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Journal : Indonesian Journal of Fundamental and Applied Chemistry

Kinetic and Thermodynamic Study Removal of Co(II) Using Biosorbent Spirulina sp. in Aqueous Solution Mohadi, Risfidian; Hermansyah, Hermansyah; Hariani, Poedji Loekitowati; Hanafiah, Zazili; Zulkifli, Hilda
Indonesian Journal of Fundamental and Applied Chemistry Vol 2, No 3 (2017): October 2017
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v2.i3.83

Abstract

Kinetic and thermodynamic adsorption study of Co(II) ions from aqueous solutions by dried Spirulina sp. biomass was investigated in the batch system. The Spirulina sp. was isolated and cultured from algae swamp ecosystem in South Sumatera. The adsorption properties of Co(II) onto dried Spirulina sp. biomass was studied by the influence of contact time, initial metal ion concentration and reaction temperature. The experimental results were the rate of adsorption followed the second-order kinetic model with the rate of reaction k2 is 0.023 g mg-1 min-1  and the thermodynamic studies showed that the adsorption was well fitted to the Langmuir’s model, and the amount of Co(II) removed from solution increased with increasing Co(II) concentration with the higher adsorption energy was 10.38 kJ/mol at 30 °C.Keywords: Spirulina sp, Co(II), adsorption, algae swamp, South Sumatera
Study on Groundwater Quality in Concern to Potent Pollution at Secondary Block P17-5N Delta Telang II (Case Study of Muliasari Village, Tanjung Lago Banyuasin District, South Sumatera Province Indonesia) Novarika, Lilian; Susanto, Robiyanto Hendro; Faizal, Muhammad; Hariani, Poedji Loekitowati
Indonesian Journal of Fundamental and Applied Chemistry Vol 2, No 2 (2017): June 2017
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v2.i2.28

Abstract

Research had been carried out on tidal marshes condition at tertiary channel Muliasari Village and the effect of land user behavior on water and soils quality. The aimed of research is to evaluate water and soil quality and potent pollution due to fertilizer and pesticide utilization. The research methods are survey and qualitative approach using observation and directed interview with questionnaire aid. Water and soils samples were taken by purposive sampling method. Measurement obtained soils has pH 4.59 and 3.92 for TC4 and TC5 respectively. Cation exchange capacity is 21.65 mg/100 g or TC4 and 20.62 mg/100 g for TC5. C-organic contained in both TC4 and TC5 are very high whereas Total-N is moderate hence ratio C/N has moderate value. P2O5 detected as 81.55 ppm at TC4 and 36.06 ppm at TC5. According to Soils Research Centre Bogor, TC4 and TC5 has moderate value of N (35%) while P and K very high (81.55 ppm and 103.32 ppm). Scoring result concluded that soils is in good health and has 76% (TC4) and 73% (TC5). Storet method confirmed score result for soils as B-class or in good condition. According to these result, TC4 and TC5 of Muliasari Village was lightly polluted and still has good prospect as crops land. Key Words: Tidal zone, Water quality, pollution
The influence of time reaction to characteristic of methyl ester sulfonate from seed oil ketapang Hariani, Poedji Loekitowati; Riyanti, Fahma; Fadilah, Ahyati
Indonesian Journal of Fundamental and Applied Chemistry Vol 1, No 1 (2016): February 2016
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v1.i1.14

Abstract

The aim of the present work was to The Preparation of Methyl Ester Sulfonate From Ketapang Seed Oil As Surfactant. The research is to determine the optimum condition synthesis of methyl ester sulfonate surfactant with reaction time variations (3.5; 4.0; 4.5; 5.0; 5.5 hours). The methyl ester from ketapang seed oil were analysis by GC-MS and identified methyl ester sulfonate by using FTIR spectroscopy. The methyl ester from ketapang seed oil showed containing of methyl palmitoleic, methyl linoleic, methyl palmitate, methyl stearate, methyl oleic, methyl palmitolenat and methyl eicosenoate. The optimum condition of methyl ester sulfonate at reaction time 4.5 hours with the mass of methyl ester sulfonate 34,85 g. For the FTIR spectra of sulfonate group is indicated  by shifting of wave number at 1118.71cm-1 until 1029.1 cm-1. The characteristics of methyl ester sulfonate at the optimum reaction time have emulsion stability 71.684%, density 0.8714 g/mL, surface tension 36.232 dyne/cm, and maximum absorbance 1.428 at the maximum wavelength 660 nm. Keywords: Surfactant, methyl ester sulfonate, time reaction, ketapang seed oil
Preparation and Characterization Nanoparticle Calcium Oxide from Snakehead Fish Bone using Ball Milling Method Muryati, Muryati; Hariani, Poedji Loekitowati; Said, Muhammad
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 4, No 3 (2019): October 2019
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v4.i3.111

Abstract

Snakehead Fish Bone (SFB) is a waste from food processing in Palembang. Fish bones have calcium content so they have a potential as a source of Calcium Oxide (CaO). Calcination of fish bones was carried out at a temperature of 900oC with variations of time 1, 2, 3, and 4 hours. The Nanoparticle Calcium Oxide (NCO) was prepared using the ball milling method. This study aims to make NCO as a raw material for hydroxyapatite synthesis. The NCO was characterized using Fourier Transform Infra-Red (FTIR), X-Ray Diffraction (XRD), and Scanning Electron Microscope (SEM). Characterization using FTIR shows that NCO has functional groups O-H, CO32- and PO43- functional groups. XRD analysis shows that NCO has an average particle size of 38.9445 nm.Analysis using SEM shows particles in the form of granules of almost uniform size. The NCO produced eligible of the nanomaterial and has the potential as a raw material for synthesis of hydroxyapatite.Keywords: Nanomaterial, ball milling, calcium oxide, fish bone
Development of the Potentiometric Method for Measurement of Cu Sari, Rani Nawang; Hariani, Poedji Loekitowati; Suheryanto, Suheryanto
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 4, No 3 (2019): October 2019
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v4.i3.122

Abstract

Potentiometry is one of method on measuring metals based on cell potential. Measurements using potentiometry are divided into comparative cells and concentration cells. Concentration cells are measurements of a cell's potential by using two solutions with different concentrations. The aim of this study was to develop a concentration cell potentiometric method equipped with applications so measurements are easier and faster. The added application able to calculate the results of experiments so that the calculation process becomes faster and easier. Validation results give the results of the R the value of 0.9990; LoD 7.6484x10-7, LoQ 6.2103x10-7, RSD 0.64%, and recovery 98.05%. This optimum measurement was carried out at 30 oC and pH 5. The results of Cu measurements in well water obtained the result of 0.9633 ppm. Measurements using the development of this method, get good validation results and can be used on measurements similar to those in the aquatic environment. Keywords: Potentiometry, cell concentration, Copper (Cu), validation, aquatic environment
Effect of Addition of Urea and Zeolite on Rice Plants (Oryza sativa L.) to Nitroxy Emissions on Peatlands Afriyani, Asia Asia; Prayitno, Muhammad Bambang; Hariani, Poedji Loekitowati
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 4, No 3 (2019): October 2019
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v4.i3.132

Abstract

The purpose of this study is to analyze nitro oxide emissions as a result of adding urea and zeolite to rice plants (Oryza sativa L.) on peatlands. The treatments used were 2 factors, namely factor 1 using a dose of urea fertilizer from three levels of treatment N1 : 125 kg/ha; N2 : 250 kg/ha; N3 : 375 kg/ha and factor 2, the dose of zeolite consists of three levels of treatment Z1 : 125 kg/ha; Z2 : 250 kg/ha; Z3 : 375 kg/ha. Each combination was repeated as many as 5 phases (phase 1 = 15 DDP, phase 2 = 35 DDP, phase 3 = 55 DDP, phase 4 = 65 DDP and phase = 90 DDP) so the number of units treatment 3 x 3 x 5 = 45 pots. Data analysis used linear regression test. The results showed the administration of a combination of urea doses and zeolite in rice plantations had not significant effect on nitrous oxide emissions produced at each observation. In this study, the highest nitrous oxide emissions were obtained in phases 1 and 2. From the results of the F test is Ho rejected. With this it is proven that the urea dose partially has not significant effect on nitro oxide emissions. The dose of zeolite (X2) is H0 is rejected, thus showing that zeolite has not significant effect on the availability of nitrous oxide emissions.Keywords: Urea, Zeolite, Nitro oxide emissions peatlands