Abstract
In this work, granular biochar, Laminaria japonica-derived biochar (LB)-calcium alginate beads (LB-CAB), was successfully prepared by dropping a mixture of powder biochar and alginate solution into a calcium chloride solution for phosphate adsorption. Among different marine macroalgae derived biochars, LB exhibited the best performance, showing a phosphate removal rate of 97.02%, which was attributed to its high Ca/P and Mg/P ratios. With increasing pyrolysis temperature up to 600 °C, the physicochemical properties of LB became suitable for adsorbing phosphate. Experimental results of kinetics and equilibrium isotherms at different temperatures (10-30 °C) showed that the phosphate adsorption process is endothermic and is mainly controlled by external mass transfer and the intraparticle diffusion rate. The maximum adsorption capacity was found to be 157.7 mg g-1 at 30 °C, as fitted by the Langmuir-Freundlich model, which is higher than capacities of other powder form of biochars.
| Original language | English |
|---|---|
| Pages (from-to) | 108-116 |
| Number of pages | 9 |
| Journal | Bioresource technology |
| Volume | 211 |
| DOIs | |
| Publication status | Published - 2016 Jul 1 |
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All Science Journal Classification (ASJC) codes
- Bioengineering
- Environmental Engineering
- Renewable Energy, Sustainability and the Environment
- Waste Management and Disposal
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Characteristics of biochar derived from marine macroalgae and fabrication of granular biochar by entrapment in calcium-alginate beads for phosphate removal from aqueous solution. / Jung, Kyung Won; Jeong, Tae Un; Kang, Ho Jeong; Ahn, Kyu Hong.
In: Bioresource technology, Vol. 211, 01.07.2016, p. 108-116.Research output: Contribution to journal › Article
TY - JOUR
T1 - Characteristics of biochar derived from marine macroalgae and fabrication of granular biochar by entrapment in calcium-alginate beads for phosphate removal from aqueous solution
AU - Jung, Kyung Won
AU - Jeong, Tae Un
AU - Kang, Ho Jeong
AU - Ahn, Kyu Hong
PY - 2016/7/1
Y1 - 2016/7/1
N2 - In this work, granular biochar, Laminaria japonica-derived biochar (LB)-calcium alginate beads (LB-CAB), was successfully prepared by dropping a mixture of powder biochar and alginate solution into a calcium chloride solution for phosphate adsorption. Among different marine macroalgae derived biochars, LB exhibited the best performance, showing a phosphate removal rate of 97.02%, which was attributed to its high Ca/P and Mg/P ratios. With increasing pyrolysis temperature up to 600 °C, the physicochemical properties of LB became suitable for adsorbing phosphate. Experimental results of kinetics and equilibrium isotherms at different temperatures (10-30 °C) showed that the phosphate adsorption process is endothermic and is mainly controlled by external mass transfer and the intraparticle diffusion rate. The maximum adsorption capacity was found to be 157.7 mg g-1 at 30 °C, as fitted by the Langmuir-Freundlich model, which is higher than capacities of other powder form of biochars.
AB - In this work, granular biochar, Laminaria japonica-derived biochar (LB)-calcium alginate beads (LB-CAB), was successfully prepared by dropping a mixture of powder biochar and alginate solution into a calcium chloride solution for phosphate adsorption. Among different marine macroalgae derived biochars, LB exhibited the best performance, showing a phosphate removal rate of 97.02%, which was attributed to its high Ca/P and Mg/P ratios. With increasing pyrolysis temperature up to 600 °C, the physicochemical properties of LB became suitable for adsorbing phosphate. Experimental results of kinetics and equilibrium isotherms at different temperatures (10-30 °C) showed that the phosphate adsorption process is endothermic and is mainly controlled by external mass transfer and the intraparticle diffusion rate. The maximum adsorption capacity was found to be 157.7 mg g-1 at 30 °C, as fitted by the Langmuir-Freundlich model, which is higher than capacities of other powder form of biochars.
UR - http://www.scopus.com/inward/record.url?scp=84962612967&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84962612967&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2016.03.066
DO - 10.1016/j.biortech.2016.03.066
M3 - Article
C2 - 27010340
AN - SCOPUS:84962612967
VL - 211
SP - 108
EP - 116
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
ER -