@article{G.M.P. Kumara_Ken Kawamoto_2019, title={APPLICABILITY OF CRUSHED CLAY BRICK AND MUNICIPAL SOLID WASTE SLAG AS LOW-COST ADSORBENTS TO REFINE HIGH CONCENTRATE Cd (II) AND Pb (II) CONTAMINATED WASTEWATER}, volume={17}, url={https://geomatejournal.com/geomate/article/view/2157}, abstractNote={<p>Along with population growth, rapid urbanization, and industrialization, the generation of waste<br>and industrial by-products is increasing enormously and causing many environmental and social issues. In<br>order to examine effective applications of waste and industrial by-products, this study aimed to investigate the<br>effective use of crushed waste clay bricks (CCB) and municipal solid waste slag (MSWS) as low-cost<br>adsorbents to treat high concentrated wastewater. A series of batch adsorption experiments were carried out to<br>investigate the effects of contact time, initial concentration, pH, ionic strength, and competitive metals on Cd2+<br>and Pb2+ adsorption onto the tested adsorbents. The Langmuir model performed well by the fitting Cd2+ and<br>Pb2+ adsorption isotherms. The maximum adsorption capacity of Pb2+ (3.4-5.5 mg/g) was higher than the Cd2+<br>(2.3-3.2 mg/g) for both adsorbents. CCB showed high removal of metals, but a higher dependency on the metal<br>system (single, binary, or multi-metals). Interestingly, MSWS showed lower removal of metals but less<br>dependency on the metal system for Cd2+ and Pb2+. Adsorption of tested adsorbents was mainly controlled by<br>deprotonation or ion exchange at the natural pH, and at the higher pH (>9 for Cd2+ and >7 for Pb2+), surface<br>precipitation was the predominant mechanism for Cd2+ and Pb2+ removal (>60%). Overall, tested adsorbents<br>were showed comparatively good performance in treating high concentrated wastewater, but future studies<br>under different conditions and with modification to apply CCB and MSWS fines as better low-cost adsorbents<br>to treat wastewater are essential.</p> <p> </p>}, number={63}, journal={GEOMATE Journal}, author={G.M.P. Kumara and Ken Kawamoto}, year={2019}, month={Apr.}, pages={133–142} }