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All Journal JURNAL INTEGRASI PROSES Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Jurnal Kimia dan Rekayasa
Yuliani HR
Jurusan Teknik Kimia Politeknik Negeri Ujung Pandang
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Industrial & Manufacturing Engineering Other

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PENENTUAN KONDISI OPTIMAL ELECTROPLATING EMAS PADA BAJA PENINJUAN KUALITAS PELAPISAN HR Yuliani; Pria Gautama; Sukma Abadi
JURNAL INTEGRASI PROSES VOLUME 6 NOMOR 2 DESEMBER 2016
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (890.49 KB) | DOI: 10.36055/jip.v6i2.940

Abstract

Electroplating emas melewati tiga tahap utama yakni pembersihan, aktivasi, dan penyepuhan. Pengrajin emas secara umum melakukan elektropating secara konvensional dengan peralatan terpisah untuk tiap prosesnya, suplai arus listrik dan panas diatur secara manual sehingga terjadi ketidakstabilan pelapisan. Hal ini menyebabkan hasil pelapisan buram dan daya rekat produk elektroplating tidak bertahan lama. Penelitian ini bertujuan mengetahui kondisi optimal electroplating emas terhadap ketebalan lapisan emas. Metode penelitian yang digunakan adalah metode eksperimental menggunakan Automatic integrated immersion system dengan melakukan pengujian ketebalan terhadap benda uji dengan ukuran 4 x 2 x 0.4 cm dengan memvariasikan parameter suhu operasi (30,40,50 dan 60)0C, waktu 8 menit dan arus 0.9 ampere. Hasil penelitian menggunakan Automatic integrated immersion system menunjukan bahwa meningkatnya suhu dan waktu pelapisan maka ketebalan lapisan semakin meningkat dan kehalusan permukaan beragam. Optimasi electroplating yaitu arus 0.9 ampere, waktu electroplating 10 menit dengan tebal lapisan 0.970 μm.
Karakteristik Karbon Aktif Tempurung Kluwak (Pangium edule) Sebagai Adsorben Pada Penjerapan Methylene Blue Andi Musfirah Adhar; Isma Ayu Ningsih Putri Zainal; Farham Farham; Ida Adriani Idris; Haera Setiawati; Yuliani HR
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol 4, No 1 (2022): JPPL, Maret 2022
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v4i1.1091

Abstract

Kluwak (Pangium edule) is a plant that the seeds are used as a seasoning, to produce waste in the form of kluwak shells that the application has not been widely used by the community. This study aims to utilize the carbonized kluwak shell waste as an adsorbent for the absorption of methylene blue, by activating them using potassium hydroxide (KOH) to increase the adsorption ability of the adsorbent. Variations in the concentrations of KOHused are 0, 1, 3, and 5 M and concentrations of methylene blue solution 100, 110, 120, 130, 140, and 150 ppm. The study reviewed how the characteristics of the kluwak shell as an adsorbent on the absorption of methylene blue, including absorption percentage, maximum adsorption capacity through Langmuir equation, adsorbent morphology through Scanning Electron Microscope (SEM) analysis, and surface area. The adsorption process in this study took place in batches for 90 minutes using a shaker with speed of 300 rpm with volume methylene blue solution as much as 50 mL and the weight of the kluwak shell carbon without activation, and KOH 1, 3, and 5 M activated kluwak shell carbon as much as 0.15 g. The results showed that the higher the concentration of KOH, the higher the average adsorption percentage and maximum adsorption capacity. The amount of the average percent absorption, maximum adsorption capacity, and the largest surface area were on the kluwak shell carbon activated by KOH 5 M, were respectively 97.69%; 48.082mg/g; and 174.17 m2/g. The SEM results analysis showed that activated kluwak shell carbon of 5 M KOH had a larger particle size and pore shape, had a more unified shape, and a flake structure than without activation.
Karakteristik Karbon Aktif Tempurung Kluwak (Pangium edule) Sebagai Adsorben Pada Penjerapan Methylene Blue Andi Musfirah Adhar; Isma Ayu Ningsih Putri Zainal; Farham; Ida Adriani Idris; Haera Setiawati; Yuliani HR
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 4 No. 1 (2022): JPPL, Maret 2022
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v4i1.1448

Abstract

Kluwak (Pangium edule) is a plant that the seeds are used as a seasoning, to produce waste in the form of kluwak shells that the application has not been widely used by the community. This study aims to utilize the carbonized kluwak shell waste as an adsorbent for the absorption of methylene blue, by activating them using potassium hydroxide (KOH) to increase the adsorption ability of the adsorbent. Variations in the concentrations of KOH used are 0, 1, 3, and 5 M and concentrations of methylene blue solution 100, 110, 120, 130, 140, and 150 ppm. The study reviewed how the characteristics of the kluwak shell as an adsorbent on the absorption of methylene blue, including absorption percentage, maximum adsorption capacity through Langmuir equation, adsorbent morphology through Scanning Electron Microscope (SEM) analysis, and surface area. The adsorption process in this study took place in batches for 90 minutes using a shaker with speed of 300 rpm with volume methylene blue solution as much as 50 mL and the weight of the kluwak shell carbon without activation, and KOH 1, 3, and 5 M activated kluwak shell carbon as much as 0.15 g. The results showed that the higher the concentration of KOH, the higher the average adsorption percentage and maximum adsorption capacity. The amount of the average percent absorption, maximum adsorption capacity, and the largest surface area were on the kluwak shell carbon activated by KOH 5 M, were respectively 97.69%; 48.082mg/g; and 174.17 m2/g. The SEM results analysis showed that activated kluwak shell carbon of 5 M KOH had a larger particle size and pore shape, had a more unified shape, and a flake structure than without activation.
Methylene Blue Adsorption With KOH Activated Carbon From Kluwak Shell: Adsorpsi Metilen Biru Menggunakan Karbon Tempurung Kluwak Teraktivasi KOH Yuliani HR; Elizabet Alwina; Isma Ayu Ningsih Putri Zainal; Ida Adriani Idris; Haera Setiadi; Andi Musfira Adhar
Jurnal Kimia dan Rekayasa Vol. 2 No. 1 (2021): Jurnal Kimia dan Rekayasa Edisi Juli 2021
Publisher : Program Studi S1 Teknik Kimia, Fakultas Teknik, Universitas Setia Budi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (423.797 KB) | DOI: 10.31001/jkireka.v2i1.20

Abstract

Kluwak is a plant whose meat is used as the main ingredient in making rawon. The flesh is located in the seed which taken of meat, leaves only the shell that has not been utilized and becomes waste. The use of kluwak shell directly as an adsorbent has not been maximized so that it is carbonized and activated using KOH. This study aims to utilize kluwak shell carbon without activation and KOH activation as adsorbent. Adsorption was carried out on methylene blue adsorption with 5 variations of concentration. Variations in KOH concentrations of 0, 1, 3 and 5 M and concentrations of methylene blue 20, 40, 60, 80 and 100 ppm. The study that was reviewed was how the effect of activation on the performance of the adsorbent by determining the Ce value using UV-Vis at a wavelength of 662 nm, calculating the % absorption, and maximum capacity (qm) using the Langmuir equation for each variable. Adsorption took place in a batch system for 90 minutes at a shaker speed of 300 rpm and the weight of kluwak shell carbon without activation (KTKTA) and Activation (KTKA) was 0.15 g. The results showed that the activation can improve the performance of the adsorbent. The average percent adsorbed for 0.15 g of adsorbent, 53.88% KTKTA and 99.96% KTKA. The maximum adsorption capacity (qm) for KTKTA was 15.86 mg/g and 36.19 mg/g for KTKA on 5M KOH activation. AbstrakKluwak merupakan tumbuhan yang dagingnya dimanfaatkan bahan utama dalam pembuatan rawon. Daging terletak dalam biji yang jika diambil isinya maka tertinggal hanyalah tempurung yang belum dimanfaatkan dan menjadi limbah. Penggunaan tempurung kluwak secara langsung sebagai bahan penjerap belum maksimal sehingga dikarbonkan dan diaktivasi menggunakan KOH. Penelitian ini bertujuan memanfaatkan karbon tempurung kluwak tanpa aktivasi dan aktivasi KOH sebagai adsorben. Adsorpsi dilakukan pada penjerapan metilen biru dengan 5 variasi konsentrasi. Variasi konsentrasi KOH 0, 1, 3 dan 5 M dan konsentrasi metilen biru 20, 40, 60, 80 dan 100 ppm. Kajian yang ditinjau yaitu bagaimana pengaruh aktivasi terhadap kinerja adsorben dengan menentukan nilai Ce menggunakan UV-Vis pada Panjang gelombang 662 nm, menghitung % penjeran, dan kapasitas maksimum (qm) menggunakan persamaan Langmuir pada tiap variabel. Adsorpsi berlangsung dengan system batch selama 90 menit pada kecepatan shaker 300 rpm dan berat karbon tempurung kluwak tanpa aktivasi (KTKTA) dan Aktivasi (KTKA) sebanyak 0.15 g. Hasil penelitian menunjukkan bahwa aktivasi dapat meningkatkan kinerja adsorben. Rata rata persen terjerap untuk 0.15 g adsorben, KTKTA 53.88 % dan KTKA sebesar 99.96%. Kapasitas adsorpsi maksimum (qm) untuk KTKTA sebesar 15.86 mg/g dan 36.19 mg/g untuk KTKA pada aktivasi KOH 5M.
KOH Activator Concentration Study on The Capacity and Surface Area of Kluwak Carbon for Methylene Blue Adsorption: Kajian Konsentrasi Aktivator KOH Terhadap Kapasitas Adsorpsi dan Luas Permukaan Karbon Tempurung Kluwak pada Penjerapan Methylene Blue Yuliani HR; Abigael Todingbu’a; Dewi Astuti Herawati; Haera Setiawati; Andi Musfirah Adhar; Isma Ayu Ningsih Putri Zainal; Ida Adriani Idris
Jurnal Kimia dan Rekayasa Vol. 3 No. 2 (2023): Jurnal Kimia dan Rekayasa Edisi Januari 2023
Publisher : Program Studi S1 Teknik Kimia, Fakultas Teknik, Universitas Setia Budi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31001/jkireka.v3i2.47

Abstract

This study aims to determine the effect of KOH concentration on adsorbent performance in the form of adsorption capacity and the surface area of the kluwak shell carbon (CSK) on the uptake of methylene blue (MB). The research variables were variations of KOH 0, 1, 3 and 5M, MB concentrations 80,90,100,120, 130, 140 and 150 ppm at the adsorption process at 30 oC, MB volume 50 ml, the number of activated CSK and without activation 0.15 grams was shaken for 1.5 hours with speed 350 rpm. The solution was filtered to separate the filtrate and the CSK (adsorbent), the absorbance was then measured using the UV-VIS spectrometric at a wavelength of 662 nm, then the absorbance was obtained and then converted using a standard curve to obtain a balanced MB concentration. The test result data was calculated the surface area (A) of the MB adsorption method at 126 ppm and the adsorption capacity (qm) using the Langmuir equation. The results showed that activation could improve the adsorbent performance and the increasing KOH concentration would increase the adsorbent capacity and CSK surface area. CSK activation at 5 M was the highest results then others with A of 151.71m2/ g and qm of 47.05 mg /g compared to CSK without activation in the form of surface area of 70.37 m2/g and adsorption capacity of 15.27 mg /g.AbstrakPenelitian ini bertujuan mengetahui pengaruh konsentrasi KOH terhadap kinerja adsorben berupa kapasitas adsorpsi dan luas permukaan karbon tempurung kluwak (KTK) pada penjerapan methylene blue (MB). Variabel penelitian yaitu variasi KOH 0, 1, 3 dan 5M, konsentrasi MB 80,90,100,120, 130, 140 dan 150 ppm pada proses adsorpsi suhu 30oC, volume MB 50 ml, jumlah KTK ativasi dan tanpa aktivasi 0.15 gram dishaker selama 1.5 jam dengan kecepatan 350 rpm. Larutan disaring untuk memisahkan filtrat dengan KTK (adsorben) selanjutnya filtranya diukur absorbansi menggunakan spekrometri UV-VIS pada Panjang gelombang 662 nm diperoleh absorbansi kemudian dikonversi mengguankan kurva standar didapatkan konsentrasi MB setimbang. Data hasil pengujian dihitung luas permukaan (A) metode adsorpsi MB pada 126 ppm dan kapasitas adsorpsi (qm) menggunakan persamaan Langmuir. Hasil penelitian menunjukkan bahwa aktivasi dapat meningkatkan kinerja adsorben dan semakin meningkatnya konsentrasi KOH maka kapasitas adsorpsi dan luas permukaan KTK meningkat. Aktivasi KTK pada 5 M merupakan hasil tertinggi dengan A sebesar 151.71m2/g dan qm yaitu 47.05 mg/g dibandingkan KTK tanpa aktivasi berupa luas permukaan 70.37 m2/g dan kapasitas adsorpsi senilai 15.27 mg/g.
Preparation and Characteristics of Kluwak Shell Carbon Adsorbent Yuliani HR; Dian Ranggina; Miftahul Janna; Zulham Nurul Fadhila; Arif Budiman
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 9, No 1 (2024): EDISI MARET 2024
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v9i1.5171

Abstract

Kluwak shell carbon (KTK) is a biomass with potential as an adsorbent, containing cellulose, hemicellulose, lignin, and fixed carbon at a content of 92.15%. However, the current utilization of KTK in adsorbing free fatty acids and methylene blue is limited and can be improved through thermal activation at a range of temperatures. The study aims to investigate the impact of activation temperature on CEC by examining the adsorption capacity of methylene blue solution, iodine solution, and surface area. Activation was carried out for 2 hours at temperatures ranging from 500 to 900 C on Kluwak shell carbon. The adsorbent performance of the activated KTKAT was initially tested using methylene solution with a concentration of 50 ppm, a volume of 50 ml, and 0.15 grams of KTKAT. The solution was placed in an orbit shaker for 90 minutes and filtered. The absorbance of the filtrate adsorption results was measured at a wavelength of 662 nm using UV VIS. For the second test, 50 ml of 0.1 N Iodine and 0.5 g KTKAT were stirred for 15 minutes and then centrifuged for approximately 15 minutes. A volume of 10 ml of the resulting iodine solution adsorption filtrate was titrated with 0.1 N Sodium Thiosulfate. The surface area was determined using the BET method. The concentration (ppm) of methylene blue solution was determined by converting the absorbance measurement using the standard curve equation. The iodine number was determined by titrating the iodine adsorption filtrate with sodium thiosulfate (ml). These data show that there is an obvious correlation between activation temperature and methylene blue absorbance, iodine number, and surface area. At 800°C, the methylene blue adsorption is 12.41 mg/g, the iodine number is 875.61 mg/g, and the surface area is 561.404 m²/g.
Co-Authors Abigael Todingbu’a Andi Musfira Adhar Andi Musfirah Adhar Andi Musfirah Adhar Arif Budiman Dewi Astuti Herawati Dian Ranggina Elizabet Alwina Farham Farham Farham Haera Setiadi Haera Setiawati Haera Setiawati Ida Adriani Idris Ida Adriani Idris Ida Adriani Idris Isma Ayu Ningsih Putri Zainal Isma Ayu Ningsih Putri Zainal Isma Ayu Ningsih Putri Zainal Miftahul Janna Pria Gautama Sukma Abadi Zulham Nurul Fadhila