Microbes as vital additives for solid waste composting

Abstract

Composting is a natural process that stems through microbial succession, marking the degradation and stabilization of organic matter present in waste. The use of microbial additives during composting is considered highly efficient, likely to enhance the production of different enzymes resulting in better rate of waste degradation. In lesser developed countries, composting has emerged as a vital technology to recycle the biodegradable waste while generating a useful product. Depending on the composition of the waste material, it can either directly undergo composting or homogenized prior to secondary waste treatment methods such as landfilling. However, a relatively expensive downstream handling all along is a main hurdle towards economics of the process. Although basic methodology and recent approaches are known in crucial aspects of the process through various reviews, exploring the behavior of effective microbial additives will be resourceful. In this review, to fill in the gap, studies related to microbial composting of municipal solid and food waste were acknowledged. Here in, factors that could slow down the composting process and affect the compost quality were addressed. Lastly, the review pictured a positive simulation and stated how excellent results, can be achieved by microbial additives during composting.

The role of Serendipita indica and Lactobacilli mixtures on mitigating mycotoxins and heavy metals’ risks of contaminated sewage sludge and its composts

“…5 , indicated also that the biotic compositing can provide nutrients for soil amendment safely. These findings were closely in agreement with those of 51 who reported that the microbial addition during composting is considered highly effective due to the production enhancing of different enzymes resulting in rate acceleration of waste degradation. After 25 days, the biodegradation ability of these microbes was not affected after being added to the soil.…”

“…After 25 days, the biodegradation ability of these microbes was not affected after being added to the soil. Our results match 51 who used Aspergillus niger to removing heavy metals via a bioleaching process. Even though the performance of their method was more effective in reducing Pb and Zn more than our treatments, our method was more effective in reducing Fe, Cu, Cd, As, and Al.…”

Livestock Manure Type Affects Microbial Community Composition and Assembly During Composting

“…Bacteria and fungi are the most abundant and active microbes involved in composting (Rastogi et al, 2020). While bacteria are responsible for a large proportion of decomposition and heat generation in compost (Lopez-Gonzalez et al, 2015), fungi are capable of decomposing complex polymers present in the compost (Yamamoto and Nakai, 2019).…”

Study of the Conditions for Accelerating the Composting Process when Adding Microbial Communities

“…The samples of the mixture weighing 5 g were placed in 250 cm³ flasks, 50 cm³ of distilled water were added and shaken for 1:00. They were filtered using a folded filter to determine pH, meso-and thermophilic microorganisms and germination coefficients [Rastogi et al 2020]. The pH value of the aqueous extract of the mixture was determined using a «Testo 206-pH3» laboratory pH meter.…”