| Autor: |
Rocha de Moura ES; a Department of Agricultural and Forest Sciences , Federal Rural University of the Semi-Arid Region , Mossoró , Brazil., Rebouças Cosme C; a Department of Agricultural and Forest Sciences , Federal Rural University of the Semi-Arid Region , Mossoró , Brazil., de Sousa Leite T; b Department of Soil Science , University of São Paulo , Piracicaba , Brazil., da Silva Dias N; a Department of Agricultural and Forest Sciences , Federal Rural University of the Semi-Arid Region , Mossoró , Brazil., Dos Santos Fernandes C; a Department of Agricultural and Forest Sciences , Federal Rural University of the Semi-Arid Region , Mossoró , Brazil., de Sousa Neto ON; a Department of Agricultural and Forest Sciences , Federal Rural University of the Semi-Arid Region , Mossoró , Brazil., de Sousa Junior FS; a Department of Agricultural and Forest Sciences , Federal Rural University of the Semi-Arid Region , Mossoró , Brazil., Costa Rebouças T; a Department of Agricultural and Forest Sciences , Federal Rural University of the Semi-Arid Region , Mossoró , Brazil. |
| Abstrakt: |
Reverse osmosis is a widely known technology used to produce fresh water from brackish waters. However, the reject brine from desalination plants poses a serious threat to the environment due to soil and groundwater salinization. The aim of this study was to investigate the potential of Atriplex nummularia to extract salts from a soil irrigated with reverse osmosis brine, at varying moisture levels. A field experiment was conducted in a split-plot design, with randomized complete blocks replicated four times. Treatments consisted of irrigation with reject brine in the main plots, with four relative percentages of the soil moisture at field capacity (100, 85, 70, and 50%), and two levels of organic fertilization in the subplots (0 and 1.5 L plant -1 of goat manure). The mineral composition of leaves and stems indicated that the highest salt extraction by plants occurred when soil moisture was maintained at 100% field capacity. The salt extraction capacity of A. nummularia indicates a high potential for phytoremediation of soils affected by brine disposal from reverse osmosis plants. |
