Application of Natural Zeolite in Methylene Blue Wastewater Treatment Process by Adsorption Method

Abstract

Textile industry waste contains dyes that are difficult to decompose naturally and cause disruption of ecosystems in water. The colorant that is often used in the textile industry is methylene blue which is a cationic heterocyclic aromatic compound. This compound is so stable that it is difficult to decompose naturally and is harmful to the environment in large concentrations. Therefore, we need a waste treatment technology that can reduce the concentration of dye waste in water. So far, the adsorption method remains the most efficient and effective technique in removing dyes because of its relatively large adsorption capacity. One method that can be used is the adsorption method using natural zeolite. Zeolite is one of the non-metal mineral commodities or multipurpose industrial minerals, one of which is as an adsorbent or adsorbent media. This study aims to determine the potential of natural zeolite in absorbing methylene blue with variations in the concentration of methylene blue and various sizes of natural zeolite mesh. The procedures in this experiment include, the preparation of natural zeolite with size variations of 20-60 mesh, 60-100 mesh and> 100 mesh and variations in the concentration of methylene blue used 15 ppm, 30 ppm and 45 ppm with contact time from 0 to 180 minutes. From the results of the study it was found that the smaller the size of natural zeolite used, the greater the percentage of dye removal that is at mesh size> 100 mesh the percentage of dye removal was 32.11%. As for the variation of the concentration of methylene blue, the smaller the concentration, the natural zeolite can work optimally ie at a concentration of 15 ppm at 180 minutes the remaining methylene blue concentration of 0.145 ppm.

Mg/Al-CH, Ni/Al-CH and Zn/Al-CH, as adsorbents for Congo Red removal in aqueous solution

“…The use of synthetic dyes in textile industry has some positive impacts in regard to higher durability, stability and more color variations [1]. However, the waste of synthetic dye has a number of negative impacts, in terms of environmental pollution.…”

Aktivasi Zeolit Alam Sebagai Adsorben Pewarna Alami Kulit Buah Naga (Pitaya)

“…Pemanfaatan zeolit alam sebagai adsorben pewarna sudah cukup sering digunakan, Amelia & Maryudi [8] menggunakan pewarna methylene blue menghasilkan penyerapan warna menggunakan zeolit sekitar 32,11%, yellow dye juga pernah digunakan pada penelitian Alabbad [9] menujukkan bahwa zeolit 0,05 gram dapat menyerap yellow dye sekitar 58,63%, sementara pada penelitian Sarabadan et al [10] menggunakan pewarna kristal violet menunjukkan kapasitas adsorpsi maksimum zeolit alam adalah 177,75 mg/g. Berdasarkan beberapa penelitian tersebut dapat dilihat bahwa belum terdapat pewarna alami yang diaplikasikan sebagai bahan adsorbat pada zeolit.…”

Laboratory solid waste from practical activity as activated carbon precursor for reducing methylene blue in the laboratory wastewater

“…Selain itu, jika terhirup atau tertelan MB dapat berakibat mual, muntah, kebingungan mental dan lain-lain (Hameed et al, 2007). Berbagai metoda terus dikembangkan untuk menurunkan kadar metilen biru dari limbah cair sebelum dibuang ke lingkungan seperti penyerapan (adsorpsi) dengan karbon aktif (AC) (Etim et al, 2016), elektro-koagulasi (Mahmoud et al, 2013), zeolite bahan alam (Amelia & Maryudi, 2019) dan ozonisasi (D. Rodriguez-Lopez et al, 2013). Akan tetapi, proses penurunan MB pada limbah cair dengan metode tersebut memiliki kekurangan yaitu konsumsi energi yang tinggi dan biaya material yang mahal (Khodaie et al, 2013).…”