铁铝复合氧化物对两种细菌的吸附作用研究
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摘要
铁铝氧化物是土壤的重要组分之一,其对土壤中有机无机组分的迁移具有重要影响.本文以枯草芽孢杆菌和荧光假单胞菌为研究对象,通过批吸附实验和DLVO理论,探究铁铝复合氧化物对细菌的粘附作用及其作用机制.结果表明,铁铝复合氧化物对细菌的粘附随着平衡浓度的增加而增加,吸附过程可用Langmuir方程拟合.铁铝1∶3复合氧化物对枯草芽孢杆菌和荧光假单胞菌的最大吸附量分别为3717.43和2792.29 mg·g~(-1),铁铝3∶1复合氧化物对枯草芽孢杆菌和荧光假单胞菌的最大吸附量分别为3455.58和2760.33 mg·g~(-1).随着pH值的增大,两种铁铝复合氧化物对两种细菌的吸附量均呈下降趋势.铁铝1∶3复合氧化物对两种细菌的吸附量均大于铁铝3∶1复合氧化物.静电吸引力是铁铝复合氧化物与细菌之间相互作用的主要因素之一.
Iron(Fe) and aluminum(Al) oxides are important components of soil, playing a crucial role in controlling the migration of organic and inorganic components in soil. In this study, batch adsorption experiment and DLVO theory were employed to examine the adhesion characteristics and mechanism of Bacillus subtilis and Pseudomonas fluorescens on Fe-Al composite oxides. The results show that bacterial adhesion on Fe-Al composite oxides increased with increasing equilibrium concentration. The bacterial adsorption process could be fitted by the Langmuir equation. The maximum adsorption capacity of B. subtilis and P. fluorescens on Fe∶Al 1∶3 composite oxide was 3717.43 and 2792.29 mg·g~(-1), while that on Fe∶Al 3∶1 composite oxide was 3455.58 and 2760.33 mg·g~(-1), respectively. Furthermore, the bacterial adsorption on the two Fe-Al composite oxides is weakened with increasing solution pH, and the adsorption capacity of both the bacteria was higher on Fe∶Al 1∶3 oxide than that on Fe-Al 3∶1 oxide. Electrostatic attraction was noted to be one of the main factors responsible for bacterial adhesion on Fe-Al composite oxides.
Iron(Fe) and aluminum(Al) oxides are important components of soil, playing a crucial role in controlling the migration of organic and inorganic components in soil. In this study, batch adsorption experiment and DLVO theory were employed to examine the adhesion characteristics and mechanism of Bacillus subtilis and Pseudomonas fluorescens on Fe-Al composite oxides. The results show that bacterial adhesion on Fe-Al composite oxides increased with increasing equilibrium concentration. The bacterial adsorption process could be fitted by the Langmuir equation. The maximum adsorption capacity of B. subtilis and P. fluorescens on Fe∶Al 1∶3 composite oxide was 3717.43 and 2792.29 mg·g~(-1), while that on Fe∶Al 3∶1 composite oxide was 3455.58 and 2760.33 mg·g~(-1), respectively. Furthermore, the bacterial adsorption on the two Fe-Al composite oxides is weakened with increasing solution pH, and the adsorption capacity of both the bacteria was higher on Fe∶Al 1∶3 oxide than that on Fe-Al 3∶1 oxide. Electrostatic attraction was noted to be one of the main factors responsible for bacterial adhesion on Fe-Al composite oxides.
引文
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Liu Z D, Wang H C, Li J Y, et al. 2015a. Adhesion of Escherichia coli, and Bacillus subtilis, to amorphous Fe and Al hydroxides and their effects on the surface charges of the hydroxides[J]. Journal of Soils and Sediments, 15(11):2293-2303
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Poortinga A T, Bos R, Norde W, et al. 2002. Electric double layer interactions in bacterial adhesion to surfaces [J]. Surface Science Reports, 47:1-32
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Vasiliadou I A, Chrysikopoulos C V. 2011. Cotransport of Pseudomonas putida and kaolinite particles through water-saturated columns packed with glass beads [J]. Water Resources Research, 47:2144-2150
Wu H, Chen W, Rong X, et al. 2014. Adhesion of Pseudomonas putida onto kaolinite at different growth phases [J]. Chemical Geology, 390:1-8
Yee N, Fein J B, Daughney C J. 2000. Experimental study of the pH, ionic strength, and reversibility behavior of bacteria-mineral adsorption [J]. Geochim Cosmochim Acta, 64:609-617
Zhang Z N, Yin N Y, Du H L, et al. 2016.The fate of arsenic adsorbed on iron oxides in the presence of arsenite-oxidizing bacteria [J]. Chemosphere, 151:108-115
Cai P, Huang Q Y, Walker S L. 2013. Deposition and survival of Escherichia coli O157:H7 on clay minerals in a parallel plate flow system [J]. Environmental Science and Technology,47(4):1896-1903
Darabdhara G, Boruah P K, Hussain N, et al. 2017. Magnetic nanoparticles towards efficient adsorption of gram positive and gram negative bacteria: an investigation of adsorption parameters and interaction mechanism [J]. Colloids and Surfaces A Physicochemical and Engineering Aspects, 516:161-170
Deo N, Natarajan K A, Somasundaran P. 2001. Mechanisms of adhesion of Paenibacillus polymyxa onto hematite, corundum and quartz [J]. International Journal of Mineral Processing, 62:27-39
Franzblau R E, Daughney C J, Moreau M, et al. 2014. Selenate adsorption to composites of Escherichia coli and iron oxide during the addition, oxidation, and hydrolysis of Fe(II) [J]. Chemical Geology, 383(383):180-193
Franzblau R E, Daughney C J, Moreau M, et al. 2015. Cu(II) removal by E.coli -iron oxide composites during the addition and oxidation of Fe(II) [J]. Chemical Geology, 409:136-148
ssbauer, FT-IR and FE SEM investigation of iron oxides precipitated from FeSO4 solutions[J]. Journal of Molecular Structure, 834-836:445-453
Hamadi F, Latrache H, Zahir H, et al. 2011. Evaluation of the relative cell surface charge by using microbial adhesion to hydrocarbon [J]. Microbiology, 80:488-491
Hendricks D W, Post F J, Khairnar D R. 1979. Adsorption of bacteria on soils: experiments, thermodynamic rationale and application [J]. Water Air Soil Pollution, 12:219-232
Hong Z N, Jiang J, Li J Y, et al. 2018. Preferential adhesion of surface groups of Bacillus subtilis on gibbsite at different ionic strengths and pHs revealed by ATR-FTIR spectroscopy [J]. Colloids and Surfaces B: Biointerfaces, 165:83-91
Hong Z N, Rong X M, Cai P, et al. 2012. Initial adhesion of Bacillus subtilis on soil minerals as related to their surface properties[J]. European Journal of Soil Science, 63:457-466
Huang Q Y, Chen W L, Xu L H. 2005. Adsorption of copper and cadmium by Cu and Cd-resistant bacteria and their composites with soil colloids and kaolinite [J]. Geomicrobiology Journal, 22: 227-236
Jiang D, Huang Q, Cai P, et al. 2007. Adsorption of Pseudomonas putida on clay minerals and iron oxide [J]. Colloids and Surfaces B: Biointerfaces, 54:217-221
蒋代华, 黄巧云, 蔡鹏,等. 2007.粘粒矿物对细菌吸附的测定方法[J]. 土壤学报, 44(4):656-662
Liu Z D, Wang H C, Li J Y, et al. 2015a. Adhesion of Escherichia coli, and Bacillus subtilis, to amorphous Fe and Al hydroxides and their effects on the surface charges of the hydroxides[J]. Journal of Soils and Sediments, 15(11):2293-2303
Liu Z D, Hong Z N, Li J Y, et al. 2015b. Interactions between Escherchia coli and the colloids of three variable charge soils and their effects on soil surface charge properties [J]. Geomicrobiology Journal, 32(6):511-520
Loosdrecht M C M V, Lyklema J, Norde W, et al. 1989. Bacterial adhesion: A physicochemical approach [J]. Microbial Ecology, 17:1-15
Lower S K, Hochella M F J R, Beveridge T J. 2001. Bacterial recognition of mineral surfaces: nanoscale interactions between Shewanella and alpha-FeOOH [J]. Science, 292:1360-1363
Poortinga A T, Bos R, Norde W, et al. 2002. Electric double layer interactions in bacterial adhesion to surfaces [J]. Surface Science Reports, 47:1-32
Qu C C, Ma M K, Chen W L, et al. 2018. Modeling of Cd adsorption to goethite-bacteria composites [J]. Chemosphere, 193:943-950
任丽英, 赵敏, 董玉良,等. 2014. 两种铁氧化物对土壤有效态汞的吸附作用研究 [J]. 环境科学学报, 34(3):749-753
Ren L Y, Hong Z N, Liu Z D,et al. 2018. ATR-FTIR investigation of mechanisms of Bacillus subtilis adhesion onto variable- and constant-charge soil colloids [J]. Colloids and Surfaces B: Biointerfaces, 162:288-295
荣兴民, 黄巧云, 陈雯莉, 等. 2011. 细菌在两种土壤矿物表面吸附的热力学分析 [J]. 土壤学报, 48(2):331-337
宋长青, 吴金水, 陆雅海, 等. 2013. 中国土壤微生物学研究10年回顾 [J]. 地球科学进展, 10(10):1087-1105
Vasiliadou I A, Chrysikopoulos C V. 2011. Cotransport of Pseudomonas putida and kaolinite particles through water-saturated columns packed with glass beads [J]. Water Resources Research, 47:2144-2150
Wu H, Chen W, Rong X, et al. 2014. Adhesion of Pseudomonas putida onto kaolinite at different growth phases [J]. Chemical Geology, 390:1-8
Yee N, Fein J B, Daughney C J. 2000. Experimental study of the pH, ionic strength, and reversibility behavior of bacteria-mineral adsorption [J]. Geochim Cosmochim Acta, 64:609-617
Zhang Z N, Yin N Y, Du H L, et al. 2016.The fate of arsenic adsorbed on iron oxides in the presence of arsenite-oxidizing bacteria [J]. Chemosphere, 151:108-115