Latest Issue
Study on Mechanical Structure Design for Plug-and-play Wheel Mobile Robot
Published: December 31,2023PI Controller for Velocity Controller Design based on Lumped Parameter Estimation: Simulation and Experiment
Published: December 31,2023Attitude Estimation by using Unscented Kalman Filter with Constraint State
Published: December 31,2023Characterization Study of Cambodian Natural Rubber and Clay Composites for Shock Absorption Floor Mat
Published: December 31,2023Selection of Observed Gridded Rainfall Data for different Analysis Purposes in Cambodia
Published: December 31,2023An Empirical Investigation of Gold Price Forecasting Using ARIMA Compare with LSTM Model
Published: December 31,2023Prediction of California Bearing Ratio with Soil Properties of Road Subgrade Materials in Cambodia
Published: December 31,2023Non-intrusive Load Monitoring Classification Based on Multi-Scale Electrical Appliance Load Signature
Published: December 31,2023Development of Control Framework Based on ROS Platform for a 3-Axis Gimbal
Published: December 31,2023MINERALOGICAL CHARACTERISTICS OF THE SIDOMULYO ZEOLITE AND THE KEDUNGBEDAH BENTONITE, GUNUNGKIDUL REGENCY AND BOYOLALI REGENCY, RESPECTIVELY, INDONESIA AND THEIR UTILIZATIONS AS HEAVY METAL ADSORBENTS
-
1. ITC
Received: January 21,2024 / Revised: Accepted: January 21,2024 / Published: June 01,2016
The Sidomulyo zeolitic and Kedungbedah bentonitic tuffs are respectively located in the Gunungkidul and the Boyolali regencies, Indonesia. The study of their mineralogical characteristics was primarily done. The petrographical analysis indicates that the Sidomulyo zeolitic or Kedungbedah bentonitic tuffs is composed of volcanic glass, quartz, plagioclase, and altered minerals. The XRD investigation reveals that the zeolite tuff contains clinoptilolite, mordenite, montmorillonite, plagioclase, quartz, and orthoclase whereas the bentonitic tuff contains montmorillonite, clinoptilolite, illite, dickite, and quartz. The SEM observation of zeolitic tuff displays the presence of clinoptilolite in tabular structure and mordenite in fibrous structure and that of bentonitic tuff mostly presents montmorillonite in webby structure. The activated ion-exchange capacity of the Sidomulyo zeolitic and Kedungbedah bentonitic tuffs are
65.30 mgr.eq.Na2O/100 gram zeolite and 37.6 mg.eq.Na2O/100 gram. The zeolitic tuff dominantly contains clinoptilolite whereas the bentonitic tuff mostly consists of montmorillonite.
Due to their porous structure, the zeolite and bentonite are effectively used as heavy-metal adsorbents: 10g of zeolite in a solution of 250ml can adsorb about 9.80ppm of Cu(II), 10.5ppm of Cr(VI), and 11ppm of Ni(II) and 2.5g of bentonite of a solution of 25ml can adsorb 98% of Cu, 97.2% of Co, 96.8% of Ni, 98.3% of Zn.