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All Journal Bumi Lestari Prosiding Seminar Nasional MIPA Al-Kimia
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 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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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.
Co-Authors Merpiseldin Nitsae Pius Dore Ola Sherlly M.F Ledoh