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All Journal Bumi Lestari Prosiding Seminar Nasional MIPA Al-Kimia Chemistry Notes
Philiphi de Rozari
Department Of Chemistry Faculty Science And Engineering Nusa Cendana University Kampus Penfui UNDANA Jl. Adisucipto Kupang NTT
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Energy Environmental Science

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ADSORPSI ISOTERMAL HERBISIDA PARAQUAT PADA TANAH DI DESA NONBAUN KECAMATAN FATULEU Nitsae, Merpiseldin; de Rozari, Philiphi; Dore Ola, Pius
Prosiding Seminar Nasional MIPA 2012: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2012
Publisher : Prosiding Seminar Nasional MIPA

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Abstract

AbstrakPerilaku dan nasib herbisida di dalam tanah sangat dipengaruhi oleh sifat- sifat tanah. Proses adsorpsi paraquat dapat membantu mengurangi pencemaran pada lingkungan tanah namun kelebihan konsentrasi paraquat dapat menyebabkan kerusakan pada struktur tanah dan keracunan bagi organisme di dalam tanah. Penelitian ini bertujuan untuk mengetahui karakteristik tanah serta menentukan kapasitas dan energi adsorpsi paraquat di dalam tanah Desa Nonbaun- Fatuleu. Hasil penelitian menunjukan bahwa tanah desa Nonbaun mempunyai 3 jenis meneral yaitu mineral kuarsa, actinolite dan muscovite. Harga kapasitas pertukaran kation tanah Nonbaun berada pada kisaran mineral kaolinit yaitu 9,864 meq/100 gram adsorben dengan nilai pH 5,15-5,30 yang menunjukan tanah Desa Nonbaun-Fatuleu tergolong tanah asam. Hasil ini juga diperkuat dengan harga kadar air dan kadar bahan organik yang relatif kecil yaitu 2,77% dan 7,22%. Kapasitas dan energi adsorpsi mengikuti proses isoterm Langmuir baik sebelum maupun sesudah tanah dijenuhkan dengan paraquat. Dari percobaan ini diperoleh nilai kapasitas yang terikat kuat adalah 3,4693 mg/g tanah dan yang terikat lemah adalah 17,7374 mg/g tanah. Sedangkan Energi adsorpsi paraquat berkisar antara 22,92-23,09 KJ/mol.
Penurunan Konsentrasi BOD5, COD dan Padatan Tersuspensi pada Air Limbah dengan Menggunakan Teknologi Lahan Basah Buatan (Constructed Wetland) Philiphi De Rozari; Sherlly M.F Ledoh
Al-Kimia Vol 6 No 2 (2018): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v6i2.5819

Abstract

Constructed wetlands are a promising solution technology to effectively treat domestic wastewater in developing countries at low cost. This paper reports the findings of the effectiveness of sand planted with Thypa latifolia with variation of the length of outflow measured from the bottom of the media in removing BOD5, COD, and suspended solids. The experimental design consisted of 12 vertical flow (VF) mesocosms. There were 3 treatments and one control based on the with variation of the length of outflow measured from the bottom of the media (7, 14, and 21 cm).  During the five months, the mesocosms were loaded with syntethic wastewater. The influent had a 2-day hydraulic retention time. Samples were monitored for BOD5, COD and TSS. The results showed the concetration of BOD5, COD and TSS reduced significantly after the wastewater were treated with constructed wetland systems.  The trend showed that the constructed wetland systems planted with Thypa latifolia had a better performance in comparison with the control. There were no significant differences of BOD5 COD, and suspended solidoutflow among  7, 14 and 21  of constructed wetland systems. This indicated that the length of outflow measured from the bottom of the media did not influence the performance of constructed wetland systems in removing BOD5, COD and TSS
MONITORING OF WATER QUALITY IN THE LAKE MARKEERMEER, THE NETHERLANDS Philiphi de Rozari
Bumi Lestari Journal of Environment Vol 9 No 1 (2009)
Publisher : Environmental Research Center (PPLH) of Udayana University

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Abstract

Lake Markermeer is a large fresh water lake in the centre of the Netherlands. The actual problem in this lake was its high turbidity. Since Lake Markermeer is categorised as a shallow lake, it is very susceptible for water quality problems. The general objective of this study was to study water quality of Lake Markermeer. Monitoring of water quality was carried out in a 5 months period from November, 2007 until March, 2008. For this research, surface water was firstly sampled at 66 representative sites; parameters measured were: pH, EC, temperature, turbidity, DO, Secchi depth, P total, N total, chlorophyll and Silica total. The monitoring was continued every two weeks at two fixed sampling sites referred to as STA and STB with the same previous parameters excluding total. Statistical t-test analysis was utilised to compare the value of each parameter between two sampling stations. Result of water quality measurement showed that variability of surface water quality in the Lake Markermeer could be explained as follows: for pH, conductivity, temperature and dissolved oxygen (DO) no significant variation was found among sampling sites (coefficient of variation, CV ? 10%). On the other hand, for turbidity, Secchi disk depth, P total, N total, chlorophyll-a and silica total, ranges between minimum and maximum values were significantly larger (CV > 10%). The result of the turbidity, Secchi disk depth, N total, P total and chlorophyll-a at the two fixed sampling stations were much diverse during the sampling period.
REDUCTION OF ANIONIC SURFACTANT IN DETERJENT FROM DOMESTIC WASTE WATER USING PUMICE AND SAND AS A MEDIA IN CONSTRUCTED WETLAND SYSTEM Selan, Fianelda Th; de Rozari, Philiphi; Nitbani, Febri Odel; Ola, Pius Dore
Chemistry Notes Vol 2 No 1 (2020): Chem. Notes 2020, 2(1)
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/cn.v2i1.2339

Abstract

The use of pumice and sand as a media in Constructed wetland (CW) system to reduce anionic surfactant has been carried out. This research aimed to investigation the efficiency of pumice and sand in CW system with and without plant (cymbopogon citrates) for CW anionic surfactant removal. There were six variation of CW treatments based on percentage pumice amended in the sand media. The anionic surfactant were analysed using UV-VIS spectrophotometry with metilen blue methods. Results of the analysis on oneway anova showed that the efficiency removal of anionic surfactant in inflow and outflow is significant different, on the variation of media of pumice 10% and sand 90% (CW B) reduced anionic surfactant levels efficiently from an average of 0,481 ppm ppm to 0,188 ppm with a decrease in percentage value of 60,91%.
Bioaktivitas Metabolit Sekunder dari Genus Dipterocarpus Nalle, Halena A.; Lulan, Theodore Y. K.; de Rozari, Philiphi; Ola, Antonius R. B.
Chemistry Notes Vol 4 No (1) (2022): Chem. Notes 2022, 4 (1)
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/cn.v3i2.6078

Abstract

Research has been conducted with the title "Literature Study of Secondary Metabolites and Bioactivity of Plants Genus Dipterocarpus". The method used is a descriptive method with the aim of being to find out the active compounds in the genus plant dipterocarpus and to know the ability of the bioactivity of genus plants dipterocarpus. Based on the results of the study, bioactivity of secondary metabolites from planst of the genus dipterocarpus namely antidiabetic, antiplasmodial, antibacterial, antioxidant, anticlasses, cytotoxic, anticholinesterase, antiproliferation, anti-inflammatory and antimicrobial. Very strong biosaltivity indicated by the ethyl acetate faction plant D. Intricatus Sagai Antioxidant IC50 Nialial is 0.075 μg / mL. While very weak bioacchables are shown extract methanol stem plant D. Costatus as cytotoxic with ic50 value 973 ± 14.57 μg / mL.
Analisis Kualitas Air Desa Nulle Kecamatan Amanuban Barat Kabupaten Timor Tengah Selatan Mawar, Yuliana Pelewa; Kadang, Luther; de Rozari, Philiphi
Chemistry Notes Vol 4 No (1) (2022): Chem. Notes 2022, 4 (1)
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/cn.v4i(1).7744

Abstract

Water is one of the most important human needs, there for the availability and of water has to be protected from pollution. The purpose of the study was to determine the quality of the Spring based on physical, chemical and biological parameters in the Tailete, Netbesi and Oenise springs in Tublopo village, West Amanuban district, South Central Timor regency. The research sampling method followed the meet developed on Indonesian National Standard (SNI) and determination of water quality status was based on the storet method accords to the Decree of the Minister of the Environment No. 115 of 2003. The results should physical and chemical parameters in the Tailete, Netbesi and Oenise springs indicate that meet the water quality standards based on the Minister of Health regulation No. 32 of 2017. However, did was not meet Water quality standards detergent and microbiological parameters, coliform in the Tailete and Oenise springs. The quality status of the Tailete and Oenise springs in was clasis moderately polluted with a score of -25. Meanwhile, class A Netbesi springs are classified as meeting water quality standards with a score of 0.
PREPARATION OF ACTIVATED CHARCOAL FROM Terminalia catappa L. SEED SHELL AS AN ADSORBENT OF LIQUID WASTE OF TOFU INDUSTRY Ola, Pius D.; Bria, Apriance M.; Gauru, Imanuel; Rozari, Philiphi De
Chemistry Notes Vol 5 No 1 (2023): Chem Notes 2023, 5(1)
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/cn.v5i1.11851

Abstract

A research on preparing activated charcoal from Terminalia catappa L. seed shell has been done. This study aimed to determine the characteristics of activated charcoal from Terminalia catappa L.seed shells and test its ability to reduce COD and TSS from a liquid waste of the tofu industry. The parameters studied in characterizing activated charcoal included moisture content, ash content, absorption of I2 and surface area using methylene blue. Analysis of the COD parameter used the redox titration method, while the TSS parameter used the gravimetric method. he optimum time for applying activated charcoal to liquid tofu waste was by measuring COD and TSS levels after interaction with activated charcoal. Results of activated charcoal characterization showed a moisture content of 5%, ash content of 2.10%, an absorption capacity of I2 761.4 mg/g and a surface area of ​​26.74 m²/g. The highest decrease in COD levels occurred at 90 minutes of contact time from initial levels of 2,976 mg/L to 2,304 mg/L, with a reduction efficiency of 22.6%, and the highest decrease in TSS levels occurred at 90 minutes of contact time from initial levels of 1,440 mg/L to 334 mg/L, with a reduction efficiency of 76.8%. Generally, activated charcoal from Terminalia catappa L. seed shells showed an ability to reduce the COD and TSS from the liquid waste of the tofu industry.
Co-Authors Antonius R.B. Ola Bria, Apriance M. Gauru, Imanuel Kadang, Luther Lulan, Theodore Y. K. Mawar, Yuliana Pelewa Merpiseldin Nitsae Nalle, Halena A. Ola, Pius D. Pius Dore Ola Pius Dore Ola Selan, Fianelda Th Sherlly Ledoh