Jurnal Teknik Kimia dan Lingkungan
Vol. 3 No. 2 (2019): October 2019

Studi Aktivitas Reaksi Fotokatalisis Berbasis Katalis TiO2-Karbon Aktif Terhadap Mutu Air Limbah Power Plant

Ade Sonya Suryandari (Jurusan Teknik Kimia, Politeknik Negeri Malang)
Asalil Mustain (Jurusan Teknik Kimia, Politeknik Negeri Malang, Indonesia)
Dana Wahyu Pratama (Jurusan Teknik Kimia, Politeknik Negeri Malang, Indonesia)
Inayatul Maula (Jurusan Teknik Kimia, Politeknik Negeri Malang, Indonesia)



Article Info

Publish Date
31 Oct 2019

Abstract

Pengolahan air limbah merupakan proses mengolah air buangan yang sudah tidak terpakai untuk dapat dikembalikan ke siklus air di lingkungan. Unit Waste Water Treatment Plant (WWTP) PT. Indonesia Power digunakan untuk mengolah air limbah yang berasal dari berbagai sumber salah satunya yaitu HRSG Sump Pit. Buangan air limbah yang berasal dari HRSG Sump Pit memiliki kandungan fosfat dikarenakan adanya penambahan fosfat pada unit sebelumnya yang bertujuan sebagai inhibitor proses korosi. Karakteristik limbah cair dapat ditentukan dari beberapa parameter diantaranya nilai pH, optical density (OD), dan kadar fosfat. Pengolahan air limbah dilakukan agar limbah cair yang dihasilkan dapat memenuhi baku mutu yang dipersyaratkan sebelum dibuang ke lingkungan. Penelitian ini dilakukan dengan mengaplikasikan reaksi fotokatalisis berbasis katalis TiO2/karbon aktif pada berbagai komposisi katalis dan durasi penyinaran. Proses fotokatalisis dilakukan dengan penambahan katalis pada perbandingan komposisi TiO2/karbon aktif 10:1, 5:1, 3:1 dan 2:1. Sedangkan lama waktu penyinaran 3, 4, 5, dan 6 jam. Hasil penelitian menunjukkan bahwa pH terendah sesuai baku mutu yaitu 8,13 dan penurunan kadar fosfat sebesar 70,12% mampu dicapai pada komposisi katalis TiO2/karbon aktif 3:1 dengan durasi penyinaran 5 jam. Penurunan OD tertinggi dicapai pada kondisi perbandingan komposisi katalis TiO2/karbon aktif 10:1 dan durasi penyinaran 6 jam yaitu sebesar 98,86%. Water treatment is the process of treating water discharges that are not used to be discarded into the environment. Wastewater Treatment Unit Plant (WWTP) of PT. Indonesia Power is used to treat wastewater coming from several sources, one of which is HRSG Sump Pit. Wastewater from the HRSG Pit contains phosphate which is related to the phosphate addition in the previous unit which is needed as an inhibitor of corrosion process. The characteristics of liquid waste can be determined from several parameters such as pH value, optical density (OD), and phosphate content. Wastewater treatment is carried out to obtain liquid waste which comply to the quality standards before being discarded into the environment. This research was carried out by applying the photocatalysis reaction based on catalyst TiO2-activated carbon with various catalyst compositions and irradiation duration. The process of photocatalysis was carried out by adding catalysts to the ratio of the composition of TiO2 / activated carbon 10:1, 5:1, 3:1 and 2:1. While the irradiation time is 3, 4, 5 and 6 hours. The results show that the lowest pH according to quality standards was 8.13 and a reduction in phosphate content of 70.12% was achieved in the 3: 1 TiO2/activated carbon catalyst composition with a 5-hour irradiation duration. The highest OD reduction was achieved under the condition ratio of catalyst composition of TiO2/activated carbon 10:1 and the irradiation duration of 6 hours that was equal to 98.86%.

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Journal Info

Abbrev

jtkl

Publisher

Subject

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

Description

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 ...