Titel der Prsentation Treatment of residuals from coffee production - - PDF document

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Titel der Prsentation Treatment of residuals from coffee production - - PDF document

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Titel der Prsentation Treatment of residuals from coffee production in Costa Rica Naxos 13 June 2018 Gerold Hafner Treatment of residuals from coffee production in Costa Rica Organic Waste- and Resources Management in the context of NAMA

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Titel der Präsentation

21.06.2018 Universität Stuttgart 1

Treatment of residuals from coffee production in Costa Rica

Naxos 13 June 2018 Gerold Hafner

Treatment of residuals from coffee production in Costa Rica

Organic Waste- and Resources Management in the context of NAMA Café de Costa Rica

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Titel der Präsentation

21.06.2018 Universität Stuttgart 2

Gerold Hafner 3

Content

Introduction & background Recommendations Methodology Research project Summary Preliminary results

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Introduction

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Titel der Präsentation

21.06.2018 Universität Stuttgart 3

  • Costa Rica carbon neutral by 2021
  • Nationally Appropriate Mitigation Actions (NAMAs): NAMA Café de Costa Rica
  • Coffee production is an integral part of the nation’s history and identity.
  • Important economic sector of Costa Rica

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Background

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  • Coffee production causes currently emissions of ca. 1.02 kg of CO2e / kg of green

coffee (Ruiz, 2017).

  • Treatment of residuals from coffee production
  • Diagnosis of the current status quo
  • Potential for optimization
  • Technical implementation
  • Alternative variants for treatment + valorization

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  • bjectives in the coffee sector

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Titel der Präsentation

21.06.2018 Universität Stuttgart 4

research project

Management of Coffee Residuals for Reducing Greenhouse Gas Emissions from Anaerobic Degradation (NSP Low Carbon Coffee Costa Rica)

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  • Develop and apply a methodology to measure the impact of the application of an

aerobic treatment technology for coffee residuals

  • Potential to reduce greenhouse gases and other harmful impacts on the environment
  • Compare to the treatment previously applied

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  • bjectives of the study

NAMA de Cafe de Costa Rica

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Costa Rica NAMA de Cafe de Costa Rica

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Coffee Area NAMA de Cafe de Costa Rica

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21.06.2018 Universität Stuttgart 6 Cooperatives:

  • CoopeTarrazu R.L., San Marcos, Tarrazú
  • Coopeantes R.L. (The Diamond), Athens, Alajuela
  • Coopevictoria R.L., Greece, Alajuela
  • CoopeAgri R.L., Pérez Zeledón

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partners NAMA de Cafe de Costa Rica

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Farms:

  • Lake View, San Marcos, Tarrazú
  • Santa Anita, Naranjo, Alujuela
  • Las Marias, Naranjo, Alajuela

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partners NAMA de Cafe de Costa Rica

Naxos/ 13 June 2018

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Titel der Präsentation

21.06.2018 Universität Stuttgart 7

Methodology

  • On-site inspection
  • Diagnosis of handling + composting of organic residues
  • Possiblities for technical optimization of composting process
  • Measurements + analysis of compost
  • Determination of boundary conditions
  • Identification of possible co-substrates
  • Alternative valorization

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Methodical approach

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delivery Handling of organic residues

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coffee fruits Handling of organic residues

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peeling process Handling of organic residues

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interim storage Handling of organic residues

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transport to composting Handling of organic residues

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Composting area Handling of organic residues

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No treatment of residuals Diagnosis of the current status quo

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Composting in cooperatives Diagnosis of the current status quo

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21.06.2018 Universität Stuttgart 12

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Composting in farms Diagnosis of the current status quo

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Direct application to coffee plants Diagnosis of the current status quo

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21.06.2018 Universität Stuttgart 13

Measurements

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Measurement of emissions Diagnosis of the current status quo

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21.06.2018 Universität Stuttgart 14

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Parameters Diagnosis of the current status quo

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  • Temperature
  • Methane, CH4
  • Oxygen, O2
  • Carbon dioxide, CO2
  • Humidity
  • Hydrogen sulphide, H2S
  • Dinitrogen monoxide, N2O
  • Ammonia, NH3
  • Laboratory analyses

preliminary results

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21.06.2018 Universität Stuttgart 15

  • Anaerobic zones after one day of

composting

  • High humidity in piles at beginning
  • f process – too little humidity after

some days

  • Too little oxygen in center of piles
  • Insects, odor + dust
  • Large proportion of residuals

untreated

  • GHG: climate relevant emissions.

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Composting - Problems

Naxos/ 13 June 2018 9 O2 CH4 O2 O2 O2 O2 O2 O2 O2 O2 O2 CH4 CH4 CH4 CH4 Gerold Hafner 30

emissions Preliminary results

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CH4 Preliminary results

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temperature Preliminary results

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Oxigen Preliminary results

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recommendations

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21.06.2018 Universität Stuttgart 18

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membrane cover Recommendations (excerpt)

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  • Best Oxygen Supplement
  • Avoidance of anaerobic areas

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active ventilation Recommendations (excerpt)

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21.06.2018 Universität Stuttgart 19

  • Production of RDF
  • Anaerobic digestion (synergetic effects with waste water treatment)
  • Production of beverages (lemonade, beer, liqueur)

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Alternative valorization of organic residuals

Naxos/ 13 June 2018

summary

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Titel der Präsentation

21.06.2018 Universität Stuttgart 20 I. Relevant GHG emissions in coffee sector II. Process optimization through adapted operational management III. Add additional substrates IV. Training for cooperatives and individual farms V. Quality control of compost VI. Alternative valorization of coffee residues VII. Climate-neutral coffee production is possible

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summary

Naxos/ 13 June 2018

Co-authors

Gerold Hafner Martin Reiser Macarena San Martin

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21.06.2018 Universität Stuttgart 21

E-Mail Telefon +49 (0) 711 685-

Thank you very much!

Gerold Hafner 6 54 38 University of Stuttgart, ISWA (RIK) Gerold.Hafner@iswa.uni-stuttgart.de Bandtäle 2 70569 Stuttgart Germany