Zayneb, C.; Lamia, K.; Olfa, E.; Naïma, J.; Grubb, C. D.; Bassem, K.; Hafedh, M.; Amine, E. Morphological, Physiological and Biochemical
Impact of Ink Industry Effluent on Germination of Maize (Zea mays),
Barley (Hordeum vulgare) and Sorghum (Sorghum bicolor) Bull Environ Contam Toxicol 95, 687-693, (2015) DOI: 10.1007/s00128-015-1600-y
The present study focuses on effects of
untreated and treated ink industry wastewater on germination of maize,
barley and sorghum. Wastewater had a high chemical oxygen demand (COD)
and metal content compared to treated effluent. Germination decreased
with increasing COD concentration. Speed of germination also followed
the same trend, except for maize seeds exposed to untreated effluent
(E), which germinated slightly faster than controls. These alterations
of seedling development were mirrored by changes in soluble protein
content. E exerted a positive effect on soluble protein content and
maximum levels occurred after 10 days with treated effluent using
coagulation/flocculation (TEc/f) process and treated effluent using
combined process (coagulation/flocculation/biosorption) (TEc/f/b).
Likewise, activity of α-amylase was influenced by effluent composition.
Its expression depended on the species, exposure time and applied
treatment. Nevertheless, current results indicated TEc/f/b had no
observable toxic effects on germination and could be a beneficial
alternative resource to irrigation water.