Highly efficient adsorption of dyes by biochar derived from pigments-extracted macroalgae pyrolyzed at different temperature

•Macroalgae residue is promising raw material for producing biochar.•Biochar derived from pigments-extracted macroalgae is a promising adsorbent.•The malachite green adsorption capacity of MDBC800 is 5306.2 mg/g. Biochar is known to efficiently adsorb dyes from wastewater. In this study, biochar was...

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Vydané v:Bioresource technology Ročník 259; s. 104 - 110
Hlavní autori: Chen, Yi-di, Lin, Yen-Chang, Ho, Shih-Hsin, Zhou, Yan, Ren, Nan-qi
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: England Elsevier Ltd 01.07.2018
Predmet:
adsorbents
adsorption
Biochar
Dyes removal
environmental protection
gentian violet
macroalgae
Macroalgae residue
malachite green
microalgae
pyrolysis
temperature
thermal stability
wastewater
Biochar
Dyes removal
Macroalgae residue
ISSN:0960-8524, 1873-2976, 1873-2976
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Shrnutí:•Macroalgae residue is promising raw material for producing biochar.•Biochar derived from pigments-extracted macroalgae is a promising adsorbent.•The malachite green adsorption capacity of MDBC800 is 5306.2 mg/g. Biochar is known to efficiently adsorb dyes from wastewater. In this study, biochar was derived from macroalgae residue by pyrolysis, and the influence of varying temperature (from 400 °C to 800 °C) on biochar characteristics was investigated. Among the biochar samples tested, macroalgae-derived biochar possessing highly porous structure, special surface chemical behavior and high thermal stability was found to be efficient in removing malachite green, crystal violet and Congo red. The biochar derived by pyrolysis at 800 °C showed the highest adsorption capacity for malachite green (5306.2 mg g−1). In this study, the transformation of microalgae residue into a highly efficient dye adsorbent is a promising procedure for economic and environmental protection.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0960-8524
1873-2976
1873-2976
DOI:10.1016/j.biortech.2018.02.094