Open AccessBiogenic calcite particles from microalgae—Coccoliths as a potential raw material
Author(s) -
Jakob Ioanna,
Chairopoulou Makrina Artemis,
Vučak Marijan,
Posten Clemens,
Teipel Ulrich
Publication year - 2017
Publication title -
engineering in life sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.547
H-Index - 57
eISSN - 1618-2863
pISSN - 1618-0240
DOI - 10.1002/elsc.201600183
Subject(s) - calcite , calcium carbonate , coccolith , particle (ecology) , emiliania huxleyi , biomineralization , mineralogy , carbonate , chemical engineering , precipitation , mineral , materials science , porosity , particle size , geology , chemistry , metallurgy , composite material , physics , oceanography , phytoplankton , organic chemistry , engineering , nutrient , meteorology
Synthetic calcite (CaCO 3 ) particles are found in a broad range of applications. The geometry of particles produced from limestone or precipitation are versatile but limited to basic shapes. The microalga Emiliania huxleyi produces micro‐structured calcite platelets, called coccoliths. This article presents the results of an application‐orientated study, which includes characteristic values also used in the calcite industry for particle evaluation. It is demonstrated that coccoliths are significantly different from all industrial particles produced so far. Coccoliths are porous particles, mainly consisted of calcium carbonate, with further elements such as Mg, Si, Sr, and Fe often embedded in their structure. Their structure is extremely sophisticated, while the overall particle morphology and particle size distribution are homogeneous. This study gives a first inside into the potential of these exceptional objects and may set further impulses for their utilization in specific calcite particle applications.