Cryogel-supported titanate nanotubes for waste treatment: Impact on methane production and bio-fertilizer quality.
(2015) In Journal of Biotechnology 207. p.58-66- Abstract
- By reducing the cadmium (Cd(2+)) content in biomass used for bio-based products such as biogas, a less toxic bio-based fertilizer can be obtained. In this work, we demonstrate how a macroporous polymer can support titanate nanotubes, and we take advantage of its known selective adsorption behavior towards Cd(2+) in an adsorption process from real nutrient-rich process water from hydrolysis of seaweed, a pollutant-rich biomass. We show that pretreatment steps involving alteration in area-to-volume ratio performed in aerated and acidic conditions release the most Cd(2+) from the solid material. By integrating an adsorption step between hydrolysis and the biomethane, we show that it was possible to obtain high Cd(2+) removal (ca. 94%) despite... (More)
- By reducing the cadmium (Cd(2+)) content in biomass used for bio-based products such as biogas, a less toxic bio-based fertilizer can be obtained. In this work, we demonstrate how a macroporous polymer can support titanate nanotubes, and we take advantage of its known selective adsorption behavior towards Cd(2+) in an adsorption process from real nutrient-rich process water from hydrolysis of seaweed, a pollutant-rich biomass. We show that pretreatment steps involving alteration in area-to-volume ratio performed in aerated and acidic conditions release the most Cd(2+) from the solid material. By integrating an adsorption step between hydrolysis and the biomethane, we show that it was possible to obtain high Cd(2+) removal (ca. 94%) despite molar excess (between 100 and 500) of co-present ions (e.g., Mg(2+), Ca(2+), Na(+), K(+)) and with maintained total phosphorous content. The bio-methane potential did not significantly decrease as compared to a process without cadmium removal and the yielded bio-fertilizer followed Swedish guideline values. This study provides a sound and promising alternative for a novel remediation step, enabling higher use of otherwise tricky and to some extent overlooked biomass sources. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5442121
- author
- Önnby, Linda LU ; Kirsebom, Harald LU and Ivo Achu, Nges LU
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Biotechnology
- volume
- 207
- pages
- 58 - 66
- publisher
- Elsevier
- external identifiers
-
- pmid:26015262
- wos:000356450400012
- scopus:84930644042
- pmid:26015262
- ISSN
- 1873-4863
- DOI
- 10.1016/j.jbiotec.2015.05.014
- language
- English
- LU publication?
- yes
- id
- 89cd1565-5df6-46f9-ad80-de9b52bc1f3e (old id 5442121)
- date added to LUP
- 2016-04-01 10:21:27
- date last changed
- 2022-03-12 05:01:10
@article{89cd1565-5df6-46f9-ad80-de9b52bc1f3e,
abstract = {{By reducing the cadmium (Cd(2+)) content in biomass used for bio-based products such as biogas, a less toxic bio-based fertilizer can be obtained. In this work, we demonstrate how a macroporous polymer can support titanate nanotubes, and we take advantage of its known selective adsorption behavior towards Cd(2+) in an adsorption process from real nutrient-rich process water from hydrolysis of seaweed, a pollutant-rich biomass. We show that pretreatment steps involving alteration in area-to-volume ratio performed in aerated and acidic conditions release the most Cd(2+) from the solid material. By integrating an adsorption step between hydrolysis and the biomethane, we show that it was possible to obtain high Cd(2+) removal (ca. 94%) despite molar excess (between 100 and 500) of co-present ions (e.g., Mg(2+), Ca(2+), Na(+), K(+)) and with maintained total phosphorous content. The bio-methane potential did not significantly decrease as compared to a process without cadmium removal and the yielded bio-fertilizer followed Swedish guideline values. This study provides a sound and promising alternative for a novel remediation step, enabling higher use of otherwise tricky and to some extent overlooked biomass sources.}},
author = {{Önnby, Linda and Kirsebom, Harald and Ivo Achu, Nges}},
issn = {{1873-4863}},
language = {{eng}},
pages = {{58--66}},
publisher = {{Elsevier}},
series = {{Journal of Biotechnology}},
title = {{Cryogel-supported titanate nanotubes for waste treatment: Impact on methane production and bio-fertilizer quality.}},
url = {{http://dx.doi.org/10.1016/j.jbiotec.2015.05.014}},
doi = {{10.1016/j.jbiotec.2015.05.014}},
volume = {{207}},
year = {{2015}},
}