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Jurnal Teknik Kimia dan Lingkungan

jtkl
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Published by Politeknik Negeri Malang

ISSN : 25798537 EISSN : 25799746 DOI : http://dx.doi.org/10.33795/jtkl

Core Subject : Science, Engineering,

Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

JTKL editors welcome manuscripts in the form of research articles, literature review, or case reports that have not been accepted for publication or even published in other scientific journals. Articles published in cover key areas in the development of chemical and environmental engineering sciences, such as: Energy Waste treatment Unit operation Thermodynamic Process simulation Development and application of new material Chemical engineering reaction Biochemical Biomass Corrosion technology The "JURNAL TEKNIK KIMIA DAN LINGKUNGAN" journal is a peer-reviewed Open Access scientiﬁc journal published by Politeknik Negeri Malang. This journal ﬁrst appeared in October 2017. The main purpose of the journal was to support publication of the results of scientiﬁc and research activities in the field of Chemical and Environmental Engineering. It is published twice a year in April and October.

Arjuna Subject : Teknik Kimia (semua kategori) - Kimia Proses dan Teknologi

Articles 133 Documents

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Pengaruh Volume Solvent dan Berat Biji Alpukat (Persea Americana Mill) TerhadapYield dan Karakteristik Hasil Ekstraksi Ary Rahmady Pratama; Eko Ariyanto; Mardwita Mardwita
Jurnal Teknik Kimia dan Lingkungan Vol. 5 No. 2 (2021): October 2021
Publisher : Politeknik Negeri Malang

Biji buah alpukat (Persea americana) merupakan sumber limbah biomassa yang dapat dimanfaatkan sebagai sumber energi alternatif. Pada bagian biji alpukat mengandung selulosa, hemiselulosa, lignin, lipid, protein. Tujuan dari penelitian ini adalah menganalisa pengaruh berat biji alpukat dan solvent n heksana terhadap persentase yield minyak biji alpukat dan mengetahui karakteristik persentase FFA, kadar air, impurities, bilangan iodine, bilangan peroksida dan bilangan saponifikasi minyak dari biji alpukat yang dihasilkan dari proses ekstraksi. Metode penelitian ini dilakukan dengan mengestraksi biji alpukat menggunakan soklet ekstraksi dan solvent n-heksana dengan temperatur 70 °C, tekanan 1 atm dan waktu 240, 360, 480 menit. Hasil penelitian menunjukan variabel berat biji alpukat, volume pelarut dan lamanya waktu ekstraksi mempengaruhi peningkatan jumlah minyak biji alpukat yang dihasilkan. Dari penelitian yang dilakukan yield tertinggi dihasilkan dari ekstraksi biji alpukat adalah sebesar 30,15 % pada variabel massa biji 60 gram, waktu ekstraksi 480 menit dan volume pelarut 300 ml. Hasil analisa kualitas minyak biji alpukat terhadap persentase FFA, kadar air, impurities, bilangan iodine, bilangan peroksida dan bilangan saponifikasi telah memenuhi standar SNI. Namun pada analisa impurities pada proses ekstraksi biji alpukat 60 gram dengan volume n-heksana 300 ml melebihi standar SNI. Hasil uji Gas Chromatography menunjukkan bahwa minyak biji alpukat mengandung senyawa asam lemak dan konsentrasi oleic acid adalah yang tertinggi dibandingkan unsur kimia yang lain. Avocado seeds (Persea americana) are biomass waste that can be used as an alternative source of energy. Avocado seeds contain cellulose, hemicellulose, lignin, lipids, and protein. This research studied the effects of avocado seed weight and n-hexane solvent on the percentage of avocado seed oil yield and determined the characteristics of the FFA percentage, water content, impurities, numbers of iodine, peroxide and oil saponification of obtained from the extraction process. Avocado seeds were extracted using an extraction sox and n-hexane solvent at 70 °C, 1 atm and time 240, 360, 480 minutes. The results showed that avocado seed weight, solvent volume and extraction time affected the amount of avocado seed oil yield. The highest yield was 30.15% obtained from seed mass of 60 grams with 480 minute extraction time and 300 ml solvent. The results also showed that the quality of avocado seed oil in relation to FFA percentage, moisture content, impurities, iodine number, peroxide number and saponification number have fulfilled the SNI standards. However, the analysis of impurities in the extraction process of 60 grams of avocado seeds with a volume 300 ml of n-hexanes exceeds the SNI standard. The Gas Chromatography test showed that vocado seed oil contained fatty acid compounds with highest concentration of oleic acid among other chemical elements.

Produksi Crude Selulase dari Limbah Kayu Mahoni Menggunakan Phanerochaete chrysosporium Sri Rulianah; Christyfani Sindhuwati; Prayitno Prayitno
Jurnal Teknik Kimia dan Lingkungan Vol. 3 No. 1 (2019): April 2019
Publisher : Politeknik Negeri Malang

Limbah kayu mahoni dapat dikategorikan sebagai limbah lignoselulosa yang dapat dimanfaatkan sebagai bahan baku pembuatan biofuel, seperti bioetanol. Selulosa pada limbah kayu mahoni dapat dimanfaatkan sebagai bahan baku produksi crude selulase dengan bantuan kapang Phanerochaete chrysosporium. Crude selulase yang dihasilkan memiliki nilai ekonomis yang tinggi dan dapat dimanfaatkan dalam berbagai bidang. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh waktu fermentasi dan penambahan konsentrasi serbuk kayu mahoni terhadap aktivitas crude selulase, dan untuk mengetahui kondisi operasi terbaik sehingga diperoleh crude selulase dengan aktivitas yang tertinggi. Produksi crude selulase dari limbah kayu mahoni melalui beberapa tahapan yaitu, size reduction, peremajaan dan pembuatan inokulum kapang Phanerocheate chrysosporium, produksi crude selulase dan uji aktivitas selulase dengan metode DNS. Variabel berubah pada penelitian ini adalah % penambahan serbuk kayu mahoni pada media pembuatan crude selulase yaitu 5%, 6% dan 7%, dan waktu inkubasi pembuatan crude selulase yaitu 9, 11, 13, 15 dan 17 hari. Hasil penelitian menunjukkan, semakin lama waktu fermentasi, dan semakin tinggi jumlah penambahan serbuk kayu mahoni, maka aktivitas selulase yang dihasilkan semakin tinggi. Kondisi operasi terbaik diperoleh pada waktu inkubasi selama 17 hari, dan jumlah penambahan serbuk kayu mahoni 7% , diperoleh aktivitas crude selulase sebesar 39,034 U/ml. Mahogany waste can be categorized as lignocelluloses waste which can be used as raw material of biofuel such as bioethanol. Cellulose in mahogany can also be utilized as crude cellulose raw material with the help of Phanerochaete chrysosporium. Crude selulase produced has high economic value and can be utilized in many sectors. This research is aim to determine the effect of fermentation time and the addition of mahogany concentration on crude cellulase activity, and to determine the best operating conditions. Crude cellulase production from waste of mahogany through several steps, those are size reduction, rejuvenation and inoculum production of Phanerocheate chrysosporium, crude cellulase production and activity test with DNS method. The variable in this experiment was the precentage of mahogany powder added on crude cellulase production media which was 5%, 6% and 7%, and incubation time of crude cellulase production which were 9, 11, 13, 15 and 17 days. The experiment shows that the highest cellulase activity was at concentration of mahogany powder of 7% with incubation time of 17days as 39,034 U/ml.

Karakterisasi Biodegradable Foam dari Pati Sagu Termodifikasi dengan Kitosan Sebagai Aditif Nanik Hendrawati; Ernia Novika Dewi; Sandra Santosa
Jurnal Teknik Kimia dan Lingkungan Vol. 3 No. 1 (2019): April 2019
Publisher : Politeknik Negeri Malang

Biodegradable foam merupakan kemasan alternatif pengganti styrofoam yang menggunakan bahan baku utama berupa pati sehingga kemasan tersebut dapat terurai secara alami. Namun, produk biodegradable foam yang dihasilkan masih memiliki karakteristik sifat yang rendah. Penelitian ini dilakukan untuk mengetahui pengaruh penambahan konsentrasi kitosan terhadap karakteristik sifat biodegradable foam yang dihasilkan dari pati sagu alami dan termodifikasi menggunakan metode hidrolisis asam – alkohol. Jenis asam yang digunakan pada hidrolisis asam adalah HCl. Konsentrasi kitosan yang ditambahkan pada penelitian ini divariasikan mulai dari 0, 5, 10, 15, 20, 25, 30 % w/w dari pati. Pembuatan biodegradable foam dilakukan menggunakan metode baking process yang dimulai dengan percampuran bahan selain pati sagu termodifikasi, dilakukannya pengadukan hingga campuran menjadi homogen dan mengembang, dan dipanggang didalam oven dengan suhu 125ºC. Analisa pada biodegradable foam adalah analisa daya serap air, analisa kemampuan daya urai dan uji tarik. Hasil penelitian menunjukkan bahwa modifikasi asam – alkohol pada pati sagu tidak mempengaruhi gugus fungsi. Sifat mekanis biodegradable foam yang terbaik pada penelitian ini diperoleh menggunakan pati sagu termodifikasi HCl dan penambahan kitosan sebesar 20% w/w yang memiliki daya serap 4,95 %, densitas sebesar 1.2 g/m3 kemampuan degradasi sebesar 25.12 % dan kekuatan tarik sebesar 1,27 Mpa Biodegradable foam is an alternative packaging for styrofoam which uses the main raw material in the form of starch so that the packaging can be decomposed naturally. However, the biodegradable foam products produced still have low characteristics. This research is conducted to determine the effect of the addition of chitosan concentration on the characteristics of biodegradable foam properties produced from natural sago and modified sago starch using acid-alcohol hydrolysis method. The type of acid used in acid hydrolysis is HCl. The concentrations of chitosan added in this study are varied from 0, 5, 10, 15, 20, 25, 30% w / w of starch. Biodegradable foam production is carried out by using the baking process method which begins with the mixing of ingredients other than modified sago starch, stirring until the mixture becomes homogeneous and expands, and baked in an oven at 125ºC. The caracterisation of biodegradable foam are water absorption analysis, biodegradability analysis, and tensile test. The results show that modification of acid-alcohol on sago starch do not affect the functional group. The best mechanical properties of biodegradable foam in this research are obtained by using HCl-modified sago starch and addition of chitosan by 20% w / w which have an absorption capacity of 4.95%, density of 0.6 g / m3, degradation ability of 25.12% and tensile strength of 1.27 MPa.

Transesterifikasi In Situ Minyak Biji Pepaya Menjadi Metil Ester dengan Co-Solvent N-Heksana Menggunakan Microwave Daryono, Elvianto Dwi; Sintoyo, Adi; Gunawan, Rendi Chandra
Jurnal Teknik Kimia dan Lingkungan Vol. 4 No. 1 (2020): April 2020
Publisher : Politeknik Negeri Malang

In the dry weight of papaya seed oil contains up to 30%, so the potential to be used as raw material for biodiesel. Transesterification in situ is a simple step to produce biodiesel that is by eliminating extraction process and refining of oil so it can save on production costs and give satisfactory results. The reaction of one phase can be formed by adding a co-solvent to increase the solubility of oils. N-hexane is a co-solvent that is best because it is inexpensive, non-reactive and low boiling point (68°C) so that it can be separated by co-distillation with methanol. Microwave can propagate passed through the liquid so that the heating process will take place more effectively and the process of making biodiesel can be made shorter. In this study the variation of power used is 30%, 50% and 70% of 399 watts and the reaction time is 2,4,6,8 and 10 minutes. Results were analyzed by GC (Gas Chromatography). The optimum yield was 89.25% at 70% power and reaction time 8 minutes. The optimum yield has a density of 0.86 g / cm 3 and has an acid number of 0.28 mg KOH/g sample. These results have met the SNI 7182:2015.

Pengaruh Suhu Sintesis Katalis Partikel Ceria Zirconia terhadap Efektivitas Proses Delignifikasi Okky Putri Prastuti; Fandi Angga Prasetya; Ufafa Anggarini; Rifqi Putera Herwoto; Hesty Rahayu
Jurnal Teknik Kimia dan Lingkungan Vol. 4 No. 1 (2020): April 2020
Publisher : Politeknik Negeri Malang

Biomass is organic material produced through photosynthetic processes. The presence of lignin on the cell wall will inhibit cellulose to be converted into products. Delignification will open the lignocellulose structure to make cellulose more accessible. The delignification process can be done by adding the Ceria-Zirconia catalyst to the biomass sample. The aim of this research is to determine the effect of synthesis temperature on Ceria Zirconia synthesis and to investigate the ability of Ceria Zirconia as a biomass delignification catalyst. Ceria- Zirconia Catalyst can be produced through the batch hydrothermal method. The precursors used were chemical solutions in the form of Ce(NO3)3.6H2O and ZrO(NO3)2.2H2O 0.06 M with a ratio of 1: 1, the synthesis temperature variables used were of 180oC, 200oC dan 220oC. Ceria Zirconia Catalysts will then be analyzed for their abilities through a 10 and 20 minute delignification process. The results showed that the increasing synthesis temperature will increase the ability of Ceria-Zirconia catalyst in the delignification process.

Planning Advanced Treatment of Tap Water Consumption in Universitas Pertamina Hafizha Hasnaningrum; Betanti Ridhosari; I Wayan Koko Suryawan
Jurnal Teknik Kimia dan Lingkungan Vol. 5 No. 1 (2021): April 2021
Publisher : Politeknik Negeri Malang

The wastewater treatment plant (WWTP) in Universitas Pertamina’s area is operating very well. The existence of a green campus program with a wastewater recycling indicator has become one of the challenges. Improving the WWTP effluent quality by adding an advanced treatment unit. This study aims to design advanced processing units and estimate the effluent yields and required costs. This study was conducted by conducting a field survey, collecting water quality data, and literature study. With planning discharge (Qpeak) of 8.45 m3 /hour, the land area required for the addition of advanced treatment is 105.85 m2 . Advanced treatment consists of 1 unit of Equalization Tank, 2 units of slow sand filter, 1 unit of sand washer, 2 units of microfiltration membrane, 1 disinfection body, and 2 reservoir units. These units it is expected to make effluent quality meets the drinking water quality standards with a TSS value of 0 mg/L, Ammonia (NH3-N) 0.35 mg/L, Organic Substances (KmnO4) 0.513 mg/L, Total Dissolved Solids (TDS) 23 mg/L, and Total Coliform 0 Total/100 ml of sample. The total cost needed to build an advance treatment for tap water consumption is Rp 374,727,334.

Review: Potensi Tandan Kosong Kelapa Sawit sebagai Bahan Baku Pembuatan Bioetanol dengan Metode Fed Batch pada Proses Hidrolisis Christyfani Sindhuwati; Asalil Mustain; Yasinta Octaliya Rosly; Andika Soharmat Aprijaya; Mufid Mufid; Ade Sonya Suryandari; Hardjono Hardjono; Sri Rulianah
Jurnal Teknik Kimia dan Lingkungan Vol. 5 No. 2 (2021): October 2021
Publisher : Politeknik Negeri Malang

Peningkatan kebutuhan energi terutama bahan bakar minyak yang tidak diimbangi dengan ketersediaan sumber energi tak terbarukan akan mengakibatkan kelangkaan energi. Pembuatan bahan bakar terbarukan merupakan solusi untuk mengatasi kelangkaan tersebut, salah satunya bioetanol. Biomassa Tandan Kosong Kelapa Sawit (TKKS) merupakan bahan baku yang cocok untuk pembuatan bioetanol karena jumlahnya yang melimpah dan mengandung lignoselulosa. Bioetanol dapat diperoleh melalui proses fermentasi dengan metode yang digunakan adalah Fed Batch Simultaneous Saccharification Fermentation. Pretreatment berupa size reduction dan delignifikasi direkomendasikan sebelum proses hidrolisis enzimatik dan fermentasi secara serentak. Metode pengumpanan Fed Batch pada High Total Solid Loading (HTSL) direkomendasikan sebagai strategi pengumpanan pada proses hidrolisis enzimatik dengan jumlah frekuensi yang tinggi memberikan hasil kadar etanol lebih tinggi. The enhancement of energy needs, especially fuel, that is not complemented by the availability of non-renewable energy sources, would affect the deficient of energy. The production of renewable fuel such as bioethanol is a solution to overcome that deficiency. One of the substrates that are appropriate to be processed into bioethanol is Oil Palm Empty Fruit Bunch (OPEFB) because of abundant and lignocellulosic biomass. Bioethanol can be produced through the fermentation process by Fed-Batch Simultaneous Saccharification Fermentation method. Size reduction and delignification for pretreatment are recommended before the simultaneous enzymatic hydrolysis process and fermentation. Using the fed-batch as a feeding method of High Total Solid Loading (HTSL) is recommended for feeding strategy in hydrolysis enzymatic process with high frequency that can produce a higher yield of ethanol.

Uji Kinerja Sensor Molecularly Imprinted Polymer (MIP) Simazin secara Potensiometri Yohandri Bow; Adi Syakdani; Indah Purnamasari; Rusdianasari Rusdianasari
Jurnal Teknik Kimia dan Lingkungan Vol. 5 No. 2 (2021): October 2021
Publisher : Politeknik Negeri Malang

Molecularly Imprinted Polymer (MIP) adalah polimer sintetis dengan rongga yang spesifik untuk molekul target. Rongga (cavities) diperoleh akibat pembuangan template, dimana rongga tersebut berfungsi mengenal molekul dengan ukuran, struktur serta sifat-sifat fisika kimia yang sama dengannya. Polimer yang dihasilkan dari teknik MIP ini diterapkan pada permukaan material sensor sebagai instrumen pendeteksi dan penganalisis simazin. Keunggulan dari MIP adalah sistem sensor yang telah mampu memberikan hasil analisis suatu cemaran secara cepat, mudah dan dalam konsentrasi yang rendah (ppm). Tujuan dari penelitian ini adalah membuat MIP simazin sebagai sensor cemaran dan uji kinerja secara potensiometri. Hasil penelitian mendapatkan kondisi optimum pembuatan Molecularly Imprinted Polymer (MIP) simazin diperoleh dengan komposisi 6,02 mL kloroform; simazin 0,025 g; 0,9 mL methacrylic acid (MAA); 1,57 mL ethylene glycol methacrylic acid (EGMA); 0,07 g benzoyl peroxide (BPO) dengan waktu pemanasan selama 150 menit pada temperatur 70oC. Uji kinerja sensor dilakukan secara potensiometri dan diperoleh sensor MIP simazin yang dibuat memiliki sensitivitas dan stabilitas pada rentang konsentrasi 0,01-1,0x10-3 ppm dengan batas deteksi sebesar 0,01x10-3 ppm dan masa pakai mencapai 90 hari. Molecularly Imprinted Polymer (MIP) is a technique of polymer preparation derived from crosslinked polymers and it has cavities that are appropriate with templates. Those cavities also functions as media of molecular mechanical interaction that have the same size, shape, structure and physical chemistry. Polymers resulted from MIP techniques are applied on the surface of the sensor material as detecting instrument and analyzer of simazine. The advantages of MIP are based on its sensor systems that have been able to provide quick and easy pollutant analysis results (ppm). The aim(s) of this research are to synthesize MIP simazine as sensors of pollutant and performance with potentiometric. In the result of the research, it is shown the optimum condition of Molecularly Imprinted Polymer (MIP) simazine obtained with composition of 6.02 mL chloroform; 0.025 g simazine; 0.9 mL methacrylic acid (MAA); 1.57 mL ethylene glycol methacrylic acid (EGMA); 0.07 g benzoyl peroxide (BPO) with heating time 150 minutes at 70oC. The sensor performance test was carried out in potentiometric way and it was got that the designed MIP simazine has sensitivity and stability in the concentration range of 0.01-1.0x10-3 ppm with detection limit of 0.01x10-3 ppm, and life time reached 90 days.

Panas Pretreatment Tandan Kosong Kelapa Sawit dengan Sodium Hidroksida dan Asam Fosfat Jabosar Ronggur Hamonangan Panjaitan
Jurnal Teknik Kimia dan Lingkungan Vol. 5 No. 2 (2021): October 2021
Publisher : Politeknik Negeri Malang

Indonesia sebagai negara penghasil minyak kelapa sawit terbesar di dunia memiliki limbah tandan kosong kelapa sawit (TKKS) yang melimpah. TKKS ini dapat dikonversi menjadi berbagai bioproduk yang didahului dengan proses pretreatment. Pada penelitian ini akan diteliti perhitungan panas pretreatment TKKS dengan sodium hidroksida dan asam fosfat pada kondisi suhu rendah. Hasil penelitian menunjukkan bahwa panas pretreatment dengan menggunakan sodium hidroksida lebih tinggi dibandingkan dengan panas pretreatment dengan asam fosfat. Selain itu, berdasarkan variasi konsentrasi asam fosfat yang digunakan, semakin tinggi konsentrasi asam fosfat membuat panas pretreatment dengan menggunakan larutan asam fosfat semakin rendah. Perbedaan nilai panas pada pretreatment dengan menggunakan sodium hidroksida dan asam fosfat dipengaruhi oleh panas pembentukan dari masing-masing senyawa yang digunakan proses pretreatment. Panas pretreatment TKKS dengan 5% larutan sodium hidroksida menghasilkan panas sebesar 125 kJ. Sedangkan, panas pretreatment dengan menggunakan asam fosfat pada berbagai konsentrasi 70%, 75%, 80% dan 85% adalah 117 kJ, 103 kJ, 88 kJ dan 74 kJ. Indonesia as the largest palm oil producing country in the world has abundant oil palm empty fruit bunches (OPEFBs). OPEFBs can be converted into various bioproducts which are preceded by pretreatment process. This research investigated the heat calculation of OPEFBs pretreatment with sodium hydroxide and phosphoric acid at low temperature conditions. The results showed that the heat using sodium hydroxide was higher than the heat using phosphoric acid. In addition, based on variation in phosphoric acid concentrations used, it was found that the higher concentration of phosphoric acid made the heat of phosphoric acid pretreatment became lower. The difference of heat value in sodium hydroxide and phosphoric acid pretreatment was influenced by the heat of formation in each compound used in the pretreatment process. Heat pretreatment of OPEFBs with 5% sodium hydroxide solution was 125 kJ. While, heat pretreatment using phosphoric acid at various concentrations of 70%, 75%, 80% and 85% were 117 kJ, 103 kJ, 88 kJ and 74 kJ.

Fotodegradasi Terkatalisis TiO2-H2O2 pada Pengolahan Limbah Cair Industri Mie Soun Kholidah Kholidah; Endang Tri Wahyuni; Eko Sugiharto
Jurnal Teknik Kimia dan Lingkungan Vol. 5 No. 2 (2021): October 2021
Publisher : Politeknik Negeri Malang

Fotodegradasi terkatalisis TiO2 telah terbukti efektif digunakan untuk mengolah limbah organik, sehingga dilakukan kajian fotodegradasi terkatalisis TiO2 pada limbah cair industri mie soun sebagai upaya untuk mengurangi pencemaran lingkungan di sekitar daerah produksi. Kajian penambahan oksidator H2O2 juga dilakukan untuk meningkatkan efektivitas fotodegradasi. Optimalisasi reaksi fotodegradasi dilakukan dengan optimasi variabel pH, massa fotokatalis, konsentrasi H2O2, dan waktu penyinaran. Parameter yang digunakan untuk menilai efektivitas fotodegradasi berupa penurunan kandungan Chemical Oxygen Demand (COD) limbah yang ditentukan dengan metode volumetri. Hasil penelitian menunjukkan bahwa limbah cair industri mie soun mempunyai kandungan COD awal sebesar 1920 mg L-1. Proses fotodegradasi terkatalisis TiO2 hanya dapat menurunkan kandungan COD limbah menjadi 1480 mg L-1 (22,92%), sedangkan penambahan H2O2 pada sistem fotokatalis TiO2 dapat meningkatkan penurunan kandungan COD menjadi 1120 mg L-1 (41,67%). Penurunan paling optimal tercapai pada pH 3, penggunaan 10 mg TiO2, penambahan 10 mM H2O2, dan waktu penyinaran UV selama 24 jam. Photocatalytic degradation over TiO2 has been proven to be effective in treating organic wastewater. So that a study of photocatalytic degradation over TiO2 in the cellophane noodles industrial wastewater was conducted as an effort to reduce environmental pollution around the production area. Studies on the addition of H2O2 as an oxidizing agents were also carried out to increase the effectiveness of photodegradation. Optimization of the photodegradation reaction was carried out by optimizing the variables of pH, photocatalyst mass, H2O2 concentration, and irradiation time. Chemical Oxygen Demand (COD) was used to assess the effectiveness of photodegradation and was determined by volumetric method. The results showed that the wastewater from the cellophane noodles industrial wastewater has an initial COD level of 1920 mg L-1. Photocatalytic degradation over TiO2 process can only reduce the COD level of the wastewater to 1480 mg L-1 (22.92%), while the addition of H2O2 to the TiO2 photocatalyst system can increase the decrease in the COD level to 1120 mg L-1 (41.67%). The most optimal decrease was achieved at pH 3, the use of 10 mg TiO2 , the addition of 10 mM H2O2, and UV irradiation time for 24 hours.

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Agung Ari Wibowo

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Jl. Soekarno Hatta No. 9, Malang, Indonesia

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Kota malang,

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