THE EFFECT OF PRE-TREATMENT OF ORANGE PEEL ON THE ADSORPTION PROCESS OF PHENOLIC COMPOUNDS IN WASTEWATER FROM THE FOOD INDUSTRY
The food industry produces many types of waste, one of which is liquid waste. Hazardous substances such as phenols and their derivatives are common in liquid waste. There is a simple and easy-to-use wastewater treatment method that adsorbs pericarp waste as an adsorbent. One of the fruit peel wastes...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/67678 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The food industry produces many types of waste, one of which is liquid waste. Hazardous substances such as phenols and their derivatives are common in liquid waste. There is a simple and easy-to-use wastewater treatment method that adsorbs pericarp waste as an adsorbent. One of the fruit peel wastes that can be used as a biosolvent is orange peel. This is obtained not only because of its high skin-to-fruit ratio and its properties suitable for use as a biosolvent, but also because of its high productivity in Indonesia. This study determines the effect of pretreatment to produce a bioadsorbent on the adsorption capacity of phenol, the effect of contact time during the adsorption process, and investigates the adsorption rate suitable to explain the adsorption process that occurs.
The research was conducted by batch adsorption method using a synthetic phenol adsorbate solution. In the first stage, the adsorption process with variations in contact time of 25, 55, 85, 115, and 145 minutes as well as the control variable at a temperature of 30°C, adsorbent dose of 3 grams, adsorbate concentration of 1000 ppm as much as 50 ml, and pH 3.22. The concentration of the phenol solution was analyzed using the Folin-Ciocalteu method. The next step is variations of the initial treatment in the manufacture of activated carbon of citrus fruit peels were carried out, namely chemically with H3PO4 activator, carbonization temperature and activation at 800oC were physically performed, and without pretreatment. Based on the ANOVA (Analysis of Variance) test, the results of this study show that the initial treatment and adsorption contact time in the production of orange peel biosorbent have a significant impact on adsorption capacity. The best adsorption contact time for CAC and PAC biosorbents occurred at 145 minutes, with CWOP at 115 minutes, and the adsorption efficiency of each adsorbent was 70.82%. 98.81%; and 61.24%. The best initial treatment for producing the orange peel biosorbent was physical (KAF) with a phenol adsorption efficiency of 97.67% and a standard deviation of 0.02. A suitable kinetic model for phenol adsorption using PAC biosorbent is pseudo-second-order with R2 0.999.
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