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All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Jurnal Kimia (Journal of Chemistry) Buletin Udayana Mengabdi Ecotrophic, Journal of Environmental Science Jurnal Media Sains
Ni G. A. M. Dwi Adhi Suastuti
Program Studi Kimia FMIPA Universitas Udayana, Bukit Jimbaran, Bali-Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Electrical & Electronics Engineering Environmental Science Immunology & microbiology Medicine & Pharmacology

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KUALITAS AIR SUNGAI DI KAWASAN WISATA PANTAI PETITENGET, KEROBOKAN KABUPATEN BADUNG BALI Wayan Budiarsa Suyasa; Sri Kunti Pancadewi G. A; Iryanti E. Suprihatin; Dwi Adi Suastuti G. A.
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 12 No 2 (2018)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1183.943 KB) | DOI: 10.24843/EJES.2018.v12.i02.p11

Abstract

In order to maintain the environmental carrying capacity of coastal tourism, this research was conducted to determine the condition of river water environmental pollution in the Petitenget beach area and pollutant source activities. Determination of water quality is carried out by analyzing the water quality taken at several sampling points in the four rivers that lead to the Petitenget beach. Determined the pollution index value (IP) of the physical chemical and biological pollution parameters. The results showed that the four rivers that flow into the Petitenget Beach area had been contaminated with indications of pH, BOD, COD, ammonia, Coliform and E. coli which exceeded water quality category III class quality (PerGub Bali No 16 Year 2016). The four rivers are included in the criteria of severe contamination. The four rivers have experienced physical damage or structural changes that have very high discharge fluctuations both in quantity and quality. Slimy basic structure, smelly and slum aesthetic waters. While the indication of the impact of pollution is waste water which is directly discharged into the river from hotels, restaurants, homestays, commercial centers and settlements.
SINTESIS DAN KARAKTERISASI SIFAT FISIK DAN KIMIA KATALIS BENTONIT-ZnO I. A. G. Widihati; M. Manurung; N. G. A. D. A. Suastuti; N. P. A. J. S. Putri
Jurnal Kimia (Journal of Chemistry) Vol. 16, No.2, Juli 2022
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JCHEM.2022.v16.i02.p13

Abstract

Pemanfaatan lempung bentonit sebagai katalis telah dilaporkan oleh banyak peneliti. Aktivitas katalitik lempung umumnya tidak begitu tinggi. Oleh sebab itu, lempung harus dimodifikasi terlebih dahulu sebelum digunakan. Sintesis dan karakterisasi lempung termodifikasi ZnO (Bentonit-ZnO) telah dilakukan. Penelitian ini bertujuan untuk mengetahui sifat fisik dan kimia dari modifikasi lempung oleh ZnO. Bentonit dipreparasi terlebih dahulu kemudian diinterkalasi dengan ZnO yang diharapkan dapat membentuk pilar. Bentonit-ZnO yang telah tersintesis dikarakterisasi sesuai dengan manfaat Bentonit-ZnO sebagai katalis menggunakan Difraksi Sinar X, SEM-EDS, FTIR, luas permukaan dengan metode adsorpsi Methylene Blue dan situs asam permukaan dengan metode titrasi asam-basa. Hasil karakterisasi menunjukkan bahwa interkalasi ZnO ke dalam bentonit tidak meningkatkan jarak antar lapis, permukaan katalis menjadi lebih homogen serta adanya peningkatan jumlah unsur Zn, munculnya pita-pita serapan pada daerah 3600; 1600 – 1650; 2900-2850 dan 450 cm-1 yang mengidentifikasi karakteristik gugus fungsi dari Bentonit-ZnO, serta luas permukaan dan situs asam berturut-turut sebesar 46,357 m2/g dan 5,887 x 1022 situs/g. Kata kunci: bentonit, katalis, karakterisasi, terpilar, ZnO. ABSTRACT The use of bentonite clay as a catalyst has been reported by many studies. The catalytic activity of clays is generally not very high. Therefore, the clay must be modified before use. Synthesis and characterization of ZnO (Bentonite-ZnO) modified clay was carried out. This study aimed to determine the physical and chemical properties of modified Bentonite with ZnO. Bentonite was dipped first and then intercalated with ZnO which was expected to form pillars. The synthesized Bentonite-ZnO was characterized according to the benefits of Bentonite-ZnO as a catalyst using X-Ray Diffraction, SEM-EDS, FTIR, surface area using Methylene Blue adsorption method, and surface acid sites using an acid-base titration method. The characterization results showed that the intercalation of ZnO into bentonite did not increase the distance between layers, the catalyst became more homogeneous and there was an increase in the number of Zn elements, the appearance of absorption bands in the 3600; 1600 – 1650; 2900-2850 and 450 cm-1 regions which identified the functional group characteristics of Bentonite-ZnO and surface area and acid sites of 46.357 m2/g and 5.887 x 1022 sites/g, respectively. Keywords: bentonite, catalyst, characterization, pillared, ZnO.
Co-Authors Amanda Awalia Ramadhani Anak Agung Istri Agung Mayun Laksmiwati Dewa Ayu Indra Dewi Dewa Ayu Windu Manik Anandagiri Dwi Kurnia Putra R G. A. Henny Kurnia Ratnasari I G. A. K. S. Dewi I G. A. M. A. S. Gitadewi I G. M. A. P. Raharja I Gede Andy Andika Parahita I Gusti Ayu Kunti Sri Panca Dewi I M. Siaka I Made Siaka I Made Sutha Negara I Nengah Simpen I Putu Bagus Mahendra I W BUDIARSA SUYASA I Wayan Suarsa I. A. Gede Widihati I. G. A. K. S. P. Dewi Ida Bagus Amertha Putra Manuaba Ida Bagus Putra Manuaba Irdhawati Irdhawati Iryanti Eka Suprihatin Kadek Ari Esta Ketut Ratnayani M A Yohanita Nirmalasari M. Arsa M. Krisensia Manuntun Manurung N. P. A. J. S. Putri Nadya Sarilla Agatha Nanik Ayumi Ni Komang Ariati Ni Komang Tria Paramita Septiari Ni LUH ARPIWI Ni Luh Eka Anggarayanti Ni Made Puspawati Ni Made Suaniti Ni Putu Ayu Krismayanti Ni Putu Ayu Susilawati Noviyanti, Ni Putu Pradnyadari, I Gusti Ayu Lia Putu Suarya R. M. Derisa Rosalia Gosal W. D. Sulihingtyas Wahyu Dwijani Sulihingtyas Wahyu Dwijani Sulihingtyas Welhelmus Djo, Yuliana Herman Yudith Rizkia Widyawati Yuliana Herman Welhelmus Djo