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Journal : International Journal of Engineering, Science and Information Technology

Synthesis Carboxyl Methyl Cellulose (CMC) from Rice Straw (Oryza Sativa L.) Waste Masrullita, Masrullita; Nurlaila, Rizka; Zulmiardi, Zulmiardi; Safriwardy, Ferri; Auliani, Auliani; Meriatna, Meriatna
International Journal of Engineering, Science and Information Technology Vol 2, No 1 (2022)
Publisher : Department of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (553.889 KB) | DOI: 10.52088/ijesty.v2i1.200

Abstract

Rice straw is one of material containing cellulose to produce Carboxymethyl Cellulose (CMC). CMC is a non toxic polysaccharide that produces from cellulose that widely used in the pharmaceutical, food, textile, detergent, and cosmetic products industries. There are two stages usually use to produce CMC which are mercerization and esterification processes. Rice straw waste is one of the materials to produce CMC, it has a cellulose content of 37.7%, hemi-cellulose 21.99%, and lignin 16.62 %.  BPS Aceh shown that the total rice harvested area was 310.01 hectares, with a total production of 1.71 million tons, and rice produced at 982.57 thousand ton. This study aims to reduce waste and environmental pollution caused by rice straw and collects information of rice straw as a basic material to produce of carboxymethyl cellulose and to increase the economic value of rice straw.  The effects of various wieght parameters sodium monochloroacetate on chemical properties of CMC that produce from rice straw were investigated in this research. Rice straw was collected from a rice field in Nisam, North Aceh. The research conducted by synthesizing 5 grams rice straw for 5.5 hours using NaOH and Sodium Monochloroacetate solutions. With variations weight of sodium monochloroacetate are 5,6,7,8 and 9 grams. The characterization of CMC was carried out by Fourier Transform Infrared (FTIR), CMC yield, DS, Viscosity, water content, pH. The result shows that addition of sodium monochloroacetate was significant factors influence the chemical properties on CMC. The CMC that produced in this study achieved to National Indonesia Standard (SNI).
Optimization Study Of Time And Mass Of Ketapang Fruit Shell Biosorbent in the Methylene Blue Batch Adsorption Process Meriatna, Meriatna; Zulmiardi, Zulmiardi; Nurlaila, Rizka; Suryati, Suryati; Hasfita, Fikri; Faisal, Faisal
International Journal of Engineering, Science and Information Technology Vol 5, No 3 (2025)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v5i3.1000

Abstract

Ketapang fruit shell (Terminalia catappa) has shown potential as a low-cost, eco-friendly biosorbent for removing synthetic dyes from aqueous solutions. This study aimed to determine the optimum conditions for contact time and adsorbent mass of ketapang fruit shell in the adsorption of methylene blue dye. The research involved several stages: preparation and chemical activation of the fruit shells, batch adsorption experiments, analysis of adsorption capacity and efficiency, and optimization using the Response Surface Methodology (RSM). Characterization of the adsorbent was conducted using UV-Visible spectroscopy, Fourier Transform Infrared (FTIR) spectrosco-py, and Scanning Electron Microscopy (SEM) to analyze functional groups and surface morphology. The RSM approach was employed to evaluate the interaction effects of contact time and adsorbent mass, as well as to predict the optimal conditions for maximum dye re-moval. The optimum adsorption conditions were achieved at a contact time of 39.15 minutes and adsorbent mass of 0.416 g, resulting in an adsorption capacity of 1.935 mg/g and 100% removal efficiency. The regression model obtained from RSM was: Y= 35.13437  + 334.35597A – 1.67299B + 0.088354AB – 402.98656A² + 0.018207B², with  a coefficient of determination R² = 0.7857 (78.57%), indi-cating a good model fit. Furthermore, the adsorption behavior followed the Freundlich isotherm model, supported by an R² value of 0.787 (78.7%), suggesting multilayer adsorption on a heterogeneous surface. These findings confirm the effectiveness of ketapang fruit shell as a promising adsorbent for methylene blue removal in wastewater treatment applications.