Mechanisms of COD removal in the adsorption stage of the A/B process

Jiménez, José; Murthy, Sudhir; Kinnear, Dave; Wett, Bernhard; Bott, Charles

doi:10.2175/193864713813673721

Cited by 7 publications

(3 citation statements)

References 1 publication

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“…The logarithmic growth phase for P1 and B2 was approximately 600 min. Similar to the study of Miller et al, the COD removal of approximately 60% could be successfully achieved in the A stage …”

Section: Resultssupporting

confidence: 71%

Mechanism of Degrading Petroleum Hydrocarbons by Compound Marine Petroleum-Degrading Bacteria: Surface Adsorption, Cell Uptake, and Biodegradation

et al. 2019

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The amount and biodegradability of oil-degrading bacteria in seawater should be augmented to improve the biodegradation of marine petroleum hydrocarbons. This study investigated the degradation of petroleum-degrading bacteria (P1) with biosurfactant-producing bacteria (B2) and its mechanism. Two groups of experiments that consist of P1 with and without B2 were designed. The degradation performance and surface characteristics of the bacteria and the degradation path of diesel were studied. The degradation rate in the group of P1 with B2 was 82.65%, which was higher than that without B2, after 12 days. The analysis of surface characteristics showed that a high hydrophobicity enabled diesel to be accessible to cells. Meanwhile, the addition of B2 increased the contact area between bacteria and diesel, which was favorable to bioaugmentation degradation. The diesel degradation paths included surface adsorption, cell uptake, and biodegradation. The first step of diesel degradation was a rapid surface adsorption followed by cell uptake. The velocities of the removal rate of diesel by biodegradation and cell uptake in the group of P1 with B2 were higher than those without B2.

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Section: Resultssupporting

confidence: 71%

Mechanism of Degrading Petroleum Hydrocarbons by Compound Marine Petroleum-Degrading Bacteria: Surface Adsorption, Cell Uptake, and Biodegradation

et al. 2019

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“…A partial list of state variables used in the modified model framework is shown in Table 1. Review of the literature (Jimenez, 2002;Laspidou et al, 2002b;Miller et al, 2013) has led to a modification of the model framework. Figure 1 illustrates the flow of electrons in the modified ASM1 model framework .…”

Section: Model Descriptionmentioning

confidence: 99%

Population balance models: a useful complementary modelling framework for future WWTP modelling

Torfs

Ducoste

Vanrolleghem

et al. 2014

Water Science and Technology

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Population balance models (PBMs) represent a powerful modelling framework for the description of the dynamics of properties that are characterised by distributions. This distribution of properties under transient conditions has been demonstrated in many chemical engineering applications. Modelling efforts of several current and future unit processes in wastewater treatment plants could potentially benefit from this framework, especially when distributed dynamics have a significant impact on the overall unit process performance. In these cases, current models that rely on average properties cannot sufficiently capture the true behaviour and even lead to completely wrong conclusions. Examples of distributed properties are bubble size, floc size, crystal size or granule size. In these cases, PBMs can be used to develop new knowledge that can be embedded in our current models to improve their predictive capability. Hence, PBMs should be regarded as a complementary modelling framework to biokinetic models. This paper provides an overview of current applications, future potential and limitations of PBMs in the field of wastewater treatment modelling, thereby looking over the fence to other scientific disciplines.

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“…The produced biosolids are subsequently separated in the clarifier with a portion recycled back to the main reactor and the remaining channeled to anaerobic digester for biogas production. In general, about 55-65% of the total COD could be removed (Miller et al, 2013. However, it is difficult to balance the wasted sludge and recycled sludge flows, i.e.…”

Section: Hrasmentioning

confidence: 99%

Novel A-B processes for energy-efficient municipal wastewater reclamation with minimized sludge production

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First of all, I would like to express my deepest gratitude to my main supervisor, Prof. Liu Yu. This research could not be fulfilled without his insightful guidance and prudent supervision. His profound knowledge and personal experiences not only encourage me to work harder on my research topic but also inspire and encourage me to be an open-minded researcher, and critical thinker. He always enlightens me to find logic ways to solve critical challenges in my research areas. Meanwhile, his rich life experience he shared with me always inspires me to find the truth of life. It is my great honor to be one of his students. I would also thank my co-supervisor, Prof. William Chen, and my mentor, Prof. Ng Wun Jern for their advice and supports. They are very friendly and approachable whenever I had any questions or difficulties during my PhD study.

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Mechanisms of COD removal in the adsorption stage of the A/B process

Cited by 7 publications

References 1 publication

Mechanism of Degrading Petroleum Hydrocarbons by Compound Marine Petroleum-Degrading Bacteria: Surface Adsorption, Cell Uptake, and Biodegradation

Mechanism of Degrading Petroleum Hydrocarbons by Compound Marine Petroleum-Degrading Bacteria: Surface Adsorption, Cell Uptake, and Biodegradation

Population balance models: a useful complementary modelling framework for future WWTP modelling

Novel A-B processes for energy-efficient municipal wastewater reclamation with minimized sludge production

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