Journal Cleaner Production,Ģ0 Primary data collected at the factories Parameter Value per kg spray dried soluble coffee produced Value per kg roasted and ground coffee produced Yield (in kg), per kg of green coffee Electricity (in kwh) Natural gas (in Nm 3 ) Coffee grounds burned (in kg) Glass (for packaging, in kg) 2.6 negligible Laminate (for packaging, in kg) Paper (mainly for packaging, in kg) n/a Cardboard (mainly for packaging, in kg) Fresh water (own source, in l) 11 n/a Potable water (from public network, in l) Processes taking place at the plant 1. Life cycle assessment of spray dried soluble coffee and comparison with alternatives (drip filter and capsule espresso). 1 A case study on multi-impact life cycle assessment of coffee alternatives Sebastien Humbert*, Vincent Rossi, Manuele Margni, Olivier Jolliet, Carole Dubois, Jon Dettling, Yves Loerincik LC9, Boston MA, USA, SeptemQuantis Box #71794 Boston, MAĢ Goal and Scope Identify critical environmental issues and responsibilities along the entire life cycle chain of three coffee alternatives: the spray dry coffee, drip filter coffee and capsule espresso coffee Compare these three alternativesģ The alternatives Spray dried coffee (SDC) Drip filter coffee (DFC) Capsule espresso coffee (CEC)Ĥ Product system boundary 1 cup of coffeeĦ Product system boundary CO2 N2O CH4 CFCĩ Energy and Greenhouse gases for the three alternativesġ1 The importance to consider the proper functional unit Instant coffee Drip filter Coffee ( traditional coffee )ġ2 The importance to consider the proper functional unit at retailer (per kg) at consumer (per cup)ġ3 Conclusions Manufactured product can have lower burden than less transformed product Higher extraction yield Most of impacts are upstream or downstream from the manufacturer Upstream: work with suppliers, to help them manage well: Fertilizer use Irrigation Forest producing heating wood Downstream: communicate with user, to help Heating only amount needed Switch off idle power (keeping drip filter or espresso machine warm) if not needed Energy and GHG can be correlated Water impact using scarcity can lead to counter-intuitive results to be studied further Water methods review (Thursday) Reference: Humbert S, Loerincik Y, Rossi V, Margni M and Jolliet O (2009).

Travel mug life cycle analysis