Naslov
Bioremediation of MP-polluted waters using bacteria Bacillus licheniformis, Lysinibacillus massiliensis, and mixed culture of Bacillus sp. and Delftia acidovorans

Autori
Kučić Grgić, Dajana ; Miloloža, Martina ; Lovrinčić, Ema ; Kovačević, Antonija ; Cvetnić, Matija ; Ocelić Bulatović, Vesna ; Prevarić, Viktorija ; Bule, Kristina ; Ukić, Šime ; Markić, Marinko ; Bolanča, Tomislav

Izvornik
Chemical and biochemical engineering quarterly (0352-9568) 35 (2021), 2; 205-224

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
bioremediation ; microplastics ; LDPE ; PS ; Bacillus licheniformis ; Lysinibacillus massiliensis ; Delftia acidovorans ; Bacillus sp.

Sažetak
Microplastic particles (MPs) are widely distributed pollutants in the environment. While a growing number of studies have shown that MPs are toxic to plant and animal life, systemic efforts to reduce their presence have been scarce. Low- density polyethylene (LDPE) and polystyrene (PS) are one of the most common among all plastic- forming MPs. In this study, pure bacterial strains, Bacillus licheniformis and Lysinibacillus massiliensis, and a mixed bacterial culture of Delftia acidovorans and Bacillus sp., were used for biodegradation of LDPE and PS microplastics. Biodegradation of MP-PS and MP-LDPE of particle size 300 – 500 μm was carried out under batch operating conditions at a temperature of 25 ± 2 °C, pH values of 7.15, and 160 rpm during 22 days. The obtained results showed that mixed bacterial cultures degraded MP-LDPE and MP-PS better than pure bacterial cultures, and the biodegradation efficiency was higher for MPLDPE than for MP-PS, as indicated by greater reduction in peak intensity and spectral deformation, higher colony forming unit (CFU), and inorganic carbon (IC) values.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Interdisciplinarne tehničke znanosti

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