Olive mill wastewater treatment using a solar reactor and reuse of the waste as liquid fertilizer

Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_ROWA-12-1_003

تاریخ نمایه سازی: 29 آبان 1401

Abstract:

Purpose The main aim of this study was to treat olive mill wastewater (OMW) using a photo-Fenton's solar reactor;  to investigate its potential use as liquid fertilizer and to evaluate its impact on pepper crop.Method Olive mill wastewater was collected in a tank ۱۰۰۰ L and supplemented with ۲۰۰۰ gr FeSO۴.۷H۲o. After that, ۱۵۰ ml H۲O۲ was added to the tank to start Fenton's reactor. The treated OMWwas collected in a container and NaOH with a concentration of ۱ M was added to improve the pH of the treated OMW. Pepper seedlings were cultivated on ۱۶ February, ۲۰۲۰ inside the greenhouse for a period of five months. The treated OMW was used as liquid fertilizer and compared with chemical fertilizer as control.Results The pH and electrical conductivity of treated OMW were ۷.۵ and ۷.۶ dS/m, respectively. Furthermore, the control produced the highest yield and fruit number significantly (p < ۰.۰۵) compared to the other treatments, followed by OMW treated by stabilization bond (SB-OMW۱۰۰%). Also the treatments fertilized by OMW treated by solar reactor (SR-OMW۵۰%) and stabilization bond (SB-OMW۱۰۰%) produced the same plant length at the end of the growing period.Conclusion The concentrations of N, P, and K of treated OMW (۰.۲۱, ۰.۰۶, and ۰.۶۸ respectively) were quite low and supplementary fertilization was necessary to improve the nutrients value of the treated OMW. The solar reactor could be a valuable and useful tool in treatment of olive mill wastewater for agricultural purposes mainly on small scale sites.

Authors

Mahmoud Rahil

Department of Environment and Sustainable Agriculture, Faculty of Agricultural Science and Technology, Palestine Technical University Kadoorie, Tulkarm, Palestine

Suliman Hussain

Department of Environment and Sustainable Agriculture, Faculty of Agricultural Science and Technology, Palestine Technical University Kadoorie, Tulkarm, Palestine

Hadeel Zahran

Department of Environment and Sustainable Agriculture, Faculty of Agricultural Science and Technology, Palestine Technical University Kadoorie, Tulkarm, Palestine

Marah Saffarini

Department of Environment and Sustainable Agriculture, Faculty of Agricultural Science and Technology, Palestine Technical University Kadoorie, Tulkarm, Palestine

Imad Bani Odeh

Department of Environment and Sustainable Agriculture, Faculty of Agricultural Science and Technology, Palestine Technical University Kadoorie, Tulkarm, Palestine

Raneen Fayad

Department of Environment and Sustainable Agriculture, Faculty of Agricultural Science and Technology, Palestine Technical University Kadoorie, Tulkarm, Palestine

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