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All Journal MARINA CHIMICA ACTA PROSIDING SEMINAR KIMIA KOVALEN: Jurnal Riset Kimia Indonesia Chimica Acta Panrita Abdi - Jurnal Pengabdian pada Masyarakat Al-Kimia Indonesian Journal of Chemistry Communications in Science and Technology SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Keperawatan Muhammadiyah

Indah Raya

Chemistry Department, Faculty Of Mathematics & Natural Sciences Hasanuddin University

Author-ID : 2671967

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Pengaruh Penambahan Ion Mg2+ Terhadap Kandungan Lipid Fitoplankton Chlorella vulgaris Sebagai Bahan Baku Pembuatan Biodiesel dengan Metode Ultrasonik Alfani M Datu; Indah Raya; Muhammad Zakir
Marina Chimica Acta Vol. 14 No. 2 (2013): Volume 14 No. 2 (2013)
Publisher : Hasanuddin University

An investigation on the effect of Mg2+ on its lipid content from phytoplankton Chlorella vulgaris as a raw material for producing biodiesel by ultrasonic method has been carried out. The results showed that Mg2+ is good as a nutrient for phytoplankton. The optimum concentration was 0.4 ppm. Total of dry biomass was 32.7902 grams. Lipid was extracted by ultrasonic method using ethanol 95% as solvent. Biodiesels were syntesized in two steps namely esterification by methanol solvent and H2SO4 as catalyst, folowed by transesterification by using methanol solvent with KOH as a catalyst. Total of biodiesel made was 11.5727 grams and the yield was 35.29%. The result of biodiesel characterised in term of physical and chemical characteristics including: density, viscosity, free fatty acid, saponification value, and iodine value, respectively. Result of the analysis showed that biodiesel characteristics have fulfilled standard the American Society for Testing and Materials (ASTM D6751), except value of density and Free Fatty Acid.

Produksi Biodiesel dari Lipid Fitoplankton Nannochloropsis sp. Melalui Metode Ultrasonik Raymond Kwangdinata; Indah Raya; Muhammad Zakir
Marina Chimica Acta Vol. 14 No. 2 (2013): Volume 14 No. 2 (2013)
Publisher : Hasanuddin University

A research on production of biodiesel from lipid of phytoplankton Nannochloropsis sp. through ultrasonic extraction method has been done. In this research, we carried out a series of phytoplankton culture to determine the optimum time of growth and biodiesel synthesis process from phytoplankton lipids. Process of biodiesel synthesis consists of two steps, i.e isolation of phytoplankton lipids and biodiesel synthesis from that lipids. Oil isolation process was carried out by ultrasonic extraction method using ethanol 96 % while biodiesel synthesis was carried out by transesterification reaction using methanol and KOH catalyst under sonication. Percentage rendement of weight per biomass Nannochloropsis sp. is 48,33 %. Characterization of biodiesel was carried out in terms of physical properties: density, viscosity, and chemical properties: FFA content, saponification value, and iodine value. The result showed that analysis characterization biodiesel phytoplankton Nannochloropsis sp. that biodiesel from that species phytoplankton generally fullfilled the American Society for Testing and Materials (ASTM D6751) standard, except density value was 0,8151 g.cm-3, viscosity value was 1,15 cSt, and FFA content was 0,5381 %, to be used as fuel.

THE EFFECT OF Fe2+ DAN Mn2+ IONS TOWARD β-CAROTENE PRODUCTIVITY BY PHYTOPLANKTON Isochrysis aff galbana (T-iso) Erna Mayasari; Indah Raya; Hasnah Natsir
Marina Chimica Acta Vol. 13 No. 2 (2012): Volume 13 No. 2 (2012)
Publisher : Hasanuddin University

The research aimed to find out the effect of Fe2+ and Mn2+ towards β-carotene productivity as result of oxidative stress from photosystem (PS II). The phytoplanton Isocrysis aff galbana (T-iso) were the microalgae species which had the high lipid content primarily and had potentiality to produce β-carotene as the β-carotene supplement. Analysis method was carried out by the sonication extraction for short and cheap in the lysis cell of phytoplankton biomassa, infra red (IR) to find out the interaction metal ion and UV/VIS spectrophotometer to determine β-carotene concentration. The research result indicateds that Fe2+ has higher impact than Mn2+ on the β-carotene productivity. The interaction of ions metal indicates as M-N, -O-M and M←OH-C complex in the phytoplankton amino acid. The β-carotene concentration is 4,97 µg/g DW in addition Fe2+ 0,30 ppm and 1,95 μg/g DW in Mn2+ 0,20 ppm. The dry weight concentrations of β-carotene indicates that I. aff galbana with Fe2+ addition has potential as β-carotene supplement.

THE BIOACCUMULATION OF Cd(II) IONS On Euchema Cottoni SEAWEED BIOAKUMULASI ION Cd(II) PADA RUMPUT LAUT Euchema Cottoni Indah Raya; Rahmah Rahmah
Marina Chimica Acta Vol. 13 No. 2 (2012): Volume 13 No. 2 (2012)
Publisher : Hasanuddin University

Cadmium is an element that can accumulated in seaweed thallus. One of an alternative methode was used to determine the amount of Cd(II) ions were accumulated in Euchema Cottoni thallus is adsorption methode, that was conducted with variations of contact time and concentrations. The concentrations of Cd(II) ions in solutions were determined by using Atomic Absorption Spectrophotometer (AAS). Isothermal model to evaluated the maximum adsoprtions capacity were used Freundlich and Langmuir isotherms. Based on both isothermal models the results showed that adsorption capacity were 33,898 mg/g wet weight by Langmuir and 0,00625 mg/g wet weight by Freunlich isotherms respectively. The adsorptions energy (ΔG) is 9,7482 KJ/mol indicated as physisorptions. While infrared spectrum showed Euchema cottoni have –OH, CO2, -CH2, -CH3, and - SO3- functional groups.

Co-Authors -, Emmasitah Abd. Rauf Patong Abd. Wahid Wahab Abdul Karim Abdul Wahid Wahab Abdul Wahid Wahab Ahmad Yani Ahmar, Hamdiah Ahyar Ahmad Alfani M Datu Andi Evi Erviani Andi Muhammad Anshar Andi Nilawati Usman Anita Anita Annisa Eka Permatasari Asbia Asbia Bambang Rusdiarso Erna Mayasari Fitria Aziz Gita Gita Hasnah Natsir Hasnah Natsir Hasnah Natsir Herlina Rasyid Husnul Khotimah Irfandi, Rizal Jayawarsa, A.A. Ketut M. Sjahrul M. Sjahrul Maming Mauludiyah, Indah Muh. Nur Alam Muh. Yusri Karim Muhammad Nadir Muhammad Zakir Muhammad Zakir Muhammad Zakir Muhammad Zakir Muntasir, Muntasir Musa Ramang Narsito Narsito Nurcaya Nurcaya Nurrahmi Umami Nursiah La Nafie Nursiah La Nafie Paulina Taba Prihartini, Ade Rahayu Rahmah Rahmah Raymond Kwangdinata Ridhawati Thahir Riska Mardiyanti Rugaiyah A. Arfah Ruslan Ruslan Ruslang, Ruslang St Fauziah Sulistiani Jarre Syaharuddin Kasim Syahruddin Kasim Tuti Sukini Usman, Andriani Wahda, Indah Wahyudin Rauf Windasari Yudiarsi Eppang Yusafir Hala Yusafir Hala

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