Assessment of <i>Aspergillus niger</i> Strain’s Suitability for Arsenate-Contaminated Water Treatment and Adsorbent Recycling via Bioextraction in a Laboratory-Scale Experiment
In this work, the viability of bioaccumulation and bioextraction processes for arsenic removal from contaminated waters, as well as the recycling of arsenate-treated amorphous ferric oxyhydroxide adsorbent (FeOOH) were evaluated using the common soil microscopic filamentous fungus <i>Aspergill...
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| Format: | Article |
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MDPI AG
2020-10-01
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| Series: | Microorganisms |
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| Online Access: | https://www.mdpi.com/2076-2607/8/11/1668 |
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| author | Eva Duborská Kinga Szabó Marek Bujdoš Hana Vojtková Pavol Littera Edmund Dobročka Hyunjung Kim Martin Urík |
| author_facet | Eva Duborská Kinga Szabó Marek Bujdoš Hana Vojtková Pavol Littera Edmund Dobročka Hyunjung Kim Martin Urík |
| author_sort | Eva Duborská |
| collection | DOAJ |
| description | In this work, the viability of bioaccumulation and bioextraction processes for arsenic removal from contaminated waters, as well as the recycling of arsenate-treated amorphous ferric oxyhydroxide adsorbent (FeOOH) were evaluated using the common soil microscopic filamentous fungus <i>Aspergillus niger</i>. After treating the contaminated arsenate solution (100 mg As L<sup>−1</sup>) with FeOOH, the remaining solution was exposed to the growing fungus during a static 19-day cultivation period to further decrease the arsenic concentration. Our data indicated that although the FeOOH adsorbent is suitable for arsenate removal with up to 84% removal efficiency, the fungus was capable of accumulating only up to 13.2% of the remaining arsenic from the culture media. This shows that the fungus <i>A. niger</i>, although highly praised for its application in environmental biotechnology research, was insufficient for decreasing the arsenic contamination to an environmentally acceptable level. However, the bioextraction of arsenic from arsenate-treated FeOOH proved relatively effective for reuse of the adsorbent. Due to its production of acidic metabolites, which decreased pH below 2.7, the fungal strain was capable of removing of up to 98.2% of arsenic from the arsenate-treated FeOOH adsorbent. |
| first_indexed | 2024-03-10T15:18:01Z |
| format | Article |
| id | doaj.art-9916dcf4f2b24ed3b552527b612efdb8 |
| institution | Directory Open Access Journal |
| issn | 2076-2607 |
| language | English |
| last_indexed | 2024-03-10T15:18:01Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Microorganisms |
| spelling | doaj.art-9916dcf4f2b24ed3b552527b612efdb82023-11-20T18:45:05ZengMDPI AGMicroorganisms2076-26072020-10-01811166810.3390/microorganisms8111668Assessment of <i>Aspergillus niger</i> Strain’s Suitability for Arsenate-Contaminated Water Treatment and Adsorbent Recycling via Bioextraction in a Laboratory-Scale ExperimentEva Duborská0Kinga Szabó1Marek Bujdoš2Hana Vojtková3Pavol Littera4Edmund Dobročka5Hyunjung Kim6Martin Urík7Institute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 84215 Bratislava, SlovakiaInstitute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 84215 Bratislava, SlovakiaInstitute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 84215 Bratislava, SlovakiaDepartment of Environmental Engineering, Faculty of Mining and Geology (FMG), Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava-Poruba, Czech RepublicInstitute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 84215 Bratislava, SlovakiaInstitute of Electrical Engineering, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, SlovakiaDepartment of Mineral Resources and Energy Engineering, Jeonbuk National University, 567, Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk 54896, KoreaInstitute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 84215 Bratislava, SlovakiaIn this work, the viability of bioaccumulation and bioextraction processes for arsenic removal from contaminated waters, as well as the recycling of arsenate-treated amorphous ferric oxyhydroxide adsorbent (FeOOH) were evaluated using the common soil microscopic filamentous fungus <i>Aspergillus niger</i>. After treating the contaminated arsenate solution (100 mg As L<sup>−1</sup>) with FeOOH, the remaining solution was exposed to the growing fungus during a static 19-day cultivation period to further decrease the arsenic concentration. Our data indicated that although the FeOOH adsorbent is suitable for arsenate removal with up to 84% removal efficiency, the fungus was capable of accumulating only up to 13.2% of the remaining arsenic from the culture media. This shows that the fungus <i>A. niger</i>, although highly praised for its application in environmental biotechnology research, was insufficient for decreasing the arsenic contamination to an environmentally acceptable level. However, the bioextraction of arsenic from arsenate-treated FeOOH proved relatively effective for reuse of the adsorbent. Due to its production of acidic metabolites, which decreased pH below 2.7, the fungal strain was capable of removing of up to 98.2% of arsenic from the arsenate-treated FeOOH adsorbent.https://www.mdpi.com/2076-2607/8/11/1668arsenicbioaccumulationbioextractionferric oxyhydroxidesfilamentous fungi |
| spellingShingle | Eva Duborská Kinga Szabó Marek Bujdoš Hana Vojtková Pavol Littera Edmund Dobročka Hyunjung Kim Martin Urík Assessment of <i>Aspergillus niger</i> Strain’s Suitability for Arsenate-Contaminated Water Treatment and Adsorbent Recycling via Bioextraction in a Laboratory-Scale Experiment Microorganisms arsenic bioaccumulation bioextraction ferric oxyhydroxides filamentous fungi |
| title | Assessment of <i>Aspergillus niger</i> Strain’s Suitability for Arsenate-Contaminated Water Treatment and Adsorbent Recycling via Bioextraction in a Laboratory-Scale Experiment |
| title_full | Assessment of <i>Aspergillus niger</i> Strain’s Suitability for Arsenate-Contaminated Water Treatment and Adsorbent Recycling via Bioextraction in a Laboratory-Scale Experiment |
| title_fullStr | Assessment of <i>Aspergillus niger</i> Strain’s Suitability for Arsenate-Contaminated Water Treatment and Adsorbent Recycling via Bioextraction in a Laboratory-Scale Experiment |
| title_full_unstemmed | Assessment of <i>Aspergillus niger</i> Strain’s Suitability for Arsenate-Contaminated Water Treatment and Adsorbent Recycling via Bioextraction in a Laboratory-Scale Experiment |
| title_short | Assessment of <i>Aspergillus niger</i> Strain’s Suitability for Arsenate-Contaminated Water Treatment and Adsorbent Recycling via Bioextraction in a Laboratory-Scale Experiment |
| title_sort | assessment of i aspergillus niger i strain s suitability for arsenate contaminated water treatment and adsorbent recycling via bioextraction in a laboratory scale experiment |
| topic | arsenic bioaccumulation bioextraction ferric oxyhydroxides filamentous fungi |
| url | https://www.mdpi.com/2076-2607/8/11/1668 |
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