TY  - GEN
A1  - Block, Inga
A1  - Günter, Christina
A1  - Rodrigues, Alysson Duarte
A1  - Paasch, Silvia
A1  - Hesemann, Peter
A1  - Taubert, Andreas
T1  - Carbon Adsorbents from Spent Coffee for Removal of
Methylene Blue and Methyl Orange from Water
T2  - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - Activated carbons (ACs) were prepared from dried spent coffee (SCD), a biological waste product, to produce adsorbents for methylene blue (MB) and methyl orange (MO) from aqueous solution. Pre-pyrolysis activation of SCD was achieved via treatment of the SCD with aqueous sodium hydroxide solutions at 90 °C. Pyrolysis of the pretreated SCD at 500 °C for 1 h produced powders with typical characteristics of AC suitable and effective for dye adsorption. As an alternative to the rather harsh base treatment, calcium carbonate powder, a very common and abundant resource, was also studied as an activator. Mixtures of SCD and CaCO3 (1:1 w/w) yielded effective ACs for MO and MB removal upon pyrolysis needing only small amounts of AC to clear the solutions. A selectivity of the adsorption process toward anionic (MO) or cationic (MB) dyes was not observed.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1155 
KW  - water
KW  - spent coffee
KW  - dye adsorption
KW  - methylene blue
KW  - methyl orange
KW  - calcium carbonate
KW  - activated carbon
KW  - water treatment
KW  - dye removal
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-521653
SN  - 1866-8372
IS  - 14
ER  - 
TY  - JOUR
A1  - Block, Inga
A1  - Günter, Christina
A1  - Rodrigues, Alysson Duarte
A1  - Paasch, Silvia
A1  - Hesemann, Peter
A1  - Taubert, Andreas
T1  - Carbon Adsorbents from Spent Coffee for Removal of
Methylene Blue and Methyl Orange from Water
JF  - Materials
N2  - Activated carbons (ACs) were prepared from dried spent coffee (SCD), a biological waste product, to produce adsorbents for methylene blue (MB) and methyl orange (MO) from aqueous solution. Pre-pyrolysis activation of SCD was achieved via treatment of the SCD with aqueous sodium hydroxide solutions at 90 °C. Pyrolysis of the pretreated SCD at 500 °C for 1 h produced powders with typical characteristics of AC suitable and effective for dye adsorption. As an alternative to the rather harsh base treatment, calcium carbonate powder, a very common and abundant resource, was also studied as an activator. Mixtures of SCD and CaCO3 (1:1 w/w) yielded effective ACs for MO and MB removal upon pyrolysis needing only small amounts of AC to clear the solutions. A selectivity of the adsorption process toward anionic (MO) or cationic (MB) dyes was not observed.
KW  - water
KW  - spent coffee
KW  - dye adsorption
KW  - methylene blue
KW  - methyl orange
KW  - calcium carbonate
KW  - activated carbon
KW  - water treatment
KW  - dye removal
Y1  - 2021
U6  - https://doi.org/10.3390/ma14143996
SN  - 1996-1944
VL  - 14
IS  - 14
PB  - MDPI
CY  - Basel
ER  -