Article (Scientific journals)
Environmental impacts of phosphoric acid production using di-hemihydrate process: a Belgian case study
Belboom, Sandra; Szöcs, Carl; Léonard, Angélique
2015In Journal of Cleaner Production, 108, p. 978-986
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Keywords :
Phosphoric acid; Life Cycle Assessment (LCA); Fertilizer grade; Purified grade; Wet process; Di-hemihydrate
Abstract :
[en] This paper undertakes an environmental evaluation of phosphoric acid production, using industrial data from Prayon SA in Belgium. Phosphoric acid is produced using the wet di-hemihydrate process also called Central Prayon process. Both grades of phosphoric acid are evaluated: fertilizer and purified grades. Specificities of this plant are highlighted and improvements of the process in terms of energy and facilities integration through years are quantified as environmental benefits. The implementation on site of two sulphuric acid production facilities and their energetic integration allow a reduction of climate change impact of 80%. Results also show the importance of phosphogypsum valorisation which is sold for the main part in this case study. Concerning the purified grade, this specific process has been compared to the thermal process, using Best Available Techniques (BAT) values for the modelling. It shows a reduced environmental impact for the wet process in the majority of categories studies.
Disciplines :
Chemical engineering
Author, co-author :
Belboom, Sandra ;  Université de Liège > Département de chimie appliquée > Génie chimique - Procédés et développement durable
Szöcs, Carl;  Prayon SA
Léonard, Angélique  ;  Université de Liège > Département de chimie appliquée > Génie chimique - Procédés et développement durable
Language :
English
Title :
Environmental impacts of phosphoric acid production using di-hemihydrate process: a Belgian case study
Publication date :
December 2015
Journal title :
Journal of Cleaner Production
ISSN :
0959-6526
eISSN :
1879-1786
Publisher :
Elsevier Science, Oxford, United Kingdom
Volume :
108
Pages :
978-986
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 July 2015

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