Evaluation of Pb (II) Removal from Water Using Sodium Alginate/Hydroxypropyl Cellulose Beads

Rodel Guerrero,Jane Maslog,Christine Joy Pacilan,Christine Marie Alarde,Catherine Acibar,A Soleh Setiyawan,H Dwi Ariesyady,M Sonny Abfertiawan,A Nastiti,D Roosmini

doi:10.1051/e3sconf/202014802002

Abstract

This study examined the removal of Pb2+ions from aqueous solution with two different lead concentrations using a hydrogel-forming polymer based on hydroxypropyl cellulose (HPC) and sodium alginate (SA). The feasibility of the adsorption behavior of SA/HPC beads has been investigated with three varying ratios of 50:50, 75:25 and 100:0 under a stir condition. The adsorption experiments were done to determine the effects of contact time, lead concentration and SA-HPC ratio to the adsorption capacity of SA-HPC hydrogel beads. The results showed that the ratio 75:25 showed higher adsorption capacity compared to 100:0 and 50:50. It showcased 47.72 mg/g adsorption capacity and 95.45% adsorption percentage after three hours of contact time. The adsorption kinetic model indicated that the adsorption of Pb2+ions onto the beads followed a pseudo-second order kinetic equation. This means that the adsorption mechanism shows a chemisorption process and its sole rate-limiting step is intraparticle diffusion.

Highlights

Landfill leachate is a dangerous liquid, because this black liquid consists of organic and inorganic compounds which can be very toxic to the environment and health because they can contain notable amounts of heavy metals
The adsorption capacities of the beads with varying ratios at a given time were measured with the data based on the amount of lead concentration left in the solution after the adsorption
Different solutions of 2 wt% of the sodium alginate (SA)/hydroxypropyl cellulose (HPC) were prepared by dissolving SA to HPC ratios of 100:0, 75:25, and 50:50 in distilled water

Summary

Introduction

Landfill leachate is a dangerous liquid, because this black liquid consists of organic and inorganic compounds which can be very toxic to the environment and health because they can contain notable amounts of heavy metals. Compared to conventional sorbent materials mentioned, hydrogel-based sorbents have been discovered to exhibit very high sorption capacities for removing heavy metals such as lead from water. These materials containing primarily of carboxyl and hydroxyl groups suggest that they are highly qualified in the adsorption of heavy metals from aqueous solutions.

Results

Conclusion