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"ABSTRAKNanoparticle SnO2 dan nanocomposites SnO2/NGP dengan variasi weight percent wt dari NGP 5wt , 10wt dan 15wt masing-masing disintesis menggunakan metode sol gel dan co-precipitation. Sifat degradasi termal, morfologi dan struktur dianalsis menggunakan spectroscopy TGA Thermogravimetric Analysis , XRD Xray Diffraction , TEM Transmission Electron Spectroscopy , FTIR Fourier Transform Infrared , serta EDX Energy Dispersive X-ray . Dari pengukuran EDX diketahui bahwa keberadaan dari atom C pada nanokomopsit SnO2/NGP mengonfirmasi adanya material NGP pada nanocomposites. Luas permukaan SnO2 nanoparticle meningkat seiring dengan peningkatan wt NGP pada nanocomposites. Pengujian aktivitas photo-, sono-, dan sonophoto- catalytic sampel nanoparticle dan nanocomposites dilakukan dengan mengamati degradasi warna methylene blue MB masing-masing dibawah pemaparan cahaya ultraviolet, ultrasonic, dan gabungan keduanya. Seiring dengan penambahan wt NGP aktivitas photo-, sono-, dan sonophoto- catalytic nanocomposites menjadi semakin meningkat. pH optimum larutan uji diperoleh pada pH 13, serta spesies yang paling berperan dalam aktivitas photo-, sono- dan sonophoto- catalytic adalah hole>OH radikal>elektron.

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ABSTRACTSnO2 nanoparticle and SnO2 NGP nanocomposites with various weight percent wt of NGP 5wt , 10wt and 15wt were successfully prepared by sol gel and co precipitation method, respectively. Thermal degradation properties, morphology and structural properties were characterized using TGA Thermogravimetric Analysis , XRD X ray Diffraction , TEM Transmission Electron Spectroscopy , FTIR Fourier Transform Infrared , and EDX Energy Dispersive X ray . From EDX results show that the addition of C atomic in SnO2 NGP nanocomposite could be confirm the existence of NGP content in nanocomposites. Surface area of SnO2 nanoparticle increase with the increasing of wt NGP in nanocomposites. Photo , sono and sonophoto catalytic examination of the nanoparticle and nanocomposites was carried out using aqueous solution of methylene blue MB under ultraviolet, ultrasonic and combination of both irradiation, respectively. The highest photo , sono and sonophoto catalytic occurred with sampel SnO2 NGP 10wt nanocomposite at alkaline condition. The main species which contributed in photo , sono and sonophoto catalytic activity were hole hydroxyl radical electron."

"Komposit Fe3O4/ZnO/NGP dengan variasi wt NGP 5 , 10 dan 15 telah disintesis dengan menggunakan metode sol-gel dan co-precipitation. Pengukuran X-Ray Diffraction XRD , Energy Dispersive X-Ray EDX , nitrogen adsorption spectroscopy, Vibrating Sample Magnetometer VSM , Fourier Transform Infrared FTIR , dan Differential Thermal Analysis-Thermal Gravimetric Analysis DTA-TGA dilakukan untuk mengidentifikasi struktur, surface area, sifat magnet, vibrasi molekul dan analisis termal material. Pengujian aktivitas catalytic dilakukan dibawah paparan radiasi sinar ultraviolet, ultrasonik dan gabungan dari UV dan ultrasonik terhadap larutan limbah pewarna methylene blue. Komposit Fe3O4/ZnO/NGP 10wt menunjukkan degradasi maksimum pada aktivitas catalytic dengan dosis 0.2 g/L. Pada aktivitas catalytic, pengaruh penambahan scavenger menunjukkan bahwa hole merupakan spesies aktif utama yang berperan penting dalam aktivitas catalytic. Proses reusability membuktikan bahwa komposit Fe3O4/ZnO/NGP 10wt merupakan material yang baik yang dapat digunakan kembali pada aktivitas catalytic.

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Fe3O4 ZnO NGP composites with variations of wt NGP 5 , 10 and 15 were synthesized using sol gel and coprecipitation methods. Measurement of X Ray Diffraction XRD , Energy Dispersive X Ray EDX , nitrogen adsorption spectroscopy, Vibrating Sample Magnetometer VSM , Fourier Transform Infrared FTIR , and Differential Thermal Analysis Thermal Gravimetric Analysis DTA TGA to identify structures, surface area, magnetic properties, molecular vibrations and thermal analysis of materials. The catalytic activity test is performed under exposure of ultraviolet, ultrasonic and combination of ultrasonic and UV irradiation to methylene blue dye solution. The Fe3O4 ZnO NGP 10wt composite showed maximum degradation in catalytic activity at a dose of 0.2 g L. In catalytic activity, the effect of scavenger addition indicates that holes are the main active species that play an important role in catalytic activity. The reusability process proves that the Fe3O4 ZnO NGP 10wt composite is a good material which can be reused in catalytic activity."

"Sampel Fe3O4/CuO/TiO2/NGP composites dengan varaisi weight percent NGP 5, 10,15 wt telah sukses disintesis dengan menggunkan metode co-pecipitation. Pengukuran X-ray Diffraction XRD , Energy Dispersive X-ray EDX , Fourier Tansform Infrared FTIR , Vibrating Sample Magnetometer VSM , Thermogravimetric Analysis TGA , nitrogen adsorptionspectroscopy, dan UV-Visible spectroscopy UV-Vis spectroscopy yang digunakan untuk melihat struktur, elemen penyusun, vibrasi molekul, sifat magnetic, stabilitas thermal, luas permukaan, dan nilai band gap dari sampel Fe3O4/CuO/TiO2/NGP composites. Aktivitas catalytic yang diujikan pada sampel yaitu photo-,sono-,sonophoto-catalytic yang dilakukan dengan mengamati degradasi warna methylene blue MB . Hasil dari aktivitas catalytic menunjukan seiring penambahan nanograhene platelets NGP pada sampel meningkatkan kemampuan catalytic composites. Composites dengan 10 wt NGP menunjukan aktivitas catalytic yang paling baik. Kemudian, Ag ditambahkan Fe3O4/CuO/TiO2/NGP composites disintesis dengan menggunakan metode co-precipitation. Fe3O4/CuO/TiO2/NGP/Ag composites dengan variasi weight percent Ag 5, 15, 25 wt dilakukan pengukuran X-ray Diffraction XRD , UV-Visible spectroscopy, dan Thermogravimetric Analysis TGA . Hasil aktivitas catalytic dari Fe3O4/CuO/TiO2/NGP/Ag composites didapatkan bahwa sampel dengan 25wt Ag memiliki kemampuan catalytic yang paling baik dalam mendegradasi methylene blue. Dari hasil aktivitas catalytic tersebut terlihat bahwa Ag dapat meningkatkan kemampuan catalytic sampel.

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Samples of Fe3O4 CuO TiO2 NGP composites were varied weight percent of NGP 5, 10, 15wt were successfully synthesized using co precipitation method. All prepared samples were characterized using X ray Diffraction XRD , Energy Dispersive X ray EDX , Fourier Tansform Infrared FTIR , Vibrating Sample Magnetometer VSM , Thermogravimetric Analysis TGA , nitrogen adsorption spectroscopy, dan UV Visible spectroscopy UV Vis spectroscopy to determine the structure, composisition element, molecules bonding, magnetic properties, thermal stability, surface area, dan band gap of the Fe3O4 CuO TiO2 NGP composites. Catalytic activities were tested to all of samples is photo , sono , sonophoto catalytic to degrade methylene blue MB . The results of catalytic activities showed that the addition of NGP on samples could enhance catalytic ability of samples. Sample with 10wt NGP showed the best catalytic activity than the other variation samples. Fe3O4 CuO TiO2 NGP Ag composites with variation weight percent of Ag 5, 15, 25wt composites were successfully synthesized using co precipitation method and were characterized using X ray Diffraction XRD , UV Visible spectroscopy, dan Thermogravimetric Analysis TGA . The results of cataylytic activities of Fe3O4 CuO TiO2 NGP Ag composites showed that the addition Ag could enhance catalytic ability sample. Sample with 25wt Ag have best catalytic ability than the other samples. "

"ABSTRAKPenelitian ini membahas pengaruh penambahan material nanographene platelets NGP dan nanoparticles Ag pada komposit Fe3O4/CuO/ZnO dengan menggunakan metode sol-gel dilanjutkan dengan metode co-precipitation. Komposit yang terbentuk kemudian dikarakterisasi dengan menggunakan X-ray diffraction XRD , Energy-Dispersive X-ray EDX , Thermal Gravimetric Analysis TGA , Fourier Transform Infrared FT-IR , UV-Visible Diffuse Reflectance UV-Vis , UV-Vis Absorbance spectroscopy, Scanning Electron Microscopy SEM dan Transmission Electron Microscopy TEM . Pengujian karakterisasi menunjukkan bahwa material yang disentasis merupakan gabungan dari nanoparticles Ag, Fe3O4, CuO, ZnO, dan NGP, sesuai dengan yang diinginkan. Pengujian aktivitas catalytic photo-, sono-, dan sonophotocatalytic dilakukan dengan menggunakan methylene blue MB sebagai model polutan pada keadaan cair. Penambahan Ag dan NGP menunjukkan peningkatan aktivitas catalytic dibandingkan dengan pure komposit Fe3O4/CuO/ZnO. Pengujian scavengers didapatkan bahwa hole dan hydroxyl radicals merupakan spesies dominan dalam aktivitas catalytic. Terakhir, sampel yang dibuat menunjukkan kestabilitasan dalam degradasi limbah selama 4 kali percobaan berulang reusability , hal tersebut menunjukkan potensi dari material Ag/Fe3O4/CuO/ZnO/NGP komposit sebagai degradasi limbah.

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ABSTRACTThis research discusses the effect of adding nanographene platelets NGP and Ag nanoparticles onto Fe3O4 CuO ZnO composites by using sol gel method followed by simple co precipitation method. The as prepared composites were characterized using X ray diffraction XRD , Energy Dispersive X ray EDX , Thermal Gravimetric Analysis TGA , Fourier Transform Infrared FT IR , UV Visible Diffuse Reflectance UV Vis , UV Vis Absorbance spectroscopy, Scanning Electron Microscopy SEM dan Transmission Electron Microscopy TEM . Characterization tests show that the as prepared samples are combination of desired Ag, Fe3O4, CuO, ZnO, and NGP nanoparticles. The catalytic activity photo , sono , and sonophotocatalytic was performed using methylene blue MB as the pollutant model in aqueous solution. The addition of Ag nanoparticles and NGP showed an increase in catalytic activity compared to pristine Fe3O4 CuO ZnO composites. The scavengers test showed that hole and hydroxyl radicals are the dominant species in catalytic activity. Finally, the Ag Fe3O4 CuO ZnO NGP composite exhibits good catalytic stability in four times cycling processes."

"Komposit ZrO2/NGP dan ZrO2/graphene dengan masing-masing 5 massa dari NGP dan graphene telah disintesis dengan menggunakan metode sol-gel, dilanjutkan dengan metode kopresipitasi. Sampel tersebut dikarakterisasi dengan X-ray Diffraction XRD , Energy Dispersive X-ray EDX , Transmission Electron Microscopy TEM , Brunauer-Emmett-Teller BET , Fourier Transform Infrared FT-IR , UV-Visible Diffuse Reflectance UV-Vis dan Thermal Gravimetric Analysis TGA dalam rangka untuk menginvestigasi kristal struktur, komposisi atomic, morfologi, luas spesifik permukaan, mode vibrasi, nilai celah energi dan stabilitas panas dari komposit. Aktivitas catalytic dilakukan dengan menggunakan sinar ultraviolet photocatalytic , ultrasonic sonocatalytic dan gabungan antara ultraviolet dengan ultrasonic sonophotocatalytic sebagai sumber iradiasi pada proses degradasi limbah pewarna methylene blue MB . Hasil menunjukan bahwa ZrO2/graphene mampu menghadirkan kemampuan aktivitas catalytic dan adsorpsi yang lebih baik daripada ZrO 2/NGP dan ZrO2 pada proses degradasi MB. Pada aktivitas catalytic, ditunjukan bahwa sonophotocatalytic menghadirkan efisiensi terbagik, diikuti dengan sonocatalytic dan photocatalytic. Sebagai tambahan, efek dari, suhu kalsinasi, derajat keasaman pH , dosis katalis, konsentrasi MB, scavenger spesies aktif dan penggunaan kembali diinvestigasi dan hasilnya akan dibahas.

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ZrO2 NGP and ZrO2 graphene composites with five weight percent 5 wt of NGP and graphene, respectively, where synthesized by sol gel method, followed by coprecipitation. The prepared samples were characterized by X ray Diffraction XRD , Energy Dispersive X ray EDX , Transmission Electron Microscopy TEM , Brunauer Emmett Teller BET , Fourier Transform Infrared FT IR , UV Visible Diffuse Reflectance UV Vis and Thermal Gravimetric Analysis TGA in order to investigate the crystal structure, atomic composition, morphology, specific surface area, vibration modes, bandgap energy value and thermal stability of the samples. The catalytic activities were performed using ultraviolet photocatalytic , ultrasonic sonocatalytic and the combination of ultraviolet and ultrasonic sonophotocatalytic as an irradation source in degrading methylene blue MB dye. The results showed that ZrO2 graphene could exhibit the best catalytic performance and adsorption than ZrO2 NGP and ZrO2 in degrading MB. In the catalytic activity, sonophotocatalytic exhibit the best catalytic performance, followed by sonocatalytic and photocatalytic. In addition, effect of contact time, calcination temperature, pH, catalyst dosage, MB concentration, scavenger of active species and reusability were investigated and the results were discussed."

"Nanokomposit Fe2O3/Mn2O3-Grafena dengan variasi persen berat grafena berhasil disintesis dengan metode hidrotermal. Hasil X-ray Diffraction (XRD) dapat menunjukkan bahwa sampel tidak memiliki pengotor. Kehadiran graphene dalam nanokomposit telah berhasil ditunjukkan dengan mengukur spektroskopi Raman dan spektroskopi sinar-X dispersif energi (EDX). Peningkatan spesifik dalam area sampel seiring bertambahnya graphene, dapat dikonfirmasi melalui isoterm adsorpsi-desorpsi N2. Vibrating Sample Magnetometer (VSM) menunjukkan bahwa magnetisme sampel menurun dengan meningkatnya graphene. Uji aktivitas foto-Fenton nanokomposit Fe2O3/Mn2O3 dengan adanya graphene digunakan untuk mengevaluasi degradasi metilen biru (MB) dan jingga metil (MO) di bawah paparan sinar UV. Hasil foto-Fenton optimum diperoleh pada nanokomposit Fe2O3/Mn2O3-7G 0,2 g/L dengan 2 mL H2O2 pada pH 4. Spesies aktif yang berperan dalam aktivitas foto-Fenton adalah OH● . Nanokomposit Fe2O3 /Mn2O3-7G juga menunjukkan sifat dapat digunakan kembali.

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Fe2O3/Mn2O3-Graphene nanocomposite with various weight percent graphene was successfully synthesized by hydrothermal method. The results of X-ray Diffraction (XRD) can show that the sample has no impurities. The presence of graphene in nanocomposites has been successfully demonstrated by measuring Raman spectroscopy and energy dispersive X-ray spectroscopy (EDX). The specific increase in sample area as graphene increases, can be confirmed through the N2 adsorption-desorption isotherm. The Vibrating Sample Magnetometer (VSM) shows that the magnetism of the sample decreases with increasing graphene. Photo-Fenton activity test of Fe2O3/Mn2O3 nanocomposite in the presence of graphene was used to evaluate the degradation of methylene blue (MB) and methyl orange (MO) under UV light exposure. Optimum photo-Fenton results were obtained on Fe2O3/Mn2O3-7G 0.2 g/L nanocomposite with 2 mL H2O2 at pH 4. The active species that played a role in photo-Fenton activity was OH●. Fe2O3/Mn2O3-7G nanocomposites also showed reusability."

"Dalam studi ini, nanokomposit LaMnO3/TiO2 dan LaMnO3/ZnO disintesis menggunakan metode sol-gel. Penambahan material graphene pada nanokomposit LaMnO3/TiO2 dan LaMnO3/ZnO dilakukan dengan metode ko-presipitasi. Sampel tersebut dikarakterisasi dengan menggunakan spektroskopi X-ray Diffraction XRD, UV-Visible Diffuse Reflectance UV-Vis Thermogravimetric Analysis TGA, Fourier Transform Infrared FTIR, Raman dan Brunauer Emmet-Teller BET untuk mengamati struktur kristal, nilai celah energi, stabilitas panas, vibrasi molekul, sifat magnet dan luas permukaan pada sampel. Aktivitas catalytic nanokomposit LaMnO3/TiO2 dan LaMnO3/ZnO dengan variasi molar 1:0.5 menunjukan aktivitas catalytic yang paling baik dibandingkan variasi molar lainnya. Selain itu penambahan material graphene pada nanokomposit dapat meningkatkan aktivitas catalytic dari kedua nanokomposit dan 5 weight percentage wt. graphene menunjukan aktivitas catalytic yang paling baik. Aktivitas catalytic dengan menggabungkan photo dan sono sonophotocatalytic menunjukkan aktivitas catalytic yang lebih baik dibandingkan dengan photo- dan sono-catalytic akibat adanya efek sinergis antara photo- dan sono- catalytic. Penambahan scavenger dilakukan untuk mengetahui spesies aktif yang berperan dalam proses catalytic dan hole merupakan spesies paling aktif yang paling beperan dalam proses catalytic.

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In this study, LaMnO3 TiO2 and LaMnO3 ZnO nanocomposite was synthesized using sol gel method while LaMnO3 TiO2 graphene and LaMnO3 ZnO graphene composite was synthesized using co precipitation. The prepared sample was characterized using X ray diffraction XRD, Thermogravimetric Analysis TGA, Differential Thermal Analysis DTA , Fourier Transform Infrared Spectroscopy FTIR, Raman, Vibrating Sample Magnetometer VSM, UV vis diffuse reflectance UV vis DRS and Brunauer Emmet Teller BET spectroscopy to investigate crystal structure, band gap energy, thermal stability, molecule vibration, magnetization and surface area of the sample. The catalytic activity was performed using ultraviolet and visible light photocatalytic , ultrasonic sonocatalytic, and combination of photocatalytic and sonocatalytic sonophotocatalytic to degrade methylene blue MB. The results show that LaMnO3 TiO2 and LaMnO3 ZnO nanocomposite 1 0.5 have superior catalytic activity. The addition of graphene could increase the degradation of MB and 5 weight percentage wt. of graphene show the highst catalytic activity. Furthermore, the catalytic activity under the combination of visible and ultrasonic show higher catalytic activity that photocatalytic and sonocatalytic activity due to the synergistic effect between photo and sono catalytic. "

"Pada penelitian ini, dua jenis graphene graphene dan nanographene platelets NGP dipergunakan sebagai supporting adsorbent dan juga katalis untuk proses degradasi limbah pewarna. Material graphene dan NGP dipergunakan untuk men-support kemampuan adsorpsi dari material nanopartikel Fe3O4. Kemampuan adsorpsi dari nanopartikel Fe3O4 meningkat dengan penambahan material NGP dan graphene. Penambahan material graphene pada Fe3O4 menunjukan kemampuan adsorpsi yang paling baik dibandingkan dengan penambahan material NGP. Material NGP dan graphene juga dipergunakan untuk meningkatkan kemampuan fotokatalitik nanokomposit Fe3O4/ZnO/CuO FZC dibawah penyinaran cahaya ultraviolet UV dan cahaya tampak serta kemampuan sonophotocatalytic dibawah radiasi UV ultrasound US dan cahaya tampak US . Penambahan material graphene menghasilkan kemampuan adsorpsi dan aktivitas fotokatalitik dikarenakan memiliki luasan area yang lebih besar serta oxygen functional group dari material graphene. Penambahan material NGP dan graphene juga mampu menghambat laju rekombinasi elektron dan hole dikarenakan kemampuan graphene dan NGP untuk bertindak sebagai electron acceptor. Hal tersebut berdampak terhadap peningkatan kemampuan aktivitas katalitik dari sampel. Sifat fisis dari seluruh material dianalisis menggunakan X-ray diffractions XRD , energy dispersive X-ray EDX , transmission electron microscope TEM , UV-Vis diffuse reflectance spectroscopy, Fourier transform Infra-red FT-IR spectroscopy Raman spectroscopy, Brunauer ndash;Emmett ndash;Teller BET , differential thermal analysis and thermogravimetric analysis DTA/TGA , vibrating sample magnetometer VSM.

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In this study, two types of Carbon nanographene platelets NGP and graphene has been used as supporting adsorbent and catalyst for waste water removal. Both NGP and graphene were used to support the adsorption ability of Fe3O4 nanoparticles. The adsorption ability of Fe3O4 was increase with the incorporation of NGP and graphene. The incorporation of graphene resulted in the higher adsorption ability of the samples. Moreover, NGP and graphene also used to support the photocatalytic performance under UV and visible light irradiation as well as sonophotocatalytic under UV ultrasound US and visible US of Fe3O4 ZnO CuO FZC nanocomposites. The incorporation of graphene has better adsorption and catalytic performance than the incorporation of NGP due to the higher specific surface area and also the oxygen functional group in graphene materials. The incorporation of NGP and graphene has an ability to prevent recombination electron and hole due to both NGP and graphene could act as electron acceptors. It impacts on the improvement the catalytic performance. The combination of The physical properties of the samples was investigated using X ray diffractions XRD , energy dispersive X ray EDX , transmission electron microscope TEM , UV Vis diffuse reflectance spectroscopy, Fourier transform Infra red FT IR spectroscopy, Raman spectroscopy, Brunauer ndash Emmett ndash Teller BET , differential thermal analysis and thermogravimetric analysis DTA TGA , vibrating sample magnetometer VSM."

"Pada studi ini, saya menggunakan metode fotokatalitik untuk mendegradasi limbah cat pewarna organik dalam limbah air menggunakan MgFe2O4 dan MgFe2O4-nanographene (MgFe2O4/NGP) nanopartikel. MgFe2O4 dan MgFe2O4/NGP (mengandung persentase NGP yang bervariasi) disintesis melalui metode hidrotermal. Kedua bahan ini digunakan sebagai katalis dalam proses fotokatalitik mendegradasi limbah organic Methylene-Blue dalam solusi cair, dibawah radiasi cahaya merah. Karakteristik dari sample (MgFe2O4 & MgFe2O4/NGP) dilakukan menggunakan X-ray Diffraction, Raman Spectroscopy, UVVIS Spectroscopy, XRF, TGA, BJH, XPS, TEM, HRTEM, SAED, EDX dan BET. Hasil dari penelitian ini menunjukkan bahwa MgFe2O4/NGP mempunyai kemampuan fotokatalitik yang lebih baik dibandingkan dengan MgFe2O4. Efek dari konsentrasi NGP (wt%) untuk mendegradasi MB didiskusikan. Spesies aktif dalam proses fotokatalitik juga dipelajari melalui scavenger test.

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In the current study, we use the photodegradation method for the removal of organic dye molecule in wastewater using MgFe2O4 and MgFe2O4-nanographene platelets (MgFe2O4/NGP) nanoparticles. MgFe2O4 and MgFe2O4/NGP (containing various amounts of NGP) were synthesized using the hydrothermal method. Both of them used as a catalyst for photocatalytic degradation of methylene blue (MB), i.e. our organic dye in aqueous solution under red light irradiation. Characteristics of our samples (MgFe2O4 & MgFe2O4/NGP) were characterized using X-ray diffraction, Raman Spectroscopy, UVVIS Spectroscopy, XRF, TGA, BJH, XPS, TEM, HRTEM, SAED, EDX, and BET. The result of our work showed that MgFe2O4/NGP mostly have a better photocatalytic performance compared to pure MgFe2O4. The effect of NGP concentration (wt%) on the photocatalytic degradation of MB was discussed. Active species who'd take effect on the photocatalytic process was also studied by the scavenger test."

"Contact glow discharge electrolysis (CGDE) terbukti mampu mendegradasi banyak senyawa organik berat seperti zat pewarna karena produksi ?OH yang sangat banyak. Penelitian ini bertujuan untuk mendegradasi limbah pewarna batik jenis Remazol Red dengan metode CGDE dan penambahan ion Fe2+. Penambahan garam besi terbukti dapat meningkatkan efisiensi proses. Degradasi zat pewarna diamati dengan mengukur absorbansi dengan alat Spektrofotometer UV-Vis. Kondisi optimum yang diperoleh adalah dengan larutan elektrolit Na2SO4 0,01 M; tegangan 860 V; penambahan FeSO4 0,1 gram, volum limbah 1500 mL, dan menggunakan 1 anoda tungsten kedalaman 5 mm dengan persentase degradasi limbah mencapai 99,92% dalam waktu 20 menit.

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Contact Glow Discharge Electrolysis (CGDE) has been shown to degrade much weight organic compounds such as dyes for the production of ?OH is excess. This research aims to degrade batik dye waste Remazol Red, using CGDE method with the addition of Fe2+ ion. The addition of iron salt compounds has proven to increase process efficiency. Dye degradation is known by measure its absorbances with Spectrophotometer UV-Vis. The result of study showed that percentage degradation was 99,92% in 20 minutes which obtained by using Na2SO4 0,01 M, with addition FeSO4 0,1 gram, applied voltage 860 volt, and 1 wolfram anode 5 mm depth."