DOI : https://doi.org/10.18517/ijaseit.5.6.593

Level Decreasing Kinetics Model of Heavy Metal Contents in the Coal Stockpile Wastewater with Electrocoagulation

Rusdianasari Rusdianasari (1), Anerasari Meidinariasty (2), Indah Purnamasari (3)
(1) Chemical Engineering Department, State Polytechnic of Sriwijaya, Palembang 30139, Indonesia
(2) Chemical Engineering Department, State Polytechnic of Sriwijaya, Palembang 30139, Indonesia
(3) Chemical Engineering Department, State Polytechnic of Sriwijaya, Palembang 30139, Indonesia
Fulltext View | Download
How to cite (IJASEIT) :
Rusdianasari, Rusdianasari, et al. “Level Decreasing Kinetics Model of Heavy Metal Contents in the Coal Stockpile Wastewater With Electrocoagulation”. International Journal on Advanced Science, Engineering and Information Technology, vol. 5, no. 6, Dec. 2015, pp. 387-91, doi:10.18517/ijaseit.5.6.593.
Citation Format :
Electrocoagulation is one of methods used to treat wastewater in the coal stockpile without using coagulants. Characteristics of wastewater observed are heavy metals (Fe and Mn) and pH.  The decrease in the heavy metals content and the increase in the pH of this wastewater treatment process will then be proposed in the adsorption kinetics model. The influence of  variations in currents and processing time were observed. The time variation of the adsorption process were 60 to 120 minutes with current variations from 1.3 to 3.0 Ampere at a fixed 12 voltages. The results obtained that the Fe content could be decreased to 0.03 ppm at 90 minutes while the content of Mn was decreased to 0.01 ppm at the same time. The increase in pH (7.11) was achieved when applying 2.5 A current at 90 minutes process time. The results obtained from the electrocoagulation method was then proposed in the model of the Langmuir isotherm adsorption kinetics and Freundlich isotherm.

Authors who publish with this journal agree to the following terms:

    1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
    2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
    3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).