Biosorption of Pentachlorophenol from Aqueous Solutions by Aspergillus Niger Biomass
Background: This study aimed to investigate the biosorption of pentachlorophenol on Aspergillus niger biomass as a method for removal of pentachlorophenol from aqueous solutions. Methods: Modified A. niger biomass with NaOH was used to absorb the pentachlorophenol. The impacts of various experimen...
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| Format: | Article |
| Language: | English |
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Arak University of Medical Sciences
2016-06-01
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| Series: | Iranian Journal of Toxicology |
| Subjects: | |
| Online Access: | http://ijt.arakmu.ac.ir/browse.php?a_id=461&sid=1&slc_lang=en |
| _version_ | 1818208301126516736 |
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| author | Reza Shokoohi Salah Azizi Seyed Amir Ghiasian Ali Poormohammadi |
| author_facet | Reza Shokoohi Salah Azizi Seyed Amir Ghiasian Ali Poormohammadi |
| author_sort | Reza Shokoohi |
| collection | DOAJ |
| description | Background: This study aimed to investigate the biosorption of pentachlorophenol on Aspergillus niger biomass as a method for removal of pentachlorophenol from aqueous solutions.
Methods: Modified A. niger biomass with NaOH was used to absorb the pentachlorophenol. The impacts of various experimental parameters like primary pentachlorophenol concentration, pH of the solution, contact time, and biomass dosage on the biosorption of pentachlorophenol were investigated.
Results: The correlation of contact time, pH and initial concentration with the biosorption of pentachlorophenol by A. niger biomass was statistically significant (P<0.001). Pentachlorophenol removal increased with decreasing pH of the solution and the maximum efficiency was obtained at pH=3. The equilibrium adsorption capacity was increased from 4.23 to 11.65 mg/g by increasing initial pentachlorophenol concentration from 10 to 40 mg/L, while pentachlorophenol removal efficiency decreased from 87 to 55%. Both Langmuir and Freundlich isotherms efficiently described adsorption equilibrium of pentachlorophenol on A. niger biomass. Correlation coefficients for the second order kinetic model were almost equal to one.
Conclusion: A. niger biomass can be used to reduce the toxicity of aqueous solutions containing pentachlorophenol in acidic pH conditions. |
| first_indexed | 2024-12-12T04:42:38Z |
| format | Article |
| id | doaj.art-cab49492866d45c0af14b0ea3699fd3c |
| institution | Directory Open Access Journal |
| issn | 2008-2967 2251-9459 |
| language | English |
| last_indexed | 2024-12-12T04:42:38Z |
| publishDate | 2016-06-01 |
| publisher | Arak University of Medical Sciences |
| record_format | Article |
| series | Iranian Journal of Toxicology |
| spelling | doaj.art-cab49492866d45c0af14b0ea3699fd3c2022-12-22T00:37:45ZengArak University of Medical SciencesIranian Journal of Toxicology2008-29672251-94592016-06-011043339Biosorption of Pentachlorophenol from Aqueous Solutions by Aspergillus Niger BiomassReza Shokoohi 0Salah Azizi 1Seyed Amir Ghiasian2Ali Poormohammadi 3Department of Environmental Health Engineering, Hamadan University of Medical Sciences, Hamedan, Iran.M.Sc of Environmental Health Engineering, Student Research Center, Hamadan University of Medical Sciences, Hamedan, Iran.Department of Mycology and Parasitology, Hamadan University of Medical Sciences, Hamedan, Iran.*Corresponding Author: E-mail: s.a.ghiasian@umsha.ac.irPh.D. by Research Student of Environmental Health Engineering, Social Development and Health Promotion Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.Background: This study aimed to investigate the biosorption of pentachlorophenol on Aspergillus niger biomass as a method for removal of pentachlorophenol from aqueous solutions. Methods: Modified A. niger biomass with NaOH was used to absorb the pentachlorophenol. The impacts of various experimental parameters like primary pentachlorophenol concentration, pH of the solution, contact time, and biomass dosage on the biosorption of pentachlorophenol were investigated. Results: The correlation of contact time, pH and initial concentration with the biosorption of pentachlorophenol by A. niger biomass was statistically significant (P<0.001). Pentachlorophenol removal increased with decreasing pH of the solution and the maximum efficiency was obtained at pH=3. The equilibrium adsorption capacity was increased from 4.23 to 11.65 mg/g by increasing initial pentachlorophenol concentration from 10 to 40 mg/L, while pentachlorophenol removal efficiency decreased from 87 to 55%. Both Langmuir and Freundlich isotherms efficiently described adsorption equilibrium of pentachlorophenol on A. niger biomass. Correlation coefficients for the second order kinetic model were almost equal to one. Conclusion: A. niger biomass can be used to reduce the toxicity of aqueous solutions containing pentachlorophenol in acidic pH conditions.http://ijt.arakmu.ac.ir/browse.php?a_id=461&sid=1&slc_lang=enAbsorptionAspergillus nigerCarcinogenicPentachlorophenol |
| spellingShingle | Reza Shokoohi Salah Azizi Seyed Amir Ghiasian Ali Poormohammadi Biosorption of Pentachlorophenol from Aqueous Solutions by Aspergillus Niger Biomass Iranian Journal of Toxicology Absorption Aspergillus niger Carcinogenic Pentachlorophenol |
| title | Biosorption of Pentachlorophenol from Aqueous Solutions by Aspergillus Niger Biomass |
| title_full | Biosorption of Pentachlorophenol from Aqueous Solutions by Aspergillus Niger Biomass |
| title_fullStr | Biosorption of Pentachlorophenol from Aqueous Solutions by Aspergillus Niger Biomass |
| title_full_unstemmed | Biosorption of Pentachlorophenol from Aqueous Solutions by Aspergillus Niger Biomass |
| title_short | Biosorption of Pentachlorophenol from Aqueous Solutions by Aspergillus Niger Biomass |
| title_sort | biosorption of pentachlorophenol from aqueous solutions by aspergillus niger biomass |
| topic | Absorption Aspergillus niger Carcinogenic Pentachlorophenol |
| url | http://ijt.arakmu.ac.ir/browse.php?a_id=461&sid=1&slc_lang=en |
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