Illustrative image (Photo: baotainguyenmoitruong.vn)Phung Ha, general secretary and vice chairman of the Vietnam FertiliserAssociation said that global agricultural output would decrease by 50% if nofertilisers were used. However, about 2.5% of total global greenhouse gasemissions are related to fertiliser.
Domestic fertiliser manufacturers have taken many measures to significantlyreduce carbon emissions in production.
Energy consumption of ammonia production plants has decreased by more than 15%in the past decade. Several fertiliser companies have implemented greenermethods of fertiliser production, including supply of renewable energy sourcesfor the ammonia production process.
Another solution is to develop fertiliser products such as the decomposing,slow-dissolving, and controlled-release fertilisers that will help increaseabsorption and reduce harm to the environment.
Along with production, the right type, right rate, right timing and rightplacement of the fertilisers is also an effective solution to reduce emissions.
In addition, replacingsynthetic fertilisers with manure or compost products has the potential toreduce emissions by 10-20% or more.
Le Hoang Kiet from Ca MauPetroleum Fertiliser Joint Stock Company (PVCFC) said the company prioritisesinvestment in developing sustainable green production, and reduction in usingfertilisers to achieve the goal of reducing greenhouse gas emissions.
PVCFC is researching energy-saving technologies and solutions. Of which, itapplies green technology in production lines to optimise the efficiency ofusing input materials of its nitrogen fertiliser plant.
In addition, the company is studying production technologies and feasibility onprojects to produce industrial gases such as nitrogen, argon, green hydrogenand food CO2.
For fertiliser product development, PVCFC has developed a number of moderntechnologies such as Bio-Coating technology, Humate complex technology,biotechnology, controlled release fertilisers (CRF) technology, andslow-release fertilisers (SRF) technology, to develop fertiliser product lineshaving high efficiency in agricultural production. Those will increase cropyield and resistance to pests and diseases, and help reduce greenhouse gasemissions.
The application of Bio-Coating technology has helped PVCFC to create economicalfertiliser products, disease resistant fertiliser products and bio fertiliserproducts. That helps reduce the amount of used urea nitrogen fertiliser by15-20%.
PVCFC also builds a soil nutrient map by ecological region integrated with adatabase to digitize the soil database and crop nutrient needs, contributing toimproving efficiency in fertiliser use and reducing greenhouse gas emissions.
The company has also studied and applied using biomass-fuel to replace fuel oil(FO) in drying NPK (nitrogen, phosphorus, and potassium) fertiliser productsand additive products to help slash production costs and carbon emissions.
The company has also made the use of steam and excess heat from sulfuric acidproduction lines to run turbines to generate electricity, contributing toeconomical and efficient use of energy./.
VNA
