An innovative bioremediation strategy using a bacterial consortium entrapped in chitosan beads

Vegetative cells of Bacillus pumilus entrapped in chitosan beads as a product for hydrocarbon biodegradation

“…Regarding its application in bioremediation of hexadecanecontaminated environments, it is important to mention that chitosanases are widely distributed in nature (Kumar, 2000), assuring biodegradation of chitosan beads and release of cells in situ. Recently, Angelim et al (2013) showed the advantages of using chitosan beads containing an immobilised bacterial consortium for bioremediation. The authors demonstrated that after the beads disintegrated in mangrove sediments, the cells were appropriately released into the environment (bioaugmentation) and the chitosan's oligomers became available as carbon and nitrogen sources (biostimulation), benefitting the entire microbial community.…”

“…The authors demonstrated that after the beads disintegrated in mangrove sediments, the cells were appropriately released into the environment (bioaugmentation) and the chitosan's oligomers became available as carbon and nitrogen sources (biostimulation), benefitting the entire microbial community. Hence, Angelim et al (2013) demonstrated that chitosan beads containing selected entrapped bacteria enable two bioremediation purposes, bioaugmentation and biostimulation, and thus represent an innovative approach for bioremediation of contaminated environments.…”

A Review of the Applications of Chitin and Its Derivatives in Agriculture to Modify Plant-Microbial Interactions and Improve Crop Yields

“…Wang et al [204] found that the chitosan treatment alongside mycorrhizal inoculation aided the bioremediation of soil polluted with a range of heavy metals by Elsholtzia splendens. Angelim et al [205] recently showed that encapsulating a consortium of different PGPR within chitosan helped with delivery, and stimulated the growth and activity of the bacteria for bioaugmentation and biostimulation of hydrocarbon-polluted soils. An additional study on crude oil contaminated seawater found that chitin/chitosan encapsulation improved the effectiveness and survival of bioremediating chitinolytic bacteria [206].…”

Bioremediation of crude oil‐contaminated soil by hydrocarbon‐degrading microorganisms immobilized on humic acid‐modified biofuel ash

“…Some carriers were also reported to improve the enzymatic activities of microbes, such as that of polyphenol oxidase and dehydrogenase, and transmission of oxygen into substrate . Agricultural wastes, such as peanut shell powder, sunflower seed husk, and biochar, as well as synthetic and natural polymers, have been used to produce MICs . Both biochar and activated carbon have good adsorption properties for petroleum contaminants and nutrients and exhibit optimal immobilization effects for microbes, but at a high cost.…”