Influence of Pyrolysis Temperature on Cadmium and Zinc Sorption Capacity of Sugar Cane Straw–Derived Biochar
By L. C. A. Melo, A. Coscione, C. A. Abreu, A. P. Puga, O. A. Camargo. 2013
139 citations recorded by the source corpus.
The effect of pyrolysis temperature on the characteristics and metal sorption capacity of sugar cane straw derived–biochar (BC) was investigated. Biochar was produced at four temperatures (400, 500, 600, and 700 °C) before characterization for yield, ash and moisture content, pH, EC, pHPZC, elemental composition, nutrient content, CEC, TGA, and functional groups (FT-IR). Biochar alone and in mixtures containing 10%, w/w biochar with one of two different tropical soils (Entisol and Oxisol) was shaken for 24 h with a 2.0 mM solution (pH 4.5) of Zn or Cd in a batch sorption test. Increasing the pyrolysis temperature led to a reduction in the O/C and H/C molar ratios. The sorption capacity of biochar pyrolyzed at 700 °C was nearly four times greater than that produced at 400 °C. In the Entisol mixture, there was an increase up to seven-fold in the sorption of both Cd and Zn compared with the control (without BC). In the Oxisol mixture, there was a maximum 20% increase in sorption compared with the control. For the remediation of Cd- and Zn-contaminated substrates, the use of higher pyrolysis temperature biochars are recommended because of their higher metal sorption capacities.
Subfields: Biomaterials
View Paper: https://www.semanticscholar.org/paper/73ad0ae8da1d403e26e3f91e72ff5d607a9006a0
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Citations in the corpus
- Influence of Carbonization Temperature on Physicochemical Properties of Biochar derived from Slow Pyrolysis of Durian Wood (Durio zibethinus) Sawdust (2016, unknown): “3361 biomass undergoes dehydration and depolymerization reactions to form volatile lignin and cellulose which condensate subsequently to yield graphitic structure inside the biochar matrix (Melo et al. 2013).”
- Enhancement of maize plant growth with inoculation of phosphate-solubilizing bacteria and biochar amendment in soil (2017, methodology): “The cation exchange capacity (CEC) of biochar was measured by ammonium acetate (NH4OAC) extraction method (Song and Guo 2012; Melo et al. 2013) (Table 1).”