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Title: Effect of digestate and digestate supplemented with biochar on switchgrass growth and chemical composition

Journal Article · · Biomass and Bioenergy
 [1];  [2]; ORCiD logo [2];  [1];  [3];  [1];  [1]
  1. Univ. of Illinois at Urbana-Champaign, IL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Michigan State Univ., East Lansing, MI (United States)

Digestate, a by-product of anaerobic digestion, can be an excellent source of nutrients for bioenergy crop production, while biochar, resulting from pyrolyzing biomass, can valorize the nutrients of digestate. The objective of this study was to evaluate the nutritional value of digestate and digestate + biochar for switchgrass production. The greenhouse experiment was conducted to determine the effects of a nitrogen (N) source including 0 N (control), urea (nutrient control), sewage sludge digestate, and sewage sludge digestate + corn stover biochar on switchgrass growth and feedstock composition. Nitrogen sources were observed to significantly increase plant weight at the 32-week harvest, with weight ranging from 94.2 to 125.2 g plant-1, depending on the N source, compared to 70.7 g plant-1 from the negative control. Moreover, switchgrass treated with digestate + biochar showed higher plant weight than samples treated only with digestate. Nitrogen application of urea, digestate, and digestate + biochar had positive effects on plant height and total leaf area in the 32-week harvests and chlorophyll content in the 8-week harvests. Feedstock quality traits including hemicellulose, cellulose, and lignin content were not affected by N sources in either the 8 or 32-week harvests with the exception of ash concentration in the 32-week harvests. Our results indicate that digestate and digestate + biochar can be a potential substitute for chemical fertilizer, resulting in increased biomass yield.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Bioenergy Technologies Office; USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1785728
Alternate ID(s):
OSTI ID: 1778529
Journal Information:
Biomass and Bioenergy, Vol. 144; ISSN 0961-9534
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (53)

Soil carbon dioxide fluxes in established switchgrass land managed for biomass production journal January 2007
A thermochemical–biochemical hybrid processing of lignocellulosic biomass for producing fuels and chemicals journal December 2015
Biomass Yield and Biofuel Quality of Switchgrass Harvested in Fall or Spring journal January 2006
Nitrogen removal in switchgrass biomass under two harvest systems journal November 2000
Temperature and source material influence ecological attributes of ponderosa pine and Douglas-fir charcoal journal August 2006
Biomass Yield and Nutrient Responses of Switchgrass to Phosphorus Application journal January 2012
Switchgrass establishment and seeding year production can be improved by inoculation with rhizosphere endophytes journal December 2012
Performance of Annual and Perennial Biofuel Crops: Nutrient Removal during the First Two Years journal March 2010
Response of Three Warm-Season Grasses to Varying Fertility Levels on five Soils journal July 1982
Combustion characteristics of different biomass fuels journal January 2004
Relationships Between ph Values of Organic Soils and Availabilities of 12 Plant Nutrients journal January 1961
Switchgrass Response to Nitrogen Fertilizer Across Diverse Environments in the USA: a Regional Feedstock Partnership Report journal June 2014
Poultry Litter as a Fertilizer for Bermudagrass: Effects on Yield and Quality journal August 1993
Ameliorating physical and chemical properties of highly weathered soils in the tropics with charcoal - a review journal June 2002
Seasonal Trends for Nonstructural Carbohydrates in Stem Bases of Defoliated Switchgrass journal September 1989
Impact of biochar amendments on the quality of a typical Midwestern agricultural soil journal September 2010
Switchgrass for forage and bioenergy: harvest and nitrogen rate effects on biomass yields and nutrient composition journal April 2010
Switchgrass and Soil Carbon Sequestration Response to Ammonium Nitrate, Manure, and Harvest Frequency on Conservation Reserve Program Land journal January 2007
Switchgrass Biomass Production in the Midwest USA journal January 2002
Dedicated Energy Crops and Crop Residues for Bioenergy Feedstocks in the Central and Eastern USA journal June 2016
Effects of nitrogen fertilization on biomass yield and quality in large fields of established switchgrass in southern Iowa, USA journal December 2008
Addition of activated switchgrass biochar to an aridic subsoil increases microbial nitrogen cycling gene abundances journal March 2013
Composition of Native Warm-Season Grasses for Bioenergy Production in Response to Nitrogen Fertilization Rate and Harvest Date journal May 2011
Wildfire-Produced Charcoal Directly Influences Nitrogen Cycling in Ponderosa Pine Forests journal March 2006
Biomass Production of ‘Alamo’ Switchgrass in Response to Nitrogen, Phosphorus, and Row Spacing journal January 2001
Registration of ‘Liberty’ Switchgrass journal January 2014
Assessment of the fertiliser potential of digestates from farm and agroindustrial residues journal May 2012
Evaluating environmental consequences of producing herbaceous crops for bioenergy journal April 1998
An Inexpensive, Accurate Method for Measuring Leaf Area and Defoliation Through Digital Image Analysis journal December 2002
Mycorrhizal responses to biochar in soil – concepts and mechanisms journal September 2007
Effect of Charcoal on Certain Physical, Chemical, and Biological Properties of Forest Soils journal January 1948
Development of switchgrass (Panicum virgatum) as a bioenergy feedstock in the United States journal June 2005
Pilot-Scale Gasification of Corn Stover, Switchgrass, Wheat Straw, and Wood: 1. Parametric Study and Comparison with Literature journal February 2010
Composted and Noncomposted Manure Application to Conventional and No‐Tillage Systems: Corn Yield and Nitrogen Uptake journal September 1999
Management of Switchgrass-Dominated Conservation Reserve Program Lands for Biomass Production in South Dakota journal January 2006
Combustion quality of biomass: practical relevance and experiments to modify the biomass quality of Miscanthus x giganteus journal May 1997
Fertilization of Native Grass and Weeping Lovegrass 1 journal March 1975
Energy production from biomass (part 1): overview of biomass journal May 2002
Yearlong semi-continuous operation of thermophilic two-stage anaerobic digesters amended with biochar for enhanced biomethane production journal November 2017
Nitrogen fertility and harvest management of switchgrass for sustainable bioenergy feedstock production in Illinois journal July 2013
Towards a sustainable paradigm of waste-to-energy process: Enhanced anaerobic digestion of sludge with woody biochar journal November 2016
Evaluation of intercropped switchgrass establishment under a range of experimental site preparation treatments in a forested setting on the Lower Coastal Plain of North Carolina, U.S.A. journal November 2012
Leaf and Stem Yields and Forage Quality of Three N‐fertilized Warm‐Season Grasses 1 journal March 1979
Assessment of the state of the art of technologies for the processing of digestate residue from anaerobic digesters journal May 2013
Producing pipeline-quality biomethane via anaerobic digestion of sludge amended with corn stover biochar with in-situ CO2 removal journal November 2015
Management of Switchgrass for Forage and Seed Production journal January 1994
Silica and Ash in Native Plants of the Central and Southeastern Regions of the United States journal October 1987
Quadratic and Quadratic‐Plus‐Plateau Models for Predicting Optimal Nitrogen Rate of Corn: A Comparison journal January 1994
Agricultural use of digestate for horticultural crop production and improvement of soil properties journal November 2012
Role of Nutrient-Enriched Biochar as a Soil Amendment during Maize Growth: Exploring Practical Alternatives to Recycle Agricultural Residuals and to Reduce Chemical Fertilizer Demand journal June 2019
Biochar as a sorbent for contaminant management in soil and water: A review journal March 2014
Harvest Management of Switchgrass for Biomass Feedstock and Forage Production journal January 1999
The Biology and Agronomy of Switchgrass for Biofuels journal September 2005