Valorization of Date Palm By-Products from some Cultivars: Environmental Application

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

This study investigates the use of agricultural date palm by-products (leafy fronds and empty fruit bunchs of three cultivars Ghars, Degla and Takermost) as sustainable, low-cost biosorbents for the removal of methylene blue dye from aqueous solutions. The research encompasses chemical modifications—using KOH and H₂SO₄ treatments—of the adsorbent materials, their physicochemical characterization, and systematic adsorption experiments to elucidate the key factors influencing adsorption efficiency and mechanisms. Among the modifications, KOH treatment notably enhanced the adsorption capacities, with maximum capacity reaching approximately 4.48 mg/g and dye removal efficiency exceeding 99%. This was linked to the increased surface functional groups and porosity, as confirmed by FTIR, XRD, and SEM analyses. Adsorption was affected by pH, temperature, contact time, and initial concentration, adapting to the Freundlich and Temkin isotherm models, indicative of heterogeneous and cooperative adsorptive interactions. Kinetic analyses consistently aligned with a pseudo-second-order model. Thermodynamic studies revealed spontaneous and exothermic adsorption under ambient conditions. The multistep adsorption mechanism encompasses surface adsorption, external film diffusion, and intraparticle diffusion, which are influenced by the adsorbent type, chemical modification, and dye concentration. It was observed that there are differences among the palm cultivars Degla, Ghars, and Takermost, highlighting the impact of cultivar variation on adsorption performance Bioadsorptives membranes were prepared from KOH-modified empty fruit bunch biomass (Ghars cultivar) combined with sodium alginate for use in treating drainage water in the region between Said Otba and Ain El Beida in the Wilaya of Ouargla. These membranes effectively reduced the biochemical oxygen demand by 50%, the chemical oxygen demand by 23.3%, and the total suspended solids by 36%

روابط وملفات

التعريف والنوع

رقم الوثيقة

0b71bfcc-9e7d-4a12-8438-7ca6328f37c8

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل دكتوراة

نوع الملف

pdf text

أسماء الملفات

1094134_1.pdf

بيانات النشر

ترجمة العنوان

Valorization des sous-produits de certaines variétés de palmier dattier: Application environnementale

ألقاب المؤلفين

[{"name_ar":"Hind Bouafia","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"Mohamed Lamine Sekirifa","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"Youcef Touil ","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

Valorization of Date Palm By-Products from some Cultivars: Environmental Application

المحتوى والصفحات

عدد الصفحات

0

كلمات الباحثين

Date palm biomass Cultivar Chemical modification Adsorption Methylene blue removal Bioadsorptive membrane

إشراف وإعداد

الإشراف

Mohamed Lamine Sekirifa, Youcef Touil

الإعداد

Hind Bouafia

الاقتباسات الببليوغرافية