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"Toluena merupakan salah satu komponen utama dalam fraksi minyak bumi yang bersifat racun dan karsinogenik serta sulit didegradasi oleh lingkungan. Pada limbah cair, konsentrasi toluena dapat direduksi menggunakan adsorpsi karbon aktif. Setelah adsorben jenuh dengan kontaminan pada proses adsorpsi, karbon aktif harus diregenerasi atau diganti. Mikroorganisme digunakan untuk regenerasi adsorben dengan proses biodegradasi kontaminan. Penelitian ini bertujuan menguji kemampuan GAC dan konsorsium mikroba dalam mendegradasi limbah cair yang mengandung toluena. Penelitian ini menggunakan kolom biobarrier skala pilot. Selain itu, dilakukan pengujian pengaruh variasi konsentrasi H2O2 sebagai elektron akseptor yang mensuplai oksigen pada proses biobarrier toluene dengan memanfaatkan aktivitas konsorsium Pseudomonas aeruginosa, Pseudomonas fluorescens, Aeromonas hydrophilla, Bacillus coagulans dan Bacillus substilis dalam biobarrier skala pilot. Enrichment dilakukan terhadap konsorsium bakteri untuk adaptasi dengan toluena. Konsorsium bakteri hasil enrichment diinjeksikan 500 ml ke dalam kolom biobarrier yang berisi Granular Activated Carbon (GAC) yang telah melewati tahap adsorpsi toluena. Dilakukan variasi konsentrasi H2O2 10 mg/l, 30 mg/l, dan 50 mg/l untuk biodegradasi yang optimum. Kontaminan dialirkan secara kontinu dengan laju alir sebesar 0,63 lpm, sementara elektron akseptor dialirkan dengan laju alir 0,2 lpm dan nutrisi 0,1 lpm. Konsorsium bakteri akan mereaktivasi GAC dengan biodegradasi toluene yang menempel di permukaan dan teradsorp dalam pori GAC. Proses biodegradasi optimum pada konsentrasi H2O2 10 mg/l dengan konsentrasi toluene terdegradasi maksimum sebesar 168,3 ppm.

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Toluene is one of the main components found in the crude oil fraction. It is toxic, carcinogenic and barely degradable by natural environment. In waste water, toluene concentration could be reduced by using activated carbon adsorption. By the time the activated carbon is saturated by toluene, it needs to be regenerated or replaced. Microorganism is the agent of adsorbent regeneration through process called biodegradation.

This research, is aimed to study GAC and microbial consortium to degradate wastewater containing toluene. This research use pilot scale biobarrier column. In addition, this research observe toward the effect of electron acceptor, H2O2, concentration that act as oxygen supplier on biobarrrier process of toluene utilizing the activity of bacterial consortium of Pseudomonas aeruginosa, Pseudomonas fluorescens, Aeromonas hydrophilla, Bacillus coagulans, and Bacillus subtilis in pilot scale biobarrier instrument.

Enrichment is a process which bacterial consortium is adapted to toluene environment. After some certain times, 500 ml of the enriched consortium is injected to biobarrier column that filled with GAC. This GAC has already pass the toluene adsorption phase. Biodegradation is carried out on 3 variations of H2O2 concentration, 10 mg/L, 30 mg/L, and 50 mg/L.

Contaminant is flowed continuously at 0.63 lpm flow rate, while electron acceptor at 0.2 lpm flow rate and nutrition at 0.1 lpm flow rate. The bacterial consortium would reactivate GAC by biodegrading toluene that attach on its surface and that adsorbed inside its pores. The biodegradation process attain the optimum result on H2O2 concentration 10 mg/L with maximum value of toluene degradation at 168.3 ppm."

"Proses penyisihan senyawa fenol, COD dan 1,1,2,2-tetrakloroetana menggunakan teknik ozonasi katalitik dengan katalis Granular Activated Carbon (GAC) yang dikombinasikan dengan emisi sinar UV dilakukan dalam penelitian ini. Tujuan dari penelitian ini untuk memperoleh efektivitas aplikasi teknik ozonasi katalitik menggunakan sistem konfigurasi, yaitu: Ozon/GAC dan Ozon/UV/GAC dalam penyisihan limbah fenol, COD dan 1,1,2,2-tetrakloroetana dengan waktu sirkulasi (0, 15, 30, 45, 60, dan 120 menit). Limbah cair yang digunakan berasal dari limbah cair Laboratorium Industri Polyester di daerah Bogor.Analisis yang dilakukan meliputi analisis COD dengan metode FAS, analisis Fenol dengan menggunakan metode aminoantipirin dan analisis 1,1,2,2-tetrakloroetana dengan metode GC-FID. Setelah dilakukan penelitian, diketahui bahwa konfigurasi Ozon/UV/GAC dengan konsentrasi awal fenol 58,00 mg/L, COD 72,00 mg/L dan 1,1,2,2-tetrakloroetana 32,96 mg/L menghasilkan persentase penyisihan senyawa fenol 57,76%, COD 66,67% dan 1,1,2,2-tetrakloroetana 98,74% sedangkan konfigurasi Ozon/GAC dengan konsentrasi awal fenol 55,00 mg/L, COD 72,00 mg/L dan 1,1,2,2-tetrakloroetana 37,70 mg/L menghasilkan persentase penyisihan senyawa fenol 50,91%, COD 55,56% dan 1,1,2,2-tetrakloroetana 100%.

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Process eliminating compounds of phenol, COD and 1,1,2,2-tetrachloroethane using catalytic ozonation technique with catalyst Granular Activated Carbon (GAC) combination with UV light emission performed in this study. The purpose of this study was to obtain the effectiveness of applications catalytic ozonation technique using system configuration Ozone/GAC and Ozone/UV/GAC for eliminating in waste phenol, and 1,1,2,2-tetrachloroethane COD with circulation time (0, 15, 30, 45, 60, and 120 minutes). The wastewater was derived from wastewater Laboratory of Polyester Industrial in Bogor.

The results were analyzed which comprising of COD with FAS method, phenol using aminoantipirin method and 1,1,2,2-tetrachloroethane with GC-FID method. The result of study shown that the configuration of the Ozone/ UV/GAC with an initial concentration of phenol 58,00 mg/L, COD 72,00 mg/L and 1,1,2,2-tetrachloroethane 32,96 mg/L resulted in the percentage of eliminating phenol 57,76%, 66,67% COD and 1,1,2,2-tetrachloroethane 98,74% while the configuration of Ozone/GAC with an initial concentration of phenol 55,00 mg/L, COD 72,00 mg/L and 1,1,2,2-tetrachloroethane 37,70 mg/L resulted in percentage of eliminating phenol 50,91%, 55,56% COD and 1,1,2,2-tetrachloroethane 100%."

"Benzena dan toluena merupakan komponen utama dalam fraksi minyak bumi yang bersifat racun dan karsinogenik serta sulit didegradasi oleh lingkungan. Setelah adsorben jenuh dengan kontaminan pada proses adsorpsi, karbon aktif harus direaktivasi atau diganti. Mikroorganisme digunakan untuk reaktivasi adsorben dengan proses biodegradasi kontaminan. Pada penelitian ini akan dilakukan pengujian pengaruh variasi konsentrasi H2O2 sebagai elektron akseptor yang mensuplay oksigen pada proses biobarrier campuran benzena dan toluena dengan memanfaatkan aktivitas konsorsium Pseudomonas aeruginosa, Pseudomonas fluorescens, Aeromonas hydrophilla, Bacillus coagulans dan Bacillus substilis dalam bioreaktor fixed bed. Enrichment dilakukan terhadap konsorsium bakteri untuk adaptasi dengan benzena dan toluena. Konsorsium bakteri hasil enrichment diinjeksikan 2 ml ke dalam kolom bioreaktor yang berisi Granular Activated Carbon (GAC) yang jenuh akan benzena dan toluena pada tahap penjenuhan GAC. Dilakukan variasi konsentrasi H2O2 10 mg/l, 30 mg/l, 40 mg/l, dan 50 mg/l untuk biodegradasi yang optimum. Campuran kontaminan yang ditambah L°Ckhead and Chase (LC) dan H2O2 dialirkan secara kontinyu dengan laju alir masing-masing 18.2 ml/menit dan 1 ml/menit. Sampel outlet kolom bioregenerator dianalisa dengan Gas Chromatograph-Flame Ionization Detector (GC FID). Konsorsium bakteri akan mereaktivasi GAC dengan biodegradasi benzena toluena yang menempel di permukaan dan teradsorp dalam pori GAC. Inokulasi awal enrichment 3,5 x 105 CFU/ml mencapai fasa stationer jam ke-120 dengan jumlah bakteri 1.37 x 1011 CFU/ml. Proses biodegradasi optimum pada konsentrasi H2O2 30 mg/l dengan konsentrasi benzena dan toluena outlet kolom II masing-masing 25 ppm dan 40.5 ppm.

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Benzene and toluene are the main component found in crude oil fraction. Both are toxic and barely degradable by nature and become hazardous contaminant. The concentration of benzene or toluene could be reduced by adsorption using Granulated Activated Carbon (GAC). By the time the activated carbon is saturated by benzene and toluene, it needs to be regenerated or replaced. Microbacterial is the agent of adsorbent regeneration through process called biodegradation. This research is aimed to observe the effect of electron acceptor, H2O2, concentration that act as oxygen supplier on biobarrrier process of benzenetoluene mixture utilizing the activity of bacterial consortium of Pseudomonas aeruginosa, Pseudomonas fluorescens, Aeromonas hydrophilla, Bacillus coagulans, and Bacillus subtilis in fixed bed reactor. Enrichment is a process which bacterial consortium is adapted to benzene and toluene environment. After some certain times, 2 ml of the enriched consortium is injected to bioreactor column that filled with GAC. This GAC already pass the loading phase, which means it is saturated with benzene and toluene. Biodegradation is carried out on 4 variations of H2O2 concentration, 10 mg/L, 30 mg/L, 40 mg/L, and 50 mg/L. Contaminant plus nutrition are flowing into column at 18.2 ml/minute while H2O2 flows at 1 ml/minute. Samples are analyzed using Gas Chromatography-Flame Ionization Detector (GC-FID). Bacterial consortium would regenerate GAC by biodegrading benzene and toluene that attach on its surface and that adsorbed inside its pores. At t = 0, the consortium reach the number of colony 3.5 x 105 CFU/ml and get to stationery phase at t = 120 with colony 1.37 x 1011 CFU/ml. Biodegradation attain the optimum result on H2O2 concentration 30 mg/L with outlet concentration of benzene 25 ppm and toluene 40.5 ppm."

"Limbah cair tahu merupakan salah satu pencemar lingkungan yang masih memerlukan metode pengolahan yang lebih efektif dan efisien. Metode ozonasi dan adsorpsi diketahui memiliki kemampuan untuk mengoksidasi kandungan senyawa organik di dalam limbah secara efektif. Adsorpsi dilakukan dengan menggunakan Granular Activated Carbon GAC untuk meningkatkan efektivitas degradasi limbah cair tahu. Untuk mengetahui kondisi optimal pengolahan limbah cair tahu, dilakukan variasi terhadap dosis ozon yaitu 62, 111, dan 155 mg/jam dan jumlah karbon aktif yang digunakan yaitu 50, 75, dan 100 gram. Parameter yang ditinjau sebagai hasil akhir penelitian ini adalah kandungan substansi organik COD dan TSS dalam limbah cair tahu yang telah diproses. Hasil terbaik yang diperoleh dari penelitian ini yaitu pada metode kombinasi ozonasi dengan dosis 155 mg/jam dan adsorpsi dengan GAC sebanyak 100 gram dengan waktu kontak 120 menit yang menyisihkan 377,12 mg/L COD dan 26 mg/L TSS.

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Tofu industry wastewater is one of environment pollutant that still needed wastewater treatment method which more efficient and effective. Ozonation and adsorption method is known to have the capability to oxidized organic compound in wastewater. Adsorption is done using granular activated carbon as adsorbant to increase the effectiveness of tofu wastewater degradation process. This research is carried out to evalueate the performance of ozonation, adsorption, and combination of both methods in processing tofu wastewater. To get the optimal condition, variations are done for the dosage of ozone 62, 111, and 155 mg h and amount of GAC used 50, 75, and 100 gram. Parameters of this prosess are organic substances of tofu wastewater such as CO, and TSS. The best result obtained from this research was the combination of ozonation with ozone dose of 155 mg h and adsorption with 100 grams of GAC for 120 minutes which removed 377,12 mg L COD and 26 mg L TSS."

"Pada penelitian ini dilakukan studi kasus proses penyisihan fenol dalam limbah cair dengan teknik ozonasi katalitik menggunakan GAC dan ZAL dalam reaktor unggun diam berpemutar. Perbandingan efektivitas penggunaan katalis pada teknik ozonasi katalitik ditinjau dari kuantitas radikal hidroksil, persesntase penyisihan fenol, neraca massa ozon, perubahan pH, serta karakteristik dan kemampuan adsorpsi katalis.Hasil penelitian menunjukkan bahwa GAC lebih unggul dari ZAL dalam menyisihkan senyawa fenol di limbah cair, baik melalui proses adsorpsi tunggal maupun dengan teknik ozonasi katalitik. Pada kondisi operasi yang sama, GAC memiliki kemampuan adsorpsi fenol yang lebih baik (persentase penyisihan fenol 60,86% dengan tingkat adsorpsi 1,302 mg/g) dibandingkan dengan ZAL (persentase penyisihan fenol 15,47% dengan tingkat adsorpsi 0,287 mg/g). Dalam larutan limbah bersuasana basa (pH ≈ 10), kombinasi ozon dengan GAC mampu menyisihkan fenol sebesar 88,94% dibandingkan ozonasi katalitik menggunakan ZAL hanya mampu menyisihkan fenol sebesar 50,97%.

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In this research, a case study of elimination process of phenol compounds in waste water by catalytic ozonation using GAC and ZAL in rotating packed bed reactor was examined. The effectiveness comparison of catalysts which used in ozonation catalytic is evaluated from quantity of hydroxyl radicals, percentage of phenol degradation, the mass balance of ozone, pH changes, catalyst`s adsorption capacity, and the changes of catalyst characteristics.

The results showed that GAC is better than ZAL to eliminate phenol compounds in waste water, either through a single adsorption process as well as catalytic ozonation technique. At the same operating conditions, GAC has better ability for phenol adsorption (percentage of phenol degradation about 60,86% with the rate of adsorption up to 1,302 mg/g) compared to ZAL (percentage of phenol degradation about 15,47% with the rate of adsorption 0,287 mg/g). In waste water with alkali solution (pH ≈ 10), combination of ozone with GAC capable to remove phenol by 88,94%, compared to use catalytic ozonation using ZAL that only capable to remove phenol by 50,97%."

"Penelitian ini bertujuan untuk mengetahui efisiensi aplikasi teknologi ozonasi katalitik menggunakaan Granular Activated Carbon (GAC) pada penyisihan COD, NH3, Coliform dan senyawa antibiotik (turunan fenol) dalam limbah cair rumah sakit. Limbah cair yang digunakan berasal dari limbah cair Rumah Sakit Bumi Waras yang belum memasuki instalasi pengolahan air limbah (IPAL).Variabel kondisi operasi yang divariasikan pada proses penyisihan senyawa antibiotik (turunan fenol), COD, NH3, dan Coliform dalam limbah cair menggunakan teknologi ozonasi katalitik adalah konfigurasi sistem pengolahan limbah (Ozon, Ozon/UV, Ozon/GAC, Ozon/UV/GAC) dan waktu penyisihan (0, 15, 30, 45, 60, 120 menit). Analisis yang digunakan meliputi metode 4-Aminoantipirin untuk senyawa antibiotik (turunan fenol), metode Refluks tertutup untuk COD, metode Nessler untuk NH3, dan metode Total plate count untuk Coliform.Setelah dilakukan penelitian, diketahui bahwa konfigurasi Ozon/UV merupakan konfigurasi yang paling tepat digunakan untuk Instalasi Pengolahan Air Limbah (IPAL) di Rumah Sakit Bumi Waras, Bandar Lampung. Konfigurasi Ozon/UV secara signifikan mampu menyisihkan kandungan antibiotik (turunan fenol) 64%, COD 60%, NH3 10,71%, Coliform total 98,89%, dan E.Coli 100%.

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The present study was aimed at determining the efficiency of catalytic ozone technology applications using Granular Activated Carbon (GAC) on the removal of COD, NH3, Coliform and antibiotic compounds (phenol derivatives) in the treated wastewater. The liquid waste was derived from wastewater of Bumi Waras Hospital that had not entered yet to wastewater treatment plant (WWTP).

Operating conditions variable that varied in Coliform the process of removal antibiotic compounds (phenol derivatives), COD, NH3, and in wastewater using catalytic ozone technology is the configuration of wastewater treatment system (Ozone, Ozone/UV, Ozone/GAC, Ozone/UV/GAC) and time of removal process (0, 15.30, 45, 60, 120 minutes).

The results were analyzed wich comprising of antibiotic compounds (phenol derivatives) by 4-Aminoantipyrine method, COD by Closed reflux method, NH3-N by Nessler method, and Coliform by Total plate count. The result of study shown that the configuration of Ozone/ UV was the most appropriate configuration for Waste Water Treatment Plant (WWTP) at Bumi Waras Hospital, Bandar Lampung. Configuration Ozone/ UV was significantly capable of removing antibiotic content (phenol derivatives), COD, NH3, Coliform total, and E.coli by 64%, 60%, 10.71%, 98.89%, and 100%, respectively."

"Pencemaran limbah cair organik menjadi masalah serius saat ini terutama pada lingkungan perairan. Bahan pencemar organik yang sering ditemui adalah Benzena dan Toluena. Berbagai teknik aplikasi biologis untuk menghilangkan kontaminan organik ini telah banyak dilakukan. Salah satunya adalah Biobarrier. Biobarrier merupakan penggabungan teknik adsorpsi karbon aktif dan biodegradasi. Pada proses biobarrier digunakan elektron akseptor untuk mengoksidasi substrat yang teradsorp pada permukaan adsorben dengan bantuan bakteri sebagai katalis reaksi redoks. Bakteri membutuhkan elektron akseptor sebagai penghasil energi untuk reaksi aerob. Oksigen merupakan elektron akseptor yang paling disukai Bakteri. Oksigen yang digunakan sebagai elektron akseptor dalam bentuk NaNO3. Penelitian ini dilakukan untuk mengetahui pengaruh penambahan konsentrasi NaNO3 terhadap degradasi kontaminan serta pertumbuhan bakteri pada proses biobarrier. Pelaksanaan proses biobarrier diawali dengan tahap penjenuhan karbon aktif. Setelah karbon aktif jenuh, dilakukan tahap biodegradasi benzena dan toluena dengan menyuntikkan konsorsium bakteri dan penambahan NaNO3(elektron akseptor). Konsentrasi NaNO3 divariasikan yaitu 25 mg/L, 75 mg/L, 100 mg/L dan 125 mg/L. Tiap variasi berlangsung selama 57 jam dengan laju alir kontaminan 18,2 ml/menit dan laju alir elektron akseptor 1 ml/menit. Hasil yang diperoleh menunjukkan bahwa penambahan konsentrasi NaNO3 mempengaruhi laju degradasi benzena dan toluena serta pertumbuhan bakteri. Jumlah benzena dan toluena yang terdegradasi terbesar dan konsorsium bakteri dapat tumbuh optimal terjadi pada konsentrasi NaNO3 75 mg/L dengan jumlah oksigen yang dihasilkan sebesar 0.441 mmol/L. Penambahan konsentrasi NaNO3 menjadi 100 mg/L dan 125 mg/L menyebabkan lambatnya pertumbuhan bakteri dan berpengaruh pada penurunan degradasi benzena dan toluena.

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The organic contamination on water environment is a major problem at this present time. The organic contaminant which is found in the water environment is Benzene and Toluene. Many technology biological was do in order to eliminate this organic contaminant. One of this biotechnology called Biobarrier. Biobarrier is the combination of pollutant adsorption on granular activated carbon (GAC) and biodegradation. In this process, electron acceptor is used, in order to oxidation of organic substrates such as benzene-toluene on the adsorben surface with bacterial assist as redoks reaction catalytic. Bacterial need electron acceptor as energy produce for aerobic reaction. Oxygen is electron acceptor that most of bacterial liked. Source of oxygen which is used in this research from NaNO3. The research goal to know how addition of NaNO3 concentration can effect the degradation contaminant and how growth of bacterial consortium in this NaNO3 variation concentration on biobarrier process. Biobarrier process start with loading phase of activated carbon. After activated carbon is load by organic substrates (benzene-toluene), bacterial consortium and NaNO3 as electron acceptor is added to bioregenerator column (biodegradation process). The variation of NaNO3 are 25 mg/L, 75 mg/L, 100 mg/L, 125 mg/L. Interval of each variation are 57 hours with contaminant flowrate 18,2 ml/minute and the electron acceptor flowrate 1 ml/minute. The results showed that the additional amount of NaNO3 as electron acceptor influence the degradation rate of benzene-toluene and growth of bacterial consortium. Greatest degradation of benzene-toluene and the optimum growth of bacterial consortium occur on NaNO3 concentration 75 mg/L with amount of oxygen produce 0.441 mmol/L. Increased of NaNO3 concentration from 75 mg/L to 100 mg/L and 125 mg/L cause growth of bacterial consortium slowly and influence on decrease degradation of benzene-toluene."

"Rumah sakit sering menghasilkan limbah yang sangat berbahaya dan sulit di degradasi terutama limbah antibiotik yang mengandung Amoxicillin. Dalam penelitian ini limbah sintetis Amoxicillin akan diozonasi pada suasana basa (pH 10-11), asam (pH 3-4), dan netral (tidak ditambahkan asam ataupun basa, dengan pH sekitar 5-6.6) serta dengan menggunakan RHOP (Reaktor Hibrida Ozon-Plasma) sebagai reaktor. Namun metode ozonasi saja masih memiliki kekurangan seperti waktu proses yang cukup lama. Sehingga pada penelitian ini akan digunakan salah satu metode AOP (Advance Oxidation Process) yaitu dengan menambahkan H2O2 setelah ozonasi berlangsung dan biasa disebut dengan proses Perokson. Proses perokson ini akan dibandingkan dengan sampel yang ditambahkan GAC (Granular Activated Carbon) saat proses berlangsung karena GAC mampu mempercepat dekomposisi ozon, sehingga akan terjadi peningkatan jumlah hidroksi radikal yang dihasilkan. Pada akhirnya proses ozonasi akan semakin efektif dan kadar Amoxicillin dalam limbah cair tersebut dapat berkurang sampai 90-98%.

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Hospital wastewater is very dangerous and difficult to degrade especially antibiotic wastewater that containing Amoxicillin. In this study, the ozonation of synthetic Amoxicillin wastewater will occur in three ways, high acidity (pH 10-11), low acidity (pH 3-4), and neutral (no added, with acidity around 5-6.6) and using RHOP (Ozone Hybrid Reactor -Plasma) as the reactor. But the method of ozonation still has drawbacks such as long processing time. So in this study will be used one of the methods from AOP (Advanced Oxidation Process) by adding H2O2 after ozonation lasts and commonly referred to Peroxone process.

Peroxone process will be compared with samples that added a GAC (Granular Activated Carbon) during the process because the GAC is able to accelerate the decomposition of ozone, resulting in an increase in the amount of hydroxyl radicals generated. In the end, the process will be more effective and ozonation of Amoxicillin levels in wastewater can be reduced by 90-98%."

"ABSTRAKLimbah tekstil akan terus meningkat seiring dengan semakin beragamnya produksi industri tekstil. Fenolik adalah salah satu kandungan dalam limbah tekstil yang dianggap dapat menyebabkan toksisitas akut dan efek karsinogenik, maka dari itu diperlukan pengolahan bagi limbah yang mengandung senyawa fenolik. Teknik ozonasi katalitik adalah metode yang efektif untuk pengolahan air limbah karena kemampuan katalis untuk menghasilkan radikal yang sangat reaktif dari dekomposisi ozon yang memaksimalkan degradasi fenol dalam limbah tekstil. Karbon aktif jenis granular digunakan sebagai katalis dalam penelitian ini karena kemampuan adsorpsinya yang baik. Penelitian ini bertujuan untuk membandingkan efektivitas teknik ozonasi katalitik dengan teknik ozonasi tunggal untuk proses degradasi senyawa fenolik 4-klorofenol dan fenol dalam reaktor kolom gelembung. Dari hasil penelitian, didapatkan bahwa dalam proses degradasi 60 menit dengan teknik ozonasi tunggal untuk 4-klorofenol dapat mencapai 62,79 dalam kondisi basa pH sekitar 10 . Keberadaan GAC granular activated carbon dalam teknik ozonisasi katalitik mampu meningkatkan degradasi 4-klorofenol menjadi 100 di bawah kondisi asam atau netral pH sekitar 5 atau 7 . Kondisi optimal diperoleh ketika menggunakan laju aliran udara 12 lpm, menggunakan sistem injeksi multi ozon, dan penggunaan laju alir air limbah 250 mL/menit

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ABSTRACTNaturally, textile waste and its complexity will grow significantly in tandem with the increasingly diverse production of the textile industry. Phenolic is one of the contents in textile wastewater that considered and treated as well as may cause acute toxicity and carcinogenic effectsCatalytic ozonation techniqueis an effective method of wastewater treatment, due to catalyst rsquo s ability to produce the highly reactive radicals from the decomposition of ozone which maximize the degradation of phenol in textile wastewater. Granular activated carbon is used as catalyst in this study due to its adsorption ability. This study aims to compare the effectiveness of catalytic ozonation technique with ozonation technique to degrade phenolic compounds 4 chlorophenol and phenol in bubble column reactor. From experiment result, it was found that in 60 minutes degradation process of 4 chlorophenol with single ozonation technique can reach 62.79 under basic condition pH about 10 . The existence of GAC granular activated carbon in catalytic ozonation technique was able to increase the degradation of 4 chlorophenol to 100 under acid or neutral conditions pH about 5 or 7 . The optimum condition of the degradation process was obtained by using air flow rate 12 LPM, using a multi ozone injection system, and the use of wastewater flow rate 250 mL min. "

"[ABSTRAKPenelitian ini bertujuan untuk mengurangi polutan dalam perairan yang salah satunya disebabkan oleh limbah cair tekstil dengan menggunakan teknik ozonasi katalitik. Digunakan UV254nm dan katalis GAC (Granular Carbon Active) batok kelapa serta batu bara yang akan meningkatkan prosentase penyisihan fenol dan turunannya dalam limbah cair industri tekstil. Perlakuan terbaik untuk penggunaan GAC batok kelapa adalah konfigurasi ozon+GAC100+UV dengan prosentase penyisihan fenol sebesar 95,87%, TOC 29,49% (dari 50,53 mg/L menjadi 35,6 mg/L), dan penyisihan COD 59,46% sedangkan ozon+GAC100 lebih rendah dengan penyisihan fenol sebesar 78,07%, TOC 13,39%, dan COD 58,97%. Sedangkan perlakuan terbaik untuk penggunaan GAC batu bara adalah konfigurasi ozon+GACC50+UV dengan prosentase penyisihan fenol sebesar 88,56%, TOC 32,52% (dari 50,53 mg/L menjadi 34,1 mg/L), dan penyisihan COD 59,63% sedangkan ozon+GACC50 lebih rendah dengan penyisihan fenol sebesar 78,07%, TOC 19,06%, dan COD 57,89%.

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ABSTRACTThe research goal is decreasing water pollution using catalytic ozonation technique because of textile effluent. Adding UV254nm with GAC (Granular Carbon Active) coconut and charcoal in configuration will increase percentage phenol elimination and derivate in textile effluent which got sedimentation tank (active sludge treatment). The result for GAC coconut is ozon+GAC100+UV configuration with percentage phenol elimination 95,87%, TOC 29,49% (from 50,53 mg/L into 35,6 mg/L), and COD 59,46%. In other hand, ozon+GAC100 configuration lower than adding UV with percentage phenol elimination 78,07%, TOC 13,39%, and COD 58,97%. another GAC (charcoal) had a best result is ozon+GACC50+UV with percentage phenol elimination 88,56%, TOC 32,52% (from 50,53 mg/L into 34,1 mg/L), and COD 59,63%. In the fact, without adding UV, ozon+GACC50 has less percentage phenol elimination 78,07%, TOC 19,06%, dan COD 57,89%.;The research goal is decreasing water pollution using catalytic ozonation technique because of textile effluent. Adding UV254nm with GAC (Granular Carbon Active) coconut and charcoal in configuration will increase percentage phenol elimination and derivate in textile effluent which got sedimentation tank (active sludge treatment). The result for GAC coconut is ozon+GAC100+UV configuration with percentage phenol elimination 95,87%, TOC 29,49% (from 50,53 mg/L into 35,6 mg/L), and COD 59,46%. In other hand, ozon+GAC100 configuration lower than adding UV with percentage phenol elimination 78,07%, TOC 13,39%, and COD 58,97%. another GAC (charcoal) had a best result is ozon+GACC50+UV with percentage phenol elimination 88,56%, TOC 32,52% (from 50,53 mg/L into 34,1 mg/L), and COD 59,63%. In the fact, without adding UV, ozon+GACC50 has less percentage phenol elimination 78,07%, TOC 19,06%, dan COD 57,89%.;The research goal is decreasing water pollution using catalytic ozonation technique because of textile effluent. Adding UV254nm with GAC (Granular Carbon Active) coconut and charcoal in configuration will increase percentage phenol elimination and derivate in textile effluent which got sedimentation tank (active sludge treatment). The result for GAC coconut is ozon+GAC100+UV configuration with percentage phenol elimination 95,87%, TOC 29,49% (from 50,53 mg/L into 35,6 mg/L), and COD 59,46%. In other hand, ozon+GAC100 configuration lower than adding UV with percentage phenol elimination 78,07%, TOC 13,39%, and COD 58,97%. another GAC (charcoal) had a best result is ozon+GACC50+UV with percentage phenol elimination 88,56%, TOC 32,52% (from 50,53 mg/L into 34,1 mg/L), and COD 59,63%. In the fact, without adding UV, ozon+GACC50 has less percentage phenol elimination 78,07%, TOC 19,06%, dan COD 57,89%., The research goal is decreasing water pollution using catalytic ozonation technique because of textile effluent. Adding UV254nm with GAC (Granular Carbon Active) coconut and charcoal in configuration will increase percentage phenol elimination and derivate in textile effluent which got sedimentation tank (active sludge treatment). The result for GAC coconut is ozon+GAC100+UV configuration with percentage phenol elimination 95,87%, TOC 29,49% (from 50,53 mg/L into 35,6 mg/L), and COD 59,46%. In other hand, ozon+GAC100 configuration lower than adding UV with percentage phenol elimination 78,07%, TOC 13,39%, and COD 58,97%. another GAC (charcoal) had a best result is ozon+GACC50+UV with percentage phenol elimination 88,56%, TOC 32,52% (from 50,53 mg/L into 34,1 mg/L), and COD 59,63%. In the fact, without adding UV, ozon+GACC50 has less percentage phenol elimination 78,07%, TOC 19,06%, dan COD 57,89%.]"