Enhanced nitrate, manganese, and phenol removal by polyvinyl alcohol/sodium alginate with biochar gel beads immobilized bioreactor: Performance, mechanism, and bacterial diversity

Wang, Yue; Su, Junfeng; Ali, Amjad; Chang, Qiao; Bai, Yihan; Gao, Zhihong

doi:10.1016/j.biortech.2022.126818

Cited by 49 publications

(4 citation statements)

References 46 publications

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“…For microbial community analysis (2nd day, 7th day and 14th day), the 16S rRNA V3-V4 gene was selected as amplified fragment, and the primers were as follows: 314F (5′-CCTAYGGGRBGCASCAG-3′) and 806R (5′-GGACTACNNGG GTATCTAAT-3′) [ 29 , 30 ]. After amplification, 16S rRNA gene segments were sequenced on an Illumina HiSeq platform.…”

Section: Methodsmentioning

confidence: 99%

“…The control group was run under the same conditions but with no bacteria added. The effects of pH (3.0, 4.0, 5.0, 6.0, 7.0, 8.0 and 9.0), temperature (10,15,20,25,30,35 and 40 • C), inoculum size (0.5, 1.0, 2.0, 3.0, 4.0, 5.0%), rotary speed (80, 110, 140, 170, 200 rpm), initial concentration of Mn(II) (100, 200, 400, 500, 600, 700 and 800 mg/L) on the biomass of bacterial consortium and Mn-removal efficiency were investigated. Moreover, the effect of common coexisting metal ions (Fe 3+ , Cu 2+ , Zn 2+ , Cd 2+ ) in wastewater on Mn removal were investigated by adding FeCl 3 , CuCl 2 , ZnSO 4 and CdCl 2 to standard PYCM medium, respectively.…”

Section: Optimization Of the Culture Conditionsmentioning

confidence: 99%

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Enhancing the Mn-Removal Efficiency of Acid-Mine Bacterial Consortium: Performance Optimization and Mechanism Study

Hou,

Zhang,

et al. 2023

Microorganisms

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In this study, an acclimated manganese-oxidizing bacteria (MnOB) consortium, QBS-1, was enriched in an acid mine area; then, it was used to eliminate Mn(Ⅱ) in different types of wastewater. QBS-1 presented excellent Mn removal performance between pH 4.0 and 8.0, and the best Mn-removal efficiency was up to 99.86% after response surface methodology optimization. Unlike other MnOB consortia, the core bacteria of QBS-1 were Stenotrophomonas and Achromobacter, which might play vital roles in Mn removal. Besides that, adsorption, co-precipitation and electrostatic binding by biological manganese oxides could further promote Mn elimination. Finally, the performance of the Mn biofilter demonstrated that QBS-1 was an excellent inoculant, which indicates good potential for removing Mn contamination steadily and efficiently.

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Section: Methodsmentioning

confidence: 99%

Section: Optimization Of the Culture Conditionsmentioning

confidence: 99%

Enhancing the Mn-Removal Efficiency of Acid-Mine Bacterial Consortium: Performance Optimization and Mechanism Study

Hou,

Zhang,

et al. 2023

Microorganisms

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“…Synthetic procedures for adsorbent preparation can vary significantly from washing and slight modification (Gubitosa et al [22], Mohamed et al [24]) with low capital input per kg adsorbent to more sophisticated and intensive treatment (Hamidon et al [23]; Wang et al [21]). Although these adsorbents may not reach the adsorption capacities of powdered adsorbents (ca.…”

Section: Introductionmentioning

confidence: 99%

“…Solgi et al [12] reported the preparation of biocomposite pellet systems that contain chitosan (with and without surface modification) via crosslinking and/or calcium imbibing for sulfate removal. More recent developments have focused on cost reduction through agro-waste incorporation and their utility for removal of pollutants such as cations [20,21]. Further studies are required to establish the suitability of such agro-waste systems for the design of low-cost bioadsorbents for addressing sulfate removal, relative to higher cost systems such as chitosan-based pellets.…”

Section: Introductionmentioning

confidence: 99%

A Fixed-Bed Column with an Agro-Waste Biomass Composite for Controlled Separation of Sulfate from Aqueous Media

2023

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An agro-waste composite with a pelletized form was prepared and characterized via IR and 13C solids NMR spectroscopy. Thermal gravimetry analysis (TGA) was used to study the weight loss profiles, while SEM images provided insight on the biocomposite morphology, along with characterization of the sulfate adsorption properties under equilibrium and dynamic conditions. The sulfate monolayer adsorption capacity (qe = 23 mg/g) of the prepared agro-waste pellets was estimated from the adsorption isotherm results by employing the Langmuir model, and comparable fitting results were obtained by the Freundlich model. The dynamic adsorption properties were investigated via adsorption studies with a fixed bed column at pH 5.2. The effects of various parameters, including flow rate, bed height and initial concentrations of sulfate, were evaluated to estimate the optimal conditions for the separation of sulfate. The experimental data of the breakthrough curves were analyzed using the Thomas and Yoon–Nelson models, which provided satisfactory best-fits for the fixed bed kinetic adsorption results. The predicted adsorption capacities for all samples according to the Thomas model concur with the experimental values. The optimum conditions reported herein afford the highest dynamic adsorption capacity (30 mg/g) as follows: 1100 mg/L initial sulfate concentration, 30 cm bed height and 5 mL/min flow rate. The breakthrough time was measured to be 550 min. This study contributes to a strategy for controlled separation of sulfate using a sustainable biocomposite material that is suitable for fixed-bed column point-of-use water treatment systems.

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Study on the treatment of sulfite wastewater by Desulfovibrio

Zhao

Sun

Peng

et al. 2023

Bioprocess Biosyst Eng

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Enhanced nitrate, manganese, and phenol removal by polyvinyl alcohol/sodium alginate with biochar gel beads immobilized bioreactor: Performance, mechanism, and bacterial diversity

Cited by 49 publications

References 46 publications

Enhancing the Mn-Removal Efficiency of Acid-Mine Bacterial Consortium: Performance Optimization and Mechanism Study

Enhancing the Mn-Removal Efficiency of Acid-Mine Bacterial Consortium: Performance Optimization and Mechanism Study

A Fixed-Bed Column with an Agro-Waste Biomass Composite for Controlled Separation of Sulfate from Aqueous Media

Study on the treatment of sulfite wastewater by Desulfovibrio

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