Performance Evaluation of Magnetic-Multiwalled Carbon Nanotube in Removal of 2,4-DNP from Aqueous Solutions and Determining Toxicity Reduction
Background and Objective: In Iran, due to vast development of different chemical and petrochemical industries and water resource pollution to refractory organic matters, using a costeffective method for the removal of those pollutant from drinking water. The aim of this study was to evaluate the per...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | fas |
| Published: |
Alborz University of Medical Sciences
2016-09-01
|
| Series: | Muhandisī-i Bihdāsht-i Muḥīṭ |
| Subjects: | |
| Online Access: | http://jehe.abzums.ac.ir/browse.php?a_code=A-10-25-32&slc_lang=en&sid=1 |
| _version_ | 1828785258523262976 |
|---|---|
| author | Golnar Nourisepehr Mozhgan Emtiazjoo Mohammad Nourisepehr Emad Dehghanifard |
| author_facet | Golnar Nourisepehr Mozhgan Emtiazjoo Mohammad Nourisepehr Emad Dehghanifard |
| author_sort | Golnar Nourisepehr |
| collection | DOAJ |
| description | Background and Objective: In Iran, due to vast development of different chemical and petrochemical industries and water resource pollution to refractory organic matters, using a costeffective method for the removal of those pollutant from drinking water. The aim of this study was to evaluate the performance of magnetic-multiwalled carbon nanotube for the removal of 2,4-
dinitrophenol from aquoeous solutions and deteremining toxicity reduction of the effluent.
Methods: Adsorption experiments were conducted in a batch system. Magnetic-multiwalled carbon nanotubes were synthesized by co-precipitation method. Variables of contact time (0-90 min), pH (3,5, 7, 9, 11), pollutant concentration (10-100 mg/L) and adsorbent concentration (1-2.5 g/L) were considered. For the determination of toxicity reduction of the effluent, the Bioassay tests were applied by using Daphnia magna which toxicity of 48h and 96 h were obtained.
Results: Results were showed that the maximum removal of 92.97% in the contact time of 90 min were obtained in pH=7, pollutant concentration of 10 mg/L and adsorption concentration of 2.5 g/L. The adsorption process was in accordance with Freundlich isotherm which showed non-uniform and multi-layered adsorption on the surface of the adsorbent and heterogeneous adsorption. The results of the toxicity of 2,4-DNP, before the adsorption process, on the Daphnia magna organism showed that the lethal concentration (LC50) 48h and 96 h of the raw wastewater was 42 and 38 percent (4.2 and
3.8 mg/L), respectively.
Conclusions: The magnetic-multiwalled carbon nanotube adsorbent could be a proper choice for removal of 2,4-DNP, due to high removal efficiency, recyclability, reusability and activity in neutral pH. |
| first_indexed | 2024-12-11T23:47:44Z |
| format | Article |
| id | doaj.art-2765277fc4ce45a9b0bd618d549b6d5b |
| institution | Directory Open Access Journal |
| issn | 2383-3211 |
| language | fas |
| last_indexed | 2024-12-11T23:47:44Z |
| publishDate | 2016-09-01 |
| publisher | Alborz University of Medical Sciences |
| record_format | Article |
| series | Muhandisī-i Bihdāsht-i Muḥīṭ |
| spelling | doaj.art-2765277fc4ce45a9b0bd618d549b6d5b2022-12-22T00:45:34ZfasAlborz University of Medical SciencesMuhandisī-i Bihdāsht-i Muḥīṭ2383-32112016-09-0134337349Performance Evaluation of Magnetic-Multiwalled Carbon Nanotube in Removal of 2,4-DNP from Aqueous Solutions and Determining Toxicity ReductionGolnar Nourisepehr0Mozhgan Emtiazjoo1Mohammad Nourisepehr2Emad Dehghanifard3 Background and Objective: In Iran, due to vast development of different chemical and petrochemical industries and water resource pollution to refractory organic matters, using a costeffective method for the removal of those pollutant from drinking water. The aim of this study was to evaluate the performance of magnetic-multiwalled carbon nanotube for the removal of 2,4- dinitrophenol from aquoeous solutions and deteremining toxicity reduction of the effluent. Methods: Adsorption experiments were conducted in a batch system. Magnetic-multiwalled carbon nanotubes were synthesized by co-precipitation method. Variables of contact time (0-90 min), pH (3,5, 7, 9, 11), pollutant concentration (10-100 mg/L) and adsorbent concentration (1-2.5 g/L) were considered. For the determination of toxicity reduction of the effluent, the Bioassay tests were applied by using Daphnia magna which toxicity of 48h and 96 h were obtained. Results: Results were showed that the maximum removal of 92.97% in the contact time of 90 min were obtained in pH=7, pollutant concentration of 10 mg/L and adsorption concentration of 2.5 g/L. The adsorption process was in accordance with Freundlich isotherm which showed non-uniform and multi-layered adsorption on the surface of the adsorbent and heterogeneous adsorption. The results of the toxicity of 2,4-DNP, before the adsorption process, on the Daphnia magna organism showed that the lethal concentration (LC50) 48h and 96 h of the raw wastewater was 42 and 38 percent (4.2 and 3.8 mg/L), respectively. Conclusions: The magnetic-multiwalled carbon nanotube adsorbent could be a proper choice for removal of 2,4-DNP, due to high removal efficiency, recyclability, reusability and activity in neutral pH.http://jehe.abzums.ac.ir/browse.php?a_code=A-10-25-32&slc_lang=en&sid=1Magnetic-multiwalled carbon nanotube 24-DNP Toxicity reduction Daphnia magna |
| spellingShingle | Golnar Nourisepehr Mozhgan Emtiazjoo Mohammad Nourisepehr Emad Dehghanifard Performance Evaluation of Magnetic-Multiwalled Carbon Nanotube in Removal of 2,4-DNP from Aqueous Solutions and Determining Toxicity Reduction Muhandisī-i Bihdāsht-i Muḥīṭ Magnetic-multiwalled carbon nanotube 2 4-DNP Toxicity reduction Daphnia magna |
| title | Performance Evaluation of Magnetic-Multiwalled Carbon Nanotube in Removal of 2,4-DNP from Aqueous Solutions and Determining Toxicity Reduction |
| title_full | Performance Evaluation of Magnetic-Multiwalled Carbon Nanotube in Removal of 2,4-DNP from Aqueous Solutions and Determining Toxicity Reduction |
| title_fullStr | Performance Evaluation of Magnetic-Multiwalled Carbon Nanotube in Removal of 2,4-DNP from Aqueous Solutions and Determining Toxicity Reduction |
| title_full_unstemmed | Performance Evaluation of Magnetic-Multiwalled Carbon Nanotube in Removal of 2,4-DNP from Aqueous Solutions and Determining Toxicity Reduction |
| title_short | Performance Evaluation of Magnetic-Multiwalled Carbon Nanotube in Removal of 2,4-DNP from Aqueous Solutions and Determining Toxicity Reduction |
| title_sort | performance evaluation of magnetic multiwalled carbon nanotube in removal of 2 4 dnp from aqueous solutions and determining toxicity reduction |
| topic | Magnetic-multiwalled carbon nanotube 2 4-DNP Toxicity reduction Daphnia magna |
| url | http://jehe.abzums.ac.ir/browse.php?a_code=A-10-25-32&slc_lang=en&sid=1 |
| work_keys_str_mv | AT golnarnourisepehr performanceevaluationofmagneticmultiwalledcarbonnanotubeinremovalof24dnpfromaqueoussolutionsanddeterminingtoxicityreduction AT mozhganemtiazjoo performanceevaluationofmagneticmultiwalledcarbonnanotubeinremovalof24dnpfromaqueoussolutionsanddeterminingtoxicityreduction AT mohammadnourisepehr performanceevaluationofmagneticmultiwalledcarbonnanotubeinremovalof24dnpfromaqueoussolutionsanddeterminingtoxicityreduction AT emaddehghanifard performanceevaluationofmagneticmultiwalledcarbonnanotubeinremovalof24dnpfromaqueoussolutionsanddeterminingtoxicityreduction |