#TITLE_ALTERNATIVE#

• Main Author: RACHMANIA DWIPAYANI, ANDITA
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/25521
• Institution: Institut Teknologi Bandung

<p align="justify"> There are two sub researches that are conducted in this research, both researches were done batch at the room temperature. The first sub research is analysis of adsorption capability of clays for organic compounds removal (COD) from textile wastewater. In this research, the variables that examined were wastewater pH level, dosages of clays, and contact time on adsorption process. The wastewater that used were originated from effluents of textile production units with concentration of COD approximately 230-285 mg/L. The purpose of this research was to obtain the optimum conditions for the ability of both kinds of clays to remove COD parameter of waste water. After the optimum condition was obtained, analysis then carried out to the determination of adsorption kinetics for COD removal, using Langmuir and Freundlich isotherm models. Optimum conditions on the use of Arcamanik and Dago clays were at pH 7 and the dose of clays of 15 gr/L and 30 mg/L. COD removal reaches its stagnant level at the contact time of 120 minutes. At this condition, COD removal for Arcamanik and Dago clay reach 48.5% and 26.65%. Factors that affect the clay’s capability as adsorbent are associated by the morphological properties of clay. The second sub research is clay’s potential as coagulant aid for COD removal. The research variables <br /> <br /> that were conducted were variation of dosages of clay and wastewater pH level. For the use of 30 mg/L of alum coagulant, the addition of 30 mg/L of Arcamanik clay was able to improve the COD removal efficiency from 8.95% to 13.43%, while the use of Dago clays generate the COD removal to 16,98%. But this COD removal efficiency level was still lower than one with the use of 40 mg/L of alum, that is 17.9%<p align="justify">