Quan Van NguyenCarbon Friendly Pty Ltd · Sustainability
Quan Van Nguyen
PhD
About
19
Publications
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Citations since 2017
Introduction
Dr Quan Nguyen is an agri-environmental researcher who is passionate about the sustainable development of agriculture. His research interest is focusing on Life Cycle Assessment within the biological production system, GHGs emissions mitigation strategies in livestock and crop production, Soil Fertility & Quality.
PhD work at the Uni. of Copenhagen investigated C & N cycling in agricultural soils and the dynamics of soil O2 using the oxygen images system, N2O isotopomer and 13C technique.
Additional affiliations
November 2013 - February 2017
December 2012 - present
April 2007 - March 2011
Education
November 2013 - November 2017
February 2011 - December 2012
September 2002 - October 2006
Publications
Publications (19)
We examined effects of hydraulic retention time (HRT) of anaerobic digestion on soil O2 consumption and N2O emission after application of its residue (digestate) to soil. The results showed that no significant difference in N2O emission between digestates of pig slurry and organic wastes at 15 and 30 days retention time. N2O isotopomer data also su...
We hypothesized that 1) soil O2 consumption by cattle slurry treatment (CS) is much greater than cattle slurry incorporate with nitrification inhibitor-DMPP (CSD) and therefore 2) soil emitted N2O and its production pathways are affected. The results proved that the O2 depletion zones was significantly higher than for CS treatment than CSD, also DM...
Reducing environmental impacts by increasing circularity is highly relevant to the textiles sector. Here, we examine results from life cycle assessment (LCA) and circularity indicators applied to renewable and non-renewable fibres to evaluate the synergies between the two approaches for improving sustainability assessment of textiles. Using LCA, im...
Purpose
Changes in the production of Australian cotton lint are expected to have a direct environmental impact, as well as indirect impacts related to co-product substitution and induced changes in crop production. The environmental consequences of a 50% expansion or contraction in production were compared to Australian cotton production’s current...
Purpose
Garment production and use generate substantial environmental impacts, and the care and use are key determinants of cradle-to-grave impacts. The present study investigated the potential to reduce environmental impacts by applying best practices for garment care combined with increased garment use. A wool sweater is used as an example becaus...
Biogas production from manure has become increasingly widespread worldwide in recent years due to the potential for renewable energy production and mitigation of greenhouse gas emissions. However, the sustainable development of this technology requires the appropriate utilization of an enormous volume of its residues, known as digestates, to minimi...
Application of cattle slurry to grassland soil has environmental impacts such as ammonia volatilization and greenhouse gas emissions. The extent, however, depends on application method and soil conditions through their effects on infiltration and oxygen (O2) availability during subsequent decomposition. Here, we applied O2 planar optode and N2O iso...
Knowledge about the environmental impacts associated with the application of anaerobic digestion residue to agricultural land is of interest owing to the rapid proliferation of biogas plants worldwide. However, there is virtually no information about how soil-emitted N2O is affected by the feedstock hydraulic retention time (HRT) in the biogas dige...
Several countries have set a number of targets to boost energy production from renewable sources. Biogas production is expected to increase significantly over the next few decades and to play an important role in future energy systems. To achieve these ambitious targets, the biogas production has to be improved. The economic and environmental perfo...
The BioChain project focuses on value chains for biogas production in Denmark. Biogas production is based on liquid manure (slurry) from agriculture and other biomasses to increase the energy yield. To a great extent the digestates are recycled to agricultural lands as a valuable fertilizer, but environmental impacts, such as greenhouse gas (GHG) e...
The impacts of climate change on livestock production are complex problems, existing in the rela-tionship among this sector and others sectors such as environmental, social, economic and political systems. The complexity and dynamic of these impacts cannot be solved simply in isolation with the linear approach. A system thinking methodology is intr...
This thesis consists of five chapters. Chapter 1 introduces the background and aims of this research. Chapter 2 presents a literature review on research related to the impacts of climate change on livestock production systems. This chapter includes four main parts: a brief overview of Australian livestock production; research on direct and indirect...
Projects
Projects (3)
The objective of this project was to evaluate the environmental impacts of Australian cotton lint under a change in 50% expansion or reduction of production. The consequential life cycle assessment (cLCA) approach was applied to model the market effect of the global cotton fiber demand on Australian cotton production and the impacts of changes in the regional crop transformation.
This project is funded by Cotton Research and Development Corporate (CRDC), Australia to Integrity Ag & Environment.
Assessing the environmental impacts of wool garments supply chain and compared with other natural and synthetics fibres garments.
BioChain project provides tools that significantly contribute to achievement of a 4-fold increase in Danish biogas production, which is the target of the Danish government s energy plan. Energy from biogas is needed in periods with little wind energy and for the transport sector.The results contribute to the development of resilient and economically viable biogas production platforms. Bioenergy production and GHG reductions are invariably related to biomass composition and the biomass management chain from production in agriculture,households and industries to field application.
The overall aim is to provide scientifically based, sound solutions for resilient and sustainable large-scale Danish biogas production.
Specific objectives are:
1) Development of an integrated assessment of value chains. Analysis of value chains will be supported by 2) the development of computational models for biogas production and 3) for environmental impacts, based on simple biomass characterisation methods; 4) the development of new analytical procedures for dynamic assessments of economics and biomass flow. The integrated assessment framework will be implemented and validated at two biogas production plants, one using primarily agricultural wastes (straw, manure) and one using primarily household and industrial organic waste to feed the bioreactors. The plants have the technology to use the biogas, or to sell it to a variety of end-users.
My current Phd project focus on the environmental impacts associated with land application of digestates using a combination of tracer studies and simple modeling. CO2, N2O production potential and others gasesemission (CH4, NH3 and NO) have been examined for varieties of digestates of different feedstocks after land application both in short-term and long-terms.
Project website: http://biochain.dk/index.html
