Biological manganese oxidation byPseudomonas putidain trickling filters

Abstract

Biological oxidation has been researched as a viable alternative for treating waters with high manganese (Mn) concentrations, typically found in mine drainage or in some geological formations. In this study, laboratory-scale trickling filters were constructed to compare the Mn removal efficiency between filters inoculated with the Mn oxidizing bacteria, Pseudomonas putida, and filters without inoculation. Manganese oxidation and removal was found to be significantly greater in trickling filters with Pseudomonas putida after startup times of only 48 h. Mn oxidation in Pseudomonas putida inoculated trickling filters was up to 75% greater than non-inoculated filters. One-dimensional advective-dispersive models were formulated to describe the transport of Mn in trickling filter porous media. Based on the experimental transport parameters obtained, the model predicted that a filter depth of only 16 cm is needed to reduce influent concentration of 10 mg L(-1) to 0.05 mg L(-1).

Groundwater pollution containing ammonium, iron and manganese in a riverbank filtration system: Effects of dynamic geochemical conditions and microbial responses

“…The biotransformation phenomenon observed for Fe 2+ and Mn 2+ is consistent with the research results reported by Mckee et al (2016). It is generally considered that microbially mediated oxidation plays a major role in the iron and manganese biotransformation process (Katsoyiannis & Zouboulis, 2004).…”

“…Adsorption kinetics of ammonium, iron and manganese in aquifer medium (Fe 2+ : 30 mg L −1 , Mn 2+ : mg L −1 and NH 4 + : 10 mg L −1 , temperature = 10 C; the ratio of solid to liquid = 1:10; pH = 7) concentration (Brusseau, Hu, et al, 1999;Brusseau, Xie, et al, 1999;Han et al, 2013). is consistent with the research results reported by Mckee et al (2016). It is generally considered that microbially mediated oxidation plays a major role in the iron and manganese biotransformation process (Katsoyiannis & Zouboulis, 2004).…”

“…The biotransformation of N, Fe and Mn is tightly coupled in the sub‐surface environment (Chu et al, 2015; Luther, Sundby, Lewis, Brendel, & Silverberg, 1997; Vandenabeele, Beer, Germonpré, Sande, & Verstraete, 1995), and the principal parameters and major functional microbial species for their biotransformation have been investigated in some studies (Boano et al, 2015; Ellis, Bouchard, & Lantagne, 2000; Konopka, Plymale, Carvajal, Lin, & McKinley, 2013; Mermillod‐Blondin, Mauclaire, & Montuelle, 2005; Tekerlekopoulou & Vayenas, 2007). Many iron‐oxidizing bacteria (IOB) and manganese‐oxidizing bacteria (MnOB), including Pseudomonas , Leptothrix , Gallionella , Streptomyces , Toxothrix and Crenothrix , have been reported (Li et al, 2013; Mckee, Vance, & Karthikeyan, 2016; Tekerlekopoulou, Vasiliadou, & Vayenas, 2006; Yang, Li, Chu, Ren, & Zhang, 2014). Moreover, the appearance of ammonium‐oxidizing bacteria (AOB) ( Nitrosomonas and Nitrosococcus ) and nitrite‐oxidizing bacteria (NOB) ( Nitrospira ) demonstrated that nitrification occurred during the transformation of ammonium and nitrite, respectively (Rivett, Buss, Morgan, Smith, & Bemment, 2008; Sheibley, Duff, Jackman, & Triska, 2003).…”

Autochthonous tropical groundwater bacteria involved in manganese(ii) oxidation and removal

“…8,9,15,16,19 Most of the studies involve the oxidation capacity for Mn(II) of microorganisms, [24][25][26] and their biofilm formation capacity related to extracellular polymeric substances (EPS). 27,28 The biological oxidation of Mn(II) presents a high oxidation rate at neutral pH, 29 increasing the speed of this process up to five orders, compared to abiotic processes with only oxygen in the water. 16,[30][31][32] In addition, biogenic Mn oxides have a high metal adsorption capacity, due to their negative charge and greater specific surface area compared to synthetic ones.…”

“…9,45 For this reason, the study of MOB for the development of inoculums that contribute to reducing the start-up time of biofilters is of interest. 29,35,46,47 Examples of proactive inoculation methods, listed by Breda et al, 47 include the addition of a concentrated source of microorganisms and/or catalytic surfaces like backwash sludge, matured filter sand, mixed culture bacteria or specific bacterial species. A different approach consists of the use of the indigenous bacteria present in well water containing manganese.…”