Updating and Road‐testing Life Cycle Inventory Data Review Criteria: Toward Global Consensus and Guidance On Data Quality Assessment

ปี 2020  |  เอกสารทางวิชาการ

Data quality of life cycle inventory background databases should be ensured in order to be useful for life cycle assessment (LCA) studies. However, databases do not always have procedures to evaluate the quality of the data sets in place. The Global Guidance Principles for LCA Databases of the United Nations Environment Programme (UNEP) in collaboration with the Society of Environmental Toxicology and Chemistry (SETAC) provide, among others, recommendations to enhance data quality through improved documentation and review.

Flagship 2a in Phase 3 of the UNEP/SETAC Life Cycle Initiative aimed to enable the practical implementation of these recommendations with the development of review criteria and the testing of these criteria on 3 national databases. After a pilot‐testing phase, this project entered a more mature road‐testing exercise, of which the results are presented in this paper. The review criteria have been updated and provide more emphasis on goal and scope documentation completeness and include a new cluster of criteria that evaluate the materiality of the data set. The updated criteria have been applied to national databases of Thailand, Australia, and Chile. All databases would benefit from additional documentation, for example, on system boundaries, the reference model, sampling procedures, and cut‐off criteria. Furthermore, conducting the review was enabled by extensive documentation and data accessibility in LCA software. Communication of the criteria to the database managers enabled them to anticipate data quality requirements of the global LCA community and improve the data sets in advance. Reviewers sometimes had a different interpretation of the criteria, which suggests that there is room for additional fine‐tuning of the process guidance and exemplification of review criteria. This project has demonstrated that the criteria are applicable to and provide useful feedback for databases with different levels of maturity and contribute to improving quality of life cycle inventory (LCI) data.

For further information, please download



ปี 2020  |  เอกสารทางวิชาการ

The potential of industrial waste: using foundry sand with fly ash and electric arc furnace slag for geopolymer brick production

The purpose of this study was to investigate the best ratio of waste foundry sand (WFS), fly ash (FA), and electric arc furnace slag (EAF slag) for the production of geopolymer bricks. In this research study, WFS, FA, and EAF slag were mixed at the ratio of 70:30:0, 60:30:10, 50:30:20, and 40:30:30 with 8M sodium hydroxide (NaOH) and 98% purity sodium silicate (Na2SiO3) with a ratio of Na2SiO3/8M NaOH = 2.5. The mixtures were compacted in 5 cm × 5 cm x 5 cm molds and cured at an ambient temperature for 28 days. Then, their compressive strength was analyzed. The results showed that the geopolymer bricks with the highest compressive strength were those mixed at the 40:30:30 ratio, with a compressive strength of 25.76 MPa.

ปี 2020  |  เอกสารทางวิชาการ

Material Flow Analysis of Maize Supply Chain in Thailand

Maize is an important material for feed production in Thailand. In the past 10 years, the demand of feed production has increased significantly, resulting in the increasing demand of maize. In this research, Material Flow Analysis was applied to track flows of raw materials and resources used in maize supply chain in Thailand in 2015.

ปี 2020  |  เอกสารทางวิชาการ

A life cycle assessment of intermediate rubber products in Thailand from the product environmental footprint perspective

Thailand produces one-third of the world’s total natural rubber and is the top supplier of natural rubber to Europe. The European Product Environmental Footprint (PEF) plays an essential role in reducing the environmental impacts of the rubber products imported into Europe. This is the first work to evaluate the PEF of fresh latex, cup lump, and hevea wood from the plantation phase (primary products) and the PEF of intermediate rubber products: ribbed smoked sheets (RSS), ribbed smoked sheet bales (RSSB), block rubber (Standard Thai Rubber, STR 20), concentrated latex, and lumber AB in Thailand.