Extraction of Tin (Sn) from Solder Dross by Using Citric Acid Leaching Treatment

2015 ◽  
Vol 754-755 ◽  
pp. 571-575
Author(s):  
Syarifah Aminah Ismail ◽  
Noorina Hidayu Jamil ◽  
Kamarudin Hussin ◽  
Mohd Arif Anuar Mohd Salleh
Keyword(s):  
Citric Acid ◽  
Acid Concentration ◽  
Acid Leaching ◽  
Suggested Method ◽  
Solution Temperature ◽  
Stirring Time ◽  
Temperature Recovery

Solder dross containing Sn, Ni, Cu, Zn, Fe and other impurities was leached with 0.1-1.0 M citric acid at 60 °C for 24 hours stirring times. Parameter affecting the tin recovery of suggested method such as acid concentration, stirring time and temperature were investigated. Results obtained revealed that the optimum leaching parameter were achieved using 250ml of citric acid (C6H8O7) and 10 acid/g drossfor 24 hours at 60°Cof solution temperature. Recovery of tin from solder dross was 99.0%.

Removal of Iron (Fe) in Rice Husk via Citric Acid Leaching Treatment

2016 ◽  
Vol 857 ◽  
pp. 540-546
Author(s):  
Nur Haslinda Mohamed Muzni ◽  
Noorina Hidayu Jamil ◽  
Cheow Keat Yeoh
Keyword(s):  
Citric Acid ◽  
Acid Concentration ◽  
Rice Husk ◽  
Agricultural Waste ◽  
Acid Leaching ◽  
Industrial Applications ◽  
Solution Temperature ◽  
Process Conditions ◽  
Optimum Conditions ◽  
Stirring Time

Rice husk (RH) is an agricultural waste which has been utilized as useful renewable resources to produce energy with high-purity silica (SiO2) contents. With such a large availability of rice husk, it becomes economical to industrial applications. This paper was study about the removal of iron from rice husk in aqueous citric acid by using acid leaching treatment. The parameters chosen were reaction temperature, stirring speed, acid concentration and stirring time. The optimum conditions for the maximum removal of 0.14% of iron with citric acid leaching treatment were observed at solution temperature of 70°C; thermostat magnetic stirrer hotplate, 150 W; acid concentration 0.1M-1.0M; stirring time 6h-12h. This method resulted the removal efficiency of iron increasing considerably with the increasing leach C2H7O8 acid concentration. The optimization of the process conditions of the citric acid leaching treatment under the optimum conditions with 6h of stirring time and acid concentration of 1.0M were conducted to remove the metallic impurities of Fe from husks and shows remarkable result.

Extraction of Tin (Sn) from Solder Dross by Using Hydrochloric Acid Leaching Treatment

2015 ◽  
Vol 754-755 ◽  
pp. 567-570
Author(s):  
Syarifah Aminah Ismail ◽  
Noorina Hidayu Jamil ◽  
Kamarudin Hussin ◽  
Mohd Arif Anuar Mohd Salleh
Keyword(s):  
Aqueous Solution ◽  
Particle Size ◽  
Hydrochloric Acid ◽  
Acid Concentration ◽  
Acid Leaching ◽  
Experimental Results ◽  
Solution Temperature ◽  
Hydrochloric Acid Leaching ◽  
Stirring Time ◽  
Acid Aqueous Solution

This project deals with the experimental results of leaching of Sn from solder dross by means of leaching using different concentration of hydrochloric acid (HCl). Solder dross was sieved to obtain a mean particle size of 75 μm. The solder dross powder obtained was leached by using HCl acid aqueous solution. To optimize the parameter required for recovery of Sn from solder dross, initially the bench scale studies were carried out using varying acid concentration, stirring time and temperature. The experimental indicate that 98.7% of Sn was leached out from solder dross using 0.1M of HCl, 24 hours of stirring time at60°C solution temperature.

scholarly journals Citric acid leaching process for removal of iron (Fe) from rice husk

2021 ◽  
Vol 2080 (1) ◽  
pp. 012016
Author(s):  
Faizul Che Pa ◽  
Abdullah Chik ◽  
Hasan Zuhudi Abdullah
Keyword(s):  
Citric Acid ◽  
Rice Husk ◽  
Agricultural Waste ◽  
Combustion Process ◽  
Acid Leaching ◽  
Earth Metal ◽  
Solution Temperature ◽  
Leaching Process ◽  
Stirring Time ◽  
High Level

Abstract Rice husk containing the highest amount composition of silica (SiO2) compared with other agricultural waste. With such a large availability of rice husk, it becomes economical to industrial by the implementation concept of sustainability beside decompose the rice rusk into ash. The extraction of silica and elimination of metallic element, such as iron (Fe) from rice husk (RH) was treated by leaching process. With this, the RH can be utilized to produce various types of useful renewable resources such as silica (SiO2). Using the organic acid as leaching solution is more eco-friendly instead using the inorganic acid that classified as very dangerous chemical due to the high level of hazard. The treated and untreated rice husk ash characterizes using scanning electron microscopy and X-ray diffraction spectroscopy. The morphology of treated rice husk shows the tubular aggregate due to the presence of alkaline earth metal such as Ca and Mg. Under the optimum condition with 90 °C solution temperature, 60 minutes stirring time, 3% of citric acid and calcination temperature of 800 °C for 3 hours, amorphous silica with more than 78% was prepared via citric acid leaching treatment and combustion process.

Extraction of Silica from Palm Ash Using Citric Acid Leaching Treatment: Preliminary Result

2013 ◽  
Vol 795 ◽  
pp. 701-706 ◽  
Author(s):  
Che Pa Faizul ◽  
C. Abdullah ◽  
B. Fazlul
Keyword(s):  
Citric Acid ◽  
Rice Husk ◽  
Acid Leaching ◽  
Strong Acid ◽  
Agricultural Wastes ◽  
Raw Material ◽  
Solution Temperature ◽  
Acid Solutions ◽  
Silica Materials ◽  
Metallic Impurities

Large quantities of agricultural wastes such as palm ash and rice husk are found throughout Malaysia, have a possibility to be used as a usefully renewable source for production of energy and silica (SiO2). Extensive researches have been carried out to extract silica from agricultural wastes such as rice husk, due to silica as a useful raw material for industrial application. In the previous studies, the strong acid leaching treatment was carried out to remove metallic impurities and organics contained in rice husk. Since leaching treatment is a proper route to extract the silica, sulphuric acid (H2SO4), hydrochloric acid (HCl) and nitric acid (HNO3) solutions are currently used in leaching treatment to prepare silica materials [. A strong acid leaching treatment, however, is significantly hazardous to the environment and people. In this study, the weaker acid, citric acid solutions were used to replace strong acid in leaching processes. Preliminary results showed that silica can be extracted from palm ash using citric acid leaching treatment under the optimum extracting conditions with 70°C of solution temperature, 60 minutes of reaction time and concentration of citric acid of more than 2%. The purity of silica extracted is more than 90%.

scholarly journals Extraction of Zinc and Manganese from Alkaline and Zinc-Carbon Spent Batteries by Citric-Sulphuric Acid Solution

2010 ◽  
Vol 2010 ◽  
pp. 1-13 ◽  
Author(s):  
Francesco Ferella ◽  
Ida De Michelis ◽  
Francesca Beolchini ◽  
Valentina Innocenzi ◽  
Francesco Vegliò
Keyword(s):  
Citric Acid ◽  
Sulphuric Acid ◽  
Acid Concentration ◽  
Acid Leaching ◽  
Sulphuric Acid Solution ◽  
Operating Conditions ◽  
Pulp Density ◽  
Leaching Tests ◽  
Citric Acid Concentration ◽  
Sulphuric Acid Concentration

The paper is focused on the recovery of zinc and manganese from alkaline and zinc-carbon spent batteries. Metals are extracted by sulphuric acid leaching in the presence of citric acid as reducing agent. Leaching tests are carried out according to a24full factorial design, and empirical equations for Mn and Zn extraction yields are determined from experimental data as a function of pulp density, sulphuric acid concentration, temperature, and citric acid concentration. The highest values experimentally observed for extraction yields were 97% of manganese and 100% of zinc, under the following operating conditions: temperature40∘C, pulp density 20%, sulphuric acid concentration 1.8 M, and citric acid 40 gL-1. A second series of leaching tests is also performed to derive other empirical models to predict zinc and manganese extraction. Precipitation tests, aimed both at investigating precipitation of zinc during leaching and at evaluating recovery options of zinc and manganese, show that a quantitative precipitation of zinc can be reached but a coprecipitation of nearly 30% of manganese also takes place. The achieved results allow to propose a battery recycling process based on a countercurrent reducing leaching by citric acid in sulphuric solution.

Extraction of Silica from Palm Ash Using Organic Acid Leaching Treatment

2013 ◽  
Vol 594-595 ◽  
pp. 329-333 ◽  
Author(s):  
Che Pa Faizul ◽  
Abdullah Chik ◽  
Md. Fazlul Bari ◽  
Hidayu Jamil Noorina
Keyword(s):  
Citric Acid ◽  
Rice Husk ◽  
Acid Leaching ◽  
Strong Acid ◽  
Agricultural Wastes ◽  
Raw Material ◽  
Environmentally Benign ◽  
Solution Temperature ◽  
Strong Acids ◽  
Metallic Impurities

Agricultural wastes such as palm ash and rice husk have a possibility to be used as a usefully renewable source for production of energy and silica (SiO2). Extensive researches have been carried out to extract silica from agricultural wastes such as rice husk, due to silica as a useful raw material for industrial application. In the previous studies, the strong acid leaching treatment was carried out to remove metallic impurities and organics contained in rice husk. A strong acid leaching treatment, however, is significantly hazardous to the environment and people [. In this study, the environmentally benign and economically effective process to produce SiO2 materials from palm ash has been established by using citric acid leaching, not the conventional strong acids. Results showed that silica can be extracted from palm ash using citric acid leaching treatment under the optimum extracting conditions with 70°C of solution temperature, 60 minutes of reaction time and concentration of citric acid of more than 2%. The purity of silica extracted is more than 90%.

scholarly journals Structural Analysis of Silica Extract from Banana Stems via Acid Leaching under Different Reaction Time

2019 ◽  
Vol 9 (1) ◽  
pp. 5858-5862
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Reaction Time ◽  
Citric Acid ◽  
Acid Concentration ◽  
Agricultural Waste ◽  
Acid Leaching ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

Production of silica from agricultural waste such as banana stems are mainly synthesized from acid leaching treatment. Citric acid (C6H8O7 ) was used as substitute for conventional hydrochloric acid (HCL) and sulphuric acid (H2SO4 ) because it is safer and less harmful to the human health. The main parameters in leaching treatment are leaching time and acid concentration. The acid concentration used was 1.0 mol/L of citric acid (C6H8O7 ) and leaching time of 30, 60 and 90 minutes, respectively. The leaching treatment produced 47.8% to 99.9% of extracted silica. The samples of extracted silica were characterized using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM).

Sign in / Sign up

Export Citation Format

Share Document