Magnesium-Palm Kernel Shell Biochar Composite for Effective Methylene Blue Removal: Optimization via Response Surface Methodology
TL;DR: In this article, the properties and potential application of Mg-PKS biochar composite for methylene blue solution (MB) adsorption were investigated via central composite design, response surface methodology.
Abstract: This study investigates the properties and potential application of Mg-PKS biochar composite for methylene blue solution (MB) adsorption. The Mg-PKS biochar composite was developed from palm kernel shell biochar via steam activation followed by MgSO4 treatment and carbonization. The effect of process parameters such as solution pH (4-10), contact time (30-90 min) and adsorbent dosage (0.1-0.5 g) were investigated via central composite design, response surface methodology. Results revealed that the Mg-PKS biochar composite has irregular shapes pore structure from SEM analysis, a surface area of 674 m2g-1 and average pore diameters of 7.2195 μm based on BET analysis. RSM results showed that the optimum adsorption of MB onto Mg-biochar composite was at pH 10, 30 min contact time and 0.5 g/100 mL dosage with a removal efficiency of 98.50%. In conclusion, Mg treatment is a potential alternative to other expensive chemical treatment methods for biochar upgrading to the adsorbent.
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TL;DR: In this paper , the structure and the morphology of biomass-based activated carbons were studied in detail using Brunauer-Emmett-Teller-Barrett-Joyner-Halenda (BET-BJH), X-ray Diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy/Energy-Dispersive Xray Spectrograph (SEM/EDX) techniques.
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TL;DR: In this paper , sago bark waste was microwave pyrolyzed at 400 °C to produce Sago bark microwave biochar (M−B), which was then treated with NaOH and HCl to generate acid-base modified sago-barman microwaved biochar, which showed higher removal at low initial heavy metal concentrations in batch experiments.
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TL;DR: An overview of biochar production technologies, biochar properties, and recent advances in the removal of heavy metals, organic pollutants and other inorganic pollutants using biochar is provided.
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TL;DR: In this paper, the effect of pyrolysis process parameters on the production of biochar through biochar of biomass is discussed and a comparison between the existing techniques is established in the present work.
Abstract: Biomass is considered to have potential to be used as an alternative energy source. High carbon content present in biomass converts it into high energy biochar on thermochemical treatment. Among few well established thermochemical technologies for the treatment of biomass and biogenic waste to produce high energy char along with oil and gaseous yield, pyrolysis is the most studied and discussed technique in the recent past. A comparison between the existing techniques is established in the present work. Production of char from the biomass and biogenic wastes is reviewed and it was found that yield of the biochar depends upon the biomass composition like moisture content and presence of cellulose or lignin. Pyrolysis product distribution and their quality strongly depend upon the process parameters. Different biomasses which can be used as raw material in pyrolysis are also reviewed and categorized depending upon their source. Pyrolysis process parameters such as temperature, heating rate, residence time etc. also influence the biochar yield. This study discusses the effect of these process parameters on the production of biochar through pyrolysis of biomass.
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TL;DR: Modification to produce engineered/designer biochar is likely to enhance the sorption capacity of biochar and its potential applications for environmental remediation.
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TL;DR: In this paper, activated carbon was developed from Ficus carica bast (FCBAC), and experiments were carried out to explore methylene blue (MB) uptake by FCBAC.
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