly designed to investigate the adsorption behavior of multilayer adsorption of Pb and FA on algal surface. The results of Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) revealed that carboxyl groups were the major functional groups responsible for the binding of Pb ions in multilayer adsorption, and its number was more than that in monolayer adsorption. The solution pH, with an optimal pH of 7, was a critical factor influencing the occurrence of multilayer adsorption because it influences the protonation of the involved functional groups and determines the concentration of Pb2+ and Pb-FA in the solution. Increasing the temperature was beneficial for multilayer adsorption, with ΔH for Pb and FA varied from +17.12 to +47.68 kJ/mol and +16.19 to +57.74 kJ/mol, respectively. The multilayer adsorption of Pb and FA onto algal surface also followed the pseudo-second order kinetic model, but was extremely slower than the monolayer adsorption of Pb and FA by 30 times and 15 orders of magnitude, respectively. Therefore, the adsorption of Pb and FA in the ternary system had a different adsorption behavior than that in the binary system, which verified the presence of multilayer adsorption of Pb and FA and further support the multilayer adsorption mechanism. This work is important to provide data support for water ecological risk prevention and control of heavy metals.
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Affiliation(s)
- Wen Shi
- Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China; Zhejiang University of Technology, College of Environment, Hangzhou, 310014, China
| | - Zhiwei Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Detection for Pesticide Residues and Control of Zhejiang, Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Feili Li
- Zhejiang University of Technology, College of Environment, Hangzhou, 310014, China.
| | - Yuxin Xu
- Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Xijing Chen
- Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
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19
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Jin SR, Cho BG, Mun SB, Kim SJ, Cho CW. Investigation on the adsorption affinity of organic micropollutants on seaweed and its QSAR study. ENVIRONMENTAL RESEARCH 2023:116349. [PMID: 37290627 DOI: 10.1016/j.envres.2023.116349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/19/2023] [Accepted: 06/06/2023] [Indexed: 06/10/2023]
Abstract
Seaweed, one of the most abundant biomaterials, can be used as a biosorbent to remove organic micropollutants. In order to effectively use seaweed to remove a variety of micropollutants, it is vital to rapidly estimate the adsorption affinity according to the types of micropollutants. Thus, the isothermal adsorption affinities of 31 organic micropollutants in neutral or ionic form on seaweed were measured, and a predictive model using quantitative structure-adsorption relationship (QSAR) modeling was developed. As a result, it was found that the types of micropollutants had a significant effect on the adsorption of seaweed, as expected, and QSAR modeling with a predictability (R2) of 0.854 and a standard error (SE) of 0.27 log units using a training set could be developed. The model's predictability was internally and externally validated using leave-one-out cross validation and a test set. Its predictability for the external validation set was R2 = 0.864, SE = 0.171 log units. Using the developed model, we identified the most important driving forces of the adsorption at the molecular level: Coulomb interaction of the anion, molecular volume, and H-bond acceptor and donor, which significantly affect the basic momentum of molecules on the surface of seaweed. Moreover, in silico calculated descriptors were applied to the prediction, and the results revealed reasonable predictability (R2 of 0.944 and SE of 0.17 log units). Our approach provides an understanding of the adsorption process of seaweed for organic micropollutants and an efficient prediction method to estimate the adsorption affinities of seaweed and micropollutants in neutral and ionic forms.
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Affiliation(s)
- Se-Ra Jin
- Department of Bioenergy Science and Technology, Chonnam National University, Yongbong-ro 77, Buk-gu, 61186, Gwangju, Republic of Korea; Department of Integrative Food, Bioscience, and Biotechnology, Chonnam National University, Yongbong-ro 77, Buk-gu, 61186, Gwangju, Republic of Korea
| | - Bo-Gyeon Cho
- Department of Bioenergy Science and Technology, Chonnam National University, Yongbong-ro 77, Buk-gu, 61186, Gwangju, Republic of Korea; Department of Integrative Food, Bioscience, and Biotechnology, Chonnam National University, Yongbong-ro 77, Buk-gu, 61186, Gwangju, Republic of Korea
| | - Se-Been Mun
- Department of Bioenergy Science and Technology, Chonnam National University, Yongbong-ro 77, Buk-gu, 61186, Gwangju, Republic of Korea; Department of Integrative Food, Bioscience, and Biotechnology, Chonnam National University, Yongbong-ro 77, Buk-gu, 61186, Gwangju, Republic of Korea
| | - Soo-Jung Kim
- Department of Integrative Food, Bioscience, and Biotechnology, Chonnam National University, Yongbong-ro 77, Buk-gu, 61186, Gwangju, Republic of Korea.
| | - Chul-Woong Cho
- Department of Bioenergy Science and Technology, Chonnam National University, Yongbong-ro 77, Buk-gu, 61186, Gwangju, Republic of Korea; Department of Integrative Food, Bioscience, and Biotechnology, Chonnam National University, Yongbong-ro 77, Buk-gu, 61186, Gwangju, Republic of Korea.
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20
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Diaconu LI, Covaliu-Mierlă CI, Păunescu O, Covaliu LD, Iovu H, Paraschiv G. Phytoremediation of Wastewater Containing Lead and Manganese Ions Using Algae. BIOLOGY 2023; 12:773. [PMID: 37372058 DOI: 10.3390/biology12060773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/16/2023] [Accepted: 05/20/2023] [Indexed: 06/29/2023]
Abstract
Heavy metal pollution of water from industrial discharge is a major problem worldwide. Thus, the quality of the environment and human health are severely affected. Various conventional technologies have been applied for water treatment, but these can be expensive, especially for industrial water treatment, and may have limited treatment efficiencies. Phytoremediation is a method that is successfully applied to remove metal ions from wastewater. In addition to the high efficiency of the depollution treatment, this method has the advantages of a low cost of the operation and the existence of many plants that can be used. This article presents the results of using algae (Sargassum fusiforme and Enteromorpha prolifera) to treat water containing manganese and lead ions. It was observed that maximum efficiencies for wastewater treatment were obtained when was used the algae Enteromorpha prolifera for a 600 min contact time period. The highest wastewater treatment efficiency obtained using Sargassum fusiforme was 99.46%.
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Affiliation(s)
- Loredana Ioana Diaconu
- Faculty of Biotechnical Systems Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
| | - Cristina Ileana Covaliu-Mierlă
- Faculty of Biotechnical Systems Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
| | - Oana Păunescu
- Faculty of Biotechnical Systems Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
| | - Leon Dumitru Covaliu
- Faculty of Biotechnical Systems Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
| | - Horia Iovu
- Faculty of Chemical Engineering and Biotechnologies, University Politehnica of Bucharest, 1-7 Gheorghe POLIZU Street, Sector 1, 011061 Bucharest, Romania
| | - Gigel Paraschiv
- Faculty of Biotechnical Systems Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
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21
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Marin-Silva DA, Romano N, Damonte L, Giannuzzi L, Pinotti A. Hybrid materials based on chitosan functionalized with green synthesized copper nanoparticles: Physico-chemical and antimicrobial analysis. Int J Biol Macromol 2023; 242:124898. [PMID: 37207748 DOI: 10.1016/j.ijbiomac.2023.124898] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 05/09/2023] [Accepted: 05/12/2023] [Indexed: 05/21/2023]
Abstract
Recently, the development of materials with antimicrobial properties has become a challenge under scrutiny. The incorporation of copper nanoparticles (NpCu) into a chitosan matrix appears to represent a viable strategy to contain the particles and prevent their oxidation. Regarding the physical properties, the nanocomposite films (CHCu) showed a decrease in the elongation at break (5 %) and an increase in the tensile strength of 10 % concerning chitosan films (control). They also showed solubility values lower than 5 % while the swelling diminished by 50 %, on average. The dynamical mechanical analysis (DMA) of nanocomposites revealed two thermal events located at 113° and 178 °C, which matched the glass transitions of the CH-enriched phase and nanoparticles-enriched phase, respectively. In addition, the thermogravimetric analysis (TGA) detected a greater stability of the nanocomposites. Chitosan films and the NpCu-loaded nanocomposites demonstrated excellent antibacterial capacity against Gram-negative and Gram-positive bacteria, proved through diffusion disc, zeta potential, and ATR-FTIR techniques. Additionally, the penetration of individual NpCu particles into bacterial cells and the leakage of cell content were verified by TEM. The mechanism of the antibacterial activity of the nanocomposites involved the interaction of chitosan with the bacterial outer membrane or cell wall and the diffusion of the NpCu through the cells. These materials could be applied in diverse fields of biology, medicine, or food packaging.
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Affiliation(s)
- Diego Alejandro Marin-Silva
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CCT-CONICET La Plata, UNLP, CICPBA), 47 y 116 S/N, 1900 La Plata, Argentina
| | - Nelson Romano
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CCT-CONICET La Plata, UNLP, CICPBA), 47 y 116 S/N, 1900 La Plata, Argentina
| | - Laura Damonte
- Dto. de Física, UNLP-IFLP, CCT-CONICET La Plata, Argentina; Facultad de Ciencias Exactas, UNLP, La Plata, Argentina
| | - Leda Giannuzzi
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CCT-CONICET La Plata, UNLP, CICPBA), 47 y 116 S/N, 1900 La Plata, Argentina; Facultad de Ciencias Exactas, UNLP, La Plata, Argentina
| | - Adriana Pinotti
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CCT-CONICET La Plata, UNLP, CICPBA), 47 y 116 S/N, 1900 La Plata, Argentina; Facultad de Ingeniería, UNLP, La Plata, Argentina.
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22
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Zhou K, Zhou Y, Zhou H, Cheng H, Xu G. Kinetic process of the biosorption of Cu(II), Ni(II) and Cr(VI) by waste Pichia pastoris cells. ENVIRONMENTAL TECHNOLOGY 2023; 44:1730-1750. [PMID: 34842065 DOI: 10.1080/09593330.2021.2012266] [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: 06/27/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Abstract
Waste biomass of Pichia pastoris (P.pastoris) cells from the fermentation industry is an environmentally friendly biosorption material. The present study aimed to explore the biosorption behaviour of waste P.pastoris cells for Cu(II), Ni(II) and Cr(VI) in aqueous solution conditions. The results showed that the adsorption kinetics of three kinds of metals were well-fitted with lineared Elovich, pseudo-second-order kinetics models, non-linear kinetics and adsorption isotherms. The effective biosorption rates for Cu(II), Ni(II) and Cr(VI) removal were 71.3%, 59.7% and 16.25% respectively. The maximum Cu(II) adsorption capacity of waste P.pastoris was 40 mg/g at pH = 4 and 225 mg/L of solute concentration for 0.4 g biomass, better than that of the living yeasts. The pattern of Fourier transform infrared (FTIR) indicated that functional groups such as -NH, -OH, Si-O, P-O-C were involved in Cu(II) adsorption process. The analysis of SEM-EDS, XRD and TEM-EDS can be concluded that Cu(II) occupied Ca(II) binding sites by ion exchange mechanism to remove flocculation, and Cu(II) adsorbed onto the diatomite containing in the industrial waste P.pastoris. Thus the adsorption mechanism of the industrial waste P.pastoris was proposed taking Cu(II) as the example. And consecutive biosorption/desorption cycles were used for the evaluation of the regeneration efficiency, suggesting the good regeneration and reusability of waste P.pastoris.
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Affiliation(s)
- Kaiyan Zhou
- School of Minerals Processing and Bioengineering, Central South University, Changsha, People's Republic of China
| | - Yulu Zhou
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, People's Republic of China
| | - Hongbo Zhou
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, People's Republic of China
| | - Haina Cheng
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, People's Republic of China
| | - Gang Xu
- Hunan Flag Bio-Tech Co., Ltd., Changsha, People's Republic of China
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23
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Soleymani F, Khani MH, Pahlevanzadeh H, Amini Y. Intensification of strontium (II) ion biosorption on Sargassum sp via response surface methodology. Sci Rep 2023; 13:5403. [PMID: 37012342 PMCID: PMC10070446 DOI: 10.1038/s41598-023-32532-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
A batch system was employed to investigate the biosorption of strontium (II) on Sargassum sp. The biosorption of strontium on Sargassum sp was studied with response surface methodology to determine the combined effect of temperature, initial metal ion concentration, biomass treatment, biosorbent dosage and pH. Under optimal conditions, the algae's biosorption capacity for strontium (initial pH 7.2, initial strontium concentration 300 mg/l for Mg-treated biomass and biosorbent dosage 0.1 g in 100 mL metal solution) was measured at 103.95 mg/g. In our analysis, equilibrium data were fitted to Langmuir and Freundlich isotherms. Results show that the best fit is provided by the Freundlich model. Biosorption dynamics analysis of the experimental data indicated that strontium (II) was absorbed into algal biomass in accordance with the pseudo-second-order kinetics model well.
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Affiliation(s)
- F Soleymani
- Chemical Engineering Department, Tarbiat Modares University, P.O. Box 14155-143, Tehran, Iran
| | - M H Khani
- Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, P.O. Box 11365-8486, Tehran, Iran.
| | - H Pahlevanzadeh
- Chemical Engineering Department, Tarbiat Modares University, P.O. Box 14155-143, Tehran, Iran
| | - Younes Amini
- Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, P.O. Box 11365-8486, Tehran, Iran.
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24
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Cho YL, Tzou YM, Wang CC, Lee YC, Hsu LC, Liu SL, Assakinah A, Chen YH, Thi Than NA, Liu YT, Rinklebe J. Removal and concurrent reduction of Cr(VI) by thermoacidophilic Cyanidiales: a novel extreme biomaterial enlightened for acidic and neutral conditions. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130334. [PMID: 36462243 DOI: 10.1016/j.jhazmat.2022.130334] [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: 07/27/2022] [Revised: 10/26/2022] [Accepted: 11/04/2022] [Indexed: 06/17/2023]
Abstract
Thermoacidophilic Cyanidiales maintain a competitive edge in inhabiting extreme environments enriched with metals. Here, species of Cyanidioschyzon merolae (Cm), Cyanidium caldarium (Cc), and Galdieria partita (Gp) were exploited to remove hexavalent chromium [Cr(VI)]. Cm and Gp could remove 168.1 and 93.7 mg g-1 of Cr(VI) at pH 2.0 and 7.0, respectively, wherein 89% and 62% of sorbed Cr on Cm and Gp occurred as trivalent chromium [Cr(III)]. Apart from surface-sorbed Cr(VI), the in vitro Cr(III) bound with polysaccharide and in vivo chromium(III) hydroxide [Cr(OH)3] attested to the reduction capability of Cyanidiales. The distribution of Cr species varied as a function of sorbed Cr amount, yet a relatively consistent proportion of Cr(OH)3, irrespective of Cr sorption capacity, was found only on Cm and Cc at pH 2.0. In conjunction with TXM (transmission X-ray microscopy) images that showed less impaired cell integrity and possible intracellular Cr distribution on Cm and Cc at pH 2.0, the in vivo Cr(OH)3 might be the key to promoting the Cr sorption capacity (≥ 152 mg g-1). Cyanidiales are promising candidates for the green and sustainable remediation of Cr(VI) due to their great removal capacity, the spontaneous reduction under oxic conditions, and in vivo accumulation.
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Affiliation(s)
- Yen-Lin Cho
- Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 40227, Taiwan
| | - Yu-Min Tzou
- Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 40227, Taiwan; Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, Taichung 40227, Taiwan
| | - Chun-Chieh Wang
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Yao-Chang Lee
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Liang-Ching Hsu
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Shao-Lun Liu
- Department of Life Science, Tunghai University, Taichung 40704, Taiwan
| | - Afifah Assakinah
- Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 40227, Taiwan
| | - Yu-Hsien Chen
- Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 40227, Taiwan
| | - Nhu Anh Thi Than
- Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 40227, Taiwan
| | - Yu-Ting Liu
- Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 40227, Taiwan; Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, Taichung 40227, Taiwan.
| | - Jörg Rinklebe
- Laboratory of Soil, and Groundwater-Management, Institute of Foundation Engineering, Water, and Waste, Management, School of Architecture and Civil Engineering, University of Wuppertal, Wuppertal 42285, Germany
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25
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Carreira AR, Schaeffer N, Passos H, Coutinho JA. Sorption as a pre-concentration step for metal ions recovery in multi-elemental systems. Chem Eng Res Des 2023. [DOI: 10.1016/j.cherd.2023.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
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26
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Chen F, Ma J, Zhong Z, Liu H, Miao A, Zhu X, Pan K. Silicon Limitation Impairs the Tolerance of Marine Diatoms to Pristine Microplastics. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:3291-3300. [PMID: 36799767 DOI: 10.1021/acs.est.2c09305] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Marine diatoms are currently facing increasing threats from microplastic (MP) pollution that is intertwined with the disturbed nutrient stoichiometry in seawater. The effects of nutrient imbalances such as silicon (Si) limitation on the interactions between diatoms and MPs remain poorly understood. In contrast to previous studies which mainly focused on MP toxicity, this study emphasizes how Si availability affects nano-scale interactions between pristine polystyrene MPs and diatom surfaces. Results showed that Si-starved cells were less tolerant to MP toxicity than the Si-enriched counterparts. Si limitation significantly changed the configuration and chemical composition of the perforated frustules, forming less negatively charged, more adhesive, and mechanically weaker cells. All of these changes facilitated the adsorption and hetero-aggregation between the diatom cells and MPs and compromised the diatoms' resistance to MP attack. Our study provides novel insights into the effects of pristine MPs in the marine environment under the context of dynamic nutrient conditions.
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Affiliation(s)
- Fengyuan Chen
- SZU-HKUST Joint PhD Program in Marine Environmental Science, Shenzhen University, Shenzhen 518060, Guangdong Province, China
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, Guangdong Province, China
| | - Jie Ma
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, Guangdong Province, China
| | - Zihan Zhong
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, Guangdong Province, China
| | - Hongbin Liu
- Department of Ocean Science, The Hong Kong University of Science and Technology, Hong Kong 999077, Special Administrative Region, China
| | - Aijun Miao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu Province 210023, China
| | - Xiaoshan Zhu
- College of Ecology and Environment, Hainan University, Haikou 570228, Hainan, China
| | - Ke Pan
- SZU-HKUST Joint PhD Program in Marine Environmental Science, Shenzhen University, Shenzhen 518060, Guangdong Province, China
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen 518060, Guangdong Province, China
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27
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Li M, Liu D, Wang S, Guo H, Losic D, Deng L, Wu S, Yuan P. Efficient removal of Cd 2+ by diatom frustules self-modified in situ with intercellular organic components. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 319:121005. [PMID: 36608731 DOI: 10.1016/j.envpol.2023.121005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/28/2022] [Accepted: 01/02/2023] [Indexed: 06/17/2023]
Abstract
The organic modification of three-dimensional porous diatom frustules (biosilica) and their fossils (diatomite) is promising in heavy metal adsorption. However, the preparation of such materials involves complex processes, high costs, and environmental hazards. In this study, organic-biosilica composites based on in situ self-modification of diatoms were prepared by freeze-drying pretreatment. Freeze-drying resulted in the release of the intercellular organic components of diatoms, followed by loading on the surface of their diatom frustules. The bio-adsorbent exhibits outstanding Cd2+ adsorption capacity (up to 220.3 mg/g). The adsorption isotherms fitted the Langmuir model and the maximum adsorption capacity was 4 times greater than that of diatom biosilica (54.1 mg/g). The adsorption kinetics of Cd2+ was adequately described by a pseudo-second-order model and reached equilibrium within 30 min. By combining focused ion beam thinning with transmission electron microscopy-energy dispersive X-ray spectroscopy, the internal structure of the composite and the Cd2+ distribution were investigated. The results showed that the organic matter of the composite adsorbed approximately 10 times more Cd2+ than inorganic biosilica. The adsorption mechanism was dominated by complexation between the abundant organic functional groups (amide, carboxyl, and amino groups) on the surfaces of composite and Cd2+. The bio-adsorbent was demonstrated to have wide applicability in the presence of competitive cations (Na+, K+, Ca2+, and Mg2+) and under a wide range of pH (3-10) conditions. Thus, the self-modification of diatoms offers a promising organic-inorganic composite for heavy metal remediation.
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Affiliation(s)
- Mengyuan Li
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Dong Liu
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China; State Key Laboratory of Marine Environmental Science (MEL), Xiamen University, Xiamen, 361012, China.
| | - Shun Wang
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China; Neutron Science Platform, Songshan Lake Materials Laboratory, Dongguan, 523808, China
| | - Haozhe Guo
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Liangliang Deng
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Shijun Wu
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Peng Yuan
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China; School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
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28
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Chang CC, Tseng CC, Han TW, Barus BS, Chuech JY, Cheng SY. Effects of Lead and Zinc Exposure on Uptake and Exudation Levels, Chlorophyll-a, and Phycobiliproteins in Sarcodia suiae. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:2821. [PMID: 36833518 PMCID: PMC9957063 DOI: 10.3390/ijerph20042821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 01/27/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
The present study aimed to determine the changes in the biosorption, bioaccumulation, chlorophyll-a (chl-a), phycobiliproteins, and exudation in the red seaweed Sarcodia suiae exposed to lead and zinc. The seaweed was exposed to ambient lead and zinc environments for 5 days before being transferred to fresh seawater, and the changes in biodesorption, biodecumulation, chl-a, and phycobiliprotein levels in S. suiae were investigated. Lead and zinc biosorption and bioaccumulation in the seaweed increased with the increase in the lead and zinc concentrations and exposure times. Meanwhile, the biosorption and bioaccumulation of zinc in the seaweed following exposure to zinc were significantly higher (p < 0.05) than the biosorption and bioaccumulation of lead in the seaweed following exposure to lead with the same concentration at each exposure time. The chl-a, phycoerythrin (PE), phycocyanin (PC), and allophycocyanin (APC) contents in the seaweed significantly decreased with the increase in the lead and zinc concentrations and exposure times. The chl-a, PE, PC, and APC contents in S. suiae, which was exposed to 5 Pb2+ mg/L for 5 days, were significantly higher (p < 0.05) than those in the seaweed exposed to zinc at the same concentration and for the same exposure times. In the lead and zinc exudation tests, the highest biodesorption and biodecumulation were observed on the 1st day of exudation after the seaweed was transferred to fresh seawater. The residual percentages of the lead and zinc in the seaweed cells were 15.86% and 73.08% after 5 days of exudation, respectively. The biodesorption rate and biodecumulation rate of the seaweed exposed to lead were higher than those of the seaweed exposed to zinc. However, the effect of lead on chl-a and phycobiliproteins was greater than that of zinc. This might be the result of lead not being a necessary metal for these algae, whereas zinc is.
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Affiliation(s)
- Chia-Ching Chang
- Department of Dentistry, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung City 81342, Taiwan
| | - Chung-Chih Tseng
- Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung City 81342, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung City 80424, Taiwan
| | - Tai-Wei Han
- Department of Environmental Biology and Fisheries Science, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Beta Susanto Barus
- Department of Environmental Biology and Fisheries Science, National Taiwan Ocean University, Keelung 20224, Taiwan
- Department of Marine Science, Faculty of Mathematic and Natural Science, Sriwijaya University, Indralaya 30662, Indonesia
| | - Jhih-Yang Chuech
- Department of Environmental Biology and Fisheries Science, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Sha-Yen Cheng
- Department of Environmental Biology and Fisheries Science, National Taiwan Ocean University, Keelung 20224, Taiwan
- Center of Excellence for Ocean Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan
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Carreira ARF, Veloso T, Macário IPE, Pereira JL, Ventura SPM, Passos H, Coutinho JAP. The role of biomass elemental composition and ion-exchange in metal sorption by algae. CHEMOSPHERE 2023; 314:137675. [PMID: 36586444 DOI: 10.1016/j.chemosphere.2022.137675] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/17/2022] [Accepted: 12/25/2022] [Indexed: 06/17/2023]
Abstract
The use of macroalgae, microalgae and cyanobacteria for metal sorption has been widely reported. Still, there are no studies allowing a direct comparison of the performance of these biomasses, especially while evaluating metal competition. The simultaneous sorption of Co2+, Cu2+, Ni2+ and Zn2+ present in a multi-elemental solution by six macroalgae, two microalgae and three cyanobacteria was evaluated. Brown macroalgae were shown to be the most promising biosorbent, with Undaria pinnatifida having a total metal sorption capacity of 0.6 mmol g-1. Overall, macroalgae performed better than microalgae, followed by cyanobacteria. Carboxyl groups were identified as being the main functional groups involved in metal sorption, and all biomass samples were found to be selective to Cu2+. This was linked not only to its higher complexation constant value with relevant functional groups when compared to the remaining metals, but also the Irving-Williams series. The release of K+ and Ca2+ to the aqueous solution during the metal sorption was followed. The obtained results suggest they are readily exchanged with metals in the solution, indicating the occurrence of an ion-exchange mechanism in metal sorption by most biomass. Red macroalgae are an exception to the reported trends, suggesting that their metal sorption mechanism may differ from the other biomass types.
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Affiliation(s)
- Ana R F Carreira
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Telma Veloso
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal; Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
| | - Inês P E Macário
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal; Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
| | - Joana L Pereira
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal; Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal
| | - Sónia P M Ventura
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Helena Passos
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - João A P Coutinho
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
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González Fernández LA, Navarro Frómeta AE, Carranza Álvarez C, Flores Ramírez R, Díaz Flores PE, Castillo Ramos V, Sánchez Polo M, Carrasco Marín F, Medellín Castillo NA. Valorization of Sargassum Biomass as Potential Material for the Remediation of Heavy-Metals-Contaminated Waters. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:2559. [PMID: 36767922 PMCID: PMC9915137 DOI: 10.3390/ijerph20032559] [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: 12/20/2022] [Revised: 01/23/2023] [Accepted: 01/27/2023] [Indexed: 06/12/2023]
Abstract
Sargassum algae has become a major environmental issue due to its abundance in the Pacific Ocean with hundreds of tons reaching the beaches of the Mexican Caribbean every year. This generates large quantities of decomposing organic matter that have a negative impact on the region's economy and ecosystems. Sargassum valorization has turned out to be a fundamental aspect to mitigate its environmental impact. This study proposes the use and application of untreated Sargassum biomass for the decontamination of waters polluted with lead (Pb) and cadmium (Cd) through single and binary adsorption tests. Physicochemical and textural properties examined by SEM, XRD, and FT-IR elucidated that Sargassum biomass is viable to be used as a potential environmental benign adsorbent, exhibiting Cd(II) and Pb(II) adsorption capacities as high as 240 mg g-1 and 350 mg g-1, respectively, outperforming conventionally used adsorbents. This is attributed to its morphology, favorable surface charge distribution, and the presence of -OH and -COH groups. A strong affinity between the biomass and metal pollutants was evidenced by a thermodynamics study, showing a spontaneous and endothermic process. This work sets a practical route for the utilization of the Sargassum biomass, demonstrating its applicability as a potential material for heavy-metal-polluted water remediation, making a substantial contribution to a circular economy system.
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Affiliation(s)
- Lázaro Adrián González Fernández
- Multidisciplinary Postgraduate Program in Environmental Sciences, University Zone, Av. Manuel Nava 201, 2nd. Floor, San Luis Potosí 78000, Mexico
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, 18071 Granada, Spain
| | - Amado Enrique Navarro Frómeta
- Food and Environmental Technology Department, Technological University of Izúcar de Matamoros, De Reforma 168, Campestre la Paz, Izúcar de Matamoros 74420, Mexico
| | - Candy Carranza Álvarez
- Multidisciplinary Postgraduate Program in Environmental Sciences, University Zone, Av. Manuel Nava 201, 2nd. Floor, San Luis Potosí 78000, Mexico
- Faculty of Professional Studies Huasteca Zone, Universidad Autónoma de San Luis Potosí, Romualdo del Campo 501, Rafael Curiel, Ciudad Valles 79060, Mexico
| | - Rogelio Flores Ramírez
- Multidisciplinary Postgraduate Program in Environmental Sciences, University Zone, Av. Manuel Nava 201, 2nd. Floor, San Luis Potosí 78000, Mexico
- Coordination for the Innovation and Application of Science and Technology, Av. Sierra Leona # 550, Col. Lomas 2a. Sección, San Luis Potosí 78210, Mexico
| | - Paola Elizabeth Díaz Flores
- Multidisciplinary Postgraduate Program in Environmental Sciences, University Zone, Av. Manuel Nava 201, 2nd. Floor, San Luis Potosí 78000, Mexico
- Faculty of Agronomy and Veterinary Medicine, Universidad Autónoma de San Luis Potosí, Carretera San Luis Potosí—Matehuala Km. 14.5 Ejido Palma de la Cruz, Soledad de Graciano Sánchez 78321, Mexico
| | - Ventura Castillo Ramos
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, 18071 Granada, Spain
| | - Manuel Sánchez Polo
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, 18071 Granada, Spain
| | - Francisco Carrasco Marín
- Department of Inorganic Chemistry, Faculty of Science, University of Granada, 18071 Granada, Spain
| | - Nahum Andrés Medellín Castillo
- Multidisciplinary Postgraduate Program in Environmental Sciences, University Zone, Av. Manuel Nava 201, 2nd. Floor, San Luis Potosí 78000, Mexico
- Center for Research and Postgraduate Studies, Faculty of Engineering, Universidad Autónoma de San Luis Potosí, Dr.Manuel Nava No. 8, West University Zone, San Luis Potosí 78290, Mexico
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Dubashynskaya NV, Gasilova ER, Skorik YA. Nano-Sized Fucoidan Interpolyelectrolyte Complexes: Recent Advances in Design and Prospects for Biomedical Applications. Int J Mol Sci 2023; 24:ijms24032615. [PMID: 36768936 PMCID: PMC9916530 DOI: 10.3390/ijms24032615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 01/27/2023] [Accepted: 01/27/2023] [Indexed: 01/31/2023] Open
Abstract
The marine polysaccharide fucoidan (FUC) is a promising polymer for pharmaceutical research and development of novel drug delivery systems with modified release and targeted delivery. The presence of a sulfate group in the polysaccharide makes FUC an excellent candidate for the formation of interpolyelectrolyte complexes (PECs) with various polycations. However, due to the structural diversity of FUC, the design of FUC-based nanoformulations is challenging. This review describes the main strategies for the use of FUC-based PECs to develop drug delivery systems with improved biopharmaceutical properties, including nanocarriers in the form of FUC-chitosan PECs for pH-sensitive oral delivery, targeted delivery systems, and polymeric nanoparticles for improved hydrophobic drug delivery (e.g., FUC-zein PECs, core-shell structures obtained by the layer-by-layer self-assembly method, and self-assembled hydrophobically modified FUC particles). The importance of a complex study of the FUC structure, and the formation process of PECs based on it for obtaining reproducible polymeric nanoformulations with the desired properties, is also discussed.
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Improvement of Zn (II) and Cd (II) Biosorption by Priestia megaterium PRJNA526404 Isolated from Agricultural Waste Water. Microorganisms 2022; 10:microorganisms10122510. [PMID: 36557763 PMCID: PMC9782209 DOI: 10.3390/microorganisms10122510] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/08/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
Heavy metals are considered as dangerous pollutants even in relatively low concentrations. Biosorption is an ecofriendly technology that uses microbial biomasses for adsorbing heavy metals from wastewater on their surfaces based on physicochemical pathways. Ten agricultural wastewater samples were collected from different sites in Sohag Governorate, Egypt. One hundred and nineteen zinc and cadmium-resistant bacterial isolates were recovered from the water samples. Interestingly, the isolate R1 was selected as the most resistant to Zn2+ and Cd2+. This isolate was morphologically and biochemically characterized and identified by sequencing of 16S rRNA gene as Priestia megaterium, and then deposited in the GenBank database under the accession number PRJNA526404. Studying the effects of pH and contact time on the biosorption process revealed that the maximum biosorption was achieved within 50 min at pH 7 and 8 for Zn2+ and Cd2+, respectively, by the living and lyophelized biomass of Priestia megaterium PRJNA526404. The preliminary characterization of the main chemical groups present on the cell wall, which are responsible for heavy metal biosorption, was performed by Infrared analysis (IR). Kinetics studies revealed that data were fitted towards the models hypothesized by Langmuir and Freundlich isotherm equations. The maximum capacity values (qmax) for biosorption of zinc and cadmium reached by using living and lyophelized biomass were 196.08; 227.27 and 178.57; 212.777 mg/g, respectively, and it was indicated that lyophilization improved efficiency of the biomass to heavy metals compared to living cells. The results indicated that Priestia megaterium PRJNA526404 had good application prospect in cadmium and zinc water remediation.
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Balíková K, Farkas B, Matúš P, Urík M. Prospects of Biogenic Xanthan and Gellan in Removal of Heavy Metals from Contaminated Waters. Polymers (Basel) 2022; 14:polym14235326. [PMID: 36501719 PMCID: PMC9737242 DOI: 10.3390/polym14235326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/29/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
Biosorption is considered an effective technique for the treatment of heavy-metal-bearing wastewaters. In recent years, various biogenic products, including native and functionalized biopolymers, have been successfully employed in technologies aiming for the environmentally sustainable immobilization and removal of heavy metals at contaminated sites, including two commercially available heteropolysaccharides-xanthan and gellan. As biodegradable and non-toxic fermentation products, xanthan and gellan have been successfully tested in various remediation techniques. Here, to highlight their prospects as green adsorbents for water decontamination, we have reviewed their biosynthesis machinery and chemical properties that are linked to their sorptive interactions, as well as their actual performance in the remediation of heavy metal contaminated waters. Their sorptive performance in native and modified forms is promising; thus, both xanthan and gellan are emerging as new green-based materials for the cost-effective and efficient remediation of heavy metal-contaminated waters.
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El-Sheekh MM, Deyab MA, Hassan NI, Abu Ahmed SE. Bioadsorption of Fe (II) ions from aqueous solution using Sargassum latifolium aqueous extract and its synthesized silver nanoparticles. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2022; 25:1234-1247. [PMID: 36377265 DOI: 10.1080/15226514.2022.2145000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Algal extracts are used in the environmentally safe and economically advantageous biosynthesis of silver nanoparticles, which does not require the use of hazardous chemicals, high temperatures, pressures, or energies. In the current study, we created silver nanoparticles from the extract of the marine brown alga Sargassum latifolium, analyzed them with Transmission Electron Microscopy (TEM), FTIR, and UV-visible spectrophotometers, and used them to show how well they could remove Fe (II) ions from aqueous solutions. UV scan analyses of S. latifolium aqueous extract of silver nanoparticles showed a maximum peak at 450 nm. This peak is considered a characteristic peak for silver nanoparticles. Also, FTIR analysis of S. latifolium aqueous extract revealed various functional groups such as - OH, -NH, -CH, -COOH, CO, and C-C, which are responsible for bioadsorption of Fe (II). TEM also demonstrated that the synthesized nanoparticles were spherical, distinct, and regular, with particles size about 6.03-15.16 nm. S. latifolium aqueous extract silver nanoparticles were more effective than its aqueous extract in removing Fe (II) from an aqueous solution. The removal efficiency of Fe (II) by nanoparticles was 83%, while by the aqueous extract was 69%. The optimal conditions for bioadsorption of Fe (II) were pH 4, contact time 150, and adsorbent dose 0.01 g.
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Affiliation(s)
| | - Mohamed A Deyab
- Botany and Microbiology Department, Faculty of Science, Damietta University, Damietta, Egypt
| | - Nagwa I Hassan
- Botany and Microbiology Department, Faculty of Science, Damietta University, Damietta, Egypt
| | - Seham E Abu Ahmed
- Botany and Microbiology Department, Faculty of Science, Damietta University, Damietta, Egypt
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da Costa TB, da Silva MGC, Vieira MGA. Biosorption of rare-earth and toxic metals from aqueous medium using different alternative biosorbents: evaluation of metallic affinity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:79788-79797. [PMID: 34561807 DOI: 10.1007/s11356-021-16506-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Currently, the world faces difficulties related to the quantity and quality of water because of industrial expansion, population growth, and urbanization intensification. Biosorption is considered a promising technology that can be applied to remove toxic metals (TMs) and rare-earth metals (REMs) in wastewater at low concentrations, due to its efficiency and low cost. In this work, we investigated different non-conventional biosorbents to remove metallic ions (TMs and REMs) in biosorptive affinity tests. Metallic affinity assays among lanthanum and different biosorbents showed that greater affinities were found for sericin-alginate beads crosslinked with polyvinyl alcohol (SAPVA) (0.280 mmol/g) and polyethylene glycol diglycidyl ether (SAPEG) (0.277 mmol/g), expanded vermiculite (0.281 mmol/g), Sargassum filipendula seaweed (0.287 mmol/g), and seaweed biomass waste (0.289 mmol/g). Among the biosorbents evaluated, SAPVA and SAPEG beads, besides to sericin-alginate beads crosslinked with proanthocyanidins (SAPAs) were selected for affinity assays with other REMs and TMs. Compared to other particles, SAPVA beads showed higher potential for biosorption by REMs with the following order of affinity: Yb3+ > Dy3+ > Nd3+ > Ce3+ > La3+. Additionally, the biosorptive affinity of TMs by SAPVA beads followed the order: Al3+ > Cr3+ > Pb2+ > Cu2+ > Cd2+ > Zn2+ > Ni2+.
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Affiliation(s)
- Talles Barcelos da Costa
- School of Chemical Engineering, University of Campinas, Albert Einstein Avenue, Campinas, 13083-852, Brazil
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36
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Green biosynthesis of silver nanoparticles using sodium alginate extracted from Sargassum latifolium and their antibacterial activity. RENDICONTI LINCEI. SCIENZE FISICHE E NATURALI 2022. [DOI: 10.1007/s12210-022-01102-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractBrown seaweed Sargassum latifolium produces a sufficient amount of alginate. It is derived from the cell wall of seaweed as a natural anionic polysaccharide. In the present study, alginate was extracted from S. latifolium, its physicochemical properties, the potential for silver nanoparticles formation, characterization of alginate silver nanoparticles, and its antibacterial activity was studied. Physical analysis of extracted sodium alginate as colour (pale yellow), yield (25.34%), water content (13.17%), ash content (15.5%), and pH (8.6) were investigated. In addition, UV scan analyses of extracted alginate illustrated that the bioactive compounds separated in the range of 200–400 nm. On the other hand, ultraviolet–visible spectroscopy (UV–Vis) scan analysis of synthesized alginate silver nanoparticles gave a maximum peak at 413 nm. Besides that, Fourier Transforms Infrared spectroscopy (FT-IR) analysis of alginate, and alginate silver nanoparticles revealed a variety of functional groups, such as –OH, –NH, –CH, –COOH, CO, and C–C, and thermogravimetric analysis of extracted sodium alginate demonstrated thermal degradation occurs in two steps; Dehydration followed by degradation to Na2CO3 and a carbonized substance that breaks down slowly between 600 and 750 °C in N2. Biochemical contents, protein, and carbohydrate were receptively, respectively, and were 0.89 and 78.56 mg/g dry wt. Alginate silver nanoparticles recorded maximal antibacterial activity against Pseudomonas aeruginosa, Staphylococcus aureus, Klebsiella pneumonia, Escherichia coli, Bacillus subtilis, and Bacillus cereus more than alginate. On the other hand, alginate has no activity against E. coli.
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Liang SXT, Djearamane S, Tanislaus Antony Dhanapal AC, Wong LS. Impact of silver nanoparticles on the nutritional properties of Arthrospira platensis. PeerJ 2022; 10:e13972. [PMID: 36248713 PMCID: PMC9563293 DOI: 10.7717/peerj.13972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 08/09/2022] [Indexed: 01/19/2023] Open
Abstract
Background Arthrospira platensis is farmed worldwide due to its nutrient-rich properties and provides multiple benefits to human health. However, the wide usage of silver nanoparticles (Ag NPs) causes pollution which may affect the nutritional quality of A. platensis. Hence, this study aimed to investigate the interaction and accumulation of Ag NPs on A. platensis, and determine the changes in biomass and nutritional value of A. platensis due to the exposure to Ag NPs. Methods The interaction and accumulation of Ag NPs on A. platensis were examined through Fourier transformed infrared (FTIR) spectroscopy and scanning electron microscope (SEM). The loss in biomass together with the macromolecules, pigments, and phenolic compounds of A. platensis was investigated upon treating with various concentrations of Ag NPs (5, 10, 25, 50 and 100 µg/mL) for 24, 48, 72 and 96 h. Results The results showed that the treatment of A. platensis with Ag NPs caused a dose and time-dependent reduction in biomass, macronutrients, pigments and phenolic compounds. The highest detrimental effects were found at 96 h with the reported values of 65.71 ± 2.79%, 67.21 ± 3.98%, 48.99 ± 4.39% and 59.62 ± 3.96% reduction in biomass, proteins, carbohydrates and lipids, respectively, along with 82.99 ± 7.81%, 67.55 ± 2.63%, 75.03 ± 1.55%, and 63.43 ± 2.89% loss in chlorophyll-a, carotenoids, C-phycocyanin, and total phenolic compounds of A. platensis for 100 µg/mL of Ag NPs. The EDX analysis confirmed the surface accumulation of Ag NPs on Arthrospira cells, while SEM images evidenced the surface alterations and damage of the treated cells. The functional groups such as hydroxyl, amine, methyl, amide I, amide II, carboxyl, carbonyl and phosphate groups from the cell wall of the A. platensis were identified to be possibly involved in the interaction of Ag NPs with A. platensis. Conclusion The study confirmed that the exposure of Ag NPs is detrimental to A. platensis where the interaction and accumulation of Ag NPs on A. platensis caused reduction in biomass, macromolecules, pigments, and total phenolic compounds.
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Affiliation(s)
- Sharolynne Xiao Tong Liang
- Department of Biomedical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Kampar, Perak, Malaysia
| | - Sinouvassane Djearamane
- Department of Biomedical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Kampar, Perak, Malaysia
| | | | - Ling Shing Wong
- Faculty of Health and Life Sciences, INTI International University, Nilai, Negeri Sembilan, Malaysia
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Osório da Rosa L, Poleto L, Rodrigues LF, Fontana RC, Moser LI, Lanzer RM, Campos CS, Camassola M. Mycotechnology to remove of metals from tannery and galvanic effluents - Fungal species from the Amazon and Atlantic Forest show high efficiency. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 319:115677. [PMID: 35816960 DOI: 10.1016/j.jenvman.2022.115677] [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: 03/08/2022] [Revised: 07/01/2022] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Metals are considered one of the biggest environmental problems, due to their toxicity and the complexity of removal. This study evaluated the bioaccumulation capacity of water contaminating metals by fungal isolates of Lentinus and Panus species, to elucidate the bioremediation processes of metal contaminated effluents. Initially, tests were performed with fungal isolates using a mixture of metals, aluminum, iron, copper, lead, chromium, nickel and zinc. Lentinus crinitus 154L.21 was the most promising fungus for the removal of metals in the mixture. Based on these data, the potential application of this fungus for the treatment of galvanic and tannery effluents was evaluated. For galvanic effluent, no detectable copper, chromium, and nickel was removed; however, for tannery effluents, reductions in aluminum concentrations from 204.1 to 3.7 mg L-1 (≅98% removal), chromium from 1199.6 to 20.4 mg L-1 (≅98% removal) and iron from 22.6 mg L-1 (100% removal) to an amount lower than the detection limit were observed. These data indicated that L. crinitus 154L.21 removes metals from industrial effluents, being an important route for bioremediation processes.
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Affiliation(s)
- Letícia Osório da Rosa
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul (UCS), PO Box 1352, 95070-560, Caxias do Sul, RS, Brazil
| | - Liliane Poleto
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul (UCS), PO Box 1352, 95070-560, Caxias do Sul, RS, Brazil
| | - Luiz Frederico Rodrigues
- Institute of Petroleum and Natural Resources (IPR), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681 - Building 96J, 90619-900 Porto Alegre, RS, Brazil
| | - Roselei Claudete Fontana
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul (UCS), PO Box 1352, 95070-560, Caxias do Sul, RS, Brazil
| | - Leticia Isabela Moser
- Institute of Petroleum and Natural Resources (IPR), Pontifical Catholic University of Rio Grande do Sul (PUCRS), Av. Ipiranga, 6681 - Building 96J, 90619-900 Porto Alegre, RS, Brazil
| | - Rosane Maria Lanzer
- Laboratory of Toxicology and Limnology, Institute of Biotechnology, University of Caxias do Sul (UCS), PO Box 1352, 95070-560, Caxias do Sul, RS, Brazil
| | - Ceci Sales Campos
- Laboratory of Cultivation of Edible Fungi, National Institute for Research in the Amazon (INPA), Av. André Araújo, 2936, Caixa Postal: 478, 69011-970, Manaus, AM, Brazil
| | - Marli Camassola
- Enzymes and Biomass Laboratory, Institute of Biotechnology, University of Caxias do Sul (UCS), PO Box 1352, 95070-560, Caxias do Sul, RS, Brazil.
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Hasan MS, Karmakar AK. Removal of car battery heavy metals from wastewater by activated carbons: a brief review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:73675-73717. [PMID: 36085225 DOI: 10.1007/s11356-022-22715-4] [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: 06/24/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
Spent automobile batteries are one of the most significant secondary sources of harmful heavy metals for the environment. After being incorporated into the aquatic ecosystems, these metals disseminate to various plants, microorganisms, and the human body and cause multiple adverse effects. Activated carbons (ACs) have long been used as an effective adsorbent for different heavy metals in wastewater treatment processes. Although numerous research works have been published to date on this topic, they are scattered in the literature. In this review, we have assembled these works and provided an extensive overview of the application of ACs for treating spent car battery heavy metals (CBHMs) from aquatic systems. The preparation of ACs from different precursor materials, their application in the adsorption of CBHMs, the adsorption mechanism, kinetics, adsorption isotherms and various parameters that may affect the adsorption processes have been discussed in detail. A brief comparative analysis of the adsorption performances of ACs prepared from different precursor materials is also provided. Finally, recommendations for future research works are also offered.
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Affiliation(s)
- Md Saif Hasan
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Aneek Krishna Karmakar
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh.
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Lv X, Zhang Y, Wang X, Hu L, Shi C. Multilayer Graphene Oxide Supported ZIF-8 for Efficient Removal of Copper Ions. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3162. [PMID: 36144950 PMCID: PMC9503737 DOI: 10.3390/nano12183162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/05/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
To address the performance deterioration of ZIF-8 for the adsorption of copper ions caused by powder volume pressure and particle aggregation, we employed multilayer graphene oxide (MGO) as a support to prepare composite adsorbents (MGO@ZIF-8) by using the in situ growth of ZIF-8 on MGO. Due to a good interfacial compatibility and affinity between ZIF-8 and graphene nanosheets, the MGO@ZIF-8 was successfully prepared. The optimal Cu2+ adsorption conditions of MGO@ZIF-8 were obtained through single factor experiments and orthogonal experiments. Surprisingly, the Cu2+ adsorption capacity was significantly improved by the integration of MGO and ZIF-8, and the maximum Cu2+ adsorption capacity of MGO@ZIF-8 reached 431.63 mg/g under the optimal adsorption conditions. Furthermore, the kinetic fitting and isotherm curve fitting confirmed that the adsorption law of Cu2+ by MGO@ZIF-8 was the pseudo-second-order kinetic model and the Langmuir isotherm model, which indicated that the process of Cu2+ adsorption was monolayer chemisorption. This work provides a new approach for designing and constructing ZIF-8 composites, and also offers an efficient means for the removal of heavy metals.
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Affiliation(s)
- Xifeng Lv
- College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, China
- Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps, Alar 843300, China
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yishi Zhang
- College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, China
| | - Xiaodong Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Libing Hu
- College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, China
| | - Chunhui Shi
- College of Chemistry and Chemical Engineering, Tarim University, Alar 843300, China
- Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps, Alar 843300, China
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Wang Q, Wang Y, Tang J, Yang Z, Zhang L, Huang X. New insights into the interactions between Pb(II) and fruit waste biosorbent. CHEMOSPHERE 2022; 303:135048. [PMID: 35613637 DOI: 10.1016/j.chemosphere.2022.135048] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 05/15/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
Fruit waste is a sustainable biosorbent for heavy metal removal from wastewater. Elucidation of adsorption mechanism is imperative for the process control and development of effective adsorbents. In this study, watermelon rind (WR) exhibited selective and efficient Pb(II) adsorption with a maximum uptake of 230.5 mg/g at pH 5.0. The WR-packed bed column showed high Pb(II) uptake and robust durability over 10 adsorption-desorption cycles with long breakthrough time of 8-13 h (89-144 bed volume), and 95% of sequestered Pb(II) was rapidly desorbed in 1-2 h by 0.05 M HCl. Spectroscopic characterization by FTIR and XPS identified hydroxyl, carboxyl, amine, and ether groups as the binding sites for Pb(II) via the binding force of complexation. Physicochemical analysis showed that ion exchange with Mg2+ and Ca2+ accounted for 19% of Pb(II) adsorption by WR; electrostatic attraction and microprecipitation jointly contributed. Quantum chemistry simulation verified the interactions between Pb(II) and binding sites and revealed carboxyl was the preferential functional group. The findings corroborate the applicability of WR in scale-up Pb(II) removal/recovery from wastewater and elaborate the mechanisms of Pb(II) adsorption by the WR biosorbent. This also provides insights into the behavior of heavy metals in other liquid/solid interfaces.
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Affiliation(s)
- Qian Wang
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230, Odense M, Denmark.
| | - Yunlong Wang
- Key Laboratory of Protected Horticulture Engineering in Northwest, Ministry of Agriculture, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Junjie Tang
- Environmental Science and Engineering Program, Guangdong Technion-Israel Institute of Technology, 241 Daxue Road, Shantou, Guangdong, 515063, China
| | - Zi Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Li Zhang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Xiaowu Huang
- Environmental Science and Engineering Program, Guangdong Technion-Israel Institute of Technology, 241 Daxue Road, Shantou, Guangdong, 515063, China.
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Al-Wasidi AS, Naglah AM, Saad FA, Abdelrahman EA. Modification of silica nanoparticles with 1-hydroxy-2-acetonaphthone as a novel composite for the efficient removal of Ni(II), Cu(II), Zn(II), and Hg(II) ions from aqueous media. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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Chromium adsorption using Sargassum filipendula algae waste from alginate extraction: Batch and fixed-bed column studies. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100341] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Zhang R, Richardson JJ, Masters AF, Maschmeyer T. Removal of Pb 2+ from Water Using Sustainable Brown Seaweed Phlorotannins. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8324-8333. [PMID: 35758845 DOI: 10.1021/acs.langmuir.2c00849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Bioadsorption is a promising technology to sequester heavy metal ions from water, and brown seaweed has been identified as one of the most appropriate adsorbents as it is abundant, low cost, and efficient at removing various metal ion contaminations. The ability to remove heavy metals from water arises from the high concentration of polysaccharides and phlorotannins in brown seaweed; however, remediation can be hampered by the salinity, location, and coexistence of pollutants in the contaminated water. Maintaining the adsorbent properties of brown seaweed while avoiding the fragility of living organisms could allow for the development of better adsorbents. Herein, we demonstrate that polymerized phlorotannin particles, synthesized from phlorotannins extracted from a species of brown seaweed (Carpophyllum flexuosum), were able to remove 460 mg of Pb2+ from water per gram of adsorbent. Scanning electron microscopy (SEM), attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR), and thermogravimetric analysis (TGA) were used to characterize the polymerization process and the polymerized phlorotannin particles. Importantly, there was no direct correlation between the Pb2+ removal capacity and the phlorotannin content of various algal derivatives of three species of brown seaweed, C. flexuosum, Carpophyllum plumosum, and Ecklonia radiata, as all three had similar adsorption capacities despite differences in phlorotannin content. This work shows that naturally abundant, "green" materials can be used to help remediate the environment.
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Affiliation(s)
- Rui Zhang
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, Zhejiang Province, China
| | - Joseph J Richardson
- Department of Materials Engineering, School of Engineering, University of Tokyo, Tokyo 113-8656, Japan
| | - Anthony F Masters
- Laboratory of Advanced Catalysis for Sustainability, School of Chemistry F11, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Thomas Maschmeyer
- Laboratory of Advanced Catalysis for Sustainability, School of Chemistry F11, The University of Sydney, Sydney, New South Wales 2006, Australia
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Qin F, Amyot M, Bertolo A. Grazer-mediated regeneration of methylmercury, inorganic mercury, and other metals in freshwater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 829:154553. [PMID: 35304153 DOI: 10.1016/j.scitotenv.2022.154553] [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: 03/03/2022] [Revised: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 06/14/2023]
Abstract
Whereas it is well established that zooplankton can transfer various pollutants such as mercury (Hg) from primary producers to higher trophic levels, less is known on the effects of their activities on the recycling of Hg in aquatic ecosystems. Here, the impact of zooplankton grazing efficiency and excretion/egestion processes on metal concentrations in freshwater was investigated. Isotopically labeled algae (200HgCl2, Me198HgCl) was used as a food source and the transfer of the selected isotopes to the culture medium during grazing was measured. In parallel, the potential for the recycling of major ions and metals, including selected essential and non-essential metals, was investigated for this could help to track the effects of sloppy feeding. To highlight the role of feeding behavior, a large filter-feeder (Daphnia magna) was compared to a smaller selective feeder zooplankton taxon (calanoid copepods), with the latter being expected to cause more sloppy feeding than the former. The experiments demonstrated that zooplankton grazing of both taxa significantly influenced the concentrations of the particulate portion of both inorganic Hg (IHg) and monomethylmercury (MeHg) in water. In contrast, only Daphnia significantly increased the concentration of dissolved IHg, whereas the concentration of dissolved MeHg was not affected by either grazer. The results also suggested that both taxa affected the concentrations of dissolved Fe, Zn, SO42- and rare earth elements via sloppy feeding, whereas only Daphnia significantly increased the concentration of dissolved Cu via this mechanism. The effects of excretion/egestion were negligible except for dissolved IHg and Cu in Daphnia treatment. These results highlight a neglected pathway of IHg and MeHg recycling in the water column in freshwater ecosystems with potentially important consequences for trophic transfer.
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Affiliation(s)
- Fan Qin
- Centre de recherche sur les interactions bassins versants - écosystèmes aquatiques (RIVE) and Département des sciences de l'environnement, Université du Québec à Trois-Rivières, 3351 Boul. des Forges, C.P. 500, Trois-Rivières, QC G8Z 4M3, Canada; Groupe de Recherche Interuniversitaire en Limnologie (GRIL), Université de Montréal, Campus MIL, C.P. 6128, Succ. Centre-ville, Montréal, QC H3C 3J7, Canada
| | - Marc Amyot
- Groupe de Recherche Interuniversitaire en Limnologie (GRIL), Université de Montréal, Campus MIL, C.P. 6128, Succ. Centre-ville, Montréal, QC H3C 3J7, Canada; Département de sciences biologiques, Université de Montréal, Campus MIL, C.P. 6128, Succ. Centre-ville, Montréal, QC H3C 3J7, Canada
| | - Andrea Bertolo
- Centre de recherche sur les interactions bassins versants - écosystèmes aquatiques (RIVE) and Département des sciences de l'environnement, Université du Québec à Trois-Rivières, 3351 Boul. des Forges, C.P. 500, Trois-Rivières, QC G8Z 4M3, Canada; Groupe de Recherche Interuniversitaire en Limnologie (GRIL), Université de Montréal, Campus MIL, C.P. 6128, Succ. Centre-ville, Montréal, QC H3C 3J7, Canada.
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Tong Y, Yan Q, Gao S, Xiong B, Tang X, Liu Z, Li P, Huang M, Wang Z, Le X, Pei W, Dai Z, Xiong Z, Wang Y. Adsorption of Ni 2+ in aqueous solution by KMnO 4 modified biomass: investigation on adsorption kinetics and modification mechanism. ENVIRONMENTAL TECHNOLOGY 2022; 43:2855-2866. [PMID: 33736579 DOI: 10.1080/09593330.2021.1906328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/13/2021] [Indexed: 06/12/2023]
Abstract
In this study, KMnO4 modification was proved to effectively increase the Ni2+ adsorption capacity of biomass. In order to clarify the KMnO4 modification mechanism, the Ni2+ adsorption characteristics of KMnO4 modified corncob (PPCB) under adsorption time, pH and Ni2+ concentration were studied. The results showed that the adsorption was the pseudo second-order kinetic process, indicating that chemisorption was the dominated process, which followed the Langmuir isotherm model and the highest Ni2+ adsorption capacity of PPCB reached 35.6 mg/g. By KMnO4 modification, the corncob was oxidized to generate carboxylates, and the MnO2 (reduction product) was loaded on the modified corncob, both carboxylates and MnO2 increased the Ni2+ adsorption capacity of PPCB. The molecular dynamic results indicated the carboxylate structures had the strongest adsorption capacity. Moreover, the Ni2+ removal efficiency of KMnO4 modified biomass decreased linearly with the increase of lignin content in biomass, while KMnO4 modified lignin showed a good adsorption performance, indicating that the cross-linked structures between lignin and other components in the biomass could inhibit the adsorption capacity of PPCB.
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Affiliation(s)
- Yuxing Tong
- China Tobacco Hubei Industrial Co., Ltd., Wuhan, People's Republic of China
- Hubei Xinye Reconstituted Tobacco Development Co., Ltd, Wuhan, People's Republic of China
- Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory, Wuhan, People's Republic of China
| | - Qunshan Yan
- China Tobacco Hubei Industrial Co., Ltd., Wuhan, People's Republic of China
- Hubei Xinye Reconstituted Tobacco Development Co., Ltd, Wuhan, People's Republic of China
- Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory, Wuhan, People's Republic of China
| | - Song Gao
- China Tobacco Hubei Industrial Co., Ltd., Wuhan, People's Republic of China
- Hubei Xinye Reconstituted Tobacco Development Co., Ltd, Wuhan, People's Republic of China
- Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory, Wuhan, People's Republic of China
| | - Bin Xiong
- China Tobacco Hubei Industrial Co., Ltd., Wuhan, People's Republic of China
- Hubei Xinye Reconstituted Tobacco Development Co., Ltd, Wuhan, People's Republic of China
- Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory, Wuhan, People's Republic of China
| | - Xiangbing Tang
- China Tobacco Hubei Industrial Co., Ltd., Wuhan, People's Republic of China
- Hubei Xinye Reconstituted Tobacco Development Co., Ltd, Wuhan, People's Republic of China
- Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory, Wuhan, People's Republic of China
| | - Zhichang Liu
- China Tobacco Hubei Industrial Co., Ltd., Wuhan, People's Republic of China
- Hubei Xinye Reconstituted Tobacco Development Co., Ltd, Wuhan, People's Republic of China
- Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory, Wuhan, People's Republic of China
| | - Pengfei Li
- China Tobacco Hubei Industrial Co., Ltd., Wuhan, People's Republic of China
- Hubei Xinye Reconstituted Tobacco Development Co., Ltd, Wuhan, People's Republic of China
- Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory, Wuhan, People's Republic of China
| | - Ming Huang
- China Tobacco Hubei Industrial Co., Ltd., Wuhan, People's Republic of China
- Hubei Xinye Reconstituted Tobacco Development Co., Ltd, Wuhan, People's Republic of China
- Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory, Wuhan, People's Republic of China
| | - Ziwei Wang
- China Tobacco Hubei Industrial Co., Ltd., Wuhan, People's Republic of China
- Hubei Xinye Reconstituted Tobacco Development Co., Ltd, Wuhan, People's Republic of China
- Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory, Wuhan, People's Republic of China
| | - Xi Le
- China Tobacco Hubei Industrial Co., Ltd., Wuhan, People's Republic of China
- Hubei Xinye Reconstituted Tobacco Development Co., Ltd, Wuhan, People's Republic of China
- Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory, Wuhan, People's Republic of China
| | - Wei Pei
- China Tobacco Hubei Industrial Co., Ltd., Wuhan, People's Republic of China
- Hubei Xinye Reconstituted Tobacco Development Co., Ltd, Wuhan, People's Republic of China
- Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory, Wuhan, People's Republic of China
| | - Zejun Dai
- China Tobacco Hubei Industrial Co., Ltd., Wuhan, People's Republic of China
- Hubei Xinye Reconstituted Tobacco Development Co., Ltd, Wuhan, People's Republic of China
- Applied Technology Research of Reconstituted Tobacco Hubei Province Key Laboratory, Wuhan, People's Republic of China
| | - Zhe Xiong
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yi Wang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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Gerstenbacher CM, Finzi AC, Rotjan RD, Novak AB. A review of microplastic impacts on seagrasses, epiphytes, and associated sediment communities. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 303:119108. [PMID: 35259472 DOI: 10.1016/j.envpol.2022.119108] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 02/11/2022] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
Microplastics have been discovered ubiquitously in marine environments. While their accumulation is noted in seagrass ecosystems, little attention has yet been given to microplastic impacts on seagrass plants and their associated epiphytic and sediment communities. We initiate this discussion by synthesizing the potential impacts microplastics have on relevant seagrass plant, epiphyte, and sediment processes and functions. We suggest that microplastics may harm epiphytes and seagrasses via impalement and light/gas blockage, and increase local concentrations of toxins, causing a disruption in metabolic processes. Further, microplastics may alter nutrient cycling by inhibiting dinitrogen fixation by diazotrophs, preventing microbial processes, and reducing root nutrient uptake. They may also harm seagrass sediment communities via sediment characteristic alteration and organism complications associated with ingestion. All impacts will be exacerbated by the high trapping efficiency of seagrasses. As microplastics become a permanent and increasing member of seagrass ecosystems it will be pertinent to direct future research towards understanding the extent microplastics impact seagrass ecosystems.
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Affiliation(s)
| | - Adrien C Finzi
- Department of Biology, Boston University, MA, 02215, USA
| | - Randi D Rotjan
- Department of Biology, Boston University, MA, 02215, USA
| | - Alyssa B Novak
- Department of Earth and Environment, Boston University, MA, 02215, USA.
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Fan Y, Lan H, Qi Z, Liu R, Hu C. Removal of nickel and copper ions in strongly acidic conditions by in-situ formed amyloid fibrils. CHEMOSPHERE 2022; 297:134241. [PMID: 35259361 DOI: 10.1016/j.chemosphere.2022.134241] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 02/25/2022] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
The research investigated a novel strategy that can synchronously remove Ni2+ and Cu2+ by synthesizing amyloid fibrils under harsh conditions. The adsorption capacity of Ni2+ and Cu2+ increased by 18.5% and 34.1% respectively in the in-situ scenario as compared to that Ni2+ and Cu2+ were introduced after amyloid fibrils preparation, meantime, it avoids the generation of acidic waste liquid in the process of preparing amyloid fibrils. The adsorption behaviors of Ni2+ and Cu2+ can be well described by the pseudo-second-order kinetic model and Langmuir isotherm. The functional groups of amide, hydroxyl, and carboxyl played determining roles in the adsorption process. Moreover, when the amyloid fibrils were prepared in the presence of Ni2+ and Cu2+, i.e., the in-situ adsorption scenario, metal ions tended to occupy the functional sites, inhibit protein aggregation, and affect long amyloid fibrils synthesis accordingly. Metal ion-binding site prediction server was used to predict the binding sites of metal ions towards the protein sequence within amyloid fibrils, and the metal ion was observed to preferentially bind to a particular residue such as glutamic acid, cysteine, and serine. The amyloid fibrils be potentially valuable for the removal of heavy metals in strongly acidic wastewater such as acidic mining drainage.
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Affiliation(s)
- Yuying Fan
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; School of Environment, Northeast Normal University, Changchun, 130117, China
| | - Huachun Lan
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China.
| | - Zenglu Qi
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ruiping Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chengzhi Hu
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
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Wallace AR, Su C, Sexton M, Sun W. Evaluation of the Immobilization of Coexisting Heavy Metal Ions of Pb 2+, Cd 2+ , and Zn 2+ from Water by Dairy Manure-Derived Biochar: Performance and Reusability. JOURNAL OF ENVIRONMENTAL ENGINEERING (NEW YORK, N.Y.) 2022; 148:1-13. [PMID: 37701062 PMCID: PMC10494894 DOI: 10.1061/(asce)ee.1943-7870.0002000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 01/20/2022] [Indexed: 09/14/2023]
Abstract
Heavy metals including Cd, Pb, and Zn are prevalent stormwater and groundwater contaminants derived from natural and human activities, and there is a lack of cost-effective treatment for their removal. Recently, biochar has been increasingly recognized as a promising low-cost sorbent that can be used to remediate heavy metal contaminated water. This study evaluates the immobilization/release performance of dairy manure-derived biochar (DM-BC) as a sustainable material for competitive removal of coexisting heavy metal ions from water and explains the underlying mechanism for regeneration/reusability of biochar. Results showed that the metal ions exhibited competitive removal in the order of Pb2+ ≫ Zn2+ > Cd2+. The pH played a decisive role in influencing metal ion speciation affecting the electrostatic attraction/repulsion and surface complexation. Higher pH led to greater removal for Pb2+ and Cd2+, whereas Zn2+ showed maximum removal at pH ≈ 7.5. Diffuse reflectance infrared spectroscopy, scanning electron microscopy, and X-ray diffraction confirmed the interactions and precipitation reactions of oxygen-containing functional groups (e.g., ─OH, C O 3 2 - , and Si─O) as key participants in metal immobilization. Langmuir, Freundlich, and Redlich-Peterson isotherm modeling data showed varied and unique results depending on the metal ion and concentration. The removal kinetics and model fitting showed that the three steps of intraparticle diffusion might be more representative for describing the immobilization processes of metal ions on the external surface and internal pores. In the flow-through columns, DM-BC effectively retained the mixed metal ions of Cd2+, Pb2+, and Zn2+ showing 100% removal for the duration of the column run over three cycles of regeneration and reuse.
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Affiliation(s)
- Anna Rose Wallace
- Environmental Engineer, US Environmental Protection Agency, Office of Research and Development, Center for Environmental Solutions and Emergency Response, Groundwater Characterization and Remediation Division, Ada, OK 74820; Environmental Engineer, Water Quality Program, Washington State Department of Ecology, Southwest Regional Office, P.O. Box 47775, Olympia, WA 98504
| | - Chunming Su
- Soil Scientist, US Environmental Protection Agency, Office of Research and Development, Center for Environmental Solutions and Emergency Response, Groundwater Characterization and Remediation Division, Ada, OK 74820
| | - Molly Sexton
- Physical Scientist, US Environmental Protection Agency, Office of Research and Development, Center for Environmental Solutions and Emergency Response, Groundwater Characterization and Remediation Division, Ada, OK 74820
| | - Wenjie Sun
- Associate Professor, Dept. of Atmospheric and Hydrologic Sciences, St. Cloud State Univ., St. Cloud, MN 56301; Assistant Professor, Dept. of Civil and Environmental Engineering, Southern Methodist Univ., Dallas, TX 75275
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Jayakumar V, Govindaradjane S, Rajamohan N, Rajasimman M. Biosorption potential of brown algae, Sargassum polycystum, for the removal of toxic metals, cadmium and zinc. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:41909-41922. [PMID: 34275071 DOI: 10.1007/s11356-021-15185-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 06/24/2021] [Indexed: 05/18/2023]
Abstract
In this research work, the biosorption potential of brown algae, Sargassum polycystum, was investigated for the removal of toxic metals, cadmium (Cd) and zinc (Zn), under controlled environmental conditions. The biosorbent prepared from the S. polycystum was characterized by Brunauer-Emmett-Teller (BET), scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR) techniques. The optimal conditions identified using Box-Behnken design (BBD) for Cd removal were pH: 4.65, biosorbent mass: 1.8 g/L and shaking speed: 76 rpm. For zinc, the optimum values were pH: 5.7, biosorbent mass: 1.2 g/L and shaking speed: 125 rpm, respectively. The equilibrium uptake of the metals, Cd and Zn, was evaluated by isotherm models. The Langmuir isotherm proved to be an excellent fit confirming single layer of sorption. The maximum Cd and Zn uptakes achieved were 105.26 mg/g and 116.2 mg/g respectively. The kinetics of Cd and Zn biosorption onto brown algae Sargassum polycystum, follows pseudo-second order. The thermodynamic parameters were determined, and the sorption process was found to be feasible. Desorption studies of Cd and Zn were performed, and the bio sorbent reproduced appreciable efficiency for five successive cycles of sorption-desorption process using HCl.
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Affiliation(s)
| | | | - Natarajan Rajamohan
- Chemical Engineering Section, Sohar University, Postal Code-311, Sohar, Oman
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