4.8 Article

Carbon source affects the resource recovery in aerobic granular sludge systems treating wastewater

Related references

Note: Only part of the references are listed.
Article Engineering, Chemical

Bis-(3′-5′)-cyclic dimeric guanosine monophosphate (c-di-GMP) mediated membrane fouling in membrane bioreactor

Hang Chen et al.

Summary: This study reveals the key role of bis-(3'-5')-cyclic dimeric guanosine monophosphate (c-di-GMP) in membrane biofouling process in membrane bioreactor (MBR). The high intracellular c-di-GMP levels in membrane foulants were strongly correlated to elevated extracellular polymeric substances (EPS) contents, leading to accelerated membrane fouling rates. The enrichment of specific bacteria related to c-di-GMP and their stronger c-di-GMP metabolic abilities in membrane foulants highlight the importance of c-di-GMP second-messenger pathway in regulating EPS production and governing the membrane biofouling process.

JOURNAL OF MEMBRANE SCIENCE (2022)

Article Environmental Sciences

Rapid granulation of aerobic granular sludge and maintaining its stability by combining the effects of multi-ionic matrix and bio-carrier in a continuous-flow membrane bioreactor

Bangqiao Qiu et al.

Summary: The combination of multi-ionic matrix and bio-carrier was found to promote the rapid formation and long-term stability of AGS, reducing negative charges and forming stable circulating water flow. Additionally, complex microbial communities facilitated efficient removal of organic pollutants and nutrients.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

Article Biotechnology & Applied Microbiology

Evaluation of the production of alginate-like exopolysaccharides (ALE) and tryptophan in aerobic granular sludge systems

Silvio Luiz de Sousa Rollemberg et al.

Summary: The engineering and microbiological aspects involved in the production of alginate-like exopolysaccharides (ALE) and tryptophan (TRY) in aerobic granular sludge systems were evaluated. The results showed that controlling the short anoxic phase and sludge retention time, as well as substrate concentration, plays a key role in increasing the content of ALE and TRY in granules. Microbiological analysis indicated that slow-growing heterotrophic microbial groups may be associated with ALE production, while EPS-producing fermentative bacteria may be linked to TRY production. Economically, ALE recovery has the potential to reduce operational expenditure in larger sewage treatment plants or industrial wastewaters with high organic loads.

BIOPROCESS AND BIOSYSTEMS ENGINEERING (2021)

Review Environmental Sciences

Extracellular biopolymers recovered as raw biomaterials from waste granular sludge and potential applications: A critical review

Cuijie Feng et al.

Summary: Granular sludge (GS) produces extracellular polymeric substances (EPS) which play a crucial role in the structure, stability, and functionality of the granules. The diverse components of EPS offer potential applications and sustainable raw material recovery, with emerging standards for extraction and particular attention to the recovery process. EPS-based biomaterials have a wide range of uses in industrial and environmental applications, and are expected to contribute significantly to the advancement of the circular economy in the coming years.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Article Environmental Sciences

Understanding of the mechanism of extracellular polymeric substances of aerobic granular sludge against tetracycline from the perspective of fluorescence properties

Zhengwen Li et al.

Summary: This study investigated the resistance mechanism of AGS-EPS against tetracycline, showing that tetracycline interacted with proteins and humic acid in AGS-EPS by forming stable complexes. Components with larger molecular weight in AGS-EPS interacted with tetracycline prior to those with smaller molecular weight, and tetracycline had the potential to bind with divalent cations in AGS-EPS, causing conformation changes of proteins.

SCIENCE OF THE TOTAL ENVIRONMENT (2021)

Review Environmental Sciences

Structural Characteristics of Aerobic Granular Sludge and Factors That Influence Its Stability: A Mini Review

Yizhi Hou et al.

Summary: Current research on aerobic granular sludge technology focuses on improving microbial biodiversity, settlement behavior, nitrogen and phosphorus removal efficiency, and shock load resistance. Challenges include slow-speed granulation and easy disintegration after granulation, which are crucial for the extended application of AGS technology. The review also discusses granulation models, microbial communities, and factors affecting particle structure stability.

WATER (2021)

Article Engineering, Environmental

Impact of feeding strategy on the performance and operational stability of aerobic granular sludge treating high-strength ammonium concentrations

Vicente Elicio P. S. G. da Silva et al.

Summary: The study evaluated the impact of different feeding strategies on the performance and operational stability of AGS systems treating high-strength ammonium concentrations. Results showed that distributing substrate throughout the cycle minimized stability issues, biomass retention, and nitrite accumulation, while achieving better total phosphorus and total nitrogen removal rates.

JOURNAL OF WATER PROCESS ENGINEERING (2021)

Article Environmental Sciences

Resource recovery in aerobic granular sludge systems: is it feasible or still a long way to go?

Clara de Amorim de Carvalho et al.

Summary: This review highlights the influence of operational parameters on the recovery of ALE, tryptophan, phosphorus, and PHA from AGS systems, with the carbon to nitrogen ratio, sludge retention time, and salinity levels identified as key factors. Existing knowledge gaps in the scientific literature on the recovery of these resources were also identified.

CHEMOSPHERE (2021)

Article Agricultural Engineering

Effects of carbon source on the formation, stability, bioactivity and biodiversity of the aerobic granule sludge

Silvio Luiz de Sousa Rollemberg et al.

BIORESOURCE TECHNOLOGY (2019)

Review Biotechnology & Applied Microbiology

Metabolic engineering for improving l-tryptophan production in Escherichia coli

Hao Niu et al.

JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY (2019)

Review Agricultural Engineering

Aerobic granular sludge technology: Mechanisms of granulation and biotechnological applications

Y. V. Nancharaiah et al.

BIORESOURCE TECHNOLOGY (2018)

Article Environmental Sciences

The Energy & Raw Materials Factory: Role and Potential Contribution to the Circular Economy of the Netherlands

Kees van Leeuwen et al.

ENVIRONMENTAL MANAGEMENT (2018)

Review Microbiology

Diversity of Cyclic Di-GMP-Binding Proteins and Mechanisms

Shan-Ho Chou et al.

JOURNAL OF BACTERIOLOGY (2016)

Review Biotechnology & Applied Microbiology

Enhanced biological phosphorus removal with different carbon sources

Nan Shen et al.

APPLIED MICROBIOLOGY AND BIOTECHNOLOGY (2016)

Article Environmental Sciences

Fate of aerobic granular sludge in the long-term: The role of EPSs on the clogging of granular sludge porosity

Santo Fabio Corsino et al.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2016)

Article Biochemical Research Methods

DADA2: High-resolution sample inference from Illumina amplicon data

Benjamin J. Callahan et al.

NATURE METHODS (2016)

Article Agricultural Engineering

Accelerated aerobic granulation using alternating feed loadings: Alginate-like exopolysaccharides

Ya-Chun Yang et al.

BIORESOURCE TECHNOLOGY (2014)

Article Engineering, Environmental

Impact of influent COD/N ratio on disintegration of aerobic granular sludge

Jinghai Luo et al.

WATER RESEARCH (2014)

Article Mathematical & Computational Biology

Mapping global effects of the anti-sigma factor MucA in Pseudomonas fluorescens SBW25 through genome-scale metabolic modeling

Sven E. F. Borgos et al.

BMC SYSTEMS BIOLOGY (2013)

Article Engineering, Environmental

Breakage and growth towards a stable aerobic granule size during the treatment of wastewater

Marieska Verawaty et al.

WATER RESEARCH (2013)

Article Biotechnology & Applied Microbiology

Improved phosphate removal by selective sludge discharge in aerobic granular sludge reactors

J. P. Bassin et al.

BIOTECHNOLOGY AND BIOENGINEERING (2012)

Article Environmental Sciences

Effect of wastewater COD/N ratio on aerobic nitrifying sludge granulation and microbial population shift

Lei Wu et al.

JOURNAL OF ENVIRONMENTAL SCIENCES (2012)

Article Engineering, Environmental

Operational strategies for nitrogen removal in granular sequencing batch reactor

Fang-yuan Chen et al.

JOURNAL OF HAZARDOUS MATERIALS (2011)

Article Biotechnology & Applied Microbiology

Achieving the nitrite pathway using aeration phase length control and step-feed in an SBR removing nutrients from abattoir wastewater

Romain Lemaire et al.

BIOTECHNOLOGY AND BIOENGINEERING (2008)