Efficiency of various biofilm carriers and microbial interactions with substrate in moving bed-biofilm reactor for environmental wastewater treatment

• Published in: Bioresource technology Vol. 359; p. 127421
• Main Authors: Raj Deena, Santhana, Kumar, Gopalakrishnan, Vickram, A.S., Rani Singhania, Reeta, Dong, Cheng–Di, Rohini, Karunakaran, Anbarasu, K., Thanigaivel, S., Ponnusamy, Vinoth Kumar
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.09.2022
• Subjects: Bio-carrier; Moving Bed-Biofilm Reactor; Treatment efficiency; Wastewater treatment; Bio-carrier; Moving Bed-Biofilm Reactor; Wastewater treatment; Treatment efficiency
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2022.127421

[Display omitted] •Role of different biomedia carrier and its properties in MBBR are discussed.•Biomedia carriers are highly preferred for wastewater treatment.•Efficiency of MBBR is directly influenced by the geometry of biofilm carriers.•Material shapes, pore size and surface area directly impact bioremediation process.•Thickness of biofilm and controlled scaling influences the performance of MBBR. In a moving bed-biofilm reactor (MBBR), the fluidization efficiency, immobilization of microbial cells, and treatment efficiency are directly influenced by the shape and pores of biofilm carriers. Moreover, the efficacy of bioremediation mainly depends on their interaction interface with microbes and substrate. This review aims to comprehend the role of different carrier properties such as material shapes, pores, and surface area on bioremediation productivity. A porous biofilm carrier with surface ridges containing spherical pores sizes > 1 mm can be ideal for maximum efficacy. It provides diverse environments for cell cultures, develops uneven biofilms, and retains various cell sizes and biomass. Moreover, the thickness of biofilm and controlled scaling shows a significant impact on MBBR performance. Therefore, the effect of these parameters in MBBR is discussed detailed in this review, through which existing literature and technical strategies that focus on the surface area as the primary factor can be critically assessed.