Conversion of seaweed waste to biochar for the removal of heavy metal ions from aqueous solution: A sustainable method to address eutrophication problem in water bodies
The present study investigated the sustainable approach for wastewater treatment using waste algal blooms. The current study investigated the removal of toxic metals namely chromium (Cr), nickel (Ni), and zinc (Zn) from aqueous solutions in batch and column studies using biochar produced by the mari...
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2025
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| author | Ravindiran G. Rajamanickam S. Ramalingam M. Hayder G. Sathaiah B.K. Gaddam M.K.R. Muniasamy S.K. Arunkumar P. |
| author2 | 57226345669 |
| author_facet | 57226345669 Ravindiran G. Rajamanickam S. Ramalingam M. Hayder G. Sathaiah B.K. Gaddam M.K.R. Muniasamy S.K. Arunkumar P. |
| author_sort | Ravindiran G. |
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| content_provider | Universiti Tenaga Nasional |
| content_source | UNITEN Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | The present study investigated the sustainable approach for wastewater treatment using waste algal blooms. The current study investigated the removal of toxic metals namely chromium (Cr), nickel (Ni), and zinc (Zn) from aqueous solutions in batch and column studies using biochar produced by the marine algae Ulva reticulata. SEM/EDX, FTIR, and XRD were used to examine the adsorbents' properties and stability. The removal efficiency of toxic metals in batch operations was investigated by varying the parameters, which included pH, biochar dose, initial metal ion concentration, and contact time. Similarly, in the column study, the removal efficiency of heavy metal ions was investigated by varying bed height, flow rate, and initial metal ion concentration. Response Surface Methodology (Central Composite Design (CCD)) was used to confirm the linearity between the observed and estimated values of the adsorption quantity. The packed bed column demonstrated successful removal rates of 90.38% for Cr, 91.23% for Ni, and 89.92% for Zn heavy metals from aqueous solutions, under a controlled environment. The breakthrough analysis also shows that the Thomas and Adams-Bohart models best fit the regression values, allowing prior breakthroughs in the packed bed column to be predicted. Desorption studies were conducted to understand sorption and elution during different regeneration cycles. Adding 0.3 N sulfuric acid over 40 min resulted in the highest desorption rate of the column and adsorbent used for all three metal ions. ? 2023 Elsevier Inc. |
| format | Article |
| id | my.uniten.dspace-36842 |
| institution | Universiti Tenaga Nasional |
| publishDate | 2025 |
| publisher | Academic Press Inc. |
| record_format | dspace |
| spelling | my.uniten.dspace-368422025-03-03T15:45:06Z Conversion of seaweed waste to biochar for the removal of heavy metal ions from aqueous solution: A sustainable method to address eutrophication problem in water bodies Ravindiran G. Rajamanickam S. Ramalingam M. Hayder G. Sathaiah B.K. Gaddam M.K.R. Muniasamy S.K. Arunkumar P. 57226345669 57190127095 57218113997 56239664100 57147186000 58629925000 57214630614 57521109800 Adsorption Chromium Hydrogen-Ion Concentration Ions Kinetics Metals, Heavy Nickel Seaweed Water Water Pollutants, Chemical Zinc Adsorption Algae Chemicals removal (water treatment) Desorption Efficiency Eutrophication Metal ions Packed beds Wastewater treatment adsorbent charcoal chromium heavy metal nickel water zinc charcoal chromium heavy metal ion water zinc Algal biochar Biochar Clean water and sanitation Clean waters Column study Kinetic study Metal ion concentration Packed bed column Removal efficiencies Toxic metals adsorption aqueous solution biochar desorption heavy metal pollutant removal reaction kinetics sanitation adsorption algal bloom aqueous solution Article central composite design contact time controlled study crystal structure desorption elution energy dispersive X ray spectroscopy eutrophication flow rate Fourier transform infrared spectroscopy heavy metal removal hydrogen bond marine alga nonhuman nutrient content pH response surface method sanitation scanning electron microscopy seaweed surface area surface property waste water management water treatment X ray diffraction kinetics water pollutant Heavy metals The present study investigated the sustainable approach for wastewater treatment using waste algal blooms. The current study investigated the removal of toxic metals namely chromium (Cr), nickel (Ni), and zinc (Zn) from aqueous solutions in batch and column studies using biochar produced by the marine algae Ulva reticulata. SEM/EDX, FTIR, and XRD were used to examine the adsorbents' properties and stability. The removal efficiency of toxic metals in batch operations was investigated by varying the parameters, which included pH, biochar dose, initial metal ion concentration, and contact time. Similarly, in the column study, the removal efficiency of heavy metal ions was investigated by varying bed height, flow rate, and initial metal ion concentration. Response Surface Methodology (Central Composite Design (CCD)) was used to confirm the linearity between the observed and estimated values of the adsorption quantity. The packed bed column demonstrated successful removal rates of 90.38% for Cr, 91.23% for Ni, and 89.92% for Zn heavy metals from aqueous solutions, under a controlled environment. The breakthrough analysis also shows that the Thomas and Adams-Bohart models best fit the regression values, allowing prior breakthroughs in the packed bed column to be predicted. Desorption studies were conducted to understand sorption and elution during different regeneration cycles. Adding 0.3 N sulfuric acid over 40 min resulted in the highest desorption rate of the column and adsorbent used for all three metal ions. ? 2023 Elsevier Inc. Final 2025-03-03T07:45:06Z 2025-03-03T07:45:06Z 2024 Article 10.1016/j.envres.2023.117551 2-s2.0-85176411937 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85176411937&doi=10.1016%2fj.envres.2023.117551&partnerID=40&md5=b303c8dfad888c6984b6304936f8bd3c https://irepository.uniten.edu.my/handle/123456789/36842 241 117551 Academic Press Inc. Scopus |
| spellingShingle | Adsorption Chromium Hydrogen-Ion Concentration Ions Kinetics Metals, Heavy Nickel Seaweed Water Water Pollutants, Chemical Zinc Adsorption Algae Chemicals removal (water treatment) Desorption Efficiency Eutrophication Metal ions Packed beds Wastewater treatment adsorbent charcoal chromium heavy metal nickel water zinc charcoal chromium heavy metal ion water zinc Algal biochar Biochar Clean water and sanitation Clean waters Column study Kinetic study Metal ion concentration Packed bed column Removal efficiencies Toxic metals adsorption aqueous solution biochar desorption heavy metal pollutant removal reaction kinetics sanitation adsorption algal bloom aqueous solution Article central composite design contact time controlled study crystal structure desorption elution energy dispersive X ray spectroscopy eutrophication flow rate Fourier transform infrared spectroscopy heavy metal removal hydrogen bond marine alga nonhuman nutrient content pH response surface method sanitation scanning electron microscopy seaweed surface area surface property waste water management water treatment X ray diffraction kinetics water pollutant Heavy metals Ravindiran G. Rajamanickam S. Ramalingam M. Hayder G. Sathaiah B.K. Gaddam M.K.R. Muniasamy S.K. Arunkumar P. Conversion of seaweed waste to biochar for the removal of heavy metal ions from aqueous solution: A sustainable method to address eutrophication problem in water bodies |
| title | Conversion of seaweed waste to biochar for the removal of heavy metal ions from aqueous solution: A sustainable method to address eutrophication problem in water bodies |
| title_full | Conversion of seaweed waste to biochar for the removal of heavy metal ions from aqueous solution: A sustainable method to address eutrophication problem in water bodies |
| title_fullStr | Conversion of seaweed waste to biochar for the removal of heavy metal ions from aqueous solution: A sustainable method to address eutrophication problem in water bodies |
| title_full_unstemmed | Conversion of seaweed waste to biochar for the removal of heavy metal ions from aqueous solution: A sustainable method to address eutrophication problem in water bodies |
| title_short | Conversion of seaweed waste to biochar for the removal of heavy metal ions from aqueous solution: A sustainable method to address eutrophication problem in water bodies |
| title_sort | conversion of seaweed waste to biochar for the removal of heavy metal ions from aqueous solution: a sustainable method to address eutrophication problem in water bodies |
| topic | Adsorption Chromium Hydrogen-Ion Concentration Ions Kinetics Metals, Heavy Nickel Seaweed Water Water Pollutants, Chemical Zinc Adsorption Algae Chemicals removal (water treatment) Desorption Efficiency Eutrophication Metal ions Packed beds Wastewater treatment adsorbent charcoal chromium heavy metal nickel water zinc charcoal chromium heavy metal ion water zinc Algal biochar Biochar Clean water and sanitation Clean waters Column study Kinetic study Metal ion concentration Packed bed column Removal efficiencies Toxic metals adsorption aqueous solution biochar desorption heavy metal pollutant removal reaction kinetics sanitation adsorption algal bloom aqueous solution Article central composite design contact time controlled study crystal structure desorption elution energy dispersive X ray spectroscopy eutrophication flow rate Fourier transform infrared spectroscopy heavy metal removal hydrogen bond marine alga nonhuman nutrient content pH response surface method sanitation scanning electron microscopy seaweed surface area surface property waste water management water treatment X ray diffraction kinetics water pollutant Heavy metals |
| url_provider | http://dspace.uniten.edu.my/ |