Unravelling the genetic and functional diversity of dominant bacterial communities involved in manure co-composting bioremediation of complex crude oil waste sludge

Bacterial Communities Associated with Crude Oil Bioremediation through Composting Approaches with Indigenous Bacterial Isolate

“…This explains the insignificant difference in the bioremediation efficiencies between the two composted treatments as the main bacterial community compositions and dynamics were similar. This point is in contrast with a recent study where the indigenous Pseudomonas was found to be the most abundant genus in the composting treatment with different manures [11]. The disappearance of P. aeruginosa suggested that this species could not survive during the composting process, which brings us to the next question of which particular conditions may have such an impact on this species.…”

“…A few reports have investigated the bacterial community in different composting materials. For example, animal manures were used to co-compost with crude oil waste sludge and the bacterial community analysis showed that Bacillus, Lysinibacillus, Microbacterium, Burkholderia, Dietzia, Rhodococcus, Pseudomonas, and Paeniclostridium were the dominant genera with 36.5-99.9% polyaromatic hydrocarbon reduction [11]. Another work on the use of food waste supernatant for composting bioremediation of long-chain crude oil revealed that Acinetobacter and Aquabacterium dominated in the community along with Brevundimonas and Pseudomonas with the resultant bioremediation efficiency of 49.3% [12].…”

Bioremediation of soils contaminated by hydrocarbons using animal manure, a systematic review during the years 2017-2022.

“…Sin embargo, al ser el estiércol de especies más utilizada, no acredita que sean los más eficientes, ya que trabajando bajo las mismas características el estiércol de cerdo y de caballo resultaron tener un porcentaje mayor de degradación que el de aves y vaca con 99.90 -99.61% y 99.17 -99.85%, respectivamente [19]. En un estudio más reciente, se comprobó que la mezcla de esos cuatro estiércoles más la adición de un cóctel bacteriano logró la degradación del 99% de los HAP presentes [27].…”

“…El resultado con mayor porcentaje de degradación del hidrocarburo fue de 99% en el cual se emplearon la combinación de estiércol (vaca + ave + cerdo + caballo) y coctel bacteriano donde el contaminante del suelo fueron los Hidrocarburos poliaromáticos totales en un suelo enmendado con astillas de madera (proporción de 1:2) [27]. De igual manera, el estiércol de vaca + eisenia foetida, al emplear vermicompostaje en un suelo contaminado con hidrocarburos aromáticos policíclicos (HAP) se obtuvo un porcentaje de degradación del 99% [34].…”

Biodegradation of crude oil present in wastewaters: evaluation of biosurfactant production and catechol 2,3 dioxygenase activity

“…Crude oil is an essential natural energy resource for many anthropogenic activities; however, it is associated with the generation of environmental pollution. This is caused by toxic compounds in crude oil (CO), and it has now become a target issue of concern (Dourado et al, 2017;Khatoon & Malik, 2019;Ubani et al, 2022).…”