Ertit Taştan Burcu
Polatlı Faculty of Science & Arts, Gazi University, 06900, Polatlı, Ankara, Turkey; Health Services Vocational School, Gazi University, 06830, Gölbaşı, Ankara, Turkey; Life Sciences Application and Research Center, Gazi University, 06830, Gölbaşı, Ankara, Turkey.
J Environ Manage. 2017 Sep 15;200:46-52. doi: 10.1016/j.jenvman.2017.05.062. Epub 2017 May 26.
In Turkey approximately 45 million tons of coals are burned in a year and 19.3 million tons of fly ash have emerged. The bioremediation of heavy metals or different elements from fly ash makes them bio-available. However, in previous studies, requiring of long operational time and failing to show tolerance to high pulp densities of fly ash of selected fungal species makes them impractical. In this work, bioremediation of fly ash by new isolated fungi Fusarium oxysporum and Penicillium glabrum were investigated in one step and two step bioremediation process. Ca, Si, Fe and S were found to be considerable amount in studied fly ashes by ED-XRF element analysis. The bioremediation yields of Mo (100%), S (64.36%) Ni (50%) and Cu (33.33%) by F. oxysporum were high. The remediated elements by P. glabrum in fly ash were Mo (100%), S (57.43%), Ni (25%), Si (24.66%), V (12.5%), Ti (5%) and Sr (3.2%). The isolation of high fly ash resistant fungi and reduction of the bioremediation time will allow the practical applications of the bioremediation technology when it is scaled up.
在土耳其，每年大约燃烧4500万吨煤炭，产生1930万吨飞灰。从飞灰中对重金属或不同元素进行生物修复可使其具有生物可利用性。然而，在以往的研究中，所选真菌物种需要较长的操作时间且对高浓度飞灰浆体缺乏耐受性，这使得它们不切实际。在这项工作中，研究了新分离的尖孢镰刀菌和光裸青霉在一步和两步生物修复过程中对飞灰的生物修复情况。通过能量色散X射线荧光光谱（ED-XRF）元素分析发现，在所研究的飞灰中钙、硅、铁和硫的含量相当可观。尖孢镰刀菌对钼（100%）、硫（64.36%）、镍（50%）和铜（33.33%）的生物修复率很高。光裸青霉在飞灰中修复的元素有钼（100%）、硫（57.43%）、镍（25%）、硅（24.66%）、钒（12.5%）、钛（5%）和锶（3.2%）。分离出高抗飞灰真菌并缩短生物修复时间将使生物修复技术在扩大规模时得以实际应用。
