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All Journal Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Atria Martina
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Engineering Mathematics

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UJI EFEKTIVITAS JAMUR Metarhizium anisopliae Cps.T.A ISOLAT LOKAL TERHADAP HAMA RAYAP (Coptotermes curvignathus) Khairunnisa '; Atria Martina; Titrawani '
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

Termites is one of the major pest of oil palm plantations on peatlands. Termite control is generally performed using chemical insectisides. Several chemical insecticides can inhibit termite attack effectively but not effeciently used because it has many negative effects. The negative effect of chemical insecticides can be reduced using biological agents such as entomopathogenic fungus. This research aimed to determine the effectivenes and the best formulation of local isolate of M. anisopliae Cps.T.A and with the addition of 10% zeolite in controling C. curvignathus. The reaserch used Complete Randomized Design (CRD) with three treatments and eight replications. The results showed that density of M. anisopliae Cps.T.A with addition of 10% zeolite was 2,25 x 108 spora/g and M. anisopliae Cps.T.A was 2,50 x 108 spora/g. Germination of M. anisopliae Cps.T.A with 10% zeolite was 91,2% and M. anisopliae Cps.T.A was 88,1%. The treatment of M. anisopliae Cps.T.A produced the highest mortality (100%) of M. anisopliae Cps.T.A with 51% zeolite, whereas the mortality of termite control was only 16%.
Efisiensi Biosorpsi Logam Cr (VI) Menggunakan Spent Mushroom Substrate (SMS) Coprinus Comatus Yang Diaktivasi Oleh NaOH Hany Susanti Pangaribuan; Elvi Yenie; Atria Martina
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Metal Cr (VI) is a heavy metal contained in electroplating wastewater which is very stable and dangerous for the environment and human health. This study aims to determine the ability of SMS C. comatus in removing metal Cr (VI) in electroplating wasteswater with mass 3 grams, biosorption contact time 30 minutes with activation treatment using NaOH (0,3N) and activation time 15,30 and 45 minutes. The allowance made by SMS C. comatus in reducing Cr (VI) in electroplating wastewater with initial concentration of Cr (VI) 47.23 mg/L with the highest efficiency value of 39.02 % in activation time 45 minutes. Keywords: biosorption, Spent Mushroom Substrate (SMS), electroplating wastewater
Efisiensi Biosorpsi Logam Cu(II) Oleh Biomassa Coprinus Comatus Teraktivasi H2SO4 Pope Jessica Sirait; Elvi Yenie; Atria Martina
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Heavy metal Cu(II) which contained in electroplating wastewater is a highly toxic substance and very dangerous for living creatures. The toxicity that these metals carry can lead to chronic, acute, and cancer-causing poisoning. Biosorption with fungi is one of the abatement methods to reduce the metal contaminant in environment. The present study aimed at determining the maximum biosorption capacity and the removal percentage of Cu(II) biosorption by Coprinus comatus. Empty Fruit Bunches(EFB) is used as growing medium of Coprinus comatus then used to adsorb a solution containing heavy metal Cu(II) with concentration 1,62 ppm. The adsorbed metal ion was calculated from metal ion concentration after activated by H2SO4 with variation concentration based on the analysis with Atomic Absorption Spectrophotometry (AAS) method. The result showed that Cu(II) not effectively adsorbed by Coprinus comatus activated by H2SO4 as the biosorbent. Keywords : Biosorption, Coprinus comatus, Activated, H2SO4, Electroplating
Co-Authors Dede Martin Dewi Elfina Elvi Yenie, Elvi Hany Susanti Pangaribuan Ike Yuliana Indira Rahmana Razak Jamhari Jamhari Karina Larasati Khairunnisa ' Lili Yani Novia Lestari Pope Jessica Sirait Rizky Alviodinasyari Rodesia M. Roza Rodesia Mustika Roza Rozalia ' Siti Suryani Tengku Putri Sholihah Titrawani ' Yuharmen '