Journal ArticleDOI
Stratification of Extracellular Polymeric Substances (EPS) for Aggregated Anammox Microorganisms.
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TLDR
The results showed that slime and TB-EPS (tightly bound EPS) were closely related with water quality and sludge morphology, and could be used as the indicators for anammox microbial survival ability and microbial aggregate morphology.Abstract:
Sludge aggregation and biofilm formation are the most effective approaches to solve the washout of anammox microorganisms. In this study, the structure and composition of EPS (extracellular polymeric substances) were investigated to elucidate the factors for the anammox aggregation property. Anammox sludge taken from 18 lab-scale and pilot-scale reactors treating different types of wastewater was analyzed using EEM-PARAFAC (excitation–emission matrix and parallel factor analysis), FTIR (Fourier transform infrared spectroscopy) and real-time PCR combined with multivariate statistical analysis. The results showed that slime and TB-EPS (tightly bound EPS) were closely related with water quality and sludge morphology, and could be used as the indicators for anammox microbial survival ability and microbial aggregate morphology. Furthermore, slime secreted from anammox bacterial cells may be exhibited higher viscosity to the sludge surface and easily formed the gel network to aggregate. Large amounts of hydroph...read more
Citations
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Journal ArticleDOI
Critical review on dewatering of sewage sludge: Influential mechanism, conditioning technologies and implications to sludge re-utilizations.
Boran Wu,Xiaohu Dai,Xiaoli Chai +2 more
TL;DR: It is proposed that a unified theory for sludge dewaterability improvement remains to be established, as how the molecular structures of sludge compositions affect the solid-water interface behavior requires to be deepened, which will further unravel the mechanism behind strong water-holding capacities of bio-flocs.
Journal ArticleDOI
A critical review of one-stage anammox processes for treating industrial wastewater: Optimization strategies based on key functional microorganisms.
TL;DR: This review summarizes and discusses the optimized strategies that promote the operation of one-stage nitritation/anammox process and focuses on strategies related to the retention of anammox biomass through granular sludge or biofilm.
Journal ArticleDOI
Characterization of stratified EPS and their role in the initial adhesion of anammox consortia.
TL;DR: The role of stratified EPS on the initial formation of anammox biofilms is clarifies and a theoretical basis for accelerating the formation of a compact biofilm structure is provided.
Journal ArticleDOI
Revealing the role of adsorption in ciprofloxacin and sulfadiazine elimination routes in microalgae.
TL;DR: Findings reveal the possible biological mechanisms of biosorption and biodegradation of PPCPs in microalgae, which could further enhance the feasibility of microalgal applications for simultaneous P PCPs remediation and alternative energy production.
Journal ArticleDOI
Understanding the Role of Extracellular Polymeric Substances on Ciprofloxacin Adsorption in Aerobic Sludge, Anaerobic Sludge, and Sulfate-Reducing Bacteria Sludge Systems.
TL;DR: The results showed that the SRB sludge had the highest specific ciprofloxacin removal rate via adsorption and biodegradation, which implied that EPS played a critical role in CIP removal.
References
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A study of the conditions and mechanism of the diphenylamine reaction for the colorimetric estimation of deoxyribonucleic acid
TL;DR: The present study arose from the observation that a more intense colour was sometimes produced if, instead of being heated at 1000 for 10 min., the reaction mixture was allowed to stand overnight at room temperature.
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The biofilm matrix
TL;DR: The functions, properties and constituents of the EPS matrix that make biofilms the most successful forms of life on earth are described.
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Spectrofluorometric characterization of dissolved organic matter for indication of precursor organic material and aromaticity
Diane M. McKnight,Elizabeth W. Boyer,Paul Westerhoff,Peter T. Doran,Thomas Kulbe,Dale T. Andersen +5 more
TL;DR: In this article, the authors studied the fluorescence properties of fulvic acids isolated from streams and rivers receiving predominantly terrestrial sources of organic material and from lakes with microbial sources, and showed that the ratio of the emission intensity at a wavelength of 450 nm to that at 500 nm, obtained with an excitation of 370 nm, can serve as a simple index to distinguish sources of isolated aquatic fulvic acid.
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Extracellular polymeric substances (EPS) of microbial aggregates in biological wastewater treatment systems: a review.
TL;DR: As EPS are very complex, the knowledge regarding EPS is far from complete and much work is still required to fully understand their precise roles in the biological treatment process.
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A review of the biochemistry of heavy metal biosorption by brown algae
TL;DR: The emphasis is on outlining the biochemical properties of the brown algae that set them apart from other algal biosorbents, including alginate and fucoidan, which are chiefly responsible for heavy metal chelation.