01667naa a2200265 a 450000100080000000500110000800800410001902400390006010000220009924500810012126000090020252009340021165000160114565300160116165300160117765300210119365300190121465300240123370000140125770000150127170000200128670000180130670000170132477300600134119018752019-05-03       2011    bl uuuu     u00u1 u    #d7 a10.1016/j.jhazmat.2011.04.0952DOI1 aPEREIRA, B. F. F.  aReclaimed wastewaterbimpact on soil-plant system under tropical conditions.  c2011  aThis study investigated the ionic speciation of reclaimed urban wastewater (RWW), and the impact of increasing RWW irrigation rates on soil properties and plant nutrition under field conditions. Most RWW elements (&gt66%) are readily available as NH4 +, Ca2+, Mg2+, K+, SO4 2−, Cl−, H3BO3, Mn2+ and Zn2+, but in imbalanced proportion for plant nutrition. Lead, Cd, Cr and Al in RWW are mostly bounded with DOM or OH−..Irrigation with RWW decreased soil acidity, which is beneficial to the acidic tropical soil. Although RWW irrigation builds exchangeable Na+ up, the excessive Na+ was leached out of the soil profile after a rainy summer season (&gt400 mm). Benefits of the disposal of RWW to the soil under tropical conditions were discussed, however, the over irrigation with RWW (&gt100% of crop evapotranspiration) led to a nutritional imbalance, accumulating S and leading to a plant deficiency of P and K.  awater reuse  aAcidic soil  aAl toxicity  aIonic speciation  aUrban effluent  aWastewater disposal1 aHE, Z. L.1 aHERPIN, U.1 aNOGUEIRA, S. F.1 aMONTES, C. R.1 aMELFI, A. J.  tJournal of Hazardous Materialsgv. 192, p. 54-61, 2011.