Md. Fazlul Bari, Assoc. Prof. Dr.
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/34387
2024-03-29T05:40:54ZPalm Ash as an Alternative Source for Silica Production
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/68615
Palm Ash as an Alternative Source for Silica Production
Faizul, Che Pa; Abdullah, Chik; Md. Fazlul, Bari
Agricultural wastes such as palm ash and rice husk have a possibility to be used as a useful renewable source for the production of 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 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 the citric acid leaching method under the optimum extracting conditions with 700 °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 %.
Link to publisher's homepage at https://www.matec-conferences.org/
2016-01-01T00:00:00ZPhotoelectrocatalytic activity of Zn-loaded RGO-TiO₂ composite coatings on mild steel substrate via DC electrochemical co-deposition
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/35136
Photoelectrocatalytic activity of Zn-loaded RGO-TiO₂ composite coatings on mild steel substrate via DC electrochemical co-deposition
Rakibul, Hasan; Chin Wei, Lai; Sharifah Bee, Abd Hamid; Wan Jeffrey, Basirun; Zainovia, Lockman; Md. Fazlul, Bari, Assoc. Prof. Dr.
The photoelectrocatalytic activity of Zn-loaded reduced graphene oxide-titania (RGO-TiO₂) composite coatings on mild steel substrate was investigated in detail. Zn-loaded RGO-TiO₂ composite films were prepared by using DC electrochemical co-deposition technique onto mild steel substrate in an acid-sulphate bath electrolyte. The cyclic voltammetry and photocurrent response studies showed that the Zn-loaded RGO-TiO₂ films have improved photoelectrocatalytic performance. The embedding of metallic Zn into the RGO-TiO₂ promoted an effective charge carriers separation by minimizing the recombination losses. In this manner, metallic Zn will act as efficient photo-induced electron acceptors from the bulk of RGO-TiO₂ film. Thus, the transportation of the electrons from the working electrode to the counter electrode was improved significantly.
Link to publisher's homepage at http://epjap.epj.org
2014-02-01T00:00:00ZExtraction of silica from palm ash using organic acid leaching treatment
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/33603
Extraction of silica from palm ash using organic acid leaching treatment
Faizul, Che Pa; Abdullah, Chik, Prof. Madya Dr.; Md Fazlul, Bari, Dr.; Noorina Hidayu, Jamil
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%.
Link to publisher's homepage at http://www.ttp.net/
2014-01-01T00:00:00ZExtraction of silica from palm ashvia citric acid leaching treatment
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/33041
Extraction of silica from palm ashvia citric acid leaching treatment
Faizul, Che Pa; Abdullah, Chik, Prof. Madya Dr.; Md Fazlul, Bari, Dr.
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 [1].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%.
Link to publisher's homepage at www.aensiweb.com
2013-10-01T00:00:00Z