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All Journal Indonesian Journal of Science and Technology
Rachid Sabbahi
University of Ibn Zohr
Computer Science & IT Environmental Science

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Amorphous Iron Phosphate: Inorganic Sol-Gel Synthesis-Sodium and Potassium Insertion Fatima-Ezzahra Maarouf; Sanaa Saoiabi; Khalil Azzaoui; Hind Khalil; Mariam Khalil; Ahmed El Yahyaoui; Ahmed Saoiabi; Belkheir Hammouti; Moulay Hfid Youssoufi; Sergey Shityakov; Othman Hamed; Shehdeh Jodeh; Rachid Sabbahi
Indonesian Journal of Science and Technology Vol 7, No 2 (2022): IJOST: VOLUME 7, ISSUE 2, September 2022
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v7i2.45948

Abstract

Amorphous iron phosphate, FePO4.2H2O, was synthesized at ambient temperature using an inorganic sol-gel method coupled with a microwave route. The experimental conditions for the gelling of the Fe (III)-H3PO4 system are defined.  Potentiometric Time Titration (PTT) and Potentiometric Mass Titration (PMT) methods were used to investigate the acid-base surface chemistry of obtained phosphate. Variations of surface charge with the contact time, Q = f(t), are examined for time contact ranged from 0 to 72 hours. The concentrations suspensions used for this purpose were 0.75, 1.25, and 2.5 g/L. The point of zero charges (PZC) and isoelectric point (IEP) were defined using the derivative method examining the variations , at lower contact time. A value of 5.4 was obtained for both PZC and IEP. Q in the function of the t method is performed for synthesized FePO4. 2H2O in NaCl and KCl electrolytes. The optimal surface charge of 40 C corresponding to insertion of 4.2x10-4 M of Na+ or K+, is achieved in explored conditions. The results suggest that the synthesized iron phosphate is amorphous.
An Assessment of the Efficacy of Pheromone Traps in Managing the Red Palm Weevil Rachid Sabbahi; Khalil Azzaoui; Belkheir Hammouti
Indonesian Journal of Science and Technology Vol 6, No 2 (2021): IJOST: VOLUME 6, ISSUE 2, September 2021
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v6i2.34556

Abstract

This experiment was performed in date palm farms to assess the effectiveness of a newly designed pheromone trap (i.e., funnel trap) in capturing red palm weevil (RPW) adults and to compare it to traditional traps. The number of captured RPWs varied by month, with a total of 3931 adults captured during the experiment. Analysis of variance demonstrated significant differences in the number of captures between the three traps. The funnel traps captured 1627 RPW adults in total, while the buried and burlap bucket traps captured 1079 and 1225 weevils, respectively. The mean (± SE) number of captures/trap/weeks was 2.62 ± 0.11 in funnel traps, which was significantly higher than that of buried bucket traps (1.73 ± 0.06) and burlap bucket traps (1.97 ± 0.07). Both sexes were attracted to traps; however, the number of female weevils captured was significantly higher than that of males with a sex ratio (female/male) of 1.58 ± 0.03. According to the findings, the pheromone-food-bait funnel trap is a promising solution for reducing RPW populations and thus protecting date palm trees from infestations.
Co-Authors Ahmed El Yahyaoui Ahmed Saoiabi Belkheir Hammouti Fatima-Ezzahra Maarouf Hind Khalil Khalil Azzaoui Khalil Azzaoui Mariam Khalil Moulay Hfid Youssoufi Othman Hamed Sanaa Saoiabi Sergey Shityakov Shehdeh Jodeh