Claim Missing Document
Check
Articles

Found 2 Documents
Search

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

Show Abstract | Download Original | Original Source | Check in Google Scholar

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.
Kajian Strategi Pengendalian Pencemaran Sub Daerah Aliran Sungai (DAS) Kali Dendeng Kota Kupang Philiphi de Rozari
Jurnal Inovasi Kebijakan Vol 2 No 1 (2017): Jurnal Inovasi Kebijakan
Publisher : Badan Penelitian dan Pengembangan Daerah Kota Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kali Dendeng is important river for Kupang citizen because the water resources from Kali Dendeng are used by the communities for domestic, agriculture, animal husbandry and small industries purposes. This research aims to; (1) to determine the physical and chemical condition of the waters of Kali Dendeng and to analyze the water quality of Kali Dendeng River and to determine the load of the pollutant based on several water quality parameters; (2) to identify sources and types of pollutants in wastewater and river water; (3) to identify the role of various stakeholders in Kali Dendeng to achieve sustainable use of water resources and to protect the environment. The study was conducted by measuring several water quality parameters such as turbidity, conductivity, pH, DO, COD, BOD, TSS, N-Nitrite, P-PO43-, oils and fats, detergents and coliform bacteria in several sampling points and distributing questionnaires to decision makers and communities living in Kali Dendeng River Basin. The results showed that BOD, oil and fat, and coliform concentrations in Kali Dendeng had exceeded the threshold specified in accordance with Government Regulation No.82 of 2001. In addition, water quality status using STORET INDEX analysis showed that sub DAS Kali Dendeng was categorized medium contaminated with BOD load = 29,448 kg / day and COD load = 56, 540 kg / day. The waste disposal from septic or greywater, disposal of tofu industry waste, and pig farm waste was the major contribution of water pollution in Kali Dendeng.