Explicit temperature-based model for anaerobic digestion: Application in domestic wastewater treatment in a UASB reactor

Donoso‐Bravo, Andrés; Bandara, Wasala M.K.R.T.W.; Satoh, Hisashi; Ruíz-Filippi, Gonzalo

doi:10.1016/j.biortech.2013.01.174

Cited by 21 publications

(6 citation statements)

References 24 publications

(7 reference statements)

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“…This last achieves its maximum value, 100 (mV), at 1000 min, and minimum value, −250 mV at 1300 min; however, it tends to stabilize with fermentation time. This performance is reflected as well in other works [53,54]. On the other hand, during the whole of this period, temperature moved between 23.6 and 24.6 °C.…”

Section: First Stagesupporting

confidence: 80%

Proposal of a Laboratory-Scale Anaerobic Biodigester for Introducing the Monitoring and Sensing Techniques, as a Potential Learning Tool in the Fields of Carbon Foot-Print Reduction and Climate Change Mitigation

Brito-Espino

León

Reboso

et al. 2021

Water

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This article presents a proposal of an anaerobic biodigester on a laboratory scale for introducing the monitoring and sensing techniques of the growth of microorganisms according to different parameters, where the redox potential, pH, pressure, and temperature have been measured in quasi-continuous mode. For this task, a microcontroller system was used (Atmega328—Arduino). Importantly, the design is based on flexible and open-source software, hardware, and firmware (Scilab, Arduino, Processing), facilitating its modification for other related studies. This design was developed to help engineering students to learn and to understand the operation of an anaerobic biodigester, which allows us to know various properties of the system at any time, as well as its evolution over time. In this way, property curves can be drawn and related to each other to obtain a better understanding of the biodigester operation. In this context, the relationship between the oxide-reduction reaction and microbial activity was studied so that the redox potential can be a way of measuring the growth of microorganisms in an anaerobic environment. With all this, through these parameters, it is possible to introduce to engineering students the operation of this technology used normally like a very powerful tool for the control of the carbon footprint, for example in wastewater sector, and consequently for the mitigation of the climate change.

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Section: First Stagesupporting

confidence: 80%

Proposal of a Laboratory-Scale Anaerobic Biodigester for Introducing the Monitoring and Sensing Techniques, as a Potential Learning Tool in the Fields of Carbon Foot-Print Reduction and Climate Change Mitigation

Brito-Espino

León

Reboso

et al. 2021

Water

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“…It was due to the prevailed local high temperature during the summer in Beijing. During ambient temperature operation, such deviations occur due to seasonal and diurnal temperature variations [35]. However, the summer temperature in Beijing is more or less similar to that of the tropical temperature in Sri Lanka.…”

Section: Cod Removalmentioning

confidence: 99%

Effects of Solids Retention Time on the Anaerobic Membrane Bioreactor with Yttria-Based Ceramic Membrane Treating Domestic Wastewater at Ambient Temperature

Nilusha

Zhang

et al. 2020

Membranes

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The effects of solid retention times (SRTs) (100 days, 50 days, 25 days) on the performance, microbial community, and membrane fouling of a lab-scale anaerobic yttria-based ceramic membrane bioreactor (AnCMBR) treating synthetic domestic wastewater at ambient temperature (31.2 ± 2.7 °C) were examined. The soluble chemical oxygen demand (SCOD) removal was higher (89.6%) at 25 days SRT compared with 50 days (39.61%) and 100 days (34.3%) SRT. At 100 days SRT, more Bacteroidetes, Firmicutes, and Proteobacteria were present in the microbial community. At 25 days SRT, more Chloroflexi, Synergistetes, and Pastescibacteria emerged, contributing to the stable performance. The SRT of 25 days has resulted in a more stable microbial community compared with 50 days and 100 days SRT. Both bacterial and archaeal community diversities were higher at 25 days SRT, and the specific production of soluble microbial by-products (SMPs) and extracellular polymeric substances (EPSs) were higher at 25 days SRT as well. Consequently, the membrane flux was lower at 25 days SRT with the increased particle size and the enhanced SMPs and EPSs production. Fourier transform infrared spectroscopy analysis (FTIR) and three-dimensional excitation and emission matrix (3D-EEM) analysis showed that protein and SMPs were the major membrane foulants at all SRT stages. In this study, SRT at 25 days was favorable for the stable operation of an AnCMBR treating domestic wastewater at ambient temperature.

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“…[13] The ADM1 is today considered state-of-the-art modelling of anaerobic treatment processes, [14] and although it was developed for anaerobic digestion of sludge, it has been applied for a large variety of feed materials including industrial wastewater, [15] co-digestion of different substrates, [16] energy crops, [17,18] and microalgae. [19] In addition, the ADM1 has been applied to simulate anaerobic processes in different reactor configurations, such as upflow anaerobic sludge blanket [20] or completely mixed reactor, [21] and under different operating conditions, such as mesophilic [18] or thermophilic [22] conditions. Mathematical modelling has also been largely applied to MBR processes.…”

Section: Introductionmentioning

confidence: 99%

Modelling wastewater treatment in a submerged anaerobic membrane bioreactor

Spagni

Ferraris

Casu

2015

Journal of Environmental Science and Health, Part A

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Mathematical modelling has been widely applied to membrane bioreactor (MBRs) processes. However, to date, very few studies have reported on the application of the anaerobic digestion model N.1 (ADM1) to anaerobic membrane processes. The aim of this study was to evaluate the applicability of the ADM1 to a submerged anaerobic MBR (SAMBR) treating simulated industrial wastewater composed of cheese whey and sucrose. This study demonstrated that the biological processes involved in SAMBRs can be modelled by using the ADM1. Moreover, the results showed that very few modifications of the parameters describing the ADM1 were required to reasonably fit the experimental data. In particular, adaptation to the specific conditions of the coefficients describing the wastewater characterisation and the reduction of the hydrolysis rate of particulate carbohydrate (khyd,ch) from 0.25 d(-1) (as suggested by the ADM1 for high-rate mesophilic reactors) to 0.13 d(-1) were required to fit the experimental data.

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Explicit temperature-based model for anaerobic digestion: Application in domestic wastewater treatment in a UASB reactor

Cited by 21 publications

References 24 publications

Proposal of a Laboratory-Scale Anaerobic Biodigester for Introducing the Monitoring and Sensing Techniques, as a Potential Learning Tool in the Fields of Carbon Foot-Print Reduction and Climate Change Mitigation

Proposal of a Laboratory-Scale Anaerobic Biodigester for Introducing the Monitoring and Sensing Techniques, as a Potential Learning Tool in the Fields of Carbon Foot-Print Reduction and Climate Change Mitigation

Effects of Solids Retention Time on the Anaerobic Membrane Bioreactor with Yttria-Based Ceramic Membrane Treating Domestic Wastewater at Ambient Temperature

Modelling wastewater treatment in a submerged anaerobic membrane bioreactor

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