Abstract
Growing quantities of vegetable water are dumped into nature every year without any control. By their chemical composition, they have a very high polluting power. In the context of research on treatment and recovery processes, we are interested in the recovery of these effluents by the humidification of composts in a context of soil improvement, but also by the treatment of electrocoagulation and their recovery in germination of Glycine soybeans max. Physico-chemical analysis of raw margin revealed that it was characterized by an acidic pH, black colour, and contained a high organic and mineral load that was not biodegradable. After treatment, these characteristics experienced very remarkable reductions in phenolic compounds (15.27%), chemical oxygen demand (COD) of 98%, biochemical oxygen demand during five days (BOD5) (86.5%), conductivity (82%), salinity (82.77%) their pH increased until neutrality (7.62), and that the colour had been considerably reduced in intensity as a result of a reduction in their polluting load. The effects on the germination of soybean were favourable for all the dilutions used. During the maturation of composts precisely in the mesophilic phase, we observed degradations and transformations of organic matter and also significant transformation of the total mass of initial organic carbon. At the end of the maturation obtained after four months, the high germination indices obtained testify to good stability of the composts and a decrease in its phytotoxicity.
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Claims 13
Claim · model-written summary
Treatment reduced the chemical oxygen demand of olive mill wastewater by 98%.
Not reportedTaxon
Verbatim
e1“chemical oxygen demand (COD) of 98%”
Claim · model-written summary
Treatment reduced the biochemical oxygen demand over five days of olive mill wastewater by 86.5%.
Not reportedTaxon
Verbatim
e2“biochemical oxygen demand during five days (BOD5) (86.5%)”
Claim · model-written summary
Treatment reduced phenolic compounds in olive mill wastewater by 15.27%.
Not reportedTaxon
Verbatim
e3“reductions in phenolic compounds (15.27%)”
Claim · model-written summary
Treatment reduced the conductivity of olive mill wastewater by 82%.
Not reportedTaxon
Verbatim
e4“conductivity (82%)”
Claim · model-written summary
Treatment reduced the salinity of olive mill wastewater by 82.77%.
Not reportedTaxon
Verbatim
e5“salinity (82.77%)”
Claim · model-written summary
The pH of the treated wastewater increased to neutrality, 7.62.
Not reportedTaxon
Verbatim
e6“their pH increased until neutrality (7.62)”
Claim · model-written summary
The colour of the treated wastewater was considerably reduced in intensity.
Not reportedTaxon
Verbatim
e7“the colour had been considerably reduced in intensity”
Claim · model-written summary
Soybean germination was favourable for all dilutions of the treated wastewater used.
- Taxon
- soybean
Glycine maxt0 - Treatment
- all the dilutions usede1
- Outcome
- germinatione1
- Direction
- favourablee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in the germination of soybean”
e1“The effects on the germination of soybean were favourable for all the dilutions used”
Claim · model-written summary
High germination indices indicate good stability of the composts.
- Taxon
- soybeanGlycine maxt0
- Outcome
- germination indicese1
- Qualifier
- good stability of the compostse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in the germination of soybean”
e1“the high germination indices obtained testify to good stability of the composts”
Claim · model-written summary
Compost phytotoxicity decreased during maturation.
- Taxon
- soybeanGlycine maxt0
- Outcome
- phytotoxicitye1
- Direction
- decreasee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in the germination of soybean”
e1“a decrease in its phytotoxicity”
Claim · model-written summary
Organic matter was degraded and transformed during compost maturation.
- Outcome
- degradations and transformations of organic mattere1
Not reportedTaxon
Verbatim
e1“we observed degradations and transformations of organic matter”
Claim · model-written summary
The total mass of initial organic carbon was significantly transformed during compost maturation.
- Outcome
- total mass of initial organic carbone1
Not reportedTaxon
Verbatim
e1“significant transformation of the total mass of initial organic carbon”
Claim · model-written summary
Raw olive mill wastewater had a high organic and mineral load that was not biodegradable.
Not reportedTaxon
Verbatim
e1“contained a high organic and mineral load that was not biodegradable”