Study of Adsorption-Desorption on Batik Industrial Dyes (Naphthol Blue Black) on Magnetite Modified Humic Acid (HA-Fe3O4)

Abstract

The rapid development of the batik industry can pollute water resources and become an increasingly severe problem. This research studies the adsorption-desorption of naphthol blue-black (one of the dyes in batik liquid waste) by magnetite modified humic acid (HA-Fe 304 ). The adsorption isotherm was studied using the Langmuir and Freundlich isotherm models. Meanwhile, desorption agents used in this study were distilled water and hydrochloric acid. The results show that the adsorption isotherm followed the Langmuir adsorption model with a maximum adsorption capacity of 2.41 mmol / g. Desorption studies show that the desorption efficiency of naphthol blue-black on HA-Fe 304 is 0.058 % and 5.86 % in the desorption agent of distilled water and HC1 (1M)

Aplikasi Asam Humat Hasil Isolasi Tanah Gambut Kalimantan sebagai Adsorben Zat Warna Naphtol Blue Black dan Indigosol Blue: Studi Perbandingan Model Kinetika dan Isoterm Adsorpsi

“…Penggunaan zat warna dalam industri batik menimbulkan permasalahan lingkungan yang berasal dari limbah cair pewarnaan. Dalam proses pewarnaan batik, hanya sekitar 45% zat warna yang tertempel pada kain batik, sisanya terbuang pada proses pencucian [1]. Zat warna sintesis memiliki sifat non-biodegradable, toksik dan kelarutan yang tinggi [2].…”

“…Aplikasi adsorben asam humat sudah banyak dilaporkan berhasil dalam menurunkan kandungan zat warna dalam limbah simulasi maupun limbah asli [1,[5][6][7][8][9]. Asam humat (HA) merupakan fraksi senyawa humat yang terkandung dalam tanah gambut.…”

“…Model kinetika adsorpsi NBB dan IB pada HA hasil isolasi tanah gambut Kalimantan yang dipelajari adalah model kinetika orde satu semu Lagergren [15] dan model kinetika orde dua semu Ho [16]. Model kinetika orde satu semu Lagergren dinyatakan dengan persamaan (1).…”

Eco-friendly synthesis of magnetite based on tea dregs (Fe3O4-TD) for methylene blue adsorbent from simulation waste

“…Methylene blue is a synthetic dye widely used in the batik industry considering its advantage to make the batik color sharper, brighter, and longer-lasting. About 45% of the dye is attached to the batik cloth in the dyeing process, and the rest is decolorized in the washing process [1]. Liquid waste that contains dye from the washing process, however, potentially causes environmental problems because synthetic dyes are nonbiodegradable, toxic, and highly soluble [2].…”

“…In recent years, magnetic adsorbents have been developed [1,10,18]. They can facilitate the separation process between the post-adsorption adsorbent and the filtrate using an external magnetic field to minimize the use of filter paper and save separation time [1,8,16]. The most widely developed magnetic compound is magnetite (Fe3O4) because of its stability and paramagnetic properties.…”