Leaching and Kinetic Modeling of Malaysian Low Grade Manganese Ore in Sulfuric Acids

Ismail, Suhaina; Hussin, Hashim; Hashim, Syed Fuad Saiyid; Abdullah, Norazharuddin Shah

doi:10.4028/www.scientific.net/amr.1133.629

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…Table 3 displays the sequence of reductive leaching. Leaching process set up was slightly modified from Suhaina et al [4]. Leaching experiment was conducted in 250 mL three neck flask on stirring hot plate.…”

Section: Reductive Leaching Proceduresmentioning

confidence: 99%

“…Despite of its increment demand, Mn faces a shortage supply due to depletion of high grade Mn ore [3]. As an alternative, low grade Mn ore (LGMO) has been utilized to fulfill industries demand [4]. In this case, LGMO can be reduced using varieties of reducing agents such as oxalic acid [5], hydrogen peroxide [6], sodium sulfide [7], carbohydrates [8] and biomass such as cornstalk [9].…”

Section: Introductionmentioning

confidence: 99%

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Reductive Leaching of Low Grade Manganese Ore (Lgmo) Using Glucose in Sulphuric Acid: Optimization Condition Using Response Surface Methodology

Muthalib

Abdullah

Ismail

2018

AEJ

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Manganese (Mn) is an important metal in producing a good quality steel, that the total Mn consumption in this industry reaches 85 to 90%. Despite of this huge demand, Mn faces a shortage supply due to depletion of high grade Mn ore. As an alternative, low grade manganese ore (LGMO) can be utilized to fulfill the industry demand. The aim of this work is to determine the optimum condition of the reductive leaching process of LGMO using Response Surface Methodology (RSM). The design of experiment (DOE) was made using RSM by Central Composite Design (CCD) with 22 and 3 central points. In this work, the effect of variables such as sulphuric acid concentration (X1) and weight of glucose (X2) were examined. The experimental data obtained from Analysis of Variance (ANOVA) were analyzed. Subsequently, the most significant variable was identified and fitted into a quadratic model. It is found that the interaction between sulphuric acid concentration and amount of glucose (X1X2) is the most important factor in manganese (Mn) extraction. The optimum leaching condition is obtained at 2.5 M sulphuric acid concentration and 2 g weight of glucose at 60 minutes leaching time. Within this experimental condition, a high level of Mn extraction ratio at 88.97% is achieved.

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Section: Reductive Leaching Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reductive Leaching of Low Grade Manganese Ore (Lgmo) Using Glucose in Sulphuric Acid: Optimization Condition Using Response Surface Methodology

Muthalib

Abdullah

Ismail

2018

AEJ

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“…After then, there as only small change of crystallinity. It might be said that acid and water molecules are unable to penetrate and disrupt the cellulose structure and only amorphous portion can react after longer period reaction time [2] [3][4]. This research is to prove whether it can break the cellulose structure of BSD or not by using dilute sulfuric acid.…”

Section: Introductionmentioning

confidence: 99%

Effects of Sulphuric Acid and Speed Rotation on Hydrolysis of Bamboo Sawdust

Zahir

Abdullah

Jabit

et al. 2022

KEM

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Bamboo saw dust (BSD) as reducing agent in low-grade manganese ore leaching is used, and therefore the performance of cellulose hydrolysis will affect the percent recovery of Mn ore. This work is studies the effect of sulphuric acid and speed rotation on hydrolysis of BSD. The crytallinity of BSD were investigated. The parameters considered in this work are sulphuric acid concentration and the speed rotation by using 23 +3 factorial design. The significant factor, main and interaction effect were investigated based on Analysis of Variance obtained from statistical software. It shows that the sulphuric acid concentration is the main factors that affects the percentercent crystallinity compared to rotation speed. It is proved by the DOE analysis and supported by the crystallinity analysis of BSD before and after hydrolysis process. The optimum condition that can be suggested to obtain low percent crystallinity are when the sulphuric acid concentration and speed rotation at 4M and 400 rpm respectively. This indicates that reducing agent can be obtained from BSD in mild condition of hydrolysis due to decrement of cellulose crystallinity

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Synthesis and kinetic modeling of manganese carbonate precipitated from manganese sulfate solution

Ali

Iqbal

Shah

et al. 2020

Chemical Engineering Communications

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Leaching and Kinetic Modeling of Malaysian Low Grade Manganese Ore in Sulfuric Acids

Cited by 5 publications

References 10 publications

Reductive Leaching of Low Grade Manganese Ore (Lgmo) Using Glucose in Sulphuric Acid: Optimization Condition Using Response Surface Methodology

Reductive Leaching of Low Grade Manganese Ore (Lgmo) Using Glucose in Sulphuric Acid: Optimization Condition Using Response Surface Methodology

Effects of Sulphuric Acid and Speed Rotation on Hydrolysis of Bamboo Sawdust

Synthesis and kinetic modeling of manganese carbonate precipitated from manganese sulfate solution

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