Sökning: WFRF:(Björnsson Lovisa)
> (2005-2009)
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Two-stage anaerobic...
Two-stage anaerobic digestion enables heavy metal removal.
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Selling, Robert (författare)
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- Håkansson, Torbjörn (författare)
- Lund University,Lunds universitet,Bioteknik,Centrum för tillämpade biovetenskaper,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Biotechnology,Center for Applied Life Sciences,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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- Björnsson, Lovisa (författare)
- Lund University,Lunds universitet,Miljö- och energisystem,Institutionen för teknik och samhälle,Institutioner vid LTH,Lunds Tekniska Högskola,Environmental and Energy Systems Studies,Department of Technology and Society,Departments at LTH,Faculty of Engineering, LTH
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(creator_code:org_t)
- IWA Publishing, 2008
- 2008
- Engelska.
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Ingår i: Water Science and Technology. - : IWA Publishing. - 0273-1223 .- 1996-9732. ; 57:4, s. 553-558
- Relaterad länk:
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http://dx.doi.org/10...
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visa fler...
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https://lup.lub.lu.s...
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https://doi.org/10.2...
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Abstract
Ämnesord
Stäng
- To fully exploit the environmental benefits of the biogas process, the digestate should be recycled as biofertiliser to agriculture. This practice can however be jeopardized by the presence of unwanted compounds such as heavy metals in the digestate. By using two-stage digestion, where the first stage includes hydrolysis/acidification and liquefaction of the substrate, heavy metals can be transferred to the leachate. From the leachate, metals can then be removed by adsorption. In this study, up to 70% of the Ni, 40% of the Zn and 25% of the Cd present in maize was removed when the leachate from hydrolysis was circulated over a macroporous polyacrylamide column for 6 days. For Cu and Pb, the mobilization in the hydrolytic stage was lower which resulted in a low removal. A more efficient two-stage process with improved substrate hydrolysis would give lower pH and/or longer periods with low pH in the hydrolytic stage. This is likely to increase metal mobilisation, and would open up for an excellent opportunity of heavy metal removal.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology (hsv//eng)
Nyckelord
- iminodiacetate
- cryogel
- anaerobic digestion
- metal chelate
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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