Ecotoxicological evaluation of the short term effects of fresh and stabilized textile sludges before application in forest soil restoration.
The short term (eco)toxicity potential of fresh and stabilized textile sludges, as well as the short term (eco)toxicity of leachates obtained from both fresh and stabilized textile sludges, was evaluated by a battery of toxicity tests carried out with bacteria, algae, daphnids, fish, earthworms, and higher plants. The (eco)toxicological results showed that, after 120 d of stabilization, the experimental loading ratio of 25% sludge:75% soil (v/v) (equivalent to 64.4 ton/ha) did not significantly increase toxicity effects and increased significantly the biomass yield for earthworms and higher plants. The rank of biological sensitivity endpoints was: Algae approximately Plant biomass > Plant germination approximately Daphnids > Bacteria approximately Fish > Annelids. The lack of short term toxicity effects and the stimulant effect observed with higher plants and earthworms are good indications of the fertilizer/conditioner potential of this industrial waste, which after stabilization can be used in the restoration of a non-productive forest soil.
Rosa
Edson V C
EV
Universidade do Vale do Itajaí, Centro de Ciências Tecnológicas da Terra e do Mar, Rua Uruguai, 458, Itajaí SC 88302-202, Brazil.
Giuradelli
Thayse M
TM
Corrêa
Albertina X R
AX
Rörig
Leonardo R
LR
Schwingel
Paulo R
PR
Resgalla
Charrid
C
Radetski
Claudemir M
CM
D000818:Animals; D018533:Biomass; D001937:Brassica / Q000254:growth & development; D003621:Daphnia / Q000187:drug effects; D017753:Ecosystem; D052918:Environmental Restoration and Remediation / Q000379:methods; D007220:Industrial Waste / Q000009:adverse effects*; D008826:Microbial Sensitivity Tests / Q000379:methods; D009835:Oligochaeta / Q000502:physiology; D011036:Poecilia / Q000502:physiology; D044444:Scenedesmus / Q000254:growth & development; D012987:Soil / Q000032:analysis; D013783:Textile Industry; D018675:Toxicity Tests / Q000379:methods; D014197:Trees; D018505:Waste Management / Q000379:methods*
D007220:Industrial Waste; D012987:Soil