Characteristics of biochar derived from marine macroalgae and fabrication of granular biochar by entrapment in calcium-alginate beads for phosphate removal from aqueous solution

Kyung Won Jung; Tae Un Jeong; Ho Jeong Kang; Kyu Hong Ahn

doi:10.1016/j.biortech.2016.03.066

Characteristics of biochar derived from marine macroalgae and fabrication of granular biochar by entrapment in calcium-alginate beads for phosphate removal from aqueous solution

Kyung Won Jung, Tae Un Jeong, Ho Jeong Kang, Kyu Hong Ahn

Department of Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

72 Citations (Scopus)

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	https://doi.org/10.1016/j.biortech.2016.03.066
Publication status	Published - 2016 Jul 1

Bibliographical note

Funding Information:
This work was supported by Grants from the National Research Council of Science and Technology (Project No. Asia-02-002).

All Science Journal Classification (ASJC) codes

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

Access to Document

10.1016/j.biortech.2016.03.066

Fingerprint Dive into the research topics of 'Characteristics of biochar derived from marine macroalgae and fabrication of granular biochar by entrapment in calcium-alginate beads for phosphate removal from aqueous solution'. Together they form a unique fingerprint.

Cite this

@article{f3ea49459f3342f69662397b58cefad2,

title = "Characteristics of biochar derived from marine macroalgae and fabrication of granular biochar by entrapment in calcium-alginate beads for phosphate removal from aqueous solution",

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.",

author = "Jung, {Kyung Won} and Jeong, {Tae Un} and Kang, {Ho Jeong} and Ahn, {Kyu Hong}",

note = "Funding Information: This work was supported by Grants from the National Research Council of Science and Technology (Project No. Asia-02-002). ",

year = "2016",

month = jul,

day = "1",

doi = "10.1016/j.biortech.2016.03.066",

language = "English",

volume = "211",

pages = "108--116",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Limited",

}

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 › peer-review

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

N1 - Funding Information: This work was supported by Grants from the National Research Council of Science and Technology (Project No. Asia-02-002).

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 -