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Akmal Mukhtar
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Mathematics

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APLIKASI KOAGULAN CAIR HASIL EKSTRAKSI 0,4 MOL H2SO 4 UNTUK PENGOLAHAN AIR GAMBUT Catrain Susanty; Muhdarina '; Akmal Mukhtar
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

Clay is an abundant natural product that has  been used  in various fields, one of them as a    coagulant in water treatment. Cengar clay contains  aluminium and iron that can be extracted to be liquid coagulant. The liquid coagulant was prepared through extraction of  500o C calcined  Cengar clay  by 0,4 mol  of sulfuric acid at  various temperatures  (30,60,  and 100o C) and extraction times  (1,  2,  and 3 hours).  These coagulants were  applied to coagulation process of peat water. Several  parameters  of peat water  that were analyzed are  turbidity, total dissolve solid  (TDS),  and  total suspended solid  (TSS). The turbidity  result was compared to  PERMENKES RI No.  416/MENKES/PER/IX/1990 “About Requirement and Water Quality Control”,  whereas  TDS and TSS  were compared to  Government Regulation No. 82 of 2001  “About Water Quality Treatment and Water Pollution Control” class  I (raw drinking water). The result showed that liquid coagulants  can  fix  all of  peat water  parameters that  were  analyzed.  The optimum coagulant was K 60-3,  made through extraction at  60o C  for 3 hours, with  removal percentage of turbidity was 82,69%; TSS 94,06%, and TDS 84,75%.
DEGRADASI SENYAWA METANIL YELLOW SECARA FOTOKATALITIK MENGGUNAKAN TiO 2 DAN HNO3 Azkia Alma Ayesha; Akmal Mukhtar; Pepi Helza Yanti
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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Photocatalysis  with  TiO2 -UV  can be  used  to  reduce the content of  waste  dye in the water. Degradation of metanil yellow solution had  been done by photocatalytic using TiO2 as catalyst and  HNO3 as  an oxidator.  Photocatalytic  method used  radiation of  30 watt  UV light  with λ = 437 nm. Degradation of metanil yellow was  done with  several reaction parameters such as time of radiation reaction, mass of  TiO2 , and addition of HNO3. The result of  this research  showed that  metanil yellow 10 ppm  have  degraded 30,755% after 120 minutes radiation,  wheareas  with similiar consentration by addition 0,008  mass of  TiO2 degraded  54,689% with radiation time  up to 45 minutes.  HNO3 as an  oxidator  in degradation without UV radiation can affect the percentage rate of degradation.
Co-Authors Azkia Alma Ayesha Catrain Susanty Muhdarina ' Pepi Helza Yanti