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PENGARUH PENGASAMAN PADA SPESIASI CU(II) DALAM SISTEM ASAM HUMAT-AIR Sunarsih, Sri; Santosa, Sri Juari; -, Mudasir
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 6 No 1 Agustus 2013
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

The influences of acidify and humic acid (HA) weight on Cu(II) speciation in humic acid-water system has been studied. The HA was extracted from peatsoil in Siantan, Pontianak, West Kalimantan. The Cu(II) solution was made from Cu(SO)4.s H2O crystal of E.Merck for analytical grade. The acidify effect test carried out with 50 mL of Cu(II) solution in 100 ppm concentration then varied their pH level at 4, 5 ,6, 7 and 8. To each solution added with 30 mg of HA, be interacted in 1 hour, and then settled in 24 hour to be equilibrium. The same procedure were done to prepare the solutions for determining the effect of HA weight on Cu(II) speciation. The weight of HA varied at 20, 40, 60, 80 and 120 mg with pH solution 5,0. The concentration of total Cu and hydrated Cu(II) were determined using Atomic Absorption Spectrophotometer and Ionic Selective Electrode (ISE), respectively. Based on measurement of total Cu and hydrated Cu known that if the initial pH of solution higher, the absorption of Cu to HA became higher too. The fraction that was not absorbed distributed as hydrated Cu and Cu-AH complex that their concentration was in equilibrium at pH value of 5,0. The result of pH measurement at the equilibrium, the value of Ksp Cu(OH)2 and calculation of OH- indicated that there were no deposition of Cu(OH)2 formed. The measurement also indicated that if the more weight of HA applied on the interaction, the absorption to Cu became higher. The fraction that was not adsorbed increasingly as Cu-AH complex.

STUDI ADSORPSI KARBON AKTIF LIMBAH KULIT BUAH NANGKA TERHADAP RHODAMIN B Sunarsih, Sri; Dahani, Wiwik
Jurnal Teknologi Vol 11 No 1 (2018): Jurnal Teknologi
Publisher : Jurnal Teknologi, Fakultas Teknologi Industri, Institut Sains & Teknologi AKPRIND Yogyakarta

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Penelitian ini bertujuan membuat karbon aktif dari limbah buah nangka kering melalui proses pirolisis dilanjutkan dengan aktivasi kimia menggunakan garam ZnCl2 yang konsentrasinya divariasi dari 0, 0,5; 1,0; 1,5 dan 2,0 M. Karbon aktif yang dihasilkan diuji kadar air dan kapasitas serapannya terhadap I2 dengan metoda titrasi iodimetri. Pengujian pengaruh konsentrasi garam ZnCl2 terhadap kapasitas adsorpsi karbon aktif pada Rhodamin B, dilakukan dengan menginteraksikan 100 mg karbon aktif (yang konsentrasi aktivatornya bervariasi dari 0, 0,5; 1,0; 1,5 dan 2,0 M) dengan 25 mL larutan Rhodamin B pada konsentrasi tetap. Rhodamin B yang tidak teradsorp ditentukan dengan spektrofotometer UV-Vis. Karbon yang paling teraktifkan kemudian diuji kapasitas adsorpsinya terhadap Rhodamin B dengan menginteraksikan 100 mg karbon aktif dengan 25 mL larutan Rhodamin B yang konsentrasinya bervariasi dari 0; 0,5; 1,0; 1,5; 2,0; 2,5 dan 3,0 ppm dengan waktu interaksi 1 jam. Hasil penelitian menunjukkan bahwa kapasitas adsorpsi karbon aktif yang dihasilkan terhadap I2 berkisar antara 584,2- 844,6 mg/g arang aktif. Sampai dengan konsentrasi Rhodamin B sebesar 3 ppm, kapasitas adsorpsi arang aktif kulit nangka terus bertambah secara linier dan belum menunjukkan nilai maksimum. Pada konsentrasi Rhodamin B sebesar 0,5 â€“ 3,0 ppm diperoleh kapasitas adsorpsi terbesar pada karbon aktif sebesar 14,20 mg/g. Teramati juga bahwa kenaikan konsentrasi aktivator ZnCl2 maupun konsentrasi larutan Rhodamin B tidak menaikkan kapasitas adsorpsi secara signifikan.

PENGOLAHAN LIMBAH CAIR INDUSTRI ELEKTROPLATING DENGAN FITOREMEDIASI MENGGUNAKAN AZOLLA MICROPHYLLA Pratiwi, Yuli; Sunarsih, Sri; Dewi, Kurnia Puspa
Jurnal Teknologi Vol 12 No 1 (2019): Jurnal Teknologi
Publisher : Jurnal Teknologi, Fakultas Teknologi Industri, Institut Sains & Teknologi AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.3415/jurtek.v12i1.2151

Air limbah industri elektroplating umumnya banyak mengandung logam-logam berat, diantaranya adalah logam kromium (Cr) yang dapat membahayakan lingkungan dan kesehatan. Penelitian ini bertujuan untuk mengetahui pengaruh waktu tinggal dan berat basah Azolla microphylla dalam menurunkan kadar BOD, COD dan Cr-Total pada limbah cair pelapisan logam. Waktu tinggal antara 2, 4, 6, 8, 10 hari dan berat basah tanaman antara 70, 90, 110, 130 dan 150 gram terhadap parameter yang diuji yaitu BOD, COD dan Cr-Total air limbah elektroplating. Hasil penelitian menunjukkan waktu tinggal paling baik pada pengolahan ini adalah enam hari dengan nilai BOD 22,26 mg/L dan efisiensi penurunan sebesar 65,74%. Nilai COD 61 mg/L dan efisiensi penurunan sebesar 72,79%. Nilai Cr-Total 2,98 mg/L dengan efisiensi penurunan sebesar 93,23%. Berat basah tanaman yang paling baik menurunkan kadar BOD, COD dan Cr-Total adalah 150 gram. Nilai BOD yaitu 24,07 mg/L dan efisiensi penurunan sebesar 62,97 %. Nilai COD 67,87 mg/L dan efisiensi penurunan sebesar 69,72%. Nilai Cr-Total 4,13 mg/L dan efisiensi penurunan Cr-Total sebesar 90,58 %. Menurut Peraturan Gubernur Daerah Istimewa Yogyakarta No. 7 Tahun 2016 hanya BOD dan COD yang memenuhi baku mutu, sedangkan Cr-Total tidak memenuhi baku mutu.

PENGARUH PENGASAMAN PADA SPESIASI CU(II) DALAM SISTEM ASAM HUMAT-AIR Sunarsih, Sri; Santosa, Sri Juari; -, Mudasir
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 6 No 1 Agustus 2013
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v6i1.592

The influences of acidify and humic acid (HA) weight on Cu(II) speciation in humic acid-water system has been studied. The HA was extracted from peatsoil in Siantan, Pontianak, West Kalimantan. The Cu(II) solution was made from Cu(SO)4.s H2O crystal of E.Merck for analytical grade. The acidify effect test carried out with 50 mL of Cu(II) solution in 100 ppm concentration then varied their pH level at 4, 5 ,6, 7 and 8. To each solution added with 30 mg of HA, be interacted in 1 hour, and then settled in 24 hour to be equilibrium. The same procedure were done to prepare the solutions for determining the effect of HA weight on Cu(II) speciation. The weight of HA varied at 20, 40, 60, 80 and 120 mg with pH solution 5,0. The concentration of total Cu and hydrated Cu(II) were determined using Atomic Absorption Spectrophotometer and Ionic Selective Electrode (ISE), respectively. Based on measurement of total Cu and hydrated Cu known that if the initial pH of solution higher, the absorption of Cu to HA became higher too. The fraction that was not absorbed distributed as hydrated Cu and Cu-AH complex that their concentration was in equilibrium at pH value of 5,0. The result of pH measurement at the equilibrium, the value of Ksp Cu(OH)2 and calculation of OH- indicated that there were no deposition of Cu(OH)2 formed. The measurement also indicated that if the more weight of HA applied on the interaction, the absorption to Cu became higher. The fraction that was not adsorbed increasingly as Cu-AH complex.

PERBANDINGAN EFEKTIVITAS JERAPAN Pb DALAM PARTIKULAT OLEH POHON TANJUNG (Mimusops elengi) DAN POHON BUNGUR (Lagerstroemia) (STUDI KASUS DI JALAN TIMOHO YOGYAKARTA) Sunarsih, Sri; Suseno, Hadi Prasetyo; Fajri, Muhammad Aulia
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 14 No 1 Agustus 2021
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v14i1.3258

The ability of plants to absorb metallic pollutants varies. The research has been conducted to compare the effectiveness of Tanjung (Mimusops elengi) and Bungur (Lagerstroemia) plants in absorbing Pb metal in particulate matter. The effect of location and leaf height on the effectiveness of pollutant uptake was also observed. Sampling was carried out in July 2020-September 2020 by taking leaves that were not too dark or light in color. Leaves taken at heights 3, 6, and 9 m on Timoho side Street. The particulate and leaf samples were digested and then analyzed their Pb levels using an Atomic Absorption Spectrophotometer (AAS). The results showed that the Tanjung plants with denser leaves captured more particulate deposits than the Bungur plants. This plant is also more effective at absorbing and accumulating Pb metal, which is indicated by the ratio of Pb metal in the leaves to Pb in particulates which is higher than the Bungur plant. These results were consistent for each sampling period, at each location and each crown height.

PERBANDINGAN EFEKTIVITAS JERAPAN Pb DALAM PARTIKULAT OLEH POHON TANJUNG (Mimusops elengi) DAN POHON BUNGUR (Lagerstroemia) (STUDI KASUS DI JALAN TIMOHO YOGYAKARTA) Sunarsih, Sri; Suseno, Hadi Prasetyo; Fajri, Muhammad Aulia
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 14 No 1 Agustus 2021
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v14i1.3258

The ability of plants to absorb metallic pollutants varies. The research has been conducted to compare the effectiveness of Tanjung (Mimusops elengi) and Bungur (Lagerstroemia) plants in absorbing Pb metal in particulate matter. The effect of location and leaf height on the effectiveness of pollutant uptake was also observed. Sampling was carried out in July 2020-September 2020 by taking leaves that were not too dark or light in color. Leaves taken at heights 3, 6, and 9 m on Timoho side Street. The particulate and leaf samples were digested and then analyzed their Pb levels using an Atomic Absorption Spectrophotometer (AAS). The results showed that the Tanjung plants with denser leaves captured more particulate deposits than the Bungur plants. This plant is also more effective at absorbing and accumulating Pb metal, which is indicated by the ratio of Pb metal in the leaves to Pb in particulates which is higher than the Bungur plant. These results were consistent for each sampling period, at each location and each crown height.

Activated Carbon from Jackfruit Peel Waste ss Decolouring Agent of Screen Printing Waste Water Sri Sunarsih; Sri Hastutiningrum; Tifani Diah Nisa
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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The aim of this research was to create decolouring agent of screen printing waste water by using activated carbon from jackfruit peel waste as an adsorbent. The carbonization process of jackfruit peel waste has been done in temperature 907o C in the absence of air and activated with sulfuric acid in different concentration (3, 5, 7, 9 and 11%). The adsorption capacity of activated carbon found out by interacting it with 25 mL of screen printing waste water. Furthermore, some test had been done to find out the influence of different particle size, weight of adsorbent and interaction time. The effect of different particle size was examined at 20, 40 and 60 mesh, the effect of the weight of adsorbent in 100, 125, 150, 175 and 200 mg and interaction time at 15, 30, 60, 90 and 120 minutes. Optimum capacity of activated carbon reached at 11% concentration of sulfuric acid, particle size 40 mesh, with the weight 200 mg and time interaction of 90 minutes

ANALISIS HUBUNGAN AKTIVITAS KENDARAAN BERMOTOR TERHADAP KONSENTRASI SO2 DAN NO2 DI UDARA AMBIEN (STUDI KASUS: JL. PANEMBAHAN SENOPATI YOGYAKARTA) Sri Hastutiningrum; Sri Sunarsih; Imelda -
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 1 Agustus 2018
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

The aims of this study is to determine the correlation between vehicle traffic activity and the effect of sampling time on the SO2 and NO2 concentration in ambient air. The sampling location is on Jl. Senopati Yogyakarta. Sampling was carried out by an air absorbtion tool with 1.5-meter-high auxiliary from the ground. To measure SO2 using Pararosanilin method and Griess Saltzman method for NO2. The stages of this study begin with the preparation of TCM absorption solutions for SO2, Griess Saltzman absorbent solution for NO2, calibration curve manufacture, and vehicle volume calculation. Determination of concentration is done by UV-Vis spectrophotometer Thermo Scientific Genesys 20. Time sampling is divided into weekdays (Tuesday-Wednesday) and weekend (Saturday-Sunday) with sampling time on 03.00-04.00, 07.00-08.00 a.m, and 12.00-01.00, 04.00-05:00 and 07.00-08.00 p.m. The result of the study shows that the concentration of SO2 and NO2 in ambient air is not related (correlated) with vehicle activity at Jl. Senopati Yogyakarta,as well as sampling time that did not affected. The highest SO2 concentration was recorded at 232,05μg/Nm3 while the highest NO2 concentration was 17.9522 μg/Nm3. Both is not exceed of air quality standard 900μg/Nm3 and 400 μg/Nm3.

ANALISIS HUBUNGAN AKTIVITAS KENDARAAN BERMOTOR TERHADAP KONSENTRASI SO2 DAN NO2 DI UDARA AMBIEN (STUDI KASUS: JL. PANEMBAHAN SENOPATI YOGYAKARTA) Sri Hastutiningrum; Sri Sunarsih; Imelda -
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 1 Agustus 2018
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v11i1.121

The aims of this study is to determine the correlation between vehicle traffic activity and the effect of sampling time on the SO2 and NO2 concentration in ambient air. The sampling location is on Jl. Senopati Yogyakarta. Sampling was carried out by an air absorbtion tool with 1.5-meter-high auxiliary from the ground. To measure SO2 using Pararosanilin method and Griess Saltzman method for NO2. The stages of this study begin with the preparation of TCM absorption solutions for SO2, Griess Saltzman absorbent solution for NO2, calibration curve manufacture, and vehicle volume calculation. Determination of concentration is done by UV-Vis spectrophotometer Thermo Scientific Genesys 20. Time sampling is divided into weekdays (Tuesday-Wednesday) and weekend (Saturday-Sunday) with sampling time on 03.00-04.00, 07.00-08.00 a.m, and 12.00-01.00, 04.00-05:00 and 07.00-08.00 p.m. The result of the study shows that the concentration of SO2 and NO2 in ambient air is not related (correlated) with vehicle activity at Jl. Senopati Yogyakarta,as well as sampling time that did not affected. The highest SO2 concentration was recorded at 232,05μg/Nm3 while the highest NO2 concentration was 17.9522 μg/Nm3. Both is not exceed of air quality standard 900μg/Nm3 and 400 μg/Nm3.

Pengaruh Waktu Proses dan Ukuran Bahan terhadap Efektivitas Proses Maserasi Daun Strobilantes Cusia Murni Yuniwati; Wanda Pratiwi; Bambang Kusmartono; Sri Sunarsih
Jurnal Teknologi Vol 15 No 1 (2022): Jurnal Teknologi
Publisher : Jurnal Teknologi, Fakultas Teknologi Industri, Institut Sains & Teknologi AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/jurtek.v15i1.3570

Strobilanthes cusia is a herbaceous shrub that is a source of blue dye, grows well above an altitude of 1000 m. This plant is very easy to breed, and for the purposes of making this plant dye, it can be harvested every 3 months. The use of strobilantes cusia leaves as natural dyes has been managed by UMK Shibiru in the Ngadirejo area, Temanggung. The results in the form of pasta have been marketed to various regions and even abroad. Some of the products are directly used to dye fabrics to serve the needs of batik in various regions. The raw materials in the form of leaves and twigs are macerated using water, within three days. The effectiveness of the process can still be improved by examining the factors that influence the effectiveness of the maceration process. In this study, it was studied how the effect of material size and time on the effectiveness of the maceration process. The results showed that the smaller the size of the material and the greater the time used, the results obtained will be better, which was indicated by the intensity of the color of the extract produced. By using a UV-Vish Spectrophotometer, two colors were detected in the extract solution, namely blue with a wavelength of 409 nm and red with a wavelength of 678 nm. However, from further observations by observing the absorbance, it can be seen that the red content is smaller than the blue color. The best result in this study was the maceration process using a leaf size of 0.5 cm and a maceration time of 3 days. Under these conditions, maceration results were obtained with an absorbance value of 24,295 for the blue color with a wavelength of 409 and an absorbance value of 12,150 nm for the red color with a wavelength of 678 nm.

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