Influence of pig manure biochar mineral content on Cr(III) sorption capacity
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Influence of pig manure biochar mineral content on Cr(III) sorption capacity. / Wnetrzak, Renata; Leahy, J.J.; Chojnacka, Katarzyna W.; Saeid, Agnieszka; Novotny, Etelvino; Jensen, Lars Stoumann; Kwapinski, Witold.
In: Journal of Chemical Technology and Biotechnology, Vol. 89, No. 4, 2014, p. 569-578.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Influence of pig manure biochar mineral content on Cr(III) sorption capacity
AU - Wnetrzak, Renata
AU - Leahy, J.J.
AU - Chojnacka, Katarzyna W.
AU - Saeid, Agnieszka
AU - Novotny, Etelvino
AU - Jensen, Lars Stoumann
AU - Kwapinski, Witold
PY - 2014
Y1 - 2014
N2 - BACKGROUND: The adsorption of Cr(III) ions on various pig manure biochar (BC) samples was investigated to determine the effect of operating conditions (initial pH, sorbate and sorbent concentrations) on sorptive capacity. The BC samples with higher sorption capacity showed high surface area and were rich in alkaline metals whose concentration was measured by ICP-OES. RESULTS: For BCs from anaerobically and chemically pretreated feedstock greater ΔpH changes and higher maximum capacity were noted during Cr(III) adsorption than for BC from mechanically pretreated samples, due to a higher ion exchange capacity. The maximum Cr(III) uptake of 102 mg g-1 for the BC sample was achieved at c0 = 300 mg dm-3 and pH = 5. It was also observed that the high ash content effectively lowered the surface area of BCs; however all BCs investigated contained a low level of toxic metals. CONCLUSIONS: The data indicate that both the technology used for separation of the manure and pyrolysis temperature had a significant influence on the physical and chemical properties of the BC and affected its sorption capacity. In addition, compared with other sorbents pig manure BC has one of the best Cr(III) sorption capacities.
AB - BACKGROUND: The adsorption of Cr(III) ions on various pig manure biochar (BC) samples was investigated to determine the effect of operating conditions (initial pH, sorbate and sorbent concentrations) on sorptive capacity. The BC samples with higher sorption capacity showed high surface area and were rich in alkaline metals whose concentration was measured by ICP-OES. RESULTS: For BCs from anaerobically and chemically pretreated feedstock greater ΔpH changes and higher maximum capacity were noted during Cr(III) adsorption than for BC from mechanically pretreated samples, due to a higher ion exchange capacity. The maximum Cr(III) uptake of 102 mg g-1 for the BC sample was achieved at c0 = 300 mg dm-3 and pH = 5. It was also observed that the high ash content effectively lowered the surface area of BCs; however all BCs investigated contained a low level of toxic metals. CONCLUSIONS: The data indicate that both the technology used for separation of the manure and pyrolysis temperature had a significant influence on the physical and chemical properties of the BC and affected its sorption capacity. In addition, compared with other sorbents pig manure BC has one of the best Cr(III) sorption capacities.
KW - Biochar
KW - Pig manure
KW - Pyrolysis
KW - Separation
KW - Sorption
U2 - 10.1002/jctb.4159
DO - 10.1002/jctb.4159
M3 - Journal article
AN - SCOPUS:84895870649
VL - 89
SP - 569
EP - 578
JO - Journal of Chemical Technology and Biotechnology
JF - Journal of Chemical Technology and Biotechnology
SN - 0268-2575
IS - 4
ER -
ID: 130097852