Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

Kinetic and Isotherm Studies of Sewage Sludge Biochar on Ammonium Solution

Version 1 : Received: 17 December 2020 / Approved: 18 December 2020 / Online: 18 December 2020 (11:50:13 CET)
Version 2 : Received: 24 December 2020 / Approved: 24 December 2020 / Online: 24 December 2020 (13:50:11 CET)

How to cite: Ahmad Sohaimi, K.S.; Shyang, O.C.; Iberahim, N.I.; Mohamed, A.R.; Zainol, N.A. Kinetic and Isotherm Studies of Sewage Sludge Biochar on Ammonium Solution. Preprints 2020, 2020120458 (doi: 10.20944/preprints202012.0458.v2). Ahmad Sohaimi, K.S.; Shyang, O.C.; Iberahim, N.I.; Mohamed, A.R.; Zainol, N.A. Kinetic and Isotherm Studies of Sewage Sludge Biochar on Ammonium Solution. Preprints 2020, 2020120458 (doi: 10.20944/preprints202012.0458.v2).

Abstract

Sewage sludge was utilized into biochar using the slow pyrolysis method. The biochar was then being used for ammonium removal. The sewage sludge biochar was produced at temperature of 550°C, 600°C, 650°C, 700°C and 750°C. A few characterization tests were carried out to study about the physical and chemical properties of the biochar. For instance, moisture and ash content analysis, FTIR spectroscopy, pH Zero Point Charge, biochar yield and SEM. As the pyrolysis temperature increased, the moisture content of SSB decreased while the ash content increased. The FTIR spectra of sewage sludge biochar showed that there were various organic functional groups on the surface of the biochar which were responsible for ammonium adsorption. Furthermore, through pH Zero Point Charge analysis, pH 7.0 was the most optimum pH for the adsorption test of ammonium. The optimum adsorbent dosage was 0.01g while optimum contact time was 150 minutes. Furthermore, 1.2ppm was the most optimum concentration for adsorption process. Based on the result of the characterization tests, SSB700 was the most effective biochar for ammonium adsorption. Based on the result of kinetic and isotherm analysis, the adsorption of ammonium ions usign sewage sludge biochar was a monolayer chemisorption process.

Subject Areas

ammonium; adsorption; sewage sludge; kinetic; isotherm

Comments (1)

Comment 1
Received: 24 December 2020
Commenter: KHAIRUNISSA SYAIRAH AHMAD SOHAIMI
Commenter's Conflict of Interests: Author
Comment: 1. Adding new author as author number 5
noor ainee zainol
[email protected]
2. automative engineering change to biomedical and chemical engineering
3. article title has changed to Kinetic and Isotherm Studies of Sewage Sludge Biochar on Ammonium Solution
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