Towards the biofilm characterization and regulation in biological wastewater treatment

Huang, Hui; Peng, Chong; Peng, Pengcheng; Lin, Yuan; Zhang, Xuxiang; Ren, Hongqiang

doi:10.1007/s00253-018-9511-6

Cited by 76 publications

(52 citation statements)

References 137 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…After the GAC media particles became exhausted, the rough porous surfaces of this GAC are amenable to colonization of bacteria and formation of bacterial biofilms, which degrade phosphorous and nitrogen-containing compounds, organic carbon as well as other entrapped contaminants in the influent water (Simpson, 2008). Currently, biofilm reactors are developed for wastewater treatment such as membrane reactors, moving beds, fluidized beds, and rotating contactors (Huang et al, 2019).…”

Section: Wastewater Treatmentmentioning

confidence: 99%

Beyond Risk: Bacterial Biofilms and Their Regulating Approaches

et al. 2020

View full text Add to dashboard Cite

Bacterial biofilms are complex surface attached communities of bacteria held together by self-produced polymer matrixs mainly composed of polysaccharides, secreted proteins, and extracellular DNAs. Bacterial biofilm formation is a complex process and can be described in five main phases: (i) reversible attachment phase, where bacteria non-specifically attach to surfaces; (ii) irreversible attachment phase, which involves interaction between bacterial cells and a surface using bacterial adhesins such as fimbriae and lipopolysaccharide (LPS); (iii) production of extracellular polymeric substances (EPS) by the resident bacterial cells; (iv) biofilm maturation phase, in which bacterial cells synthesize and release signaling molecules to sense the presence of each other, conducing to the formation of microcolony and maturation of biofilms; and (v) dispersal/detachment phase, where the bacterial cells depart biofilms and comeback to independent planktonic lifestyle. Biofilm formation is detrimental in healthcare, drinking water distribution systems, food, and marine industries, etc. As a result, current studies have been focused toward control and prevention of biofilms. In an effort to get rid of harmful biofilms, various techniques and approaches have been employed that interfere with bacterial attachment, bacterial communication systems (quorum sensing, QS), and biofilm matrixs. Biofilms, however, also offer beneficial roles in a variety of fields including applications in plant protection, bioremediation, wastewater treatment, and corrosion inhibition amongst others. Development of beneficial biofilms can be promoted through manipulation of adhesion surfaces, QS and environmental conditions. This review describes the events involved in bacterial biofilm formation, lists the negative and positive aspects associated with bacterial biofilms, elaborates the main strategies currently used to regulate establishment of harmful bacterial biofilms as well as certain strategies employed to encourage formation of beneficial bacterial biofilms, and highlights the future perspectives of bacterial biofilms.

show abstract

Section: Wastewater Treatmentmentioning

confidence: 99%

Beyond Risk: Bacterial Biofilms and Their Regulating Approaches

et al. 2020

View full text Add to dashboard Cite

show abstract

“…A biofilm is an organized aggregate of microorganisms living within a self-produced matrix of extracellular polymeric substances (EPS) that is attached to a biotic or abiotic surface [8,9,10]. It is considered to be one of the most widely distributed and successful modes of life on the Earth [11], and in most natural environments, a biofilm is the predominating microbial lifestyle [12].…”

Section: Introductionmentioning

confidence: 99%

Biofilms: The Microbial “Protective Clothing” in Extreme Environments

Yin

Wang

Liu

et al. 2019

IJMS

631

355

View full text Add to dashboard Cite

Microbial biofilms are communities of aggregated microbial cells embedded in a self-produced matrix of extracellular polymeric substances (EPS). Biofilms are recalcitrant to extreme environments, and can protect microorganisms from ultraviolet (UV) radiation, extreme temperature, extreme pH, high salinity, high pressure, poor nutrients, antibiotics, etc., by acting as “protective clothing”. In recent years, research works on biofilms have been mainly focused on biofilm-associated infections and strategies for combating microbial biofilms. In this review, we focus instead on the contemporary perspectives of biofilm formation in extreme environments, and describe the fundamental roles of biofilm in protecting microbial exposure to extreme environmental stresses and the regulatory factors involved in biofilm formation. Understanding the mechanisms of biofilm formation in extreme environments is essential for the employment of beneficial microorganisms and prevention of harmful microorganisms.

show abstract

“…Currently, biofilms are already used to create microbial fuel cells [50], in wastewater treatment [51,52], as biosensors [53,54,54] and in biotechnology [56,57,58,59] (Fig. 1).…”

Section: Discussionmentioning

confidence: 99%