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All Journal International Journal of Advanced Multidisciplinary Analit: Analytical And Environmental Chemistry
Damayanti, Ken Ima
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Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Social Sciences

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Application of Zeolite, Pumice, and Activated Carbon for Lowering Water Hardness and Total Dissolved Solids (TDS) Wulandari, Retno; Damayanti, Ken Ima; Annur, Shohifah; Irawati, Lusi; Irmawan, Ari; Syah, Fikri Firman
International Journal of Advanced Multidisciplinary Vol. 4 No. 2 (2025): International Journal of Advanced Multidisciplinary (July - September 2025)
Publisher : Green Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/ijam.v4i2.903

Abstract

Water is one of the most essential natural resources for living organisms. Tonjong Village is a residential, agricultural, and fish farming area. According to the test results from the Environmental Laboratory Unit of the Environmental Agency, the groundwater quality in Tonjong Village shows the following physical and chemical parameters: TDS 3352 mg/L, TSS 11 mg/L, pH 6.85, Hardness (CaCO?) 1100 mg/L, COD 9.34 mg/L, and BOD 2.40 mg/L. This study aims to reduce TDS and water hardness using a multi-stage treatment method. The research consists of three stages: the preliminary stage, the equipment fabrication stage, and the testing stage. The results indicate a decrease in TDS from 3352 mg/L to 1380 mg/L and a reduction in hardness using material variation 2 from 1100 mg/L to 752.5 mg/L.
VARIATION OF POLYETHYLENE AND POLYPROPYLENE ON THE QUALITY OF PLASTIC TYPES Damayanti, Ken Ima; Ramdhani, Dandi; Ramadhan, Fajar; Setiawan, Gilang Eka
Analit : Analytical and Environmental Chemistry Vol. 9, No. 02 October (2024) Analit : Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/analit.v9i02.186

Abstract

Polyethylene (PE) and polypropylene (PP) provide different characteristics to the produced plastics. The focus of this research is to identify the influence of variations in the composition of polyethylene and polypropylene to produce a new polymer blend with strong mechanical properties and resistance to breaking. Quality parameters observed include tensile strength and flexural modulus tests, notched Izod impact, hardness, and Fourier Transform Infrared Spectroscopy (FTIR). It has been found that the PP:PE (80:20) produces plastic with strong mechanical characteristics while being less prone to breakage, thus making it suitable for plasticware materials.    
Co-Authors Annur, Shohifah Fajar Ramadhan, Fajar Irawati, Lusi Irmawan, Ari Ramdhani, Dandi Retno Wulandari Setiawan, Gilang Eka Syah, Fikri Firman