i

NISBAH BOBOT CAMPURAN KULIT JERUK (CITRUS SP.) DAN ARANG

TONGKOL JAGUNG(ZEA MAYS L.) SEBAGAI ADSORBEN DALAM

PENGOLAHAN AIR LIMBAH TEKSTIL

Weight Ratio of Orange (Citrus sp.) Peel and Corncob (Zea Mays L.) Charcoal As

Adsorbent in the Textile Wastewater Treatment

Oleh,

Angga Dwika Kumala Putra

NIM: 652010012

TUGAS AKHIR

Diajukan kepada Program Studi Kimia, Fakultas Sains dan Matematika

guna memenuhi sebagian dari persyaratan untuk mencapai gelar Sarjana Sains

Program Studi Kimia

Fakultas Sains dan Matematika

Universitas Kristen Satya Wacana

Salatiga

2014

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NISBAH BOBOT CAMPURAN KULIT JERUK (Citrus sp.) DAN ARANG

TONGKOL JAGUNG (Zea Mays L.) SEBAGAI ADSORBEN DALAM

PENGOLAHAN AIR LIMBAH TEKSTIL

Weight Ratio of Orange Peel (Citrus sp.) and Corn Cob Charcoal (Zea mays L.) as

Adsorbent in the Textile Wastewater

Angga Dwika Kumala Putra*, A. Ign. Kristijanto

**, dan Sri Hartini

**

*Mahasiswa Program Studi Kimia Fakultas Sains dan Matematika

**Dosen Program Studi Kimia Fakultas Sains dan Matematika

Universitas Kristen Satya Wacana, Salatiga

Jln. Diponegoro no 52-60 Salatiga 50711 Jawa Tengah – Indonesia

652010012@student.uksw.edu

ABSTRACT

The objective of this study were: Firstly, to determine the weight ratio of orange peel

and corncob charcoal in the adsorption of physico-chemical parameters of liquid waste textile

industry as revealed by the quality standards (Perda Jateng No. 10 / 2004). Secondly, to

determine the effectiveness of the weight ratio of orange peel and corncob charcoal in

decreasing of physico-chemical parameters textile liquid waste. Thirdly, to determine the model

of adsorption isotherm of weight ratio of orange peel and corncob charcoal.

Data were analyzed by Randomized Completely Block Design (RCBD), 3 treatments

and 9 replications, as the block was the time analysis. As the treatments were various weight

ratio adsorbent (gram/gram), which are 2,5: 2,5; 3,5: 1,5; and 4,5: 0,5, respectively. To test the

differences between treatments means, the Honestly Significant of Differences (HSD) was used

at 5% level of significant.

The results of the study showed that the addition of 2,5 grams orange peel can decrease

the standard quality parameters (e.g. COD and pH) and heavy metals (e.g. iron (Fe), lead (Pb),

zinc (Zn)), while the addition of 3,5 grams of orange peel is able to decrease TSS and BOD in

period of contact time 360 minutes. Furthermore, the addition of 2,5 grams of corncob charcoal

able to decrease the standard quality parameters COD although it is not meet quality

standards, 1,5 grams of corncoab charcoal optinum to decrease TSS, iron (Fe), zinc (Zn), and

pH, while 0,5 grams optimum to decrease BOD in period of contact time 360 minutes. The

effectiveness of textile industry wastewater treatments using orange peel can decrease the

standard quality parameters (TSS, COD, BOD, and pH) and heavy metals (iron (Fe), lead (Pb),

and zinc (Zn) ranged between 17,23% - 69,06%, while the use of corn cob charcoal ranged

from 0,45% - 94,33%. Model of adsorption isotherm parameters of TSS, BOD, COD, pH, iron

(Fe), and lead (Pb) using orange peel followed Langmuir isotherm model, while zinc (Zn)

follows the Freundlich isotherm model. Maximum adsorption capacity using orange peel

ranging from 0,01 mg / g – 14,08 mg / g. Furthermore, the adsorption isotherm models TSS,

BOD, COD, pH, zinc (Zn), iron (Fe), and lead (Pb) by using corn cob charcoal followed

Langmuir isotherm with maximum adsorption capacity ranged from 4.24 mg / g - 10.75 mg / g.

Keywords : Orange peel, Corncob charcoal, Adsorption isoterm