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All Journal Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam
Tengku Ariful Amri
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Mathematics

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PENGGUNAAN KOMPOSIT KARET ALAM-ARANG AKTIF-PASIR COR UNTUK MENGURANGI KANDUNGAN NITRAT DALAM LARUTANNYA Dyah Ayu Anggraini; Tengku Ariful Amri; Amilia Linggawati
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

Composite is a material made up of two parts, binder (matrix) and filler. This material is widely used in human activities  as water purification media. Composite materials  that used in this study consist of natural rubber as a matrix with filled activated charcoal and sand cast. The composition of the composite is 0% sand  : 100% charcoal (KA), 50% sand : 50% charcoal (KAP), 100% sand : 0%  charcoal (KP). These composites are used to reduce the nitrate content in the nitrate solution  which  have  initial concentration of 5 and 10 ppm. Nitrate contents  before and after passing the composite were analyzed using Brusin sulfate  method. The results showed that the composite rail is more effective at reducing nitrate solution which has initial concentration of 10 ppm at 30o C. In these conditions the composite KA can  reduce the high nitrate content  to 73.38%, while the KAP and KP  can  only reduce nitrate  content  of 69.75% and 53.88% 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.
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.
Co-Authors Amilia Linggawati DYAH AYU ANGGRAINI Edo Furnando Fransisca ' Sofia Anita