Effectiveness of natural adsorbents in reducing Cu and Pb content of chemistry laboratory's wastewater treatment

13th Joint Conference on Chemistry

Hartini, Sri^1 ; Lakahina, Olvi^1 ; Ign Kristijanto, A.^1

Chemistry Study Program, Faculty of Science and Mathematics, Universitas Kristen Satya Wacana, Salatiga, Indonesia^1

关键词: Adsorption capacities;    Adsorption isotherm model;    Chemistry laboratory;    Freundlich isotherm model;    Honestly significant differences;    Laboratory wastewater;    Langmuir isotherm models;    Rice husk;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/509/1/012134/pdf
DOI  :  10.1088/1757-899X/509/1/012134

来源: IOP

【 摘 要 】

Recently, using natural adsorbent to solve wastewater problem is considered as environmentally step that supporting nature sustainability. Zeolite and rice husk are potential natural adsorbents which easily found surround human being. The aim at this research are to determine the effectiveness of weight ratio of zeolite and rice husk charcoal weight (RHCW) in lowering Cu and Pb parameter of liquid waste chemical laboratory and determine the adsorption isotherm models weight ratio of zeolite and RHCW. Data were analysed using Randomized Completely Block Design (RCBD), 5 treatments and 5 replications. As a block is the time analysis. As the treatment is different variations on the weight ratio of zeolite and RHCW (g/g). The treatment of its adsorbent was given separately and both of the treated with stirring. To test the difference between treatment means, the Honestly Significant Differences (HSD) was used with 5% level of significance. The results showed that the effectiveness of giving 8 grams of zeolite for 240 minutes is 68.78% (Cu) and 94.53%(Pb), respectively. While the effectiveness of giving 2 grams RHCW in the next 180 minutes is 70.75% (Cu) and 84.30% (Pb), respectively. The maximum adsorption capacity of giving 8 grams of zeolite within 240 minutes is Cu=0.327 mg/g (followed Freundlich isotherm model); Pb=0.754 mg/g (followed Langmuir isotherm model), respectively. While the absorption capacity of giving 2 grams RHCW in the next 180 minutes is: Cu=0.084 mg/g (followed Freundlich isotherm model); Pb=0.782 mg/g (followed Langmuir isotherm model), respectively.