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All Journal PROSIDING SEMINAR KIMIA KOVALEN: Jurnal Riset Kimia Jurnal Kimia Mulawarman JURNAL ATOMIK
Lianasari, Ika Yekti
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science

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Journal : PROSIDING SEMINAR KIMIA

 1 
KAJIAN LITERATUR PEMANFAATAN ADSORBEN KITOSAN TERMODIFIKASI ARANG AKTIF LIMBAH ORGANIK TERHADAP LOGAM BERAT Arsyakia, Tarisa; Koesnarpadi, Soerja; Lianasari, Ika Yekti
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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A literature review on the utilization of chitosan adsorbent modified organic waste activated charcoal against heavy metals has been conducted. From the results of the study, it was obtained that organic waste activated charcoal still has chemical content in the form of cellulose, lignin, hemicellulose, carboxymethyl cellulose ranging from 33.61-65,7%. The carbon compounds formed ranged from 66.60-86.4%. The organic waste activated charcoal used includes coffee grounds; tea grounds; teak wood powder; coconut shell; durian peel waste; pineapple peel waste; salak fruit seed waste; and rubber fruit shell. Activated charcoal is modified with chitosan to optimize pores, expand the surface, and increase adsorption power. The modification process is by mixing chitosan with a certain weight and dissolving it in 1-3% CH3COOH, then adding activated charcoal with a certain weight, stirring until a homogeneous gel is formed. Next, it was baked at 60ºC for 24 hours. The results formed were mixed into NaOH with a certain concentration, then washed with distilled water until neutral and stored in a desiccator. The chitosan - activated charcoal adsorbent was then contacted with heavy metals Arsenic (As); Lead (Pb); Cadmium (Cd); Copper (Cu); Zinc (Zn); and Iron (Fe). The results obtained percent absorption and adsorption capacity ranged from 85.32-99.992% and 0.1236-177.7035 mg/g. The values of percent absorption and adsorption capacity are influenced by the surface area, concentration, and adsorbent that needs to be activated. Keywords : Activated Charcoal, Chitosan, Modification, Heavy Metal
KAJIAN LITERATUR PEMANFAATAN ADSORBEN ARANG AKTIF LIMBAH ORGANIK TERMODIFIKASI SURFAKTAN (SLS/SDS) TERHADAP ION LOGAM BERAT Terra, Patrycia Zulliani; Yusuf, Bohari; Lianasari, Ika Yekti
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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A literature review of the use of surfactant-modified organic waste activated charcoal adsorbents (SLS/SDS) on the percent absorption and adsorption capacity of heavy metal ions has been carried out. The surfactants used are sodium lauryl sulfhate (SLS) and sodium dodecyl sulfhate (SDS). The organic waste activated charcoal used includes rice husks, teak wood sawdust, bamboo, salak fruit skin and coconut shells. From this study, it was found that activated charcoal predominantly contains cellulose and its derivatives which can be a carbon source. Modification with surfactants (SLS/SDS) aims to increase the adsorption capacity, absorption percentage and also the surface area of the adsorbent. The modification process is by mixing surfactant and activated charcoal with a certain weight and then homogenizing. The mixture was then neutralized with distilled water. Next, it is placed in the oven at a certain temperature, then crushed and sieved with a 100 mesh size. Next, the activated charcoal-surfactant adsorbent is contacted with heavy metal ions such as Pb2+, Cr3+, Cr6+, and Ni2+. The absorption results obtained ranged from 93.50 – 99.89%, with an adsorption capacity of 0.144 – 81.300 mg/g. The size of the percent absorption value and adsorption capacity is influenced by the surface area, activator substance, contact time, pH, and also the concentration of the adsorbate. Keywords: Activated Charcoal, Heavy Metal Ions, SLS, SDS, Modification
REVIEW ARTIKEL: ANALISIS pH, KONDUKTIVITAS, DAN OKSIGEN TERLARUT PADA AIR SERTA KADAR LOGAM BESI MENGGUNAKAN SPEKTROFOTOMETRI UV-VIS Putri, Marlisa Roro; Yusuf, Bohari; Lianasari, Ika Yekti
PROSIDING SEMINAR KIMIA Vol 3 No 2 (2025): Prosiding SNKT 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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A literature review on the analysis of conductivity, ph and Dissolved Oxygen parameters and the application of uv-vis spectrophotometry in measuring iron metal levels in water was conducted. This literature review reviewed several studies related to water quality analysis with several parameters and measurement of total iron levels. Commonly used parameters include pH, conductivity, Dissolved Oxygen (DO), and iron metal levels. Measurements are made with tools such as pH meters, conductivity meters, DO meters, and UV-Vis spectrophotometry for iron metal levels. The use of UV-Vis spectrophotometry as a detection method was chosen due to its accuracy in quantitative analysis and its ability to identify dissolved metal species non-destructively. The results showed significant variations in these parameters at various locations. Some of these parameters did not meet the recommended water quality standards. The iron metal concentration data obtained showed variations in values depending on the type of complexant used in each sample. The main factors of concern are heavy metal contamination, especially iron, as well as low Dissolved Oxygen levels. The importance of regular water quality monitoring and better management is emphasized to maintain environmental balance and public health. Keywords : Water quality, Dissolved oxygen, Conductivity, pH, Iron.
REVIEW ARTIKEL: BEBERAPA METODE MIKROENKAPSULASI ADSORBEN BERBASIS ALGINAT DAN APLIKASINYA UNTUK MENGHILANGKAN ION LOGAM DALAM LARUTAN BERAIR Farlianti, Resma Lita; Panggabean, Aman Sentosa; Lianasari, Ika Yekti
PROSIDING SEMINAR KIMIA Vol 3 No 2 (2025): Prosiding SNKT 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Alginate is a natural polysaccharide consisting of mannuronic acid and guluronic acid connected via glycosidic bonds. Alginate has properties of biocompatibility, biodegradability, and reports in nature that make it attractive as a base material in microencapsulation applications. Microencapsulation is a technology used to coat active ingredients in small particles with the aim of increasing stability, solubility, and controlling the release of active substances. This article aims to review research results related to various methods of alginate microencapsulation as an adsorbent taken from several scientific articles. This literature review shows that encapsulation methods are divided into two categories, namely physical and chemical methods as well as several technologies such as coacervation, spray drying, extrusion, freeze drying and layer-by-layer coating. Alginate-based adsorbents, especially modified ones, show a better capacity to absorb heavy metals than pure alginate with adsorption capacities ranging from 0,025 mg/g to 416,67 mg/g. The adsorption efficiency is influenced by the physicochemical properties of the adsorbent and external conditions such as pH and metal ion concentration. With its various advantages, alginate-based microencapsulation has great potential for application in various industrial fields, especially in air purification, pharmaceuticals and nutrition. Keywords : Alginate, Microencapsulation, Adsorbent, Metal
REVIEW ARTICLE: PEMANFAATAN MIKROKAPSUL ALGINAT SEBAGAI ADSORBEN ION LOGAM Rumengan, Nur Khamillah; Panggabean, Aman Sentosa; P. Pasaribu, Subur; Lianasari, Ika Yekti
PROSIDING SEMINAR KIMIA Vol 3 No 2 (2025): Prosiding SNKT 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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A review article has been carried out on the use of alginate microcapsules as metal adsorbents. From the review of this article, it was found that metal pollution would harm the environment, so alginate microcapsules were made which have a carboxylic acid group, namely carboxyl which is able to bind with a metal. The metals that are adsorbed are Cd2+, Cu2+, Mn2+, Cr6+, Ni2+. The microcapsules reviewed in this article include Ca-Alginate-EDTA Microcapsules, Magnetite-Alginate Microcapsules (MNPs-ALG), Alginate and Alginate/ Montmorillonite Films, polyvinyl alcohol-Na-alginate Microcapsules, Ca-alginate-DMG. The aim of modifying alginate microcapsules is to increase the metal absorption capacity, metal absorption recovery and surface area of ​​each adsorbent. The way alginate microcapsules work is by exchanging unstable ions and the flow and stirring speed will affect the shape and size of the microcapsules. Slow stirring will produce microcapsules with a larger particle size because during the stirring process large droplets are formed. The absorption results obtained ranged from 84-119% and the adsorption capacity was 0.0301 - 185.95 mg/g. Keywords : Adsorption, Alginate, Metal Ions, Microcapsule
Co-Authors Alimuddin Aman Sentosa Panggabean Aris Munandar Arsyakia, Tarisa Bohari Bohari Bohari Yusuf Bohari Yusuf Djihan Ryn Pratiwi, Djihan Ryn Farlianti, Resma Lita Linda Agustina Nisa, Muflihatu Khoiratun Putri, Amelia Putri, Marlisa Roro Rumengan, Nur Khamillah Saibun Sitorus Soerja Koesnarpadi Subur P Pasaribu Terra, Patrycia Zulliani