Utilization of the Sludge Generated by Leachate Electrocoagulation treatment as Source of Nutrients in Initial Corn Growth (zea Mays L.)
Name: FERNANDO SILVA BETIM
Type: MSc dissertation
Publication date: 28/03/2016
Advisor:
Name |
Role |
|---|---|
| HONÉRIO COUTINHO DE JESUS | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| GEISAMANDA PEDRINI BRANDÃO ATHAYDE | Internal Examiner * |
| HONÉRIO COUTINHO DE JESUS | Advisor * |
| LUIZ CARLOS PREZOTTI | External Examiner * |
Summary: The urban solid wastes (USW) in landfills are one of biggest urban issues today. Among them, there is leachate, a contaminant derivate from physical, chemical and biochemical decomposition of leachate, which, in general, is composed of dissolved organic matter, xenobiotic organic compounds, inorganic macroconstituents and highly toxic metals. Among the possible treatments, electrocoagulation stands out. After this treatment, an organic matter, agriculture important nutrients rich sludge remains. This study evaluated the use of sludge generated in the leachate treatment as a source of nutrients in the early growth of maize. Doses equivalent to 0, 5, 10, 20, 30 and 40 t ha-1 were applied to the soil and in after 30 days, the maize was seeded, and harvested after 30 days. It was verified, using ICP OES techniques and F AAS techniques, increased availability of Na, K, Ca, Mg, Mn, Fe, Cu and Zn, reduction of Al toxic fraction, and constant P in the soil. In maize leaves, there was an increase in the levels of Na, K, Mn, Fe and Zn, reduction of Ca and Mg, and constant P and Al. No significant increases in dry weight and plant height were observed. In addition, both analytical techniques showed good linearity, accuracy and suitable LOD and LOQ
