Comparison of different granular solids as biofilm carriers

Tarjányi-Szikora, Szilvia; Oláh, József; Makó, Magdolna; Palkó, György; Barkács, Katalin; Záray, Gyula

doi:10.1016/j.microc.2012.05.027

Cited by 34 publications

(13 citation statements)

References 26 publications

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“…In particular, the microbial communities in biofilms are diverse, which allow degrading a wide range of organic pollutants [6]. Meanwhile, the attachment and formation of biofilms largely depend on the surface properties of the biofilm carrier, including the physical/chemical properties of the carrier surface, the charge properties of the carrier surface, and the surface roughness of the carrier and so on [7][8][9][10][11][12]. In recent studies, the hydrophilicity and electronegativity of the carrier surface play an important role in the formation and treatment efficiency of biofilms [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Hydrophilic and Electrophilic Properties of Polyvinyl Chloride (PVC) Biofilm Carrier

Cai

Wang

et al. 2020

Polymers

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Polyvinyl chloride (PVC) biofilm carrier is used as a carrier for bacterial adsorption in wastewater treatment. The hydrophilicity and electrophilicity of its surface play an important role in the adsorption of bacteria. The PVC biofilm carrier was prepared by extruder, and its surface properties were investigated. In order to improve the hydrophilicity and electrophilic properties of the PVC biofilm carrier, polyvinyl alcohol (PVA) and cationic polyacrylamide (cPAM) were incorporated into polyvinyl chloride (PVC) by blending. Besides, the surface area of the PVC biofilm carrier was increased by azodicarbonamide modified with 10% by weight of zinc oxide (mAC). The surface contact angle of PVC applied by PVA and cPAM at 5 wt %, 15 wt % was 81.6°, which was 18.0% lower than pure PVC. It shows the significant improvement of the hydrophilicity of PVC. The zeta potential of pure PVC was −9.59 mV, while the modified PVC was 14.6 mV, which proves that the surface charge of PVC changed from negative to positive. Positive charge is more conducive to the adsorption of bacteria. It is obvious from the scanning electron microscope (SEM) images that holes appeared on the surface of the PVC biofilm carrier after adding mAC, which indicates the increase of PVC surface area.

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Section: Introductionmentioning

confidence: 99%

Enhanced Hydrophilic and Electrophilic Properties of Polyvinyl Chloride (PVC) Biofilm Carrier

Cai

Wang

et al. 2020

Polymers

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“…Bioreactor configurations can include the use of immobilized microorganisms (Yadav et al 2014;Pradeep and Malavalli 2016), and the support material for cell immobilization is one of the main features that affects bioreactor configuration and performance (Cabrera-Orozco et al 2017). In this context, an evaluation of different supports must be conducted to obtain optimal colonization and activity of the microorganisms (Tarjányi-Szikora et al 2013) and therefore an appropriate reactor design. Continuous stirred tank bioreactors (CSTR) have been widely adopted throughout the chemical and bioprocessing sectors owing to their simplicity (Abbott et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Performance of a continuous stirred tank bioreactor employing an immobilized actinobacteria mixed culture for the removal of organophosphorus pesticides

et al. 2020

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In this study, we evaluated polyurethane foam (PF), volcanic rock (VR), and a modified plastic cap (MPC) as supports for the immobilization of organophosphorus (OP) pesticide-degrading actinobacterial strains. The colonization and activity of four streptomycetes were favoured by PF, which was selected as the carrier to use in a continuous stirred tank bioreactor (CSTR) that can be operated at increasing inflows of a pesticide mixture that contains the insecticides chlorpyrifos (CP) and diazinon (DZ). Our results demonstrate that the CSTR can be operated at flow rates of 10 and 40 mL h −1 with greater than 85% removal of the pesticides in the short term. A significant decrease in the efficiency of CP removal was observed at the highest inflows into the reactor. The CP and DZ loading rates in the bioreactor ranged from 0.44 to 1.68 mg L −1 h −1 and from 0.50 to 2.17 mg L −1 h −1 , respectively. Although the treated wastewater exhibited moderate toxicity for Raphanus sativus, a bioreactor inoculated with a mixed culture formed by Streptomyces spp. strains AC5, AC9, GA11 and ISP13 may provide an effective biotechnological strategy for the reduction of OP pesticide residues produced during agronomic and manufacturing practices and therefore prevent environmental pesticidal pollution.

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“…7a). on account of an increase in influent organic loading (Tarjányi-Szikora et al, 2013;Zhang et al, 2016). There was the vigorous metabolism under HOLC, which in turn would enhance multiplication capacity of living organism in POAG and elevate removal performance of organic pollutants (Matyja et al, 2016;Zhang et al, 2016).…”

Section: Dehydrogenase Activity and Its Relationship With Influent Lomentioning

confidence: 99%

“…It is characteristics of abundant biodiversity (Adav et al, 2009;Bernat et al, 2017;Meerburg et al, 2016), a dense and strong microbial structure (Adav et al, 2008;Moy et al, 2002), elevated activity of enzymes (Li and Chróst, 2006;Matyja et al, 2016;Tarjányi-Szikora et al, 2013;Yao et al, 2010Yao et al, , 2012Zhang et al, 2016) and a great plenty of EPS secretion (Badireddy et al, 2010;Caudan et al, 2014;Liu et al, 2004;Zhao et al, 2016;Zhu et al, 2012), which makes it harbor good performance under HOLC.…”

Section: Introductionmentioning

confidence: 99%

Potential causes of high performance of pure-oxygen aerobic granules in SBR under high organic loading condition

2017

Global NEST Journal

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Comparison of different granular solids as biofilm carriers

Cited by 34 publications

References 26 publications

Enhanced Hydrophilic and Electrophilic Properties of Polyvinyl Chloride (PVC) Biofilm Carrier

Enhanced Hydrophilic and Electrophilic Properties of Polyvinyl Chloride (PVC) Biofilm Carrier

Performance of a continuous stirred tank bioreactor employing an immobilized actinobacteria mixed culture for the removal of organophosphorus pesticides

Potential causes of high performance of pure-oxygen aerobic granules in SBR under high organic loading condition

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