Over the past decades, several materials utilized as biocarriers for immobilization of microorganisms have been gaining popularity showing different degrees of effectiveness. However, information concerning their effects on sequencing batch biofilm reactors (SBBR) performance is still lacking. There is currently no single widely acceptable material documented for proper biofilm formation, as most materials cannot achieve satisfactory level. Problems of biocarrier also exists due to the emergence of newer and more complex pollutants. Therefore, resource-efficient and environmentally friendly biocarriers are a call of the hour. This article thus, presents a systematic literature review of existing research articles on the various advances made between 2005 and 2021 about biocarrier physical properties, and performances with specific focus on their contributions in biofilm formation, nutrients and organic matter removal. This is to establish their role as central elements in biofilm formation. The review further described the operational challenges, mass transfer considerations, and recommendations made during successful utilization of the biocarriers in SBBR systems. Future research areas that may ultimately lead to large-scale commercial application of this biocarriers and will result in sustainable and environmentally friendly solution to the problems created during wastewater treatment have also been identified. This paper suggests that future researchers investigate the efficiency of composite biocarriers. It is believed that information contained in this review will increase readers fundamental knowledge, guide future researchers and be incorporated into future works on experimentally-based studies on biocarriers in SBBR systems.

在过去的几十年里，几种用作固定微生物的生物载体的材料越来越受欢迎，显示出不同程度的有效性。然而，关于它们对序批式生物膜反应器 (SBBR) 性能的影响的信息仍然缺乏。目前没有单一的广泛接受的材料可用于适当的生物膜形成，因为大多数材料无法达到令人满意的水平。由于更新和更复杂的污染物的出现，生物载体的问题也存在。因此，资源高效且环境友好的生物载体是当下的潮流。因此，本文对 2005 年至 2021 年间关于生物载体物理特性的各种进展的现有研究文章进行了系统的文献综述，和表演，特别关注它们在生物膜形成、营养物质和有机物去除方面的贡献。这是为了确立它们在生物膜形成中作为核心要素的作用。该审查进一步描述了在 SBBR 系统中成功利用生物载体期间的操作挑战、传质注意事项和建议。未来的研究领域可能最终导致这种生物载体的大规模商业应用，并将为废水处理过程中产生的问题提供可持续和环保的解决方案。本文建议未来的研究人员调查复合生物载体的效率。相信本评论中包含的信息将增加读者的基础知识，