scholarly journals Pengaruh Reagen Pelindian pada Sintesis ZnO dari Debu Tungku Busur Listrik

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Widi Astuti ◽  
Agus Haerudin ◽  
Istihanah Nurul Eskani ◽  
Aulia Pertiwi Tri Yuda ◽  
Fajar Nurjaman ◽  
...  

ZnO nanoparticle was synthesized by a simple hydrometallurgical method using raw material of electric arc furnace dust (EAFD),which is a solid waste in the stainless steel industry. Electric arc furnace dust contains 68.81% Zn in the form of zincite (ZnO) and simonkolleite (H10Cl2O9Zn5). The synthesis was carried out in two main steps, i.e., leaching and alkaline precipitation. In this study, the effect of leaching reagent, leaching temperature, and leaching reagent concentration on the percent extraction of Zn in the leaching process from electric arc furnace dust and the characteristics of the resulting ZnO product were studied. The experimental results showed that leaching reagent of acetic acid gives the highest percent extraction of Zn. The results also showed that the increase of temperature and acid concentration could improve the Zn extraction percentage. At 2M acid concentration, Zn extraction percentage already achieved 100%; hence the process is independent of temperature. The ZnO product has a purity of 96%. The XRD data confirmed the nano sizes of the ZnO product. A B S T R A KZnO nanopartikel disintesis dengan metode hidrometalurgi sederhana menggunakan bahan baku berupa debu tungku busur listrik yang merupakan limbah padat industri baja tahan karat. Debu busur listrik mengandung 68,81% Zn dalam bentuk zincite (ZnO) dan simonkolleite (H10Cl2O9Zn5). Proses sintesis dilakukan dalam dua tahap utama yaitu pelindian dan pengendapan alkali. Pada penelitian ini dipelajari pengaruh reagen pelindian, suhu pelindian, dan konsentrasi reagen pelindian pada proses pelindian terhadap persen ekstraksi Zn dari debu tungku busur listrik dan karakteristik produk ZnO yang dihasilkan. Hasil percobaan menunjukkan bahwa asam asetat adalah reagen pelindian yang memberikan persen ekstraksi Zn tertinggi. Hasil percobaan juga menunjukkan bahwa semakin tinggi suhu dan konsentrasi asam yang digunakan, maka semakin meningkat persen ekstraksi Zn yang diperoleh. Tetapi pada konsentrasi asam 2M, suhu pelindian tidak terlalu berpengaruh karena dengan konsentrasi asam asetat 2M pada semua kondisi suhu pelindian, persen ekstraksi Zn yang diperoleh adalah 100%. Hasil pelindian menggunakan asam asetat pada kondisi optimum menghasilkan produk ZnO dengan kemurnian sekitar 96%. Data XRD juga menunjukkan bahwa ZnO yang terbentuk memiliki ukuran nano.

2019 ◽  
Vol 8 (6) ◽  
pp. 5504-5514 ◽  
Author(s):  
Vanessa S. Silva ◽  
Juliana S. Silva ◽  
Bruno dos S. Costa ◽  
Clayton Labes ◽  
Rosane M.P.B. Oliveira

2017 ◽  
Vol 6 (3) ◽  
Author(s):  
Katya Brunelli ◽  
Pietrogiovanni Cerchier ◽  
Renato Bonora ◽  
Manuele Dabalà

AbstractIn this work, nanoparticles of ZnO and zero-valent Fe were sonochemically synthesised using a solution produced from electric arc furnace dust leaching as raw material. The leaching was previously carried out using ultrasound with various concentrations of sulphuric acid. The resulting solutions contained, in addition to varying amounts of Zn and Fe, elements such as Cr, Mn, Mg, Ca, and Si. Two methods were developed, one for Fe and one for ZnO, to obtain the nanoparticles and to avoid the precipitation of the additional elements during the nanoparticle production. The synthesis of ZnO nanoparticles was performed through the formation of a precursor by sonochemical reaction with NaOH, and the thermal decomposition of this precursor by heating in furnace. The production of Fe nanoparticles involved the precipitation of FeOOH, the dissolution of FeOOH in HCl solution, and the ultrasound-assisted reduction of the iron ions with NaBH


2019 ◽  
Vol 211 ◽  
pp. 1375-1388 ◽  
Author(s):  
Angélica Lozano-Lunar ◽  
Pedro Raposeiro da Silva ◽  
Jorge de Brito ◽  
José María Fernández ◽  
José Ramón Jiménez

Author(s):  
Galal Fares ◽  
Abdulaziz I. Al-Negheimish ◽  
Fahad M. Al-Mutlaq ◽  
Abdulrahman M. Alhozaimy ◽  
M. Iqbal Khan

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