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Lin Y, Hu X, Zi F, Chen S, Chen Y, Yang P, Zhang Y, Li X. Accelerating gold extraction from refractory gold tailings via NH4HF2 pre-treatment. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Deepa K, Sridhar A, Panda T. Biogenic Gold Nanoparticles: Current Applications and Future Prospects. J CLUST SCI. [DOI: 10.1007/s10876-022-02304-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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3
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Legorreta-castañeda AJ, Lucho-constantino CA, Coronel-olivares C, Beltrán-hernández RI, Vázquez-rodríguez GA. Biosorption of Precious Metals Present at Dilute Concentrations on Fungal Pellets. Processes (Basel) 2022; 10:645. [DOI: 10.3390/pr10040645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022] Open
Abstract
Biosorption on fungal pellets constitutes a promising way of removing precious metals, which are often present at dilute concentrations in wastewater. Herein, we studied the Ag and Au biosorption by Aspergillus tabacinus and Cladosporium cladosporioides pellets. For A. tabacinus pellets the optimum pH values for the biosorption of Ag and Au were 5 and 4, respectively, while for C. cladosporioides granules, the best-suited values were 3 and 4, respectively. Biosorption kinetics of both metals were also studied at low adsorbate concentrations (1 mg/L) and the pH values mentioned above, and the contact times that allow maximum recovery of the two metals were defined. At the pH values estimated as optimum, A. tabacinus pellets adsorbed greater amounts of Ag than C. cladosporioides pellets, while for Au the opposite occurred. We found that the pseudo-second-order model adequately represents Ag and Au biosorption kinetics under the conditions tested. Due to the growing demand and limited availability of these metals, their recovery from aqueous residual solutions is economically attractive and desirable in the expanding circular economy scheme.
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Muralikrishnan R, Jodhi C. Biodecolorization of reactive blue 19 using biochar derived from groundnut shell: batch adsorption isotherms, kinetics and regeneration studies. Appl Nanosci 2022. [DOI: 10.1007/s13204-021-02212-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Gao X, Guo C, Hao J, Zhao Z, Long H, Li M. Adsorption of heavy metal ions by sodium alginate based adsorbent-a review and new perspectives. Int J Biol Macromol 2020; 164:4423-4434. [DOI: 10.1016/j.ijbiomac.2020.09.046] [Citation(s) in RCA: 124] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/27/2020] [Accepted: 09/07/2020] [Indexed: 12/18/2022]
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Qin H, Guo X, Tian Q, Zhang L. Pyrite enhanced chlorination roasting and its efficacy in gold and silver recovery from gold tailing. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117168] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Muralikrishnan R, Jodhi C. Biodecolorization of Reactive Dyes Using Biochar Derived from Coconut Shell: Batch, Isotherm, Kinetic and Desorption Studies. ChemistrySelect 2020. [DOI: 10.1002/slct.202001454] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- R. Muralikrishnan
- Research ScholarDepartment of Civil Engineering, Annamalai University Tamil Nadu India - 608002
| | - C. Jodhi
- Associate ProfessorDepartment of Civil Engineering, Annamalai University Tamil Nadu 608002 India
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Saravanakumar K, Senthilkumar R, Prasad DMR, Prasad BSN, Manickam S, Gajendiran V. Batch and Column Arsenate Sorption Using
Turbinaria ornata
Seaweed Derived Biochar: Experimental Studies and Mathematical Modeling. ChemistrySelect 2020. [DOI: 10.1002/slct.202000548] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | | | - Donipathi Mogili Reddy Prasad
- Petroleum and Chemical Engineering Programme areaFaculty of Engineering Universiti Teknologi Brunei, Gadong Brunei Darussalam
| | | | | | - Vasu Gajendiran
- Department of EngineeringSalalah College of Technology Salalah, Sultanate of Oman
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Rana S, Mishra P, Wahid ZA, Thakur S, Pant D, Singh L. Microbe-mediated sustainable bio-recovery of gold from low-grade precious solid waste: A microbiological overview. J Environ Sci (China) 2020; 89:47-64. [PMID: 31892401 DOI: 10.1016/j.jes.2019.09.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 09/24/2019] [Accepted: 09/25/2019] [Indexed: 06/10/2023]
Abstract
In an era of electronics, recovering the precious metal such as gold from ever increasing piles of electronic-wastes and metal-ion infested soil has become one of the prime concerns for researchers worldwide. Biological mining is an attractive, economical and non-hazardous to recover gold from the low-grade auriferous ore containing waste or soil. This review represents the recent major biological gold retrieval methods used to bio-mine gold. The biomining methods discussed in this review include, bioleaching, bio-oxidation, bio-precipitation, bio-flotation, bio-flocculation, bio-sorption, bio-reduction, bio-electrometallurgical technologies and bioaccumulation. The mechanism of gold biorecovery by microbes is explained in detail to explore its intracellular mechanistic, which help it withstand high concentrations of gold without causing any fatal consequences. Major challenges and future opportunities associated with each method and how they will dictate the fate of gold bio-metallurgy from metal wastes or metal infested soil bioremediation in the coming future are also discussed. With the help of concurrent advancements in high-throughput technologies, the gold bio-exploratory methods will speed up our ways to ensure maximum gold retrieval out of such low-grade ores containing sources, while keeping the gold mining clean and more sustainable.
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Affiliation(s)
- Supriyanka Rana
- Faculty of Civil Engineering Technology, Universiti Malaysia Pahang, 26300, Gambang, Kuantan, Pahang, Malaysia
| | - Puranjan Mishra
- Faculty of Civil Engineering Technology, Universiti Malaysia Pahang, 26300, Gambang, Kuantan, Pahang, Malaysia
| | - Zularisam Ab Wahid
- Faculty of Civil Engineering Technology, Universiti Malaysia Pahang, 26300, Gambang, Kuantan, Pahang, Malaysia; Earth Resources and Sustainability Center (EARS), Universiti Malaysia Pahang, 26300, Gambang, Kuantan, Pahang, Malaysia.
| | - Sveta Thakur
- Faculty of Civil Engineering Technology, Universiti Malaysia Pahang, 26300, Gambang, Kuantan, Pahang, Malaysia
| | - Deepak Pant
- Separation and Conversion Technology, Flemish Institute for Technological Research (VITO), Boeretang 200, Mol, 2400, Belgium
| | - Lakhveer Singh
- Faculty of Civil Engineering Technology, Universiti Malaysia Pahang, 26300, Gambang, Kuantan, Pahang, Malaysia; Earth Resources and Sustainability Center (EARS), Universiti Malaysia Pahang, 26300, Gambang, Kuantan, Pahang, Malaysia.
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Affiliation(s)
- Rui-Lian Lin
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China
| | - Yong-Ping Dong
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China
| | - Min Tang
- School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, China
| | - Zhichang Liu
- School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Jing-Xin Liu
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China
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Abstract
Due to the progressive fall of the ore grades and the increasingly refractory composition of minerals, concentrating plants have increased which has led to an increase in the generation of tailings. Tailings, especially those obtained in the past, have remaining copper and other valuable species in quantities that can potentially be recovered, such as gold, silver, vanadium, and rare earth elements which transforms this abundant waste into a potential source of precious or strategic metals for secondary mining. One of the techniques of solid–liquid separation that processes solutions with low concentrations of metals corresponds to adsorption, and more recently biosorption, which is based on the use of biological matrices that do not constitute an environmental liability after application. Biosorption occurs as a consequence of the wide variety of active functional groups present in different types of biomass. Bacterial, fungal, plant, and algal biomasses have been described as biosorbents, mainly for the treatment of diluted and simple solutions. This work aims to recover copper from leached tailings using biomass of the red algae Gracilaria chilensis as a biosorbent. The tailing samples were taken from an abandoned deposit, in the north of Chile, and after an acid leaching copper was biosorbed, kinetics of adsorption and the equilibrium isotherms were studied, applying the Freundlich and Langmuir models. Operational parameters such as adsorbent dose, pH, and initial metal concentration were studied.
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Senthilkumar R, Reddy Prasad DM, Govindarajan L, Saravanakumar K, Naveen Prasad BS. Synthesis of green marine algal-based biochar for remediation of arsenic(V) from contaminated waters in batch and column mode of operation. Int J Phytoremediation 2019; 22:279-286. [PMID: 31475570 DOI: 10.1080/15226514.2019.1658710] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The sorption behavior of biochar derived from green seaweed (Ulva reticulata) toward arsenic(V) ions was explored in both batch and continuous modes. The pH edge experiments indicated optimum arsenic(V) sorption observed at pH 4, with maximum sorptional capacity of 7.67 mg/g through isotherm experiments. The kinetic experimental trials indicated that arsenic(V) sorption onto biochar was a fast electrostatic attraction process, with maximum removal occurred within 30 min. The sorption isotherms were modeled using the Toth, Redlich-Peterson, Langmuir and Freundlich isotherm models while the adsorption kinetics was modeled using the pseudo-first- and pseudo-second-order kinetic equations. The three-parameter models (Redlich-Peterson and Toth) better described the isotherm data, whereas pseudo-first-order model represented kinetic data well with low error and high correlation coefficient values. Among the different alkaline and acidic elutants investigated, the solution of 0.01 M NaOH effectively desorbed arsenic(V) from spent biochar. The feasibility of the biochar in continuous remediation of arsenic(V) from contaminated waters was explored in an up-flow fixed column. The biochar exhibited arsenic(V) removal efficiency and sorptional uptake of 59.5% and 8.12 mg/g, respectively. The biochar-loaded column was effectively desorbed using NaOH (0.01 M), with desorption efficiency of 99.5%.
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Affiliation(s)
- R Senthilkumar
- Department of Engineering, College of Applied Sciences, Sohar, Sultanate of Oman
| | - D M Reddy Prasad
- Petroleum and Chemical Engineering Programme Area, Faculty of Engineering, Universiti Teknologi Brunei, Gadong, Brunei Darussalam
| | - L Govindarajan
- Department of Engineering, College of Applied Sciences, Sohar, Sultanate of Oman
| | - K Saravanakumar
- Department of Engineering, College of Applied Sciences, Sohar, Sultanate of Oman
| | - B S Naveen Prasad
- Chemical Section, Salalah College of Technology, Salalah, Sultanate of Oman
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15
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Affiliation(s)
- K. Vijayaraghavan
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, India
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16
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Mihăilescu M, Negrea A, Ciopec M, Davidescu CM, Negrea P, Duţeanu N, Rusu G. Gold (III) adsorption from dilute waste solutions onto Amberlite XAD7 resin modified with L-glutamic acid. Sci Rep 2019; 9:8757. [PMID: 31217435 DOI: 10.1038/s41598-019-45249-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 06/04/2019] [Indexed: 11/17/2022] Open
Abstract
The main purpose of this paper was to obtain a material with efficient adsorbing properties and selectivity, to recover the gold (III) from residual diluted solutions resulted from the electroplating process. In this regard, a material was obtained by physico-chemical functionalization of a chemically inert support with functional groups of nitrogen and carboxyl. As a source of functional groups glutamic acid was used, and Amberlite XAD7 type acrylic resin was used as solid support. In order to establish the mechanism of the adsorption process, kinetic, thermodynamic and equilibrium studies were performed. The maximum adsorption capacity of the material has been established, and a gold (III) recovery process has been proposed using thermal decomposition of the exhausted adsorbed material. Main objective of this study was to evaluate an environmental friendly adsorbent material to recover gold from secondary industrial sources.
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Abstract
The unique property of biochar, synthesized from a green seaweed (Ulva lactuca), to remediate complex Remazol dye bearing wastewater was investigated. Preliminary trials were targeted to explore the remediation capacity of biochar towards each of Remazol dyes (Remazol brilliant blue R (RBBR), Remazol brilliant orange 3R (RBO3R), Remazol brilliant violet 5R (RBV5R), and Remazol Black B (RBB)) in single-solute system. The results show that equilibrium pH played a vital part with maximum sorption observed at pH 2.0. The isotherm experiments confirmed that biochar exhibited high uptakes of 0.301, 0.292, 0.265, and 0.224 mmol/g for RBO3R, RBBR, RBV5R, and RBB, respectively. Due to the presence of multiple dyes as well as high concentration of auxiliary chemicals, the performance of biochar to remediate Remazol effluent was inhibited markedly compared to single solute systems. Nevertheless, the dye removal efficiency was above 77.5% and the decolorization rate was high with more than 95% of total dye decolorization completed within 240 min. Our results provide novel insights into the potential of biochar to remove Remazol dyes from complex dye wastewaters.
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Affiliation(s)
- Ravindiran Gokulan
- Department of Civil Engineering, GMR Institute of Technology , Rajam , Andhra Pradesh , India
| | - Ganapathy Ganesh Prabhu
- Department of Civil Engineering, GMR Institute of Technology , Rajam , Andhra Pradesh , India
| | - Josephraj Jegan
- Department of Civil Engineering, University college of Engineering Ramanathapuram, Anna University , Ramanathapuram , India
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Senthilkumar R, Reddy Prasad D, Govindarajan L, Saravanakumar K, Naveen Prasad B. Improved sorption of reactive black 5 by date seed-derived biochar: isotherm, kinetic, and thermodynamic studies. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1547318] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- R. Senthilkumar
- Department of Engineering, College of Applied Sciences, Sohar, Sultanate of Oman
| | - D.M. Reddy Prasad
- Petroleum and Chemical Engineering Programme area, Faculty of Engineering, Universiti Teknologi Brunei, Gadong, Brunei Darussalam
| | - L. Govindarajan
- Department of Engineering, College of Applied Sciences, Sohar, Sultanate of Oman
| | - K. Saravanakumar
- Department of Engineering, College of Applied Sciences, Sohar, Sultanate of Oman
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Gao X, Zhang Y, Zhao Y. Zinc oxide templating of porous alginate beads for the recovery of gold ions. Carbohydr Polym 2018; 200:297-304. [PMID: 30177170 DOI: 10.1016/j.carbpol.2018.07.097] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 07/20/2018] [Accepted: 07/20/2018] [Indexed: 12/01/2022]
Abstract
In this study, a novel porous alginate adsorbent was prepared by zinc oxide templating to selectively adsorb Au (III) ions from multi-metallic solutions under acidic condition. Due to the porous structure of the prepared sorbent, high uptake capacity and fast adsorption kinetics of Au (ІІІ) were achieved, which renders the prepared adsorbent great potential for practical applications in fixed-bed columns for large-scale applications. The adsorption of Au (III) by the prepared adsorbent led to the reduction of Au (III) to metallic gold. Adsorption and reduction of Au (III) in the process are mediated by the ionic and covalent interaction between Au (III) ions and the protonated functional groups on the modified alginate.
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Affiliation(s)
- Xiangpeng Gao
- Department of Process Engineering, Memorial University of Newfoundland, St. John's, A1B 3X5, Canada
| | - Yan Zhang
- Department of Process Engineering, Memorial University of Newfoundland, St. John's, A1B 3X5, Canada.
| | - Yuming Zhao
- Department of Chemistry, Memorial University of Newfoundland, St. John's, A1C 5S7, Canada
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Sheel A, Pant D. Recovery of gold from electronic waste using chemical assisted microbial biosorption (hybrid) technique. Bioresour Technol 2018; 247:1189-1192. [PMID: 28941665 DOI: 10.1016/j.biortech.2017.08.212] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 08/30/2017] [Accepted: 08/31/2017] [Indexed: 06/07/2023]
Abstract
The aim of present study was to develop a modified method of gold recovery from e-waste. Selective biosorption of gold from contact point of printed circuit board was achieved by using the combination of ammonium thiosulfate (AT) and Lactobacillus acidophilus (LA).Improvement in biosorption was due to the π-π interaction and resultant change in amide absorption bond between AT and LA, as evidenced by infrared spectroscopy. Selection was justified by some basic postulates of ionic radii and confirmed by inductively coupled plasma atomic emission spectroscopy. This methodology provides a unique leaching-sorption method for gold recovery and 85% of gold was recovered (from AT leachant) by the proposed combination.
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Affiliation(s)
- Anvita Sheel
- Department of Environmental Sciences, Central University of Himachal Pradesh, Dharamshala, Himachal Pradesh 176215, India
| | - Deepak Pant
- Department of Environmental Sciences, Central University of Himachal Pradesh, Dharamshala, Himachal Pradesh 176215, India.
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Fu L, Zhang L, Wang S, Zhang B, Peng J. Selective recovery of Au(III) from aqueous solutions by nanosilica grafted with cationic polymer: Kinetics and isotherm. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.07.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Dwivedi AD, Permana R, Singh JP, Yoon H, Chae KH, Chang YS, Hwang DS. Tunichrome-Inspired Gold-Enrichment Dispersion Matrix and Its Application in Water Treatment: A Proof-of-Concept Investigation. ACS Appl Mater Interfaces 2017; 9:19815-19824. [PMID: 28535031 DOI: 10.1021/acsami.7b03064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Tunicate, a filter-feeder in seawater, is able to accumulate high amount of metals using intracellular polymer matrices. The woven pyrogallol structures of tunichrome, a small peptide contained in tunicate's blood cells, is believed to be responsible for selective metal sequestration in tunicates from seawater. However, the intriguing tunichrome matrix is difficult both to harvest from the tunicate and to synthesize massively due to the extreme oxidation sensitivity of the pyrogallol moiety which limits the study scope. Here, we succeeded to mimic tunichrome by conjugating two cheap and naturally occurring components: pyrogallol-5-carboxylic acid (gallic acid) and chitin nanofiber. A tunicate-mimetic infiltration matrix of surface-tailored chitin nanofibers with pyrogallol moieties (CGa) demonstrated the versatility of this strategy in generation of ingenious filtration material, especially for unprecedented fine and clean gold recovery inside of the tunicate-mimetic infiltration matrix (>99%, 533 mg gold per gram weight), which exceeds that of the presently most popular materials. Complexation between pyrogallol on the nanofiber and gold was similar to that of a tunichrome's metal sequestration. Extended X-ray absorption fine structure (EXAFS) spectroscopy and data-fitting elucidated the decreased coordination numbers for Au-Au nearest neighbors, demonstrating that gold coordinated to pyrogallol units, followed by an intramolecular association of Au0. A catalytic reduction of 4-nitrophenol mediated by the tunicate-mimetic matrix with harvested gold revealed excellent recyclability up to 30 cycles (∼95% reduction), which together with methylene blue reduction and antimicrobial performances indicates the versatile characteristics of sustainable processes by the tunichrome mimetics. This strategy opens the door for fast-developing new biomimetic alternatives for precious metal recovery, which is not restricted to gold and can offer a tool for multifaceted soft/hard nanomaterials.
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Affiliation(s)
| | | | - Jitendra Pal Singh
- Advanced Analysis Centre, Korea Institute of Science and Technology , Seoul 02792, Republic of Korea
| | | | - Keun Hwa Chae
- Advanced Analysis Centre, Korea Institute of Science and Technology , Seoul 02792, Republic of Korea
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Shi C, Zhu N, Kang N, Wu P, Zhang X, Zhang Y. Sorption-reduction coupled gold recovery process boosted by Pycnoporus sanguineus biomass: Uptake pattern and performance enhancement via biomass surface modification. Biotechnol Prog 2017; 33:1314-1322. [PMID: 28547917 DOI: 10.1002/btpr.2499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 04/19/2017] [Indexed: 11/08/2022]
Abstract
Biorecovery is emerging as a promising process to retrieve gold from secondary resources. The present study aimed to explore the uptake pattern of Pycnoporus sanguineus biomass for gold, identify the effective functional groups in gold recovery process, and thus further intensify the process via microbial surface modification. Results showed that P. sanguineus biomass could effectively recover gold with the formation of highly crystal AuNPs without any exogeneous electron donor. Under the conditions of various initial gold concentrations (1.0, 2.0, and 3.0 mM), biomass dosage of 2.0 g/L, solution pH value of 4.0, and incubation temperature of 30°C, the uptake equilibrium established after 4, 8, and 12 h, respectively. The uptake process could be well described by pseudo-second order kinetics model (R2 = 0.9988) and Langmuir isotherm model (R2 = 0.9958). The maximum uptake capacity of P. sanguineus reached as high as 358.69 mg/g. Further analysis indicated that amino, carboxyl and hydroxyl groups positively contributed to the uptake process. Among them, amino group significantly favored the uptake of gold during recovery process. When P. sanguineus biomass was modified by introduction of amino group, the gold uptake process was successfully intensified by shortening the uptake period and enhancing the uptake capacity. © 2017 American Institute of Chemical Engineers Biotechnol. Prog., 33:1314-1322, 2017.
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Affiliation(s)
- Chaohong Shi
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China
| | - Nengwu Zhu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China.,The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of Ministry of Education, Guangzhou, 510006, People's Republic of China.,Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou, 510006, People's Republic of China.,Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, Guangzhou, 510006, People's Republic of China
| | - Naixin Kang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China
| | - Pingxiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China.,The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of Ministry of Education, Guangzhou, 510006, People's Republic of China.,Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou, 510006, People's Republic of China
| | - Xiaoping Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China.,The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of Ministry of Education, Guangzhou, 510006, People's Republic of China.,Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou, 510006, People's Republic of China
| | - Yanhong Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China
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Zhu N, Cao Y, Shi C, Wu P, Ma H. Biorecovery of gold as nanoparticles and its catalytic activities for p-nitrophenol degradation. Environ Sci Pollut Res Int 2016; 23:7627-7638. [PMID: 26739993 DOI: 10.1007/s11356-015-6033-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 12/28/2015] [Indexed: 06/05/2023]
Abstract
Recovery of gold from aqueous solution using simple and economical methodologies is highly desirable. In this work, recovery of gold as gold nanoparticles (AuNPs) by Shewanella haliotis with sodium lactate as electron donor was explored. The results showed that the process was affected by the concentration of biomass, sodium lactate, and initial gold ions as well as pH value. Specifically, the presence of sodium lactate determines the formation of nanoparticles, biomass, and AuCl4 (-) concentration mainly affected the size and dispersity of the products, reaction pH greatly affected the recovery efficiency, and morphology of the products in the recovery process. Under appropriate conditions (5.25 g/L biomass, 40 mM sodium lactate, 0.5 mM AuCl4 (-), and pH of 5), the recovery efficiency was almost 99 %, and the recovered AuNPs were mainly spherical with size range of 10-30 nm (~85 %). Meanwhile, Fourier transforms infrared spectroscopy and X-ray photoelectron spectroscopy demonstrated that carboxyl and amine groups might play an important role in the process. In addition, the catalytic activity of the AuNPs recovered under various conditions was testified by analyzing the reduction rate of p-nitrophenol by borohydride. The biorecovered AuNPs exhibited interesting size and shape-dependent catalytic activity, of which the spherical particle with smaller size showed the highest catalytic reduction activity with rate constant of 0.665 min(-1).
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Affiliation(s)
- Nengwu Zhu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China.
- The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of Ministry of Education, Guangzhou, 510006, People's Republic of China.
- Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou, 510006, People's Republic of China.
| | - Yanlan Cao
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China
| | - Chaohong Shi
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China
| | - Pingxiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China
- The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of Ministry of Education, Guangzhou, 510006, People's Republic of China
- Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou, 510006, People's Republic of China
| | - Haiqin Ma
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China
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Robalds A, Naja GM, Klavins M. Highlighting inconsistencies regarding metal biosorption. J Hazard Mater 2016; 304:553-556. [PMID: 26607871 DOI: 10.1016/j.jhazmat.2015.10.042] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Revised: 10/12/2015] [Accepted: 10/20/2015] [Indexed: 06/05/2023]
Abstract
Thousands of articles have been devoted to examine different types of biosorbents and their use in cleaning polluted waters. An important objective of some studies has been the identification of the biosorption mechanisms. This type of investigation is not always performed, as it can only be done if scientists are aware of all mechanisms that, at least theoretically, control the removal of the target substances. Mistakes are often made, even in highly cited review articles, where biosorption mechanisms are named and/or grouped. The aim of this article is to highlight errors and inaccuracies as well as to discuss different classification systems of the biosorption mechanisms. This article serves as a guide, as well as a platform for discussion among researchers involved in the investigation of biosorbents, in an effort to avoid reproducing errors in subsequent articles.
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Affiliation(s)
- Artis Robalds
- Department of Environmental Science, University of Latvia, Raina Blvd. 19, Riga LV-1586, Latvia.
| | - Ghinwa Melodie Naja
- Science Department, Everglades Foundation, 18001 Old Cutler Road, Palmetto Bay, FL 33157, United States.
| | - Maris Klavins
- Department of Environmental Science, University of Latvia, Raina Blvd. 19, Riga LV-1586, Latvia
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Pang LJ, Li R, Gao QH, Hu JT, Xing Z, Zhang MX, Wang MH, Wu GZ. Functionalized and reusable polyethylene fibres for Au(iii) extraction from aqueous solution with high adsorption capacity and selectivity. RSC Adv 2016. [DOI: 10.1039/c6ra14202h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Functional UHMWPE fibres, used for efficient and selective Au(iii) adsorption from aqueous solutions, were successfully synthesized by a radiation grafting method.
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Affiliation(s)
- Li-juan Pang
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
- University of Chinese Academy of Sciences
| | - Rong Li
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Qian-hong Gao
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Jiang-tao Hu
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Zhe Xing
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Ming-xing Zhang
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Mou-hua Wang
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
| | - Guo-Zhong Wu
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- China
- School of Physical Science and Technology
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28
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Li Y, Tang X, Song W, Zhu L, Liu X, Yan X, Jin C, Ren Q. Biosynthesis of silver nanoparticles using Euglena gracilis, Euglena intermedia and their extract. IET Nanobiotechnol 2015; 9:19-26. [PMID: 25650322 DOI: 10.1049/iet-nbt.2013.0062] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Extracellular and intracellular biosynthesis of silver nanoparticles (AgNPs) by Euglena gracilis (EG) strain and Euglena intermedia (EI) strain are reported in this study. The obtained nanoparticles showed an absorption peak approximates 420 nm in the UV-visible spectrum, corresponding to the plasmon resonance of AgNPs. According to the result of inductively coupled plasma-atomic emission spectrometer, the intakes of silver ions by EI and EG are roughly equal. The transmission electron microscope (TEM) analysis of the successful in vivo and in vitro synthesised AgNPs indicated the sizes, ranging from 6 to 24 nm and 15 to 60 nm in diameter, respectively, and a spherical-shaped polydispersal of the particles. The successful formation of AgNPs has been confirmed by energy dispersive X-ray analysis connected to the TEM. The Fourier transform infrared spectroscopy measurements reveal the presence of bioactive functional groups such as amines are found to be the capping and stabilising agents of nanoparticles. To our knowledge, this is the first report where two kinds of Euglena microalga were used as the potential source for in vivo and in vitro biosynthesis of AgNPs.
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Affiliation(s)
- Yong Li
- Center of Analysis and Measurement, Fudan University, Shanghai 200433, People's Republic of China
| | - Xiaoling Tang
- Center of Analysis and Measurement, Fudan University, Shanghai 200433, People's Republic of China
| | - Wenshuang Song
- Center of Analysis and Measurement, Fudan University, Shanghai 200433, People's Republic of China
| | - Lina Zhu
- Center of Analysis and Measurement, Fudan University, Shanghai 200433, People's Republic of China
| | - Xingang Liu
- Center of Analysis and Measurement, Fudan University, Shanghai 200433, People's Republic of China
| | - Xiaomin Yan
- Center of Analysis and Measurement, Fudan University, Shanghai 200433, People's Republic of China
| | - Chengzhi Jin
- Center of Analysis and Measurement, Fudan University, Shanghai 200433, People's Republic of China
| | - Qingguang Ren
- Center of Analysis and Measurement, Fudan University, Shanghai 200433, People's Republic of China.
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Sathishkumar M, Pavagadhi S, Mahadevan A, Balasubramanian R. Biosynthesis of gold nanoparticles and related cytotoxicity evaluation using A549 cells. Ecotoxicol Environ Saf 2015; 114:232-240. [PMID: 24835429 DOI: 10.1016/j.ecoenv.2014.03.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 03/16/2014] [Accepted: 03/18/2014] [Indexed: 06/03/2023]
Abstract
Biosynthesis of gold nanoparticles (AuNPs) has become an attractive area of research as it is environmentally benign. The toxicity of AuNPs synthesized by chemical routes has been widely studied. However, little is known about the toxicity associated with the biological synthesis of AuNPs. The present study was carried out to synthesize AuNPs using star anise (Illicium verum; a commercially available spice in abundance)and evaluate its toxicity using human epithelial lung cells (A549) in comparison with AuNPs synthesized by the traditional chemical methods (using sodium citrate and sodium borohydride). Apart from cell viability, markers of oxidative stress (reduced glutathione) and cell death (caspases) were also evaluated to understand the mechanisms of toxicity. Cell viability was observed to be 65.7 percent and 72.3 percent in cells exposed to chemically synthesized AuNPs at the highest dose (200nM) as compared to 80.2 percent for biologically synthesized AuNPs. Protective coating/capping of AuNPs by various polyphenolic compounds present in star anise extract appears to be a major contributor to lower toxicity observed in biologically synthesized AuNPs.
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Affiliation(s)
- M Sathishkumar
- Singapore-Delft Water Alliance, National University of Singapore, Singapore
| | - S Pavagadhi
- Singapore-Delft Water Alliance, National University of Singapore, Singapore; Department of Civil and Environmental Engineering, National University of Singapore
| | - A Mahadevan
- Singapore-Delft Water Alliance, National University of Singapore, Singapore; Department of Civil and Environmental Engineering, National University of Singapore
| | - R Balasubramanian
- Singapore-Delft Water Alliance, National University of Singapore, Singapore; Department of Civil and Environmental Engineering, National University of Singapore.
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Schröfel A, Kratošová G, Šafařík I, Šafaříková M, Raška I, Shor LM. Applications of biosynthesized metallic nanoparticles - a review. Acta Biomater 2014; 10:4023-42. [PMID: 24925045 DOI: 10.1016/j.actbio.2014.05.022] [Citation(s) in RCA: 205] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 04/13/2014] [Accepted: 05/21/2014] [Indexed: 02/08/2023]
Abstract
We present a comprehensive review of the applications of biosynthesized metallic nanoparticles (NPs). The biosynthesis of metallic NPs is the subject of a number of recent reviews, which focus on the various "bottom-up" biofabrication methods and characterization of the final products. Numerous applications exploit the advantages of biosynthesis over chemical or physical NP syntheses, including lower capital and operating expenses, reduced environmental impacts, and superior biocompatibility and stability of the NP products. The key applications reviewed here include biomedical applications, especially antimicrobial applications, but also imaging applications, catalytic applications such as reduction of environmental contaminants, and electrochemical applications including sensing. The discussion of each application is augmented with a critical review of the potential for continued development.
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Gopalakrishnan R, Raghu K. Biosynthesis and Characterization of Gold and Silver Nanoparticles Using Milk Thistle ( Silybum marianum ) Seed Extract. ACTA ACUST UNITED AC 2014; 2014:1-8. [DOI: 10.1155/2014/905404] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Biogenic synthesis of gold and silver nanoparticles from aqueous solutions using milk thistle (Silybum marianum) seed extract as reducing and stabilizing agent has been reported. Formation and stabilization of nanoparticles were monitored using surface plasmon resonance (SPR) bands of UV-Vis spectroscopy. Morphology of gold and silver nanoparticles was investigated using X-ray diffraction, high-resolution transmission electron microscopy with selected area electron diffraction analysis, and dynamic light scattering. Fourier transform-infrared spectroscopy was employed to identify the possible biomolecules responsible for the reduction and stabilization of nanoparticles.
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32
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Correa-Llantén DN, Muñoz-Ibacache SA, Castro ME, Muñoz PA, Blamey JM. Gold nanoparticles synthesized by Geobacillus sp. strain ID17 a thermophilic bacterium isolated from Deception Island, Antarctica. Microb Cell Fact 2013; 12:75. [PMID: 23919572 PMCID: PMC3751291 DOI: 10.1186/1475-2859-12-75] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 07/31/2013] [Indexed: 11/21/2022] Open
Abstract
Background The use of microorganisms in the synthesis of nanoparticles emerges as an eco-friendly and exciting approach, for production of nanoparticles due to its low energy requirement, environmental compatibility, reduced costs of manufacture, scalability, and nanoparticle stabilization compared with the chemical synthesis. Results The production of gold nanoparticles by the thermophilic bacterium Geobacillus sp. strain ID17 is reported in this study. Cells exposed to Au3+ turned from colourless into an intense purple colour. This change of colour indicates the accumulation of intracellular gold nanoparticles. Elemental analysis of particles composition was verified using TEM and EDX analysis. The intracellular localization and particles size were verified by TEM showing two different types of particles of predominant quasi-hexagonal shape with size ranging from 5–50 nm. The mayority of them were between 10‒20 nm in size. FT-IR was utilized to characterize the chemical surface of gold nanoparticles. This assay supports the idea of a protein type of compound on the surface of biosynthesized gold nanoparticles. Reductase activity involved in the synthesis of gold nanoparticles has been previously reported to be present in others microorganisms. This reduction using NADH as substrate was tested in ID17. Crude extracts of the microorganism could catalyze the NADH-dependent Au3+ reduction. Conclusions Our results strongly suggest that the biosynthesis of gold nanoparticles by ID17 is mediated by enzymes and NADH as a cofactor for this biological transformation.
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