The effect of sewage sludge biochar on peat-based growing media

Méndez, Ana and Cárdenas Aguiar, Eliana Marcela and Paz Ferreiro, Jorge and Plaza, César and Gasco Guerrero, Gabriel (2017). The effect of sewage sludge biochar on peat-based growing media. "Biological Agriculture & Horticulture", v. 33 (n. 1); pp. 40-51. ISSN 0144-8765. https://doi.org/10.1080/01448765.2016.1185645.

Description

Title: The effect of sewage sludge biochar on peat-based growing media
Author/s:
  • Méndez, Ana
  • Cárdenas Aguiar, Eliana Marcela
  • Paz Ferreiro, Jorge
  • Plaza, César
  • Gasco Guerrero, Gabriel
Item Type: Article
Título de Revista/Publicación: Biological Agriculture & Horticulture
Date: 2017
ISSN: 0144-8765
Volume: 33
Subjects:
Freetext Keywords: Biochar; growing media; Lactuca sativa; sewage sludge
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Peat is the main component of growing media in horticulture. Increasing demand, environmental concerns and rising costs for peat make the search for alternative materials imperative. Much research has been performed aiming to find high quality and low cost substrates from different organic wastes such as compost and thus decrease peat consumption. Biochar is a carbon-rich material that has attracted important research as a soil amendment. However, its potential utilization as a peat substitute for growing media formulation remains less well explored. The aim of this study was to evaluate the effects of sewage sludge and sewage sludge biochar on peat properties as growing media and on lettuce (Lactuca sativa) growth. Sewage sludge transformation into biochar proved to be a sustainable waste management approach in order to promote their future use as growing media components. Addition of biochar from sewage sludge increased the N, P and K content of growing media. The biochar addition to peat at a 10%vol rate increased lettuce biomass production by 184–270% and the shoot length by 137–147% despite hydrophysical properties not being improved. Also, biochar addition had a positive effect on growing media microbial biomass which increased more than 966%. In spite of the higher metal concentration in biochar than in sewage sludge, their transfer to plants seems to be reduced when compared with direct sewage sludge use.

More information

Item ID: 56536
DC Identifier: http://oa.upm.es/56536/
OAI Identifier: oai:oa.upm.es:56536
DOI: 10.1080/01448765.2016.1185645
Official URL: http://dx.doi.org/10.1080/01448765.2016.1185645
Deposited by: Memoria Investigacion
Deposited on: 25 Nov 2019 12:58
Last Modified: 25 Nov 2019 12:58
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