Hrvatske vode, Vol. 33 No. 131, 2025.
Original scientific paper
The reuse of highly concentrated RO concentrate (50 %) from wastewater generated by textile industry for basil cultivation
Iva Ćurić
; Sveučilište u Zagrebu, Fakultet kemijskog inženjerstva i tehnologije, Zagreb, Hrvatska
*
Fran Hrlić
; Sveučilište u Zagrebu, Fakultet kemijskog inženjerstva i tehnologije, Zagreb, Hrvatska
Marin Matošić
; Sveučilište u Zagrebu, Fakultet kemijskog inženjerstva i tehnologije, Zagreb, Hrvatska
Davor Dolar
; Sveučilište u Zagrebu, Fakultet kemijskog inženjerstva i tehnologije, Zagreb, Hrvatska
* Corresponding author.
Abstract
This research studies the reuse of 50 % concentrate from reverse osmosis (RO), obtained from textile wastewater (TWW) as an alternative source in the irrigation of basil (Ocimum basilicum). In order to maximally reuse water and retain nutrients, a hybrid ultrafiltration system and RO were used. The basil irrigated with a RO concentrate had the largest share of dry matter (14.96 %) and nutrient intake, particularly of P₂O₅ (1.37 %), K₂O (4.39 %) and Cu (8.58 mg/kg). Although the TWW contained more Mn, Ca and Mg, it resulted in a lower biomass, probably due to ionic imbalance or stress caused by microelements. The water used from the water supply system lead to the lowest growth and nutrient intake. These results indicate that the 50 % RO concentrate, which is often considered waste, can be safely reused for irrigation in agriculture, thus supporting the objectives of circular economy by reducing the consumption of drinking water.
Keywords
Reverse osmosis, concentrate, textile wastewater, basil, reuse
Hrčak ID:
339874
URI
Publication date:
2.4.2025.
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