The paper industry is an essential but energy-intensive economic sector. This study aims to propose an appropriate inventory method to first determine the GHG emission factor in the life cycle of paper products of Vietnam. The approach overcomes the limitations of the ISO 14067 method by including the environmental burdens from the paper mill’s processes. In 2018, the amount of GHG emitted from cradle to gate when producing a ton of carton box, writing paper, and tissue products (${\text{EF}}_{{\text{CO}}_{\text{2eq}}}$) was 1,366 kg CO_2eq, 1,224 kg CO_2eq, and 751 kg CO_2eq, respectively. High energy intensity is identified as the main reason that causes high life cycle analysis (LCA) GHG emission factors and virgin paper-based products often emit higher LCA GHG amounts than recycled paper-based products. To reduce the emission, the Vietnamese paper mills should increase the use of recycled paper and replace fossil fuels with environmentally friendly energy resources.

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越南纸制品生命周期温室气体排放因子的确定

造纸业是必不可少的能源密集型经济部门。本研究旨在提出一种适当的清单方法，以首先确定越南纸制品生命周期中的GHG排放因子。该方法通过包括造纸厂过程中的环境负担，克服了ISO 14067方法的局限性。2018年，生产一吨纸箱，书写纸和纸巾产品时从摇篮到门的温室气体排放量（${\text{英孚}}_{{\text{一氧化碳}}_{\text{2当量}}}$）分别为1,366 kg CO _2eq，1,224 kg CO _2eq和751 kg CO _2eq。高能量强度被认为是导致高生命周期分析（LCA）温室气体排放因子的主要原因，并且原始纸质产品通常比再生纸质产品排放更高的LCA GHG量。为了减少排放，越南造纸厂应增加对再生纸的使用，并用环保的能源替代化石燃料。