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All Journal Berkala Perikanan Terubuk Jurnal Ilmu Lingkungan JIP (Jurnal Industri dan Perkotaan) Jurnal Kajian Lingkungan Komunikasi Fisika Indonesia Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Chimica et Natura Acta Jurnal Ilmiah Mahasiswa Fakultas Ilmu Sosial & Ilmu Politik JURNAL PHOTON Indonesian Journal of Chemical Analysis (IJCA) Unri Conference Series: Community Engagement Construction and Material Journal Dinamika Lingkungan Indonesia
Sofia Anita
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Nursing Physics Social Sciences Transportation

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ANALISIS KANDUNGAN LOGAM MERKURI, KADMIUM, TIMBAL DAN SIANIDA PADA ALIRAN SUNGAI INDRAGIRI, KABUPATEN INDRAGIRI HULU Nola Oktaria; Tengku Abu Hanifah; Sofia Anita
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

Increasing activities of illegal gold mining caused environmental damage of the river. Heavy metal pollution of Hg, Pb, Cd and CN‾ were derived from mining waste dumped into the river. This research was analysed of the metal content of Hg, Pb, Cd and CN‾. Samples were taken at 4 sampling points, for Hg, Pb and Cd were analyzed by Atomic Absorption Spectrophotometry method and CN‾ were analyzed by Uv-Vis Spectrophotometry. The results show that the concentration of Hg was in between 1.30 – 3.35 ppb, Cd 0.1002 – 0.1684 ppm, Pb not detection – 0.988 and CN¯ not detection – 0.72 ppm. All of the metal concentration have passed a specified threshold limit of PP No. 82 Tahun 2001, except for Pb on the ST2 and Cyanide ion on the ST4, that are still below the limit.
POTENSI ARANG AKTIF DARI TULANG KAMBING SEBAGAI ADSORBEN ION TEMBAGA, TIMBAL, NITRAT DAN SIANIDA DALAM LARUTAN Ulul Azmi; Tengku Abu Hanifah; Sofia Anita
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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ne"> The utilization of animal bones as adsorbent has been widely studied. From several studies showed that animal bones has good potential as an adsorbent of heavy metals. However, the composition of the mineral constituent in bone of animals is different, and manufacturing process also affect the potential of bone as an adsorbent. In this study, the potential of goat bone activated charcoal as an adsorbent for Cu2+, Pb2+, NO3- and CNions have been studied. Activated charcoal of goat bones was made with the carbonization of goat bone at 700°C for 20 minutes, then crushed and sieved to obtain charcoal powder with a size of 100 – 120 mesh. The activation process performed using Na2CO3 activator with various concentration of 2.5%; 5% and 7.5% that contacted for 24 hours. The resulting of charcoal residue was dried and heated in a furnace at 800°C for 15 minutes, washed with distilled water and then dried. Activated charcoal that generated was characterized, and the best of activated charcoal according to the results of the characterization was used for adsorption of Cu2+, Pb2+, NO3- and CN- ions. From the results of characterization showed the goat bone activated charcoal which activated by Na2CO3 5% has the best result. The result of adsorption of Cu2+, Pb2+, NO3- and CN- ions showed that percentage of adsorption are 99,75%; 99,95%; 94,91% and 74,17% respectively. The highest of adsorption percentage of activated charcoal is Pb2+ ion and the lowest is CN- ion.
POTENSI ABU DARI TULANG IKAN TONGKOL SEBAGAI ADSORBEN ION MANGAN DALAM LARUTAN Puji Astuti; Sofia Anita; Tengku Abu Hanifah
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Tuna fish bone waste has not been used optimally yet. The tuna bone contains phosphate calcium and carbonate calcium so that oxide calcium can be formed when they are calcinated. Oxide calcium pattern which is relatively opened is hexagonal in shape, inside the shape H+ and other ions are trapped hence it is potential to be an adsorbent. This study was conducted to determine the absorption ability of oxide calcium based on various concentrations and contact times. Manganese analysis was performed using Atomic Absorption Spectroscopy (AAS). The highest absorption ability of oxide calcium to manganese based on variation of concentrations (10 mg/L, 30 mg/L dan 50 mg/L) was 60.334% for 50 mg/L of manganese concentration and immerse time of 20 hours with 5, 10, 15, 20, and 24 hours contact time. Optimum asorption was found at 20 hours of immerse time and 50 mg/L of manganese concentration analyzed with a value of 98.19%. Level of calcium and oxide calcium in ash of tuna bones analyzed by complexometry were 22.44% and 31.36%, respectively.
STUDI EMISI KARBON DIOKSIDA DARI TIGA JENIS LAHAN GAMBUT DI DESA TANJUNG LEBAN DAN SEPAHAT KECAMATAN BUKIT BATU KABUPATEN BENGKALIS Edo Furnando; Tengku Ariful Amri; Sofia Anita
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

The high  concentration of carbon  dioxide  in the atmosphere  is suspected  as the main cause  of global  warming,  therefore,  the carbon balance  is very  important  to  investigate. At this time, tropical peatlands are used as agricultural cultivation and plantation, one of them is in  Bengkalis,  Riau Province.  This study aimed  to measure  the concentration of CO2 based on  the relationship  of physical and  chemical  properties of  peat.  Measurements  were performed on  peatlands  which have  different  vegetation cover,  i.e. bush  land, oil palm  plantation,  and  secondary  forest.  The used method in this study  are Infrared  Gas  Analyzer  and  Gas Chromatography.  The average of obtained emissions based on  the effect  of  water table,  peat  temperature,  and  pH  (H2O)  of  bush  land, oil palm  plantation, and secondary forest  are  497,4  ppm,  523,2  ppm, and  457,2  ppm, respectively.
VARIASI BERAT KATALIS DAN SUHU REAKSI TRANSESTERIFIKASI CRUDE PALM OIL MENGGUNAKAN KATALIS CANGKANG KERANG DARAH KALSINASI 800 OC Muhammad Reza Pahlevi; Nurhayati '; Sofia Anita
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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"> Biodiesel is one of the alternative fuels derived from petroleum. Compared to diesel fuel, it is renewable, biodegradable, and environmentally friendly. Biodiesel can be synthesized in two steps, that are esterification and transesterification stages. In this study, biodisel was synthesized from CPO through esterification using concentrated H2SO4 as catalyst, and transesterification using CaO catalyst from Anadara granosa shell waste. This catalyst was calcined at 800 oC for 10 hours. The surface area measurement of CaO catalyst derived blood clam shell was using methylene blue adsorption method and was obtained 17.3742 m2/g. The biodisel was synthesised with various of catalyst weight and reaction temperature. The result of biodiesel was obtained 76.40% with 4% CaO catalyst weight for 3 hours at ratio mol oil methanol 1:12 and reaction temperature at 65±2 °C.
DAMPAK KEBERADAAN SARANG RAYAP TERHADAP SIKLUS NITROGEN PADA LAHAN GAMBUT TERDEGRADASI DI DESA TANJUNG LEBAN KABUPATEN BENGKALIS Fransisca '; Tengku Ariful Amri; Sofia Anita
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

Peat soil in the Bengkalis Regency, Riau Province,  degrades partially due to fires and land clearing so that decreases soils fertility. Therefore, a solution is needed to increase the fertility of peatlands. This study aimed to understand the effect of termite nest presence on nitrogen cycle at the degraded peatlandecosystem in the Tanjung Leban Village, Bengkalis Regency. The measured parameterswere the amount of ammonium (NH4+) and nitrate (NO3-) ions in soil samples around termite nests, and they were analyzed using an Auto-analyzer. The analysis results of 10 termite nests indicated that the highest values of NH4 + and NO3-ions were in soil samples S8and S 10, respectively. In addition, the other soil samples and control didnot show a significant difference. Based on this results, we concluded that the termite nests in the study sites generally did not significantly affect the nitrogen cycle in thatarea. This results were based on the analysis of variance (ANOVA) and Duncan's test at α=0.05.
POTENSI ARANG AKTIF TULANG SAPI SEBAGAI ADSORBEN ION TIMBAL, KADMIUM, NITRAT DAN KLORIDA DALAM LARUTAN Ayu Antika; Sofia Anita; Tengku Abu Hanifah
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Cow bone can be used as raw material of craft. Based on the development of science and technology cow bone can be utilized for many purposes, for example, it could be as an adsorbent. Cow bone can also be used as an activated charcoal, because bone contains about 35% of organic compounds. Activated charcoal was made of cow bone through carbonization and activation processes. The activation process used Na 2 CO 3 as an activator which the concentration is 2,5%, 5% and 7,5%. In this experiment, activated carbon of cow bone was used to adsorbed is cadmium, lead, nitrate and chloride ions in solution. Cadmium and lead were analyzed using atomic absorption spectrophotometer (AAS), while chloride was analyzed using Argentometry Mohr method and nitrate was analyzed using Brusin Sulfate method. The adsorption capacity of the activated charcoal cow bones to cadmium, lead, nitrate and chloride ions are 99.9643%, 99.9481%, 90.5885% and 10.145% respectively.
ANALISIS KANDUNGAN LOGAM TIMBAL PADA SAYUR KANGKUNG DAN BAYAM DI JALAN KARTAMA PEKANBARU SECARA SPEKTROFOTOMETERI SERAPAN ATOM Pinta Erdayanti; Tengku Abu Hanifah; Sofia Anita
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Vegetable has a lot of vitamins and minerals that useful for people. Therefore, hygiene and safety of vegetables consumed are important for healthiness. Many types of vegetables that circulated in the community were unsafe because allegedly contaminated with heavy metals such as lead, especially the vegetables planted in the roadside. The aims of this study is to determine the metal content of Pb in vegetable water spinach, spinach and soil sample which planted in Kartama street Pekanbaru. Lead content was determined using an atomic absorption spectrophotometer at the wavelength of 283.3 nm. The results showed that the highest of Pb was found in spinach (0.4234 mg/Kg) and soil sample that the spinach planted (1.6418 mg/Kg) was taken from ST1. The result of this study indicates that the sample spinach contains Pb that did not exceed the maximum limit of standar nasional (SNI 01-7387-2009) that is 5 mg/Kg and soil sample is 10 mg/Kg.
MAKNA RE-MARRIED BAGI PASANGAN DUDA DAN JANDA DI GAMPONG ANEUK LAOT DAN KUTA TIMUKECAMATAN SUKAKARYA SABANG Sofia Anita; Khairul yadi
Jurnal Ilmiah Mahasiswa Fakultas Ilmu Sosial & Ilmu Politik Vol 3, No 2 (2018): Mei 2018
Publisher : Jurnal Ilmiah Mahasiswa Fakultas Ilmu Sosial & Ilmu Politik

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Abstract

                                              ABSTRAKPenelitian ini bertujuan untuk mengetahui pemaknaan pasangan duda dan janda terhadap pernikahannya dengan pasangan yang baru (Re-Married), serta tindakan sosial dari masyarakat ketika mereka berstatus duda dan janda di Gampong Aneuk Laot dan Kuta Timu Kecamatan Sukakarya Sabang. Penelitian ini merupakan penelitian kualitatif deskriptif. Teknik pengumpulan data menggunakan teknik wawancara mendalam.Penentuan subjek penelitian dilakukan dengan menggunakan teknik purposive sampling, yakni teknik yang memilih informan dengan sengaja mengacu kepada tujuan dan objek dari penelitian. Hasil penelitian menunjukkan bahwa pasangan duda dan janda menikah lagi terutama dorongan yang kuat datang dari masyarakat, dimana masyarakat memberikan konotasi negatif terhadap janda dan faktor ekonomi juga menjadi seorang janda menikah lagi, namun sebaliknya tidak terhadap seorang duda. Re-Married juga bisa datang dari dorongan anak yang sudah tumbuh dewasa dan memiliki keluarga sendiri, anak tersebut memikirkan orang tuanya yang hidup sendiri dan menyarankan orang tuanya untuk menikah lagi agar ada teman hidup untuk menjalankan harihari tua. Anak yang masih dalam masa pertumbuhan dan membutuhkan bimbingan dari orang tua lengkap juga menjadi salah satu dorongan duda dan janda untuk menikah lagi (Re-Married).Kata Kunci: Makna, Re-Married, Duda dan Janda. RE-MARRIED MEANING FOR DUDA AND JANDA PARTIES IN GAMPONG ANEUK LAOT AND KUTA TIMUKECAMATAN SUBJECT SABANG                                               ABSTRACTThe purpose of this research is to know the meaning of the couple of widower and widow to their marriage with new partner (Re-Married), and social action from the society when they are widower and widow in Gampong Aneuk Laot and Kuta Timu Sukakarya Sabang District. Descriptive qualitative type research. Data collection techniques using in-depth interview techniques. The determination of research subjects conducted by using purposive sampling technique, ie techniques that choose informants intentionally referring to the objectives and objects of research. The results show that couples and widows marry again especially strong encouragement coming from society, where society gives negative connotation to widow and economic factor also become widow married again, but vice versa not to a widower. Re-Married can also come from the encouragement of a child who has grown up and has a family of his own, the child thinks of his own living parent and advises his parents to marry again to have a life friend to run the old days. Children who are still in their infancy and need guidance from a complete parent also become one of the encouragement of widower and widow to remarry (Re-Married)Keywords: Meaning, Re-Married, Widower and Widow.
Bioetanol from Nipa Fibrous Waste (Nypa fruticans) Using Variation of Enzimatic Hydrolysis Method Reni Yuliandani; Sofia Anita
Sistem Informasi Vol 13 No 1 (2022): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v13i1.4022

Abstract

Nipa waste from the nira harvest is a fibrous waste that no further processed by the people of Sabak Auh Village, Siak. Even though it has the potential to use as spent-resources product. It has high economic value. The nipa waste content was lignin which can be processed to produce second generation of bioethanol. It is an alternative material to substitute or mixture of petroleum. Bioethanol made in several stages, sample preparation, pretreatment, hydrolysis, fermentation and purification using distillation process. The purpose of this study was to compare the enzymatic hydrolysis process and acid in producing high-purity bioethanol. Hydrolysis process using white rot fungus extract as an enzyme and 1.5 N HCl solution (acid) as a hydrolyzing agent. The fermentation stage was used Saccharomyces cerevisiae yeast to convert glucose into bioethanol. Based on the results of the research, the hydrolysis process using enzymes was better of hydrolysis in producing bioethanol rather than acid. The highest purity was 11.78%, while bioethanol produced from the acid hydrolysis process had a purity level of 3.4%.
Co-Authors ', Syamberah -, Itnawita . Zulfan Absus, Suharsimi Abu Hanifah Agrina, Agrina Anak Agung Istri Sri Wiadnyani Ayu Antika Azzah Rawani Bayu Eka Utama Bintal Amin Darwis Darwis Darwis, Darnita dedi irawan Defrianto Defrianto Desi Hidayanti Muas Dewi, Nur Oktri Mulya Dian Agmalia Edo Furnando Elda Nazriati Emrizal Mahidin Tamboesai Fransisca ' Ganis Fia Kartika Hamid, Ardiansyah Harianja, Ronitua Saut Marito Harianja, Ronitua Saut Marito Helvitri Helvitri Imani, Rafki Indriani Zulfan Irham Siregar Itnawita Itnawita, Itnawita Jayawarsa, A.A. Ketut khairul yadi Khamidah Khamidah Laksono Trisnantoro Laurency, Sonya Ostha Mari Rezki Melia Lusiana Mirna Ilza Mubarak Mubarak Muhammad Reza Pahlevi Mukhlis Nola Oktaria NURHAYATI ' NURUL HIDAYAH Pinta Erdayanti Rabin, Mohammed Fisal Rasoel Hamidy Reni Yuliandani Rini, Ari Sulistyo Rozi, Fakhru Safutra, Yonda Saktioto Saktioto Silvera Devi Siti Zahrah Soerbakti, Yan Sofyan Husein Siregar Sukendi Sukendi Syafruddin Nasution T. Abu Hanifah T. Edy Sabli Teddy Irawan Tengku Abu Hanifah Tengku Ariful Amri Tengku Emrinaldi ULUL AZMI Vivi Roza, Vivi Wahyu Hardinsyah Putra, Wahyu Hardinsyah Yanova, Shally Yusni Ikhwan Siregar Zafnil Helmi Zahroh, Siti