Determination of Optimum Conditions for the Production of Activated Carbon Derived from Separate Varieties of Coconut Shells

Activated carbons were produced from coconut shells of tall and dwarf tree varieties. The activated carbon from the tall tree variety was initially synthesized using 1 M concentration of each of ZnCl2, H3PO4, and KOH solutions. From the adsorptive tests conducted using methylene blue solution, the activated carbon produced with H3PO4 gave the best absorbance and adsorptive performance. Coconut shells of dwarf tree variety were then obtained and treated with same mass of coconut shells of the tall tree variety using varied concentrations of the acid in order to determine whether the optimum concentration and temperature for producing carbon black from the coconut shells are distinct or similar for both varieties. The process was also modelled using the Differential Response Method (DRM) in order to determine the yields and adsorptive performances of the activated carbons by varying the carbonization temperature and concentration. The results from experiment and the developed mathematical model were both found to be in agreement giving the optimum concentration of phosphoric acid and pH for producing activated carbon to be 0.67 M and 2.07 for the tall tree variety and 1 M and 1.98 for the dwarf variety at optimum temperatures in the range of 450–575°C and 575°C, respectively

Sustainable utilization of value-added products from the catalytic and non-catalytic pyrolysis of motor car scrap tire: suitability of produced char for energy generation and sugar mill wastewater treatment

Please read abstract in the article.Covenant University, Ota, Nigeria.https://www.elsevier.com/locate/sciafhj2024Chemical EngineeringSDG-07:Affordable and clean energySDG-09: Industry, innovation and infrastructur

Surface roughness of ternary blends: Polypropylene/chitosan/sisal fiber membranes

The rough morphological structure of ternary blend composite membranes was studied. The surface roughness of the composites were analysed. Recurrent topographies and the reliance of length-scale on rough surfaces were established in the analysis done by scanning probe electron microscopy. The membranes with increasing amount of sisal fibre exhibited higher roughness surface. � 2020 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/bync- nd/4.0) Selection and Peer-review under responsibility of the scientific committee of the International Conference & Exposition on Mechanical, Material and Manufacturing Technolog

Evaluation of chitosan/sisal fiber/polyethylene membranes

Composites of ternary blend of chitosan/sisal fiber/high density polyethylene, were prepared by using the Rheomixer, followed by hot press, in order to form dense microfiltration membranes. The effective operation of the membranes was tested via the utilization of distilled water. The structural arrangement of the membranes was examined with the aid of using scanning electron microscopy (SEM). The chemical structure and phase identification of the membranes were examined using attenuation total reflectioninfrared spectroscopy (ATR-IR) and X-ray diffraction (XRD), respectively. The water permeability of the composite membranes is dependent on how rough the surface is, the sizes of pores and the membrane porosity. The membranes with highest amount of sisal fiber, gave highest flux of 1.4 m3/m2/h