Application of a novel respirometric methodology to characterize mass transfer and activity of H2S-oxidizing biofilms in biotrickling filter beds

Abstract

Application of a novel respirometric methodology to characterize mass transfer and activity of H2S-oxidizing biofilms in biotrickling filter beds, Biochemical Engineering Journal http://dx.doi.org/10.1016/j.bej. 2015.02.030 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. • A novel respirometer design characterized the kinetics in H 2 S-oxidizing biofilms 3• H 2 S biofiltration properties were evaluated from a sample of biotrickling filter bed 4• Short-term respirometric assays (< 20 min) were performed 5• A mathematical model of the biotrickling filter bed respirometry was developed 6• The non-wetted biofilm fraction contributed 65% to the overall removal of H 2 S by the experimental evaluation of the oxygen uptake rate (OUR

Influence of trickling liquid velocity and flow pattern in the improvement of oxygen transport in aerobic biotrickling filters for biogas desulfurization

“…A better performance was achieved in the present work by the BTF in co‐current flow using Pall rings, a packing material with low specific surface area. Such result is consistent with previous work reporting that the specific surface area of the packing material is not a critical design parameter in biogas desulfurization . Such high H 2 S ECs have not been reported in neutrophilic desulfurization, which suggests an improvement related with the co‐current operation.…”

Nitrification in the presence of sulfide and organic matter in a sequencing moving bed biofilm reactor (SMBBR) with zeolite as biomass carrier

“…Jiang et al showed through simulations that the HS − was oxidized in the biofilm, generating profiles that could allow the co‐existence of sulfide‐oxidizing and heterotrophic biomass. Bonilla‐Blancas et al also indicated that under high oxygen concentration conditions, the sulfide can be completely degraded in the biofilm. Thus, the mass transfer resistance and chemical/biochemical reaction inside the biofilm also could explain the better performance of the system with zeolite.…”

Energy use and carbon footprints differ dramatically for diverse wastewater-derived carbonaceous substrates: An integrated exploration of biokinetics and life-cycle assessment

“… 47 ). Afterwards, the stoichiometric and kinetic parameters were estimated using the least square method, which minimizes the quadratic error between predicted and measured profiles of the substrates, storage products, and OUR profiles 48 . A version of AQUASIM 2.0 was used to determine the parameter surfaces 45 .…”

“…Energy demands to operate the sludge anaerobic digester included the requirements for heating. The amount of heat (kWh) required per 1000 kg of wet sludge was calculated from the difference between the assumed initial (20 °C) and desired (35 °C) temperatures, multiplied by the specific heat capacity of sludge with 6% solids (4.18 kJ/kg °C) 48 , and the heat loss from the AD system with available heat transfer coefficients 52 . The energy requirement for stirring in the AD system was excluded because it required much less than that for the heating of sludge or heat loss from the AD system 53 .…”