A research on the preparation of Carbon Waste Powder, CWP, was conducted and made from carbon rod waste which was extracted from used zinc-carbon batteries. This research was an effort to overcome environmental problem caused by battery waste by converting into adsorbent for methyl orange (MO) that frequently used by textile industries. The prepared powder was then analyzed to understand its characteristic peaks, crystallinity, and to compare the properties with other carbonaceous forms, i.e. a commercial Carbon Paper (CP), and a commercial meso- carbon micro-beads (MCMB). The analysis found that CWP is dominated by graphitic carbon. An adsorption experiment was then conducted to study their adsorption ability to methyl orange solution. The result found that those three carbonaceous materials have the ability to adsorb methyl orange with different activities. MCMB has the highest adsorption capacity of 0.197 mg.g-1. Meanwhile, CWP and CP show adsorption capacity of 0.066 mg.g-1 and 0.062 mg.g-1, respectively. Methyl orange adsorption on CWP and CP were under second order, which means the adsorption could be four times faster as the MO solution doubled. Moreover, the rate constant of MO adsorption on CWP is 8×10-4 min-1, which was higher than the rate constant of MO adsorption on CP. It confirmed that the CWP can be used as a promising adsorbent for dye waste water. Copyright © 2020 BCREC Group. All rights reserved

The learning process does not lead to character education, so the child's character needs to be improved. The lack of interesting learning media development is because teachers use monotonous learning media. There are no learning innovations that can attract children's interest. This research aims to create interesting storytelling media using corn husks to build children's character to be better and have good morals. This type of research is R & D research, with this research method referring to the theory of Borg and Gall, which consists of ten steps of research implementation. Research subjects with 15 students as the experimental and five as the control classes. Data collection techniques used were interviews, observation, and questionnaires. The analysis used in this research is quantitative and qualitative. The results of developing media using corn husks through storytelling techniques based on the validation of material experts and media experts are feasible for building polite, honest, and disciplined characters in children. Media development using corn husks through effective storytelling techniques is used to build polite, honest, and disciplined characters in Kindergarten Group B children with a t-test of 21,189 and a t-table of 4,381 or 21,189 more than 4,381. At the same time, the N-Gain score is 71 in the effective category.