Chemistry Africa

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Removal of Turbidity from Domestic Wastewater Using Electrocoagulation: Optimization with Response Surface Methodology
Chemistry Africa - Tập 5 - Trang 123-134 - 2022
Million Ebba Bote, Wendesen Mekonin Desta
Turbidity is one part of the physical characteristics of wastewater that is highly observed in domestic wastewater. The electrocoagulation process is an effective method by applying only electric current with sacrificial electrodes for the removal of turbidity from domestic wastewater under the consideration of different operating parameters. In this study, current (0.03–0.09 A), pH (3–9), and rea...... hiện toàn bộ
MgAl-Layered Double Hydroxide: An Efficient Material for Adsorptive Removal of Methyl Orange from Aqueous Solutions
Chemistry Africa - Tập 6 - Trang 323-333 - 2022
Sallouha Toumi, Youssef Snoussi, Manef Abderrabba
There is an ever-growing global concern of water pollution and water scarcity. Numerous strategies are investigated within a holistic approach that includes water treatment using inorganic and composite adsorbents. In this context, MgAlCO3-layered double hydroxide (LDH) was synthesized by co-precipitation at pH 10 and characterized by XRD, FTIR, TGA, N2-adsorption–desorption and XPS. MgAlCO3-LDH w...... hiện toàn bộ
Optimization of Tunisian Olive Pomace Oil Esterification Using Response Surface Methodology
Chemistry Africa - Tập 2 Số 3 - Trang 497-506 - 2019
Narjess Hadhri, Ahmed Hichem Hamzaoui, Taı̈cir Ben Ayed, Taieb Saied
Experimental Design Methodology Applied to the Degradation of a Cytostatic Agent the Imatinib Mesylate Using Fenton Process
Chemistry Africa - Tập 2 Số 1 - Trang 103-111 - 2019
Fatma Ghrib, Taieb Saied, Nizar Bellakhal
Enhancing the Thermo-Mechanical Properties of Thermoplastic Starch Films Using Rice Straw Fibers as Reinforcement
Chemistry Africa - Tập 6 - Trang 2321-2329 - 2023
Tamene Simachew Zeleke, Fantahun Aklog Yihun, Misganaw Tegegne Ayana, Mulugeta Tesemma Kassa, Mekdes Fentabil Alemante
Nowadays, the need for biodegradable plastics is increasing because they are environmentally friendly and can replace petroleum-based non-degradable plastics that pollute the environment. Starch-based bio-plastics have huge potential to replace synthetic polymer-based plastics due to their economic and environmental advantages. However, the poor thermo-mechanical properties and high moisture sensi...... hiện toàn bộ
A Review on Ion-exchange Membranes Fouling and Antifouling During Electrodialysis Used in Food Industry: Cleanings and Strategies of Prevention
Chemistry Africa - Tập 3 - Trang 609-633 - 2020
Myriam Bdiri, Christian Larchet, Lasâad Dammak
During the last decades, the interest of using ion-exchange membranes (IEMs) in electrodialysis (ED) technologies has emerged in wastewater treatment, drinking water and process water production as well as food industry and more recently in processes of energy conversion and storage. Like in all membrane technologies, the problem of fouling is one of the limitative phenomena of IEM efficiency and ...... hiện toàn bộ
A Computational Exploration of Ammonia Adsorption on the Kaolinite Clay Surface
Chemistry Africa - Tập 4 - Trang 905-914 - 2021
Moussa Diawara, Mady Kamissoko, Seyfeddine Rahali, Drissa Samaké, Moussa Tamboura, Boubakar Diawara, Mahamadou Seydou
The adsorption mode of ammonia on the (001) surface of kaolinite was explored using the periodic DFT/PBE-D3 method. The thermodynamics and electronic properties such as adsorption energy, bond lengths and density of states were calculated to investigate the adsorption mechanism. Calculated adsorption energies were negative for ammonia-kaolinite complexes indicating a favorable exothermic process. ...... hiện toàn bộ
A Simple and Green Preparation Route of Waste Textile Based Photocatalytic Biochars for Pollution Removal
Chemistry Africa - Tập 6 - Trang 629-642 - 2023
Huseyin Gumus, Bulent Buyukkidan
The waste recycling is one of the smart methods to control the increasing demand for raw materials and environmental pollution. Photocatalytic biochars were prepared by carbonization of waste textiles that would not be reused in the industry. Virgin and FeCl2, H2SO4, H3PO4 impregnated waste samples were carbonized at 300–400 °C for varying times. The functional groups and crystal structure of bioc...... hiện toàn bộ
Assessment of Corrosion Resistance Potentials of Welded and Tempered UNS G10400 Carbon Steel in a Seawater Environment
Chemistry Africa - - 2024
Silas Oseme Okuma, Benjamin Ufuoma Oreko
Welded joints sometimes exhibit poor corrosion resistance due to variations in chemical composition at the weld surface, or heat-affected zone (HAZ) caused by induced stress, and microstructural changes. There is need to enhance weld corrosion resistance and the microstructural properties of such joints through post-weld tempering (PWT). In this study, the effect of PWT on the corrosion resistance...... hiện toàn bộ
Ferrocene–Functionalized Carbon Nanotubes: An Adsorbent for Rhodamine B
Chemistry Africa - Tập 2 - Trang 113-122 - 2018
Amal Rabti, Amira Hannachi, Hager Maghraoui-Meherzi, Noureddine Raouafi
It is well-known that direct discharges of dye-contaminated wastewaters generated from various industries (i.e., textile, cosmetics and food industries,…) cause severe effects on both aquatic environment and human health. Decontamination of dye-containing wastewaters using nanomaterials-based adsorbents such as carbon nanotubes is regarded as an interesting field of investigation to control these ...... hiện toàn bộ
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