Assessment of Pistachio Shell Biochar Quality and Its Potential for Adsorption of Heavy Metals

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• 作者：Kostas Komnitsas ; Dimitra Zaharaki ; Ioannis Pyliotis…
• 关键词：Biochar ; Pistachio ; Pyrolysis ; Adsorption ; Heavy metals
• 刊名：Waste and Biomass Valorization
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：6
• 期：5
• 页码：805-816
• 全文大小：2,185 KB
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  7.Kinney, T.J., Masiello, C.A., Dugan, B., Hockaday, W.C., Dean, M.R., Zygourakis, K., Barnes, R.T.: Hydrologic properties of biochars produced at different temperatures. Biomass Bioenergy 41, 34-3 (2012)CrossRef
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  24.Dai, Z., Meng, J., Muhammad, N., Liu, X., Wang, H., He, Y., Brookes, P.C., Xu, J.: The potential feasibility for soil improvement, based on the properties of biochars pyrolyzed from different feedstocks. J. Soils Sediments 13, 989-000 (2013)CrossRef
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• 作者单位：Kostas Komnitsas (1)
  Dimitra Zaharaki (1)
  Ioannis Pyliotis (1)
  Despina Vamvuka (1)
  Georgios Bartzas (2)
  
  1. School of Mineral Resources Engineering, Technical University Crete, 73100, Chania, Crete, Greece
  2. School of Mining and Metallurgical Engineering, National Technical University of Athens, Zografos Campus, 15780, Athens, Greece
  
• 刊物类别：Engineering
• 刊物主题：Engineering, general
  Environment
  Waste Management and Waste Technology
  Industrial Pollution Prevention
  Renewable and Green Energy
  Environmental Engineering
  
• 出版者：Springer Netherlands
• ISSN：1877-265X

文摘

In the present study pistachio shells obtained from Aegina island, Greece, were subjected to slow pyrolysis for the production of biochar. Pyrolysis was carried out over a temperature range of 250-50 °C for 1 h using a heating rate of 10 °C min? and the quality of the produced biochar was assessed by evaluating its main properties, namely pyrolysis yield, pH, volatile matter, char, fixed carbon, ash and C, H, S, N content. Thermogravimetric analysis, X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy were used for the identification of the morphology and structure of the produced biochar. Finally, the potential of biochar to remove heavy metals, namely Pb and Cu, from synthetic solutions was investigated. A kinetic study indicated that sorption can be very well described by the pseudo-second order kinetic model, while simulation of the sorption isotherms provided better fit for the Freundlich model. The experimental data show that Pb is adsorbed more efficiently compared to Cu in all biochars, while the highest % adsorption for both heavy metals, almost 100 %, is shown for 10 g L? biochar produced after pyrolysis at 550 °C when the initial Pb and Cu concentration in solution was 15 mg L?. Keywords Biochar Pistachio Pyrolysis Adsorption Heavy metals