Extraction of inorganic materials from fresh and dried alga Saccharina japonica. Issue 5 (October 2017)

• Record Type: Journal Article
• Authors: Boakye, Patrick; Sewu, Divine D.; Woo, Hee Chul; Choi, Jae Hyung; Lee, Chul Woo; Woo, Seung Han
• Is Part Of: Journal of environmental chemical engineering. Volume 5:Issue 5(2017)
• Page Start: 4454
• Page End: 4461
• Publication Date: 2017-10
• Subjects: DWFS dry weight of feedstock before extraction -- DWE dry weight of extract after extraction -- Etot extraction efficiency for total mass of extract from feedstock -- Einorg extraction efficiency for inorganic materials represented by the mass of ash in the feedstock -- Eorg extraction efficiency for organic materials represented by the mass of organics in the feedstock -- finorg, FS fraction of ash in feedstock -- forg, FS fraction of organics in feedstock -- finorg, E fraction of inorganics in extract after extraction -- forg, E fraction of organics in extract after extraction -- finorg, R fraction of inorganics in residue after extraction -- forg, R fraction of organics in residue after extraction -- fE mass fraction of extract after extraction -- fR mass fraction of residue after extraction -- rE ratio of Einorg to Eorg; Biomass -- Biorefinery -- Extraction -- Inorganics -- Macroalgae -- Minerals; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2017.08.030
• Languages: English
• ISSNs: 2213-2929

Abstract

Abstract: Extraction of minerals from fresh and dried macroalgae kelp ( Saccharina japonica ) was investigated to get better biomass resource for biorefinery. At a solid to liquid ratio of 1:6 (w/v), 2 h extraction, and 30 °C, inorganic extraction efficiency ( Einorg ) and total efficiency ( Etot ) using water were respectively 76.88 and 50.82% for fresh biomass while those of dried biomass were 72.99 and 65.79%. For fresh biomass extraction using ethanol, Einorg (74.19%) and Etot (42.21%) were much higher than for dried biomass with 7.29% Einorg and 1.21% Etot . With 10% ethanol, Einorg were similar for both materials, however, higher ratio of inorganic to organic extraction efficiency ( rE ) (5.48) were obtained for fresh biomass compared to lower rE (2.02) for dried biomass. The rE for fresh biomass was higher (13.80) than that for dried biomass (1.32) using water at 1:4 solid to liquid ratio, suggesting that fresh kelp is better feedstock for bioenergy production.