A simple kinetic modeling approach for aerobic stabilization of real waste activated sludge

Bahar, Shahriyar; Çığgın, Aslı Seyhan

doi:10.1016/j.cej.2016.05.149

Cited by 17 publications

(4 citation statements)

References 20 publications

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“…Alternative models are also possible. For example, while we assumed that endogenous metabolism converts microorganisms only to carbon dioxide and water, Bahar and Ciggin (2016), found that 25 % of the biomass converted by endogenous metabolism is converted into inert suspended solids. Inclusion of inert formation from endogenous metabolism would have a small effect in the calculation of suspended solids by our models but wouldn't significantly change the results of our study.…”

Section: General Discussion and Comparison Of Sbr And Cas Processesmentioning

confidence: 99%

Model-based comparison of sequencing batch reactors and continuous-flow activated sludge processes for biological wastewater treatment

Sánchez

Vuono

Dionisi

2021

Computers & Chemical Engineering

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This study compares, based on mathematical modelling, continuous-flow activated sludge processes (CAS) and sequencing batch reactors (SBR). The steady-state or periodic steady-state of CAS and SBR processes is compared for a feed composed of readily or slowly biodegradable substrates, for carbon and for carbon and nitrogen removal. The simulations are carried out for different values of the SRT (solids residence time), HRT (hydraulic residence time), number of cycles and internal recycle. If the SRT is large enough, the SBR can remove the influent biodegradable COD completely, while the CAS has a residual effluent COD concentration. For carbon and nitrogen removal, the SBR can remove the ammonia completely while the CAS has a residual effluent ammonia concentration. For typical values of the operating parameters, the CAS gives higher total nitrogen removal than the SBR, which becomes comparable to the CAS only for a large number of cycles per day.

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Section: General Discussion and Comparison Of Sbr And Cas Processesmentioning

confidence: 99%

Model-based comparison of sequencing batch reactors and continuous-flow activated sludge processes for biological wastewater treatment

Sánchez

Vuono

Dionisi

2021

Computers & Chemical Engineering

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“…The process under consideration exhibits temperature sensitivity and is susceptible to the presence of heavy metals, among other factors. However, it is noteworthy that despite its significant energy requirements, this process does not generate byproducts such as methane [303][304][305]. The pace of anaerobic digestion is constrained by the hydrolysis of organic materials in sludge, which subsequently leads to an increase in biogas output.…”

Section: Methods Of Sludge Treatmentmentioning

confidence: 99%

Recent Advances in the Remediation of Textile-Dye-Containing Wastewater: Prioritizing Human Health and Sustainable Wastewater Treatment

Periyasamy

2024

Sustainability

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Water makes up most of the Earth, although just 0.3% is usable for people and animals. The huge oceans, icecaps, and other non-potable water resources make up the remaining 99.7%. Water quality has declined in recent decades due to pollution from population growth, industry, unplanned urbanization, and poor water management. The textile industry has significant global importance, although it also stands as a major contributor to wastewater generation, leading to water depletion and ecotoxicity. This issue arises from the extensive utilization of harmful chemicals, notably dyes. The main aim of this review article is to combine and assess the impacts of textile wastewater that contains dyes and chemicals, and to examine their potential consequences on human health, aquatic health, and the environment. Moreover, the dedicated section presents an in-depth review of various environmentally sustainable approaches for the management and treatment of wastewater in the textile industry. These approaches encompass bio adsorbents, biological methods, membrane technology, ion exchange, advanced oxidation processes, as well as physicochemical and biochemical processes. Furthermore, this study also evaluates the contemporary progressions in this particular domain, taking into account the corresponding advantages and disadvantages. Finally, this article highlights the significance of recovering and reusing dyes, alkalis, and electrolytes in wastewater treatment. Additionally, it emphasizes the necessity of performing technoeconomic analyses and life cycle assessments (LCA) on wastewater treatment plants.

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“…ASM3 provides a metabolic network for nitrification and denitrification. Since ASM3 was first proposed by Gujer et al (1999), researchers (e.g., Kaelin et al (2009), Hauduc et al (2013), and Bahar and Ciggin (2016)) have developed their respective metabolic models based on ASM3 to meet the different research needs better. The difference between the extended BGSM‐A and the basic BGSM lies in the reaction network, that is, the reaction rate term (

{R}_{Ri}

and

{R}_{Xi}

) in Equations of Appendices.…”

Section: Biomass Sampling and Numerical Simulationsmentioning

confidence: 99%

Perturbations of heterotrophs and autotrophs in tidally dynamic coastal sediments: Development of a scalable model

Yao,

Kong,

Zhang

et al. 2023

Hydrological Processes

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Tidal wetlands undergoing regular tidal inundation contribute more than 60% CO2 uptake of the coastal ocean. However, a comprehensive understanding of tidal microbial spatial distribution is poorly known, giving rise to previously ignored perturbations of microbial biomass in heterogeneous nearshore aquifers. In most traditional reactive models of nearshore aquifers until now, the spatio‐temporal production of microbial biomass was not considered, and reaction rates depended only on the first‐order decay of nutrient inputs. Here, using a biomass‐based model with tidal fluctuations, we identify autotrophic and heterotrophic high biomass zones that can dictate the hot spots of aerobic respiration, nitrification, and denitrification. Crucially, the accretive microbial biomass in eutrophic environments may minimize the hydraulic conductivity and weaken the tide‐driven upper saline plume, but slightly enhance seawater wedge intrusion. In addition, our simulations recreated empirical patterns of N removal in contaminated subterranean estuaries and led to a description of general rules of autotrophic and heterotrophic processes in sediments. Our findings point to previously ignored perturbations of microbial biomass to reactions in nearshore aquifers and underscore that the microbial distribution in coastal sediments has its inherent regularity to environmental alteration.

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A simple kinetic modeling approach for aerobic stabilization of real waste activated sludge

Cited by 17 publications

References 20 publications

Model-based comparison of sequencing batch reactors and continuous-flow activated sludge processes for biological wastewater treatment

Model-based comparison of sequencing batch reactors and continuous-flow activated sludge processes for biological wastewater treatment

Recent Advances in the Remediation of Textile-Dye-Containing Wastewater: Prioritizing Human Health and Sustainable Wastewater Treatment

Perturbations of heterotrophs and autotrophs in tidally dynamic coastal sediments: Development of a scalable model

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