Metrics

  • visibility 271 views
  • get_app 154 downloads
description Journal article public Indonesian Journal of Applied Chemistry

Uji Pendahuluan Pemanfaatan Gas Karbondioksida Untuk Simulasi Pengolahan Limbah Cair Yang Mengandung Logam Berat Timah Mtam

Ardeniswan Ardeniswan
Published 2012

Abstract

Wastewater used in this experiment is an artificial wastewater containing lead. First, lead was precipitated with 0.1 M NaOH at pH 9 as hydroxide compound [Pb(OH)J. After Pb(OH)2 precipitated, CO2gas with a concentration of 16% isflowed as much as 120 mL with aflow rate of 120mLimin, where the lead remaining will settle to form lead carbonate (PbCOJ. A part of the precipitate was directly leached without any process of stabilization/ solidification and another part was leached after stabilization/solidification using Portland cement. Subsequent of precipitation that above were added of extraction solution with pH is 2.85 ± 0.05 in the ratio 1: 20. Leaching or TCLP test (Toxicity Characteristic leachate procedure) was conducted using a Rotary Agitator with a rotation speed of 30±2 rpmfor 18±2 hours. The TCLP test results showed that each compound PbC03 and Pb(OH)2 by weighing 1.5g without any solidification process were 91.34 ± 8.74 mg/L and 45.6 :I:0.14 mg/L respectively. These values were exceeds the required quality standardfor TCLP. While the compounds of PbC03 and Pb(OH)2 respectively with a weight of 1.5 g were carried out the stabilization / solidification withPortland cement in the ratio of 1:1:1 (cement: sand: solid waste), apparently both of lead ions fromPbC03 andPb(OH)2 were not leached.

Full text

 

Metrics

  • visibility 271 views
  • get_app 154 downloads