Lead Adsorption onto Various Solid Surfaces

Handojo Djati Utomo

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Lead Adsorption onto Various Solid Surfaces

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Adsorption is becoming an important method in water and wastewater treatment technology at low concentrations. Pb2+ adsorption at low concentration onto various solid surfaces using either nano metal oxide of MnO2, or granulated activated carbon (GAC) or agricultural by-products such as tea leaves and coffee residue are considered promising. In this adsorption study the measurements were conducted by equilibrating Lead solutions at different concentrations range 19 - 291 μmol·L-1 with various adsorbent suspensions in the concentration range 0.388 - 8.738 g·L-1. Comparing all the adsorption capacities calculated using Langmuir equation Pb2+ adsorption by MnO2 shows the highest adsorption capacity with the estimated Γm = 528.0 μmol·g–1 at a fixed equilibrium constant K = 0.0119 L·μmoL-1. In addition, the Pb2+ adsorption by coffee residue is subject to a particle concentration effect in which the adsorption density decreases as the concentration of solid adsorbent Cs is increased. The Pb2+ adsorption by tea leaves, MnO2 and GAC shows less dependency to the concentration of solid adsorbent Cs, especially at lower metal ion concentrations. In the particular case of Pb2+ adsorption on MnO2 there appears to be no dependence on Cs.

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《自然资源（英文）》 |2015年第3期|152-158|共7页
作者
Handojo Djati Utomo;
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作者单位

School of Architecture and The Built Environment;

Division of Civil Engineering;

Singapore Polytechnic;

Singapore;

Department of Chemistry;

Marine and Freshwater Chemistry Laboratory;

University of Otago;

Dunedin;

New Zealand;

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原文格式 PDF
正文语种 chi
中图分类化学;
关键词
Adsorption; Coffee; Residue; GAC; Pb2+; Particle; Concentration; Effect; Tea; Leaves; Nano; Metal; Oxide; of; MnO2;

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Lead Adsorption onto Various Solid Surfaces

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