Improvement of alumina red mud properties for the development of a revegetation cover

Xenidis, A; Harokopou, AD; Mylona, E; Brofas, G

dc.contributor.author	Xenidis, A	en
dc.contributor.author	Harokopou, AD	en
dc.contributor.author	Mylona, E	en
dc.contributor.author	Brofas, G	en
dc.date.accessioned	2014-03-01T02:50:07Z
dc.date.available	2014-03-01T02:50:07Z
dc.date.issued	2005	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34903
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-32044447898&partnerID=40&md5=707550840ffdd00cbfbe2431aad45e58	en
dc.subject.other	Alkalinity	en
dc.subject.other	Aluminum	en
dc.subject.other	Bauxite deposits	en
dc.subject.other	Caustic soda	en
dc.subject.other	Plants (botany)	en
dc.subject.other	Revegetation	en
dc.subject.other	Salinity measurement	en
dc.subject.other	Sewage sludge	en
dc.subject.other	Alkaline residue	en
dc.subject.other	Alumina red mud	en
dc.subject.other	Calcium phosphate	en
dc.subject.other	Pistacia lentiscus	en
dc.subject.other	Wastes	en
dc.title	Improvement of alumina red mud properties for the development of a revegetation cover	en
heal.type	conferenceItem	en
heal.publicationDate	2005	en
heal.abstract	Alumina red mud is a fine-textured, iron-rich, alkaline residue and is the major waste product of bauxite digestion with caustic soda to remove alumina. The high alkalinity and salinity as well as the poor nutrient status are considered to be the major constraints of red mud revegetation. This research was conducted to evaluate the ameliorating effect of gypsum, sewage sludge, ferrous sulphate, ammonium sulphate, ammonium nitrate and calcium phosphate on alumina red mud. The effectiveness of the mixtures was evaluated by applying extraction tests and performing plant experiments where six plant species were used (I'amarix sp., Pittosporum chinense, Pistacia lentiscus, Atriplex halimus, Centaurea spinosa and Cuercus coccifera). Gypsum amendment reduced significantly the pH, electrical conductivity (EC), and Na and Al content of red mud. Sewage sludge application had an extended effect in improving both the soil structure and the nutrient status of the gypsum amended red mud. Together with the gypsum and sewage sludge, calcium phosphate application into red mud enhanced plant growth and gave the most promising results.	en
heal.journalName	REWAS'04 - Global Symposium on Recycling, Waste Treatment and Clean Technology	en
dc.identifier.spage	959	en
dc.identifier.epage	968	en