Performance and microbial analysis of a biotrickling filter inoculated by a specific bacteria consortium for removal of a simulated mixture of pharmaceutical volatile organic compounds

Hu, Jun; Zhang, Lili; Chen, Jianmeng; Luo, Yong; Sun, Baochang; Chu, Guang‐Wen

doi:10.1016/j.cej.2016.06.078

Cited by 61 publications

(15 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the biofilm-forming time considerably shortened, and the processing capacity of the biofilter enhanced. Hu et al used a combination of Zoogloea resiniphila HJ1 and Methylobacterium rhodesianum H13 as an inoculum to start biotrickling filters for toluene, o-xylene and dichloromethane removal, a fast start-up and more than 96.5% removal efficiency achieved on day 17 28 . Zhou et al used Ralstonia pickettii L2 and sludge as inoculum in the biotrickling filters and achieved fast start-up and more than 90% chlorobenzene removal on day 14 29 .…”

Section: Treatment Effect Of the High-efficiency Microbial Communitymentioning

confidence: 99%

Combination of highly efficient microflora to degrade paint spray exhaust gas

Lan

Yang

et al. 2020

Sci Rep

View full text Add to dashboard Cite

Spray paint exhaust gas contains recalcitrant volatile organic compounds (VOCs), such as benzene, toluene and xylene (BTX). Treating BTX with a biofilter often achieves unsatisfactory results because the biofilter lacks efficient microbial community. In this work, three strains for BTX degradation were isolated and identified as Pseudomonas putida, Bacillus cereus and Bacillus subtilis by using 16S rRNA sequencing technology. A consortium of highly efficient microbial community was then constructed on a stable biofilm to treat BTX in a biofilter. A relatively suitable ratio of P. putida, B. cereus and B. subtilis was obtained. An efficiency of over 90% was achieved in the biofilter with VOC concentration of 1000 mg/m 3 through inoculation with the microbial community after only 10 days of operation. Thus, fast start-up of the biofilter was realised. Analysis of intermediate products by gas chromatographymass spectrometry indicated that BTX was degraded into short-chain aldehydes or acids via ring opening reactions. Paint spray exhaust gas includes volatile organic compounds (VOCs), such as benzene, toluene and xylene (BTX), and even more complicated compounds, i.e. chlorinated benzenes and toluenes 1,2 , all of which can cause great harm to humans 3,4. The indiscriminate discharge of large amounts of paint spray exhaust gas also exerts a negative impact on the atmospheric environment 5,6. Therefore, efficient technologies should be developed to treat paint spray exhaust gas and address its effects. Although several technologies for paint spray exhaust gas treatment exist, some of these methods are difficult to apply on a large scale because of their shortcomings 7. Biofiltration and biotrickling filters have received wide attention because they are low-cost and occupy a small space. Moreover, the activity of microorganisms can remain comparatively stable 8-10. Leili et al. found that the biofiltration system shows good performance in terms of removing BTEX 11. In theory, VOCs can completely mineralise during biofiltration. However, it is restricted by the microorganism type and the operating parameters in practise. Thus, the effect remains unsatisfactory 12. The toxicants in waste gas could be degraded with a specific strain by acclimation, which can be applied to the biofilters to improve their efficiency. A removal efficiency of higher than 98% was achieved by Bacillus firmus when the concentration of ketone (acetone and methyl ethyl ketone) and benzene in paint spray exhaust gas was lower than 3000 mg/m 3 13. Mohammad et al. used Exophiala sp. as inoculum for biofilter, which had a good removal effect on BTEX 14. However, because the composition of the exhaust gas might be complex, a single strain may not always obtain satisfactory results, resulting in unstable removal rates 15,16. The microbial community has been studied to promote biofilter operation. Archaea and bacteria effectively remove printing press VOCs in an anaerobic bioscrubber 17. Xue et al. used a biotrickling filter to treat complex odorous gas...

show abstract

Section: Treatment Effect Of the High-efficiency Microbial Communitymentioning

confidence: 99%

Combination of highly efficient microflora to degrade paint spray exhaust gas

Lan

Yang

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…At an average total VOCs concentration of 300 mg m ‐3 and EBRT of 40 s, a removal efficiency between 70 and 80% was achieved and by decreasing the EBRT to 20 s, the RE decreased to 65% . Reported laboratory or field‐scale results showed the successful application of BTF for mitigating VOC mixtures …”

Section: Introductionmentioning

confidence: 99%

“…15 Reported laboratory or field-scale results showed the successful application of BTF for mitigating VOC mixtures. [16][17][18][19][20] The industrial waste gases such as petrochemical VOCs often contain a mixture of hydrophilic and hydrophobic pollutants with their degradation needing different microorganisms and metabolic steps. Low bioavailability and low mass transfer rates from gas phase to biofilm phase have limited the removal efficiency of hydrophobic VOCs in many industrial biofilters.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a sequential biotrickling–biofiltration unit for removal of VOCs from the headspace of crude oil storage tanks

Khoramfar

Jones

Boswell³

et al. 2018

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND Petrochemical refineries and production sites are considered to be the second greatest source of VOC emissions after vehicle exhausts. The feasibility and performance of a novel sequential biotrickling‐biofiltration unit for the treatment of a mixture of VOCs in the headspace of an oil and gas production tank battery was evaluated for three months at the Apache TAMU#2 well storage tank battery in Snook, Texas. RESULTS The results demonstrated that the main VOC constituents of the headspace of the storage tanks were alkanes along with smaller amounts of aromatics such as benzene, toluene and xylenes. Monitoring results for the biotreatment unit showed an average removal efficiency of 50–60% at an empty bed residence time of 120 s in each tank of the unit. After inoculation of the system with wastewater from a sedimentation basin of a local refinery, the removal efficiency of the system increased dramatically which demonstrated the importance of inoculation to achieve a rapid and successful start‐up in industrial biofilters. The most optimal performance was achieved after 77 days, obtaining the highest elimination capacity of 23 g m‐3 h‐1 at total VOCs loading rate of 39 g m‐3 h‐1. CONCLUSION The operation of the field‐scale sequential BTF‐BF unit for more than three months demonstrated the robustness of this technology and the degradation capabilities of a combination of the suspended and attached growth treatment. The project results demonstrated the potential for even more optimization for improved effectiveness of this novel biological treatment technology for removal of highly variable aromatic VOC concentrations. © 2017 Society of Chemical Industry

show abstract

“…Considerable research has been carried out to explore the performance of biological methods for the degradation of waste gases . Among these various biological technologies, the biotrickling filter (BTF), which has attracted considerable interest for around two decades, has proved to be highly efficient and cost‐effective, especially for removing biogenic malodors, such as hydrogen sulfide, ammonia, and other soluble compounds, as well as VOCs, while producing few secondary pollutants …”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13][14][15][16] Among these various biological technologies, the biotrickling filter (BTF), which has attracted considerable interest for around two decades, 17 has proved to be highly efficient and cost-effective, especially for removing biogenic malodors, such as hydrogen sulfide, ammonia, and other soluble compounds, as well as VOCs, while producing few secondary pollutants. 10,18,19 On the other hand, biological treatment generally presents a low biological oxidation rate due to the low water solubility and biodegradability of VOCs. [20][21][22] BTFs are also very large and noncompetitive.…”

Section: Introductionmentioning

confidence: 99%