Recovery of nutrients from biogas digestate with biochar and clinoptilolite

N.P. Kocaturk

Research output: Thesisinternal PhD, WUAcademic

Abstract

The liquid fraction of digestate contains nutrients which makes it a valuable fertiliser in agricultural crop production systems. However, direct application of digestate may raise practical and environmental problems. Therefore, processes to concentrate nutrients have been proposed aiming not only to treat the liquid fraction of digestate to overcome the problems related to direct application, but also to recover the nutrients of which natural reserves are being depleted such as phosphorus and potassium.

In this thesis, the focus was on the evaluation of the use of clinoptilolite and biochar for nutrient recovery from the liquid fraction of digestate; and to investigate the further use of these nutrient-enriched materials as fertiliser.

This thesis showed that sorption with clinoptilolite and biochar can be a promising technology to recover nutrients from liquid fraction of digestate. Using biochar and clinoptilolite provides concentration of nutrients and, thereby, volume reduction which allows for savings on storage, transport and application of the voluminous liquid fraction of digestate. The end-products are digestate-enriched clinoptilolite and enriched biochar can act as N fertilisers.

LanguageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • Wageningen University
Supervisors/Advisors
  • Stoumann Jensen, L., Promotor, External person
  • Brussaard, Lijbert, Promotor
  • Bruun, S., Co-promotor, External person
  • Zwart, Kor, Co-promotor
Award date24 Jun 2016
Place of PublicationWageningen
Publisher
Print ISBNs9789462578234
DOIs
Publication statusPublished - 2016

Fingerprint

clinoptilolite
biogas
nutrient
liquid
fertilizer
crop production
production system
savings
potassium
sorption
phosphorus

Keywords

  • biochar
  • clinoptilolite
  • digestate
  • nutrients
  • waste management
  • fractionation
  • growth

Cite this

Kocaturk, N.P.. / Recovery of nutrients from biogas digestate with biochar and clinoptilolite. Wageningen : Wageningen University, 2016. 130 p.
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abstract = "The liquid fraction of digestate contains nutrients which makes it a valuable fertiliser in agricultural crop production systems. However, direct application of digestate may raise practical and environmental problems. Therefore, processes to concentrate nutrients have been proposed aiming not only to treat the liquid fraction of digestate to overcome the problems related to direct application, but also to recover the nutrients of which natural reserves are being depleted such as phosphorus and potassium. In this thesis, the focus was on the evaluation of the use of clinoptilolite and biochar for nutrient recovery from the liquid fraction of digestate; and to investigate the further use of these nutrient-enriched materials as fertiliser. This thesis showed that sorption with clinoptilolite and biochar can be a promising technology to recover nutrients from liquid fraction of digestate. Using biochar and clinoptilolite provides concentration of nutrients and, thereby, volume reduction which allows for savings on storage, transport and application of the voluminous liquid fraction of digestate. The end-products are digestate-enriched clinoptilolite and enriched biochar can act as N fertilisers.",
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note = "WU thesis 6400",
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Kocaturk, NP 2016, 'Recovery of nutrients from biogas digestate with biochar and clinoptilolite', Doctor of Philosophy, Wageningen University, Wageningen. https://doi.org/10.18174/382569

Recovery of nutrients from biogas digestate with biochar and clinoptilolite. / Kocaturk, N.P.

Wageningen : Wageningen University, 2016. 130 p.

Research output: Thesisinternal PhD, WUAcademic

TY - THES

T1 - Recovery of nutrients from biogas digestate with biochar and clinoptilolite

AU - Kocaturk, N.P.

N1 - WU thesis 6400

PY - 2016

Y1 - 2016

N2 - The liquid fraction of digestate contains nutrients which makes it a valuable fertiliser in agricultural crop production systems. However, direct application of digestate may raise practical and environmental problems. Therefore, processes to concentrate nutrients have been proposed aiming not only to treat the liquid fraction of digestate to overcome the problems related to direct application, but also to recover the nutrients of which natural reserves are being depleted such as phosphorus and potassium. In this thesis, the focus was on the evaluation of the use of clinoptilolite and biochar for nutrient recovery from the liquid fraction of digestate; and to investigate the further use of these nutrient-enriched materials as fertiliser. This thesis showed that sorption with clinoptilolite and biochar can be a promising technology to recover nutrients from liquid fraction of digestate. Using biochar and clinoptilolite provides concentration of nutrients and, thereby, volume reduction which allows for savings on storage, transport and application of the voluminous liquid fraction of digestate. The end-products are digestate-enriched clinoptilolite and enriched biochar can act as N fertilisers.

AB - The liquid fraction of digestate contains nutrients which makes it a valuable fertiliser in agricultural crop production systems. However, direct application of digestate may raise practical and environmental problems. Therefore, processes to concentrate nutrients have been proposed aiming not only to treat the liquid fraction of digestate to overcome the problems related to direct application, but also to recover the nutrients of which natural reserves are being depleted such as phosphorus and potassium. In this thesis, the focus was on the evaluation of the use of clinoptilolite and biochar for nutrient recovery from the liquid fraction of digestate; and to investigate the further use of these nutrient-enriched materials as fertiliser. This thesis showed that sorption with clinoptilolite and biochar can be a promising technology to recover nutrients from liquid fraction of digestate. Using biochar and clinoptilolite provides concentration of nutrients and, thereby, volume reduction which allows for savings on storage, transport and application of the voluminous liquid fraction of digestate. The end-products are digestate-enriched clinoptilolite and enriched biochar can act as N fertilisers.

KW - biochar

KW - clinoptilolite

KW - digestate

KW - nutrients

KW - waste management

KW - fractionation

KW - growth

KW - biochar

KW - clinoptiloliet

KW - digestaat

KW - voedingsstoffen

KW - afvalbeheer

KW - fractionering

KW - groei

U2 - 10.18174/382569

DO - 10.18174/382569

M3 - internal PhD, WU

SN - 9789462578234

PB - Wageningen University

CY - Wageningen

ER -