Many bioprocesses depend on the effective formation of a biofilm on a solid support. In the present study, three different surface treatments (sandblasting, pure-O(2) plasma, and He-O(2) plasma treatments) were conducted on polypropylene (PP) Pall rings used as a support in biotrickling filters for air pollution control. The intent was to modify the ring surface and/or electrochemical properties in order to possibly improve cell adhesion, wetting properties, and possibly reduce the start-up time and increase the performance of the biotrickling filters. The surface treatments were found to generally increase the hydrophilicity and the zeta potential of the surfaces. However, the startup and performance of lab-scale biotrickling filters packed with treated Pall rings were not significantly different than the control with untreated rings. Cell and colloid deposition experiments conducted in flow cells showed that the treated surfaces and the hydrodynamic conditions were not favorable for cell deposition indicating that there could be significant opportunities for improving packings used in environmental bioprocess applications.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/bit.22354 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Pilot-scale biogas desulfurization through anoxic biofiltration.
J Hazard Mater
December 2024
Institute of Sustainable Processes, Paseo Prado de la Magdalena 3-5, Valladolid 47011, Spain; Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina s/n., Valladolid 47011, Spain. Electronic address:
In this study, the performance of a pilot-scale biotrickling filter (BTF) for anoxic hydrogen sulfide (HS) removal from real biogas was evaluated over 226 days. The BTF, inoculated with activated sludge from a nearby wastewater treatment plant, operated in an industrial environment with raw biogas from an anaerobic digester fed with municipal solid waste. The operating strategy was based on controlling nitrate consumption by sulfur-oxidizing nitrate-reducing (SO-NR) bacteria.
View Article and Find Full Text PDFMechanism of chlorobenzene removal in biotrickling filter enhanced by non-thermal plasma: Insights from biodiversity and functional gene perspectives.
Bioresour Technol
December 2024
School of Environment & Natural Resources, Zhejiang University of Science & Technology, HangZhou 310023, China; College of Environment, Zhejiang University of Technology, HangZhou 310014, China. Electronic address:
Biotrickling filter (BTF) technology is inefficient in the treatment of Cl-containing volatile organic compounds (VOCs) such as chlorobenzene (CB). This study adopted non-thermal plasma (NTP) as a pretreatment and conducted in-depth analyses, especially in microorganisms, to investigate strengthening mechanism of a NTP to a BTF in the process. The introduction of NTP enhance efficiency of CB removal from 65 % to 90 %, and CO generation from 60 % to 85 %.
View Article and Find Full Text PDFFuzzy set-based decision support system for hydrogen sulfide removal technology selection in natural gas processing: a sustainability and efficiency perspective.
Environ Monit Assess
November 2024
Research and Technology Group, Bidboland Gas Refining Company, Omidiyeh, Iran.
Removing hydrogen sulfide (HS) toxic and corrosive gas from the natural gas processing and utilization industry is a challenging problem for managers of these industries. This problem involves different economic, environmental, and health issues. Various technologies have been employed to remove the HS gas from these industries, and choosing appropriate HS removal technologies is a complex multi-criteria decision-making (MCDM) problem.
View Article and Find Full Text PDFSwelling problems in immobilized filler: an improvement method and comparative study of the effect of different fillers on biotrickling filters.
Bioprocess Biosyst Eng
November 2024
Key Laboratory of Beijing On Regional Air Pollution Control, Beijing University of Technology, Beijing, 100124, China.
Immobilized fillers have been increasingly utilized in biotrickling filters (BTFs) due to their positive impact on shock load resistance and recovery performance. However, due to the inherent characteristics of its immobilized carrier, the immobilized filler is prone to swelling during the long-term operation of the system, resulting in increased pressure drop. Polyurethane (PU) sponge was used as the cross-linked skeleton of immobilized filler and compared with direct emulsified cross-linked immobilized filler for treating ethylbenzene gas.
View Article and Find Full Text PDFAssessing the impact of packaging materials on anoxic biotrickling filtration of siloxanes in biogas: Effectiveness of activated carbon in removal performance.
J Environ Manage
November 2024
Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina s/n., Valladolid, 47011, Spain; Institute of Sustainable Processes, University of Valladolid, Dr. Mergelina s/n., Valladolid, 47011, Spain. Electronic address:
Article Synopsis
- Siloxanes (VMS) are harmful organosilicon compounds that affect the environment and human health, and their presence in biogas complicates its economic use.
- This study tests three types of packing materials for their effectiveness in removing VMS during anoxic biofiltration, finding that a combination of plastic rings and activated carbon (BTF-3) achieves the highest removal rates, especially for specific VMS types.
- Despite not seeing performance improvements with changes in liquid velocity or additional nanoparticles, the study reveals promising bacterial communities for VMS degradation and emphasizes activated carbon’s potential in enhancing treatment methods.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!