Products containing silver ion (Ag+) are widely used, leading to a large amount of Ag+-containing waste. The deep-sea manganese-oxidizing bacterium Marinobacter sp. MnI7-9 efficiently oxidizes Mn2+ to generate biogenic Mn oxide (BMO). The potential of BMO for recovering metal ions by adsorption has been investigated for some ions but not for Ag+. The main aim of this study was to develop effective methods for adsorbing and recovering Ag using BMO produced by Marinobacter sp. MnI7-9. In addition, the adsorption mechanism was determined using X-ray photoelectron spectroscopy analysis, specific surface area analysis, adsorption kinetics and thermodynamics. The results showed that BMO had a higher adsorption capacity for Ag+ compared to the chemical synthesized MnO2 (CMO). The isothermal absorption curves of BMO and CMO both fit the Langmuir model well and the maximum adsorption capacities at 28°C were 8.097 mmol/g and 0.787 mmol/g, for BMO and CMO, respectively. The change in enthalpy (ΔHθ) for BMO was 59.69 kJ/mol indicating that it acts primarily by chemical adsorption. The change in free energy (ΔGθ) for BMO was negative, which suggests that the adsorption occurs spontaneously. Ag+ adsorption by BMO was driven by entropy based on the positive ΔSθ values. The Ag+ adsorption kinetics by BMO fit the pseudo-second order model and the apparent activation energy of Ea is 21.72 kJ/mol. X-ray photoelectron spectroscopy analysis showed that 15.29% Ag+ adsorbed by BMO was transferred to Ag(0) and meant that redox reaction had happened during the adsorption. Desorption using nitric acid and Na2S completely recovered the Ag. The results show that BMO produced by strain MnI7-9 has potential for bioremediation and reutilization of Ag+-containing waste.
References
[1]
Wang W, Shao Z, Liu Y, Wang G (2009) Removal of multi-heavy metals using biogenic manganese oxides generated by a deep-sea sedimentary bacterium–Brachybacterium sp. strain Mn32. Microbiology 155: 1989–1996.
[2]
Liao S, Zhou J, Wang H, Chen X, Wang H, et al. (2013) Arsenite oxidation using biogenic manganese oxides produced by a deep-Sea manganese-oxidizing bacterium, Marinobacter sp. MnI7-9. Geomicrobiol J 30: 150–159.
[3]
Saratovsky I, Wightman PG, Pasten PA, Gaillard JF, Poeppelmeier KR (2006) Manganese oxides: parallels between abiotic and biotic structures. J Am Chem Soc 128: 11188–11198.
[4]
He JZ, Meng YT, Zheng YM, Zhang LM (2010) Cr(III) oxidation coupled with Mn(II) bacterial oxidation in the environment. J Soil Sediment 10: 767–773.
[5]
Nelson YM, Lion LW, Ghiorse WC, Shuler ML (1999) Production of biogenic Mn oxides by Leptothrix discophora SS-1 in a chemically defined growth medium and evaluation of their Pb adsorption characteristics. Appl Environ Microbiol 65: 175–180.
[6]
Tani Y, Ohashi M, Miyata N, Seyama H, Iwahori K, et al. (2004) Sorption of Co(II), Ni(II) and Zn(II) ions on biogenic manganese oxide produced by a Mn-oxidizing fungus, strain KR21-2. J Environ Sci Heal A 39: 2641–2660.
[7]
Villalobos M, Bargar J, Sposito G (2005) Trace metal retention on biogenic manganese oxide nanoparticles. Elements. 1: 223–226.
[8]
Duckworth OW, Bargar JR, Sposito G (2008) Sorption of ferric iron from ferrioxamine B to synthetic and biogenic layer type manganese oxides. Geochim Cosmochim Acta 72: 3371–3380.
[9]
Katsoyiannis IA, Zouboulis AI, Jekel M (2004) Kinetics of bacterial As(III) oxidation and subsequent As(V) removal by sorption onto biogenic manganese oxides during groundwater treatment. Ind Eng Chem Res 43: 486–493.
[10]
Ouvrard S, Simonnot MO, Sardin M (2002) Reactive behavior of natural manganese oxides toward the adsorption of phosphate and arsenate. Ind Eng Chem Res 41: 2785–2791.
[11]
Villalobos M, Toner B, Bargar J, Sposito G (2003) Characterization of the manganese oxide produced by Pseudomonas putida strain MnB1. Geochim Cosmochim Acta 67: 2649–2662.
[12]
Kim SS, Bargar JR, Nealson KH, Flood BE, Kirschvink JL, et al. (2011) Searching for biosignatures using electron paramagnetic resonance (EPR) analysis of manganese oxides. Astrobiology 11: 775–786.
[13]
Tani Y, Miyata N, Lwahori K, Soma M, Tokuda S, et al. (2003) Biogeochemistry of manganese oxide coatings on pebble surfaces in the Kikukawa River System, Shizuoka, Japan. Appl Geochem 18: 1541–1554.
[14]
Webb SM, Fuller CC, Tebo BM, Bargar JR (2006) Determination of uranyl incorporation into biogenic manganese oxides using X-ray absorption spectroscopy and scattering. Environ Sci Technol 40: 771–777.
[15]
Meng YT, Zheng YM, Zhang LM, He JZ (2009) Biogenic Mn oxides for effective adsorption of Cd from aquatic environment. Environ Pollut 157: 2577–2583.
[16]
？oruh S, ？enel G, Ergun ON (2010) A comparison of the properties of natural clinoptilolites and their ion-exchange capacities for silver removal. J Hazard Mater 180: 486–492.
[17]
Tang B, Yu G, Fang J, Shi T (2010) Recovery of high-purity silver directly from dilute effluents by an emulsion liquid membrane-crystallization process. J Hazard Mater 177: 377–383.
[18]
Yu B, Zhang Y, Shukla A, Shukla SS, Dorris KL (2000) The removal of heavy metal from aqueous solutions by sawdust adsorption-removal of copper. J Hazard Mater 80: 33–42.
[19]
Shakoori AR, Muneer B (2002) Copper-Resistant Bacteria from Industrial Effluents and their Role in Remediation of Heavy Metals in Wastewater. Folia Microbiol 47: 43–50.
[20]
Juang RS, Wub FC, Tsengc RL (1999) Adsorption removal of copper(II) using chitosan from simulated rinse solutions containing chelating agents. Water Res 33: 2403–2409.
[21]
Vakula NI, Kuramshina GM, Gorb LG, Hill F, Leszczynski J (2013) Adsorption and diffusion of a silver atom and its cation on α-SiO2 (001): Comparison of a pure surface with a surface containing an Al defect. Chem Phys Lett 567: 27–33.
[22]
Abd El-Ghaffar MA, Mohamedb MH, Elwakeelb KZ (2009) Adsorption of silver(I) on synthetic chelating polymer derived from 3-amino-1,2,4-triazole-5-thiol and glutaraldehyde. Chem Eng J 151: 30–38.
[23]
Lee JW, Park DS, Shim YB, Park SM (1992) Electrochemical characterization of poly (1, 8-diaminonaphthalene): a functionalized polymer. J Electrochem Soc 139: 3507–3514.
[24]
Ghadikolaei NJ, Bahramifar N, Ashrafi F (2013) Synthesis of NH2-MCM-41 nano porous adsorbent and using it for Zn and Ag metals removal from aqueous solutions by adsorption method and studying effect of some physicochemical parameters on it. Res J Appl Sci Eng Technol 6: 26–32.
[25]
Huo H, Su H, Tan T (2009) Adsorption of Ag+ by a surface molecular-imprinted biosorbent. Chem Eng J 150: 139–144.
[26]
Glasby GP (2000) Lessons Learned from Deep-Sea Mining. Science Magazine 28: 551–553.
[27]
Wang H, Li H, Shao Z, Liao S, Johnstone L, et al. (2012) Genome sequence of a deep-sea manganese-oxidizing bacterium. Marinobacter manganoxydans MnI7-9. J Bacteriol 194 (4): 899–900.
[28]
Yin H, Liu F, Feng X, Liu M, Tan W, et al. (2011) Co2+-exchange mechanism of birnessite and its application for the removal of Pb2+ and As (III). J Hazard Mater 196: 318–326.
[29]
Jiang G, Wang R, Jin H, Wang Y, Sun X, et al. (2011) Preparation of Cu2O/TiO2 composite porous carbon microspheres as efficient visible light-responsive photocatalysts. Powder Technology 212(1): 284–288.
[30]
Abollino O, Aceto M, Malandrino M, Sarzanini C, Mentasti E (2003) Adsorption of heavy metals on Na-montmorillonite, effect of pH and organic substances. Water Res 37: 1619–1627.
[31]
Yang J, Yang X, He Z, Li T, Shentu J, et al. (2006) Effects of pH, organic acids, and inorganic ions on lead desorption from soils. Environ Pollut 143: 9–15.
[32]
Ashgar M, Kanehiro Y (1980) Effect of sugar-cane trash and pineapple residue on soil pH, redox potential, extractable Al, Fe and Mn. Trop Agric 57: 245–258.
[33]
Ghassabzadeha H, Mohadespourb A, Torab-Mostaedic M, Zaherib P, Maraghehc MG, et al. (2010) Adsorption of Ag, Cu and Hg from aqueous solutions using expanded perlite. J Hazard Mater 177: 950–955.
[34]
Ho YS, McKay G (1999) Pseudo-second order model for sorption processes. Process Biochem 34: 451–465.
[35]
Azizian S (2004) Kinetic models of sorption: a theoretical analysis. J Colloid Interf Sci 276: 47–52.
[36]
Khare SK, Panday KK, Srivastava RM, Singh VN (1987) Removal of Victoria Blue from aqueous solution by fly ash. J Chem Technol Biot 38: 99–104.
[37]
Singh BK, Rawat NS (1994) Comparative sorption kinetic studies of phenolic compounds on fly ash and impregnated fly ash. J Chem Technol Biotechnol 61: 57–65.
[38]
Salim R, Al-Subu MM, Qashoa S (1994) Removal of lead from polluted water using decaying leaves. J Environ Sci Heal A 29: 2087–2114.
[39]
Dekany I, Zsednai A, LaszloK, Nagy LG (1987) Enthalpy of displacement of binary liquid mixtures on solid surfaces part II. Analysis of S-shaped excess isotherms. Colloids and Surfaces 23: 41–55.
[40]
Yi X S, Shi W X, Yu S L, Wang Y, Sun N, et al. (2011) Isotherm and kinetic behavior of adsorption of anion polyacrylamide (APAM) from aqueous solution using two kinds of PVDF UF membranes. J Hazard Mater 189: 495–501.
[41]
Dong Y, Li B, Lu F (2004) Physical chemistry. Beijing: Science Press. pp.222–224.
[42]
Gokmen V, Serpen A (2002) Equilibrium and kinetic studies on the adsorption of dark colored compounds from apple juice using adsorbent resin. J Food Eng 53: 221–227.
[43]
Elwakeel KZ, El-Sayed GO, Darweesh RS (2013) Fast and selective removal of Silver (I) from aqueous media by modified chitosan resins. Int J Miner Process 120: 26–34.
[44]
Kaushik K (1991) XPS core level spectra and Auger parameters for some silver compounds. J Electron Spectrosc Relat Phenom 56: 273–277.
[45]
Shalvoy RB, Fisher GB, Stiles PJ (1977) Bond ionicity and structural stability of some average-valence-five materials studied by x-ray photoemission. Phys Rev B 15: 1680–1697.
[46]
Sun D H, Li X L, Zhang GL (2013) Biosorption of Ag (I) from aqueous solution by Bacillus licheniformis strain R08. Appl Mechan Mater 295: 129–134.
[47]
Liu Y, Fu J, Hu H, Tang D, Ni Z, et al. (2001) Properties and characterization of Au3+-adsorption by mycelial waste of Streptomyces aureofaciences. Chinese Sci Bull 46: 1709–1712.
[48]
Liu Y, Fu J, Zhou Z, Yu X, Yao B (2000) A study of Pt4+- adsorption and its reduction by Bacillus megaterium D01. Chem Res Chin Uni 16: 1–4.
[49]
Lin Z, Zhou C, Wu J, Zhou J, Wang L (2005) A further insight into the mechanism of Ag+ biosorption by Lactobacillus sp. strain A09. Spectrochim Acta A 61: 1195–1200.
[50]
Naik RR, Stringer SJ, Agarwal G, Jones SE, Stone MO (2002) Biomimetic synthesis and patterning of silver nanoparticles. Nature 1: 169–172.
[51]
Chun Y, Sheng G, Chiou C T, Xing B (2004) Compositions and sorptive properties of crop residue-derived chars. Environ Sci Technol 38: 4649–4655.
