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Browsing by Author "Bali, Subardi"

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ADSORPSI ARANG AKTIF SABUT PINANG (Areca cathecu L) MENGGUNAKAN AKTIVATOR H2SO4 TERHADAP ION LOGAM KADMIUM (Cd2+) DAN TIMBAL (Pb2+)
(2016-10-19) Syauqi, Muhammad Ridho; Bali, Subardi; Itnawita
Fibers nut activated charcoal has been used as an adsorbent to remove cadmium (Cd2+) and lead (Pb2+) ions in solution; The activated charcoal of fibers nut was made by carbonization at 400oC for ± 2 hours and chemical activation using various concentration of H2SO4 (2.5; 5.0 and 7.5%). The characterization result showed that fibers nut activated charcoal using H2SO4 7.5% had 2,69% of moisture contain, 0.92% of ash content, 667,59 mg/g of iodine adsorption, 4,62 mg/g of methylene blue adsorption and 17,12 m2/g of surface area. Adsorption ability of the activated charcoal was analyzed in variation concentration of cadmium and lead solution for 24 hours and measured using Atomic Absorption of Spectrophotometer (AAS). The result showed the adsorption efficiency of activated charcoal of fibers nut for cadmium (Cd2+) ion was 69,58% at initial concentration 8,58 ppm and for lead (Pb2+) ion was 97,89% at initial concentration 22,80 ppm.
ANALISIS DAYA SERAP SABUT KELAPA SAWIT TERHADAP BESI, KALSIUM, KLORIDA DAN ZAT ORGANIK PADA AIR LINDI TPA MUARA FAJAR PEKANBARU
(2014-03-27) Hidayati, Lisma; Abdullah, Chainulfiffah; Bali, Subardi
Palm fruit fiber is one of the solid waste which is derived from the processing of palm oil industry. Palm fruit fiber is also a plentiful waste but has not been used optimally. The ability of the palm fruit fiber and palm fruit fiber charcoal in removing Fe, Ca, Cl and organic compounds was investigated from leachate in TPA Muara Fajar Pekanbaru. Palm fruit fiber can be applied as adsorben because it contains 28.28% cellulose and 27.86% lignin. The concentration of iron was analyzed by AAS. calcium and organic compounds were analyzed with titrimetry method, and chloride was analyzed by argentometry method. The result showed that adsorption capacity of the palm fruit fiber for iron was 0.1035 mg/g, calcium 23.5427 mg/g, chloride 0.3402 mg/g and organic compounds 0.8848 mg/g. The adsorption capacity of the palm fruit fiber charcoal for iron was 0.0429 mg/g, calcium 36.2011 mg/g, chloride 0.5108 mg/g, and organic compounds 0.9500 mg/g. The efficiency percentage of the palm fruit fiber were found to be 29.36% to iron, 35.22% to calcium, 24.99% chloride and 56.00% to organic compounds. Whereas the efficiency percentage of the palm fruit fiber charcoal were 12.16% to iron, 54.15% to calcium, 37.52% to chloride and 60.13% to organic compounds. The result showed that the adsorption capacity and efficiency percentage of palm fruit fiber charcoal were greater than the palm fruit fiber. Based on statistical method (paired t test), it is found that palm fruit fiber and palm fruit fiber charcoal were effective to remove iron, calcium, and organic compounds but not for chloride
ANALISIS KANDUNGAN FORMALDEHID DALAM MINUMAN YOGHURT PADA KEMASAN PLASTIK POLYETHYLEN TEREFTALATE (PET) DAN HIGH DENSITY POLYETHYLEN (HDPE)
(2013-07-01) Bali, Subardi; Hilda Sari, Amelia; Hanifah, Abu
Polyethylene tereftalate (PET) dan high density polyethylene (HDPE) merupakan bahan kemasan yang biasa digunakan untuk minuman yoghurt. Kemasan ini memiliki kelemahan, karena terjadinya migrasi zat monomer pada plastik ke dalam minuman selama penyimpanan. Salah satu kemungkinan monomer yang dapat terbentuk adalah formaldehid akibat aktivitas mikroorganisme dan asam yang tinggi selama waktu penyimpanan. Konsumsi makanan yang terkontaminasi formaldehid secara terus menerus dapat mengakibatkan kerusakan hati, ginjal, jantung dan berpeluang terkena penyakit kanker. Penelitian bertujuan untuk menentukan kandungan formaldehid dalam minuman yoghurt yang dikemas dengan plastik PET dan HDPE berdasarkan variasi waktu penyimpanan. Analisis kandungan formaldehid dilakukan berdasarkan variasi waktu penyimpanan (dalam kulkas bersuhu 40C) mulai awal waktu pemasaran 0 hari sampai 70 hari. Penentuan kandungan formaldehid dilakukan dengan spektrofotometer UV-Vis (570 nm) dengan menggunakan Reagen Schiff’s. Hasil penelitian menunjukkan bahwa lama penyimpanan berpengaruh terhadap kandungan formaldehid dalam minuman yoghurt. Kandungan formaldehid dalam minuman yoghurt yang disimpan selama 70 hari menunjukkan hasil yang tertinggi kemasan plastik PET (1,488 mg/L) dan HDPE (3,250 mg/L). Nilai ambang batas (NAB) kandungan formaldehid dalam bahan makanan dan minuman yang diperbolehkan berdasarkan IPCS (International Programme on Chemical Safety) dan tiga lembaga organisasi di PBB (ILO, UNEP dan WHO) adalah 1 mg/L. Dengan demikian, kadungan formaldehid yoghurt pada kemasan PET telah melebihi NAB setelah penyimpanan lebih dari 60 hari. Kandungan formaldehid dalam minuman yoghurt pada kemasan HDPE telah melebihi NAB setelah penyimpanan lebih dari 30 hari.
ANALISIS RESIDU PESTISIDA ORGANOFOSFAT, KLORIDA DAN FOSFAT PADA TANAMAN BUNGA KOL (Brassica oleracea L. grup Botrytis) DI PERKEBUNAN KOTO BARU PADANG PANJANG SUMATERA BARAT
(2016-05-10) Arisaputri, Reny; Itnawita; Bali, Subardi
Pesticide is not only used to control pest and plant deseases, but its residue will also give negative influence. Pesticide residues were analyzed by Gas Chromatography with FPD detector. The results showed that the residue of diazinon found in cauliflower at Koto Baru was ranged from 0.0309 to 0.0654 mg/kg. Its concentration was under MRLs diazinon (0.5 mg/kg). The diazinon residues was reduced in cauliflower from 17 to 54% after normal water washing and from 23 to 100% by hot water washing. The rinse water treatment for phosphate were in the range of 1.193-1.789 ppm (normal water) and 21.560-88.530 ppm (hot water), while the chloride concentration were in the range of 0.1133-0.2266 ppm (normal water) and 0.3777-0.7554 ppm (hot water).
ANALISIS RESIDU PESTISIDA ORGANOFOSFAT, KLORIDA DAN FOSFAT PADA TANAMAN SELEDRI (Apium graveolens L.) DI PERKEBUNAN PADANG LAWEH SUMATERA BARAT
(2016-10-12) Fitriani, Eca; Fitriani; Bali, Subardi
Pesticide residues for three kinds of active ingredient (diazinon, chlorpyrifos and profenofos) in celery (Apium graveolens L.) which have been taken from Padang Laweh Field, West Sumatera, were analyzed using Gas Chromatography. Results showed that were no pesticide residues found in all samples with or without washing. Concentration of phosphate and chloride ions in fresh and hot washing water was ranged from 2.6601 to 4.8890; 0 to 0.3760; 4.0640 to 32.6600 and 0.2280 to 0.4880 ppm, respectively.
ANALISIS TEMBAGA, SENG DAN pH DALAM AIR MINUM PDAM CABANG BENGKALIS
(2013-07-01) Itnawita; Bali, Subardi
Untuk memenuhi kebutuhan akan air minum Pemerintah Kabupaten Bengkalis mendirikan Perusahaan Air Minum Daerah (PDAM) yang sumber air bakunya adalah air gambut yang terletak di Desa Wonosari Timur, Kecamatan Bengkalis. Hasil pengamatan di lapangan menunjukkan bahwa belum adanya pemeriksaan secara kontinyu terhadap kualitas air yang dihasilkan oleh PDAM Cabang Bengkalis. Penentuan kandungan tembaga dan seng menggunakan spektrofotometer UV-Vis, untuk tembaga menggunakan metoda neokuproin sedangkan seng dengan metoda ditizon. Hasil analisis menunjukkan kandungan tembaga dan seng dalam air baku secara berturut-turut 0,0120 mg/L dan 0,0483 mg/L, dalam air produksi tidak terdeteksi dan 0,0193 mg/L dan dalam air distribusi tidak terdeteksi dan berkisar 0,0096-0,0193 mg/L. Hasil ini menunjukkan kandungan tembaga dan seng dalam air minum PDAM Cabang Bengkalis masih berada dibawah kadar maksimum yang diperbolehkan berdasarkan Peraturan Pemerintah RI No.82 Tahun 2001tentang kriteria mutu air dan KEPMENKES RI No. 907/ MENKES/SK/VII/2002 tentang syarat-syarat dan pengawasan kualitas air minum, sedangkan pHnya berada dalam rentang pH yang ditetapkan.
BEBAN PENCEMARAN LOGAM BERAT Cd DAN ION NITRAT DARI LIMBAH TAMBANG EMAS TERHADAP AIR SUNGAI SINGINGI KABUPATEN KUANTAN SINGINGI PROVINSI RIAU
(2014-03-27) Handoko; Bali, Subardi; Hanifah, T. Abu
Discovery of natural resources such as gold in Kuantan Singingi Riau province increased the gold mining in the watershed singingi which break the balance of ecosystem. Accumulation of Cd causes kidney disfunction and cause injury on nose duct. A high concentration of nitrate ion causes an uncontrolled growth of algae and other plants which decreased the concentration of oxygen dissolved in water. In this study, the contribution of heavy metal Cd and nitrate to Singingi river’s water was analyzed. The concentration of Cd was determined by Atomic Absorption spectrophotometry, while nitrate ion was determined by the brucine sulfate method and analyzed by visible spectrophotometer. Water samples were taken at 10 stations along the river singingi. The results showed that the Cd content was not detected, while the highest nitrate content was found in the 10th station, i.e. 1.582 ppm
KANDUNGAN LOGAM BERAT (TIMBAL, KADMIUM), AMONIAK, NITRIT DALAM AIR MINUM ISI ULANG DI PEKANBARU
(2013-07-01) Bali, Subardi
Telah dilakukan penelitian sifat fi sis dan sifat kimia logam berat (Pb dan Cd), amoniak, dan nitrit dari sampel air baku dan air minum isi ulang (AMIU) di depot AMIU Pekanbaru. Hasil penelitian menunjukkan bahwa air baku dan AMIU yang dihasilkan, secara kimia masih bersifat asam. Air baku dan AMIU mengandung logam berat yang sangat tinggi untuk logam Pb berkisar antara 0,11-0,55 ppm untuk air baku dan 0,11-1,87 ppm untuk air minum isi ulang. Sedangkan untuk logam Cd berkisar antara 0,22-0,52 ppm untuk air baku dan 0,44-0,54 ppm untuk AMIU. Untuk kadar amoniak baik untuk air baku maupun untuk AMIU tidak terdeteksi, sedangkan untuk nitrit untuk air baku dan AMIU secara berturut-turut 0,18-0,28 ppm dan 0,04-0,28 ppm. Hasil ini menunjukkan bahwa kandungan logam Pb dan Cd dalam AMIU melebihi standar dan amoniak dan nitrit masih berada dibawah standar yang ditetapkan oleh KEPMENKES RI No. 907/MENKES/SK/VII/2002.
KORELASI KADAR ERITROMISIN YANG DITENTUKAN SECARA KROMATOGRAFI CAIR KINERJA TINGGI DENGAN POTENSI HAYATI
(2013-07-01) Bali, Subardi
Telah diteliti korelasi penentuan kadar eritromisin secara kromatografi cair kinerja tinggi dibandingkan dengan penentuan potensi hayati secara mikrobiologi. Penentuan secara kromatografi cair kinerja tinggi dengan kolom Capcell Pak C18 UG120 ukuran diameter 4,6 mm dan panjang 250 mm, dan fase gerak campuran dapar kalium fosfat dibasa 0,02 M pH 9,0 : asetonitril (50 : 50), kecepatan alir 1 ml/menit dan detektor UV-Vis pada λ 205 nm dan temperatur 50°C. Sedangkan potensi hayati diuji terhadap bakteri Micrococcus luteus ATCC 9341 dengan metode difusi. Setelah dilakukan validasi untuk ketepatan, presisi dan linieritas untuk metode KCKT rata-rata peroleban kembali (recovery) 99,77 %, rata-rata basil analisis dengan hasil sebenarnya 0,2236 %, rata-rata selisih secara statistik 0,1814 %, SD 0,5111, RSD 0.6125 % dan r = 0,9993 dan Potensi Hayati rata-rata recovery 101,16 %. rata-rata hasil analisis dengan basil sebenarnya 0,9617 %, rata-rata selisih secara statistik 0,2920 %, SD 1,554, RSD 1,5361 % dan r = 0,9994. Dari uji t-student tidak terdapat perbedaan yang bermakna antara koefisien korelasi luas kromatogram KCKT dengan koefisien korelasi diameter hambatan Potensi Hayati. Ketervariasian dari hasil penentuan kadar eritromisin dengan metode KCKT dengan nasil yang diperoleh menggunakan Potensi Hayati tidak terdapat perbedaan yang signifikan. Hasil percobaan menunjukkan ternyata terdapat korelasi antara kadar eritromisin dengan KCKT dan Potensi Hayati yaitu dengan naiknya kadar eritromisin akan menyebabkan baik luas kromatogram maupun diameter daerah hambatan akan bertambah dengan koefisien korelasi r = 0,9976. Dari basil penelitian ini menunjukkan hahwa ternyata penentuan kadar eritromisin dengan metode KCKT memberikan hasil yang ketepatan dan presisinya baik.
METODE ANALISIS KUANTITAF ERITROMISIN STEARAT SECARA SPEKTROFOTOMETRI UV-VIS SETELAH PENAMBAHAN GENTIAN VIOLET
(2013-07-01) Bali, Subardi; Westi
The research about validation of quantitative analysis method of erythromycin stearate using spectrophotometry UVVis after added of gentian violet has been carried out. The measurement was done at wavelength 637 nm in methanolborate buffer (40:60). Result show that the mean of recovery was 100,826% (w/w), the difference of level after several measurement was 0,637% and difference mean statistically was 0,159%, SD 1,751 and KV 1,736%, the regression equalization y = -0,0456 + 0,001347; regression (r) 0,999, Sy/x 0,0099, limit of detection was 20,668 μg/ml and limit of quantitative was 68,894 pg/ml. The quantitative analysis of erythromycin stearate tablet observed that the mean of recovery was 99,176% (w/w), SD 0,958 and KV 1,736%. The result of the experiment showed that this method was valid as quantitative analysis method for erythromycin stearate.
PEMANFAATAN ARANG AKTIF CANGKANG BIJI MANGGA GOLEK (Mangifera indica) SEBAGAI ADSORBEN ION KADMIUM (II) DENGAN AKTIVATOR Na2CO3
(2016-10-19) Hariyani, Silvy; Bali, Subardi
Mango seed shell can be used as an adsorbent because it contains celluloses, hemicelluloses and lignin. In this study, the activated charcoal of mango seed shell was made in two stages that were carbonization at temperature of 400oC and activation using Na2CO3 with various concentration of 2.5; 5.0 and 7.5%. The characterization result showed that activation using 2,5% Na2CO3 gave a good characteristics with 4.10% of moisture content, 2.48% of ash content, 491610 mg/kg of iodine adsorption and 14695 mg/kg of methylene blue. The activated charcoal at concentration of 2.5% Na2CO3 were contacted with various concentration cadmium solution for 24 hours and analyzed with Atomic Absorption of Spectrophotometer with efficiency of adsorption were 97.98%.
POTENSI ARANG AKTIF BAMBU BETUNG (Dendrocalamus asper) SEBAGAI ADSORBEN ION Mn2+ DAN NO3- DALAM AIR SUMUR BOR BURUK BAKUL, BENGKALIS
(2016-05-02) Putri, Elmita Eka; Anita, Sofia; Bali, Subardi
The aim of this research was to determine the optimum ability of activated char of bamboo (Dendrocalamus asper) with variations concentration of Na2CO3 (2.5%, 5% and 7.5%) to adsorp Mn(II) (SNI 6989.16-2009) and nitrate (SNI 6989.8-2009) in the water sample, by doing preparation and characterization of activated char, analysis of boreholes water, and adsorption analysis. Activated char of bamboo was optimum by using 5% of Na2CO3.Characterization results showed that moisture content, ash content, and surface area was 3.05%, 3.67%, and 74.52 m2/g respectively. Adsorption of Mn(II) and nitrate was determined by using Atomic Adsorption of Spectrofotometer (AAS) and Spectrophotometer UV-Vis, respectively . The results showed that the optimum adsorption of activated char of bamboo for Mn(II) and nitrate ions was 74.57% and 60.60%, respectively.
POTENSI ARANG AKTIF BAMBU BETUNG (Dendrocalamus asper) SEBAGAI ADSORBEN ION Zn2+ DAN SO42- DALAM AIR SUMUR BOR BURUK BAKUL, BENGKALIS
(2016-05-10) Hartati, Revi; Anita, Sofia; Bali, Subardi
Bamboo (Dendrocalamus asper ) can be used as an activated char since it has a high carbon content i.e. 47.6%. Activated char of bamboo was made from carbonization and activation processes, which used Na2CO3 activator with concentration variation of 2.5%, 5%, and 7.5%, respectively. In this study, the activated char bamboo with the variation of Na2CO3 concentration were characterizated and it was obtained that the optimum concentration of Na2CO3 was 5% with 3.05% of moisture content, 3.67% of ash content, and surface area was 74.52 m2/g. The activated char bamboo with 5 % Na2CO3 was tested to adsorp the ion of zink (SNI-6989.7:2009) and sulphate (SNI 06-2426-(1991) of boreholes water. Zink and sulphate content were analyzed using Atomic Absorption of Spectrofotometer (AAS) and Spectrofotometer UV-VIS, respectively. The results showed that the optimum adsorption of activated char of bamboo for zink and sulphate ion were 68.061% and 57.445%, respectively
POTENSI ARANG AKTIF CANGKANG BUNGA PINUS SEBAGAI ADSORBEN ION KADMIUM (II) DAN TIMBAL (II) DENGAN AKTIVATOR H2SO4 DALAM LARUTAN
(2016-05-16) Manullang, Stefani Agnessia; Bali, Subardi; Itnawita
Pine cone activated carbon has been used as an adsorbent to remove cadmium ions (II) and lead (II) in solution; it was made from carbonization and activation process using H2SO4 with variation concentration of 2.5, 5.0 and 7.5%. The characterization result showed that pine cone activated carbon using H2SO4 7.5% had 3.74% of moisture contain, 0.58% of ash content, 261.67 mg/g of iodine adsorption and 18.04 m2/g of surface area. Absorption ability of the activated carbon was analyzed in variation concentration of cadmium and lead solution for 24 hours and measured using Atomic Absorption of Spectrophotometer (AAS). The result showed that adsorption efficiency of unactivated pine was better i.e., 99.25% at concentration of 2.52 ppm for cadmium (II) ion and 100% at concentration of 1.53 ppm for lead (II) ion.
POTENSI ARANG AKTIF DAGING BUAH SALAK PADANG SIDEMPUAN (Salacca Sumatrana) SEBAGAI ADSORBEN ION Cd(II) DAN ION Pb(II) DENGAN AKTIVATOR Na2CO3
(2016-05-16) Angraini, Rezi Dwi; Bali, Subardi; Anita, Sofia
The activated carbon of snake fruit was made in two step i.e., carbonization at 400°C and activated with Na2CO3 with various concentration of 2.5; 5.0 and 7.5%. Characterization result showed that activation using 2.5% Na2CO3 produced the best characteristics with 5.02% of moisture content, 3.58% of ash content, 269.66 mg/g of iodine absorption and 53,16 m2/g of surface area. The activated carbon (2.5% Na2CO3) was contacted with various concentration of cadmium and lead for 24 hours and analyzed with Atomic Absorption of Spectrophotometer with efficiency of adsorption were 98.80% and 99.41%.
POTENSI ARANG AKTIF DARI KULIT JERUK MEDAN (CITRUS SINENSIS (L) OSBECK.) SEBAGAI ADSORBEN ION KADMIUM (II) DAN TIMBAL (II) DALAM LARUTAN
(2016-10-19) Rahmaniah; Anita, Sofia; Bali, Subardi
Orange peel was investigated as adsorbent in activated carbon with variation of sodium hydroxide concentration (2.5%, 5%, and 7.5%) . The characterization result showed that activated carbon of orange peel with 7,5% sodium hydroxide have 1.2% of moisture contain, 3.96% of ash content, 659.7703 mg/g of iodine adsorption and 39.125 m2/g of surface area. The presence of functional groups in orange peel activated carbon was confirmed by FT-IR Spectroscopy. Orange peel activated carbon was reacted with variation of concentration cadmium and lead solution for 24 hours and analyzed with Atomic Adsorption of Spectrophotometer. It was found that adsorption efficiency for cadmium and lead was 98.09% and 99.66% respectively

Browsing by Author "Bali, Subardi"

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