THE CHEMICAL PROCESSES OCCURRED IN THE REMOVAL OF POLYCYCLIC AROMATIC HYDROCARBONS(PAHs) ON THE SOIL BY FENTON'S REAGENT

The chemical processes occurred in the decomposition of polycyclic aromatic hydrocarbons (PAHs) in the soil by Fenton???s Reagent have been investigated. The aim of this work was to determine the intermediate products of PAHs oxidation by Fenton???s Reagent. The organic material after oxidation was separated into neutral and acidic fraction. Acidic compounds were converted to methyl esters by reaction with diazomethane, and were analysed by using GC/MS. The result showed that a single Fenton???s oxidation cycle was clear a reduction occurred, typically mono- and dicarboxylic acids, remain, and would in themselves continue to pose an environmental hazard unless removed by further oxidation. The neutral material contained PAHs as well as oxidized product

KARAKTER WIRAUSAHA, NIAT BERWIRAUSAHA, DAN KINERJA USAHA MAHASISWA POLITEKNIK NEGERI UJUNG PANDANG

KARAKTER WIRAUSAHA, NIAT BERWIRAUSAHA, DAN KINERJA USAHA MAHASISWA POLITEKNIK NEGERI UJUNG PANDAN

ANALYSIS OF POLYCYCLIC AROMATIC HYDROCARBONS (PAH) COMPOUNDS FROM SEDIMENT IN THE WATERS KAYU BANGKOA PORT AND DEGRADATION OF PHENANTHRENE IN SEDIMENT BY USING KMNO4 OXIDIZER

Research about analysis of Polycyclic Aromatic Hydrocarbon (PAH) from sediments in water of Kayu Bangkoa Port and degradation of phenanthrene from sediments by using KMnO4 have been conducted by Gas Chromatography Mass Spectrophotometry (GC-MS). The samples of sediment were taken at three location in the waters of the Kayu Bangkoa Port. Measurements of phenanthrene performed by standard internal method and analyzed using GC-MS. The results show that KMnO4 oxidizing agent capable of degradated the whole phenanthrene with concentration of 137,13 ng/g in sedimen

Validation of Reversed-phase High-performance Liquid Chromatography Method for Determination of Alpha Tocopherol in Corn Oil

Determination of alpha tocopherol in corn oil can be analyzed by using Reversed-Phase High Performance Liquid Chromatography (RP-HPLC). This research aimed to validate RP-HPLC method for determination of alpha tocopherol in corn oil. The method was based on linearity, precision, accuracy, limit detection (LOD) and limit quantization (LOQ). The Reversed Phase High Performance Liquid Chromatography (RP-HPLC) method includes the determination of the wavelength, the mobile phase composition and the flow rate of mobile phase, then validation of each of the above methods.  The maximum wavelength was found in 290 nm, composition of mobile phase was 100% methanol, flow rate of mobile phase was 1,5 mL/min and retention time was 9,67 min. The researched result indicated that the method of RP-HPLC had a linearity with the correlation coefficient of 0.999, a relative standard deviation (%RSD) for intra and inter-day precision was < 5%, accuracy/recovery was 95.69-100.99 %, detection limit was 0,43 mg/L,  quantization limit was 0,55 mg/L and  alpha tocopherol content  in corn oil was 40.06 ± 0.24 mg/L

THE POTENTIAL BIODEGRADATION HYDROCARBONS OF PETROLEUM SLUDGE WASTE BY CELL BIOMASS SPONGE Callysppongia sp.

The toxicity of petroleum sludge is a serious threat to marine life. Necessary concrete stepspetroleum contamination reduction through a search of potential marine materials degradetoxic components hydrocarbons. The sponge is one potential material reducing toxicproperties of petroleum contamination. The research objective was to determine thepotential Callyspongia sp sponge against the degradation of petroleum hydrocarbonsludge. Four variations of treatment used to determine the potential of sponge biomass,namely: the treatment I, II, III and IV. Indicators degradation is the formation of gas, thesmell fermentation, pH changes and increase in the absorbance of the suspension of mediadegradation. The level degradation each treatment is determined gravimetric method andthe known hydrocarbon component changes by using GC-MS. Unidentified gas, the smellof fermentation and changes in media of pH on average degradation occurs on the 15 daysof contact for all treatments. Data showed degradation occurs absorbance maximum at 20-25 days to contact. The highest degradation rates indicated by IV treatment (26.93 %), III(24.84 %), II (22.59 %), and I: (18.20 %). Found 20 kinds of components in the wastesludge aliphatic petroleum to form a homologous series nC10-nC30, and two aromaticcomponents, namely the 2.7-dimethyl naphthalene and 1.4-dimethyl azulene. Callyspongiasp sponge biomass concluded at the highest IV treatment degrading aliphatichydrocarbons, then treatment III, II and I, while the aromatic components are not degradedby biomass Callyspongia sp sponge at all treatments

IBM PEMBERDAYAAN PEREMPUAN UNTUK MENINGKATKAN EKONOMI RUMAH TANGGA MASYARAKAT DESA TANETE KECAMA176TAN SIMBANG KABUPATEN MAROS SULAWESI SELATAN

IBM PEMBERDAYAAN PEREMPUAN UNTUK MENINGKATKAN EKONOMI RUMAH TANGGA MASYARAKAT DESA TANETE KECAMA176TAN SIMBANG KABUPATEN MAROS SULAWESI SELATA

SELF EFFICACY, KARAKTER WIRAUSAHA, DAN MINAT BERWIRAUSAHA MAHASISWA POLITEKNIK NEGERI UJUNG PANDANG

SELF EFFICACY, KARAKTER WIRAUSAHA, DAN MINAT BERWIRAUSAHA MAHASISWA POLITEKNIK NEGERI UJUNG PANDAN

THE RELATIONSHIP BETWEEN SEAGRASS Thalassia hemprichii PERCENTAGE COVER AND THEIR BIOMASS

Seagrass has many functions and values, including as carbon sink. However, to estimate carbon in seagrass, it involves seagrass biomass harvesting which is laborious, costly, and destructive. This study aimed to find out the relationship between seagrass Thalassia hemprichii percent cover with their biomass which will provide alternative method for biomass estimation leading to an efficient, less cost and less destructive method for seagrass carbon stock estimation. Seagrass were sampled in Bonebatang island, South Sulawesi, and estimated their percent cover following SeagrassWatch Method from different seagrass condition and sediment type, as well as harvested for their biomass. In the lab, seagrass biomass was dried. Data was analyzed by using simple regression analysis. Results showed that there is a relatively strong relationship between percent cover and the belowground, aboveground and total biomass (R2 = 0.70; 0,81 and 8,3, respectively). Seagrass percent cover (seagrass health status, i.e. healthy, moderate and poor) also resulted a relatively strong influence on total seagrass biomass (R2&gt;50%). However, apart from segarss percent cover, some other parameters are needed to be taken into consideration, such as seagrass densities and seagrass morphologie

APPLICATION OF FENTON’S REAGENT ON REMEDIATION OF POLYCYCLIC AROMATIC HYDROCARBONs (PAHs) IN SPIKED SOIL

Problem associated with Polycyclic Aromatic Hydrocarbons (PAHs) contaminated site in environmental media have received increasing attention. To resolve such problems, innovative in situ methods are urgently required. This work investigated the feasibility of using Fenton's Reagent to remediate PAHs in spiked soil. PAHs were spiked into soil to simulate contaminated soil. Fenton's Reagent (H2O2 + Fe2+) and surfactant were very efficient in destruction of PAHs including naphthalene, anthracene, fluoranthene, pyrene, and benzo(a)pyrene from spiked soil. It was indicated by the fact that more than 96% of PAHs were degraded in the solution and the spiked soil.   Keywords: Environmental, Fenton's Reagent, Polycyclic Aromatic Hydrocarbons, and Spiked soil