Removal of Iron and Manganese from Natural Groundwater by Continuous Reactor Using Activated and Natural Mordenite Mineral Adsorption

2017 International Conference on Advanced Environmental Engineering

生态环境科学

Zevi, Y.^1 ; Dewita, S.^1 ; Aghasa, A.^1,2 ; Dwinandha, D.^1

Department of Environmental Engineering, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology (ITB), Jalan Ganesha 10, West Java, Bandung

40132, Indonesia^1

Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro. Nam-Gu. Pohang, Gyeongbuk

37673, Korea, Republic of^2

关键词: Constant flow rates;    Continuous reactors;    Manganese concentration;    Natural groundwater;    Natural mordenite;    Physical activation;    Regeneration treatment;    Removal efficiencies;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/111/1/012016/pdf
DOI  :  10.1088/1755-1315/111/1/012016

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Mordenite minerals derived from Sukabumi natural green stone founded in Indonesia was tested in order to remove iron and manganese from natural groundwater. This research used two types of adsorbents which were consisted of physically activated and natural mordenite. Physical activation of the mordenite was carried out by heating at 400-600°C for two hours. Batch system experiments was also conducted as a preliminary experiment. Batch system proved that both activated and natural mordenite minerals were capable of reducing iron and manganese concentration from natural groundwater. Then, continuous experiment was conducted using down-flow system with 45 ml/minute of constant flow rate. The iron & manganese removal efficiency using continuous reactor for physically activated and natural mordenite were 1.38-1.99%/minute & 0.8-1.49%/minute and 2.26%/minute & 1.37-2.26%/minute respectively. In addition, the regeneration treatment using NH4Cl solution managed to improve the removal efficiency of iron & manganese to 1.98%/minute & 1.77-1.90%/minute and 2.25%/minute & 2.02-2.21%/minute on physically activated mordenite and natural mordenite respectively. Subsequently, the activation of the new mordenite was carried out by immersing mordenite in NH4Cl solution. This chemical activation showed 2.42-2.75%/minute & 0.96 - 2.67 %/minute and 2.66 - 2.78 %/minute & 1.34 - 2.32 %/minute of iron & manganese removal efficiency per detention time for chemically activated and natural mordenite respectively.