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All Journal Jurnal Teknologi Kimia Unimal Aceh International Journal of Science and Technology
Ahmadi Ahmadi Ahmadi
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Industrial & Manufacturing Engineering

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OPTIMASI ADSORPSI LOGAM BERAT Pb (II) MENGGUNAKAN MODIFIKASI BENTONIT TERPILAR POLIKATION Al MENGGUNAKAN RSM BOX – BEHNKEN DESIGN Jakfar Jakfar; Nasrullah Nasrullah; Mukhlisien Mukhlisien; Ahmadi Ahmadi
Jurnal Teknologi Kimia Unimal Vol 12, No 1 (2023): Jurnal Teknologi Kimia Unimal - Mei 2023
Publisher : Chemical Engineering Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jtku.v12i1.13167

Abstract

Salah satu logam berat yang sangat berbahaya yaitu  logam berat timbal atau Pb(II), ion logam berat banyak dibuang ke badan air dan sangat membahaya lingkungan hihup , krarena dapat merusak otak/ saraf dan ginjal dan berbagai penyakit lainnya.Penelitian ini  bertujuan  mempelajari pengaruh konsentrasi ion Pb(II) (10-400 mg/L), konsensentrasi asam sirat  (0,2-0,6 M), waktu agitasi (30-120 menit)m dan suhu (30-70 oC) terhadap kapasitas serapan ion Pb(II) dan efisiensi penyerapan (%)  dengan metode adsorpsi menggunakan bentonit terpilar Al (Al- penyerapan Hasil penelitian menunjukkan pengaruh konsentrasi adsorbat ion Pb(II), konsentrasi asam sitrat , waktu agitasi dan suhu terhadap kapasitas serapan dan efisiensi penyerapan sangat signifiklan. yang sering digunakan yaitu metode adsorpsi dengan menggunakan  bentonit terpilar Al. Pada penelitian ini variasi konsentrasi logam berat Pb(II) yang digunakan yaitu sebesar 10= 400, ppm untuk dicampur kan ke dalam bentonit sebanyak 5 gram kemudian diaduk dengan reaktor berpengaduk selama waktu yang telah ditentukan. Setelah itu campuran disaring dan diambil filtrat nya untuk di analisa kandungan logam yang tersisa. dengan NaOH 0,5 M dan 250 ml AlCl3 0,1 M.didiamkan selama 24 jam kemudian dimasukkan ke dalam Furnace selama 12 jam. Variabel Proses pada penelitian ini adalah variasi konsentrasi logam pemilar.  Pengaruh konsentrasi awal Pb (II), asam sitrat, waktu agitasi dan suhu adsorpsi terhadap kapasitas  adsorpsi ion Pb(II)  efisiensi dan interaksinya sasangat signifikan. Optimasi tercapai pada konsentrasi Pb (II) awal 241, 494 mg/l, asam sitrat 65,46 %. Waktu agitasi 75 menit, Temperatur 54,5 oC, kapasitas adsorpsi 21,76 mg/g dan efisiensi 87 % 986, 92 %)
Development of Sour Flavored Noni Juice Using Lactic Acid Compound as a Fermentation Media and Optimation Jakfar*, Jakfar; Husin, Husni; Nasution, Fahrizal; Ahmadi, Ahmadi
Aceh International Journal of Science and Technology Vol 12, No 3 (2023): December 2023
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.12.3.34068

Abstract

Conventional noni juice production was placing ripe noni fruits into a juice collection vessel for two months or longer. During this time, the noni juice separates (drips) gradually from the pulp. Recent studies have shown that acid catalysts have advantages over conventional noni juice production. This method uses a lactic acid catalyst for the fermentation of noni fruit. The focus of this research is to optimize the effects of various concentrates of Aceh noni X1 (1020 ml), lactose from UHT (ultra-high temperature) milk, and Yakult as a source of Lactobacillus casei X2 (1025 ml) and X3 (2.510 ml). The response variables used were lactic acid levels (Y1, %) and protein levels (Y2, %). The influence of the three individual variables X1, X2, and X3 on the response variables Y1 and Y2 is significant at the 95% confidence level (0.05), but the interaction effect is not significant. Optimal conditions are carried out at the maximum design limits X1, minimum X2, minimum X3, maximum Y1, and maximum Y2 according to the consideration of material prices, and optimal conditions are achieved at each X1 = 20 ml, X2 = 10 ml, X3 = 15.26 ml, Y1 = 1.23% and Y2 = 2.31%, and desirability of 0.92. The lactic acid compound was a fermentation medium for the noni juice-making media. Thus, lactic acid can be believed to be a potentially promising catalyst for producing noni juice while providing economic opportunities and adding value to the noni plant industry.
Co-Authors Husni Husin jakfar jakfar Jakfar*, Jakfar Mukhlisien Mukhlisien Nasrullah Nasrullah Nasution, Fahrizal