Aminudin Sulaeman
Analytical Chemistry Research Group, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung

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The Distribution of Microalgae in a Stabilization Pond System of a Domestic Wastewater Treatment Plant in a Tropical Environment (Case Study: Bojongsoang Wastewater Treatment Plant) Ariesyady, Herto Dwi; Fadilah, Rifka; Kurniasih, Kurniasih; Sulaeman, Aminudin; Kardena, Edwan
Journal of Engineering and Technological Sciences Vol 48, No 1 (2016)
Publisher : ITB Journal Publisher, LPPM ITB

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Abstract

The Bojongsoang Wastewater Treatment Plant (WWTP) serves to treat domestic wastewater originating from Bandung City, West Java, Indonesia. An abundant amount of nutrients as a result of waste decomposition increases the number of microalgae populations present in the pond of the wastewater treatment plant, thereby causing a population explosion of microalgae, also called algal blooming. In a stabilization pond system, the presence of algal blooming is not desirable because it can decrease wastewater treatment performance. More knowledge about the relationship between the nutrients concentration and algae blooming conditions, such as microalgae diversity, is needed to control and maintain the performance of the wastewater treatment plant. Therefore this study was conducted, in order to reveal the diversity of microalgae in the stabilization pond system and its relationship with the water characteristics of the comprising ponds. The results showed that the water quality in the stabilization pond system of Bojongsoang WWTP supported rapid growth of microalgae, where most rapid microbial growth occurred in the anaerobic pond. The microalgae diversity in the stabilization ponds was very high, with various morphologies, probably affiliated with blue-green algae, green algae, cryptophytes, dinoflagellates and diatoms. This study has successfully produced information on microalgae diversity and abundance profiles in a stabilization pond system.
PEMBUATAN DAN KUALITAS ARANG AKTIF DARI KAYU SENGON (Paraserianthes falcataria) SEBAGAI BAHAN ADSORBEN Pari, Gustan; Buchari, Buchari; Sulaeman, Aminudin
Jurnal Penelitian Hasil Hutan Vol 14, No 7 (1996): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

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Abstract

The characterization  of activated charcoal from  steam activation of sengon (Paraserianthes falcataria) wood is reported in this paper. The purpose of this investigation was to study  the influences  of  temperature  and  concentration  of chemical  activator  on the activated  charcoal yield  and its  quality. The activated  charcoal  was produced  in  a stainless steel  retort  with electrical  heater  at the temperature  of  7000C, 8000C  and  9000C  and  for  activation  used NH4HCO3 with its consentration  0,5; 1,0; 3,0; 5,0 and 10% respectively.The best quality of the activated charcoal produced when the activation temperature  was 9000C with the NH4HCO3 1,0 %. The yield  of  activated  charcoal  was  5,90%,  moisturecontent 6,39  %, ash content 9,15 %, volatile matter 8,81 %, fixed  carbon 82,04 %. Adsorptive capacity of iodine was 1154,4  mg/g, NH3 25,08 %, CHCl3 42,28 %, CCl4 51,74 %, benzene 49,10% and methylene  blue 138,80 - 319,00  mg/g. Surface area was 1143,7 m2/g. The most abundance  of particle  size  was 4,00 - 5,65 micron  and pore volume  16,00 - 22,62  micron. High and diameter pore was 37,49 and 22,52 micron.