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All Journal Jurnal Akademika Biologi Indonesian Journal of Limnology
Ahmad Yusuf Afandi
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Environmental Science

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PENGARUH PERBEDAANKADAR LOGAM BERATKROMIUM (Cr) TERHADAPPERTUMBUHAN POPULASISpirulina platensis (Gomont) Geitler DALAM SKALA LABORATORIUM Ahmad Yusuf Afandi; Tri Retnaningsih Soeprobowati; Riche Hariyati
Jurnal Akademika Biologi Vol. 3 No. 3 Juli 2014
Publisher : Departemen Biologi, Fakultas Sains dan Matematika Undip

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (77.096 KB)

Abstract

Industrial products such as metal and paint had generate hazardous wastes, one of then is a heavy metal Chromium (Cr). Industrial wastes containing Cr may cause many negative effects when directly discharged to environment without any prior processing. Therefore, recovery actions (remediation) is one of many ways to solve the problem. Phycoremediation is one of remediation that is simple, efficient and safe in process by using the microalgae to remediate the environment, and one of the microalgae is Spirulina platensis (Gomont) Geitler. This study was conducted to determine the effect and the removal efficiency of heavy metals Cr on Spirulina platensis culture media. The results showed there was significant influence between the administration of heavy metal Cr 1 mg/l, 3 mg/l and 5 mg/l Cr on the population growth of S. platensis. Heavy metal Cr concentration of 1 mg/l increased the growth of S. platensis, while the opposite happened when administrated with 3 mg/l and 5 mg/l. Higher concentration of heavy metal Cr on culture media decreased population of S. platensis. The culture added with heavy metal Cr concentration of 1 mg/l, 3 mg/l and 5 mg/l on the 7 days treatment were able to decrease heavy metal Cr level respectively 35%, 14% and 8%. Thus, the longer treatment days the bigger decrease percentage concentration of heavy metal Cr. Keywords: Cr, phycoremediation, microlagae, Spirulina platensis
Surface Sediment Diatom as A Water Quality Indicator: Case Study: Cilalay and Cibuntu Ponds, Cibinong Aan Dianto; Taofik Jasalesmana; Luki Subehi; Ahmad Yusuf Afandi; Ardo Ramdhani
Indonesian Journal of Limnology Vol. 1 No. 1 (2020): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (275.996 KB) | DOI: 10.51264/inajl.v1i1.1

Abstract

Diatom is classified as algae within the Division of Bacillariophyta. They are unicellular eukaryotic organisms characterized by siliceous cell walls that can be long preserved in sediments. Therefore, diatom analysis in sediment records is a potential water quality indicator for present or paleo studies. The current knowledge on the distribution and diversity of diatoms in the sediment in the urban pond is poorly known. This study aimed to identify the distribution and diversity of diatoms from the sediments of the pond. We expect to obtain a primary database of a variety of diatoms. The sediment samples were taken from Cibuntu and Cilalay Ponds in Cibinong Botanical Garden. Sediments were digested using HCL and H2O2. The resulting diatom solution was dried and transferred onto glass coverslip, which subsequently mounted onto microscope slides using Naphrax (Refraction index 1.7). Diatom identification was examined using a light microscope at 1,000x magnification. Diatom communities in Cibuntu Pond were dominated by species Aulacoseria ambigua, Eunotia bilunaris, Cymbopleura sp, Discostella stelligera, and Rossithidium sp with diversity index of 2.4 and species evenness of 0.8. Whereas, species Fragilaria sp, Eunotia monodon, Navicymbula pusilla, Eunotia bilunaris, and Pinnularia viridis were predominant in Cilalay Pond with diversity index of 1.6 and species evenness of 0.5. Based on the diatom community, Cibuntu Pond is eutrophic indicated by the occurrence of Aulacoseria ambigua, whereas Cilalay Pond is meso-eutrophic indicated by the dominance of Fragillaria. This exploratory survey provides the first inventory of diatom assemblage in Cibuntu and Cilalay Ponds for roughly inferring the environmental changes in a shallow lake ecosystem.
Co-Authors Aan Dianto Ardo Ramdhani Luki Subehi Riche Hariyati Taofik Jasalesmana Tri Retnaningsih Soeprobowati