Phytoremediation of Batik Textile Industry Liquid Waste in Reducing Heavy Metal (Cr, Cu, and Pb) Levels with Mixed Aquatic Plants (Hydrilla Verticillata & Salvinia Molesta) Fajri Anugroho (a*), Gabriel tambunan (a), Bambang Suharto (a), Alexander Tunggul Sutan Haji(a), Yasa Palaguna Umar(a),
a) Faculty of Agricultural Technology, Department of Biosystems Engineering, Universitas Brawijaya, Jl. Veteran Malang 65145.
*fajri.anugroho[at]ub.ac.id
Abstract
The batik industry in Indonesia is growing very rapidly so that it is able to improve the economy, especially on a household scale (home industry). However, a production always produces waste, especially in batik production that uses chemicals. The liquid waste produced by the batik industry has the characteristics of being cloudy, frothy, has a high pH, contains alkaline oil, organic content (BOD, COD, and TSS), compounds produced by dyes, and the highest metal content is (Cr, Cu, and Pb). This study aims to evaluate changes in the levels of contaminants in the wastewater of the batik textile industry before and after remediation using Hydrilla (Hydrilla Verticillata) and Kiambang (Salvinia Molesta) plants. The study was conducted using an experimental method using a completely randomized design (CRD). The waste parameters tested in this study were heavy metals Cr, Cu, and Pb as well as supporting parameters by observing pH and temperature. Replications were carried out 3 times, then the data used to calculate the effectiveness of removal and the ANOVA test included data on Cr, Cu, Pb and plant weight levels. The results of this study indicate that phytoremediation of textile industry wastewater using Hydrilla (Hydrilla verticillata) and Kiambang (Salvinia molesta) plants can reduce Cr,Cu metal concentrations. And Pb. Hydrilla Verticillata plants were able to reduce Cr metal concentrations by 31%, Cu metal concentrations by 33.6%, and Pb metal concentrations by 61%. The Salvinia Molesta plant was able to reduce the concentration of Cr metal by 91.9%, the concentration of Cu metal by 60%, but the Pb concentration increased by 22% from the initial concentration.
Keywords: Phytoremediation- Liquid waste- Heavy metals- Hydralla plants- Kimbang plants
