Abstract
One method to reduce levels of heavy metals from the waters is adsorption method by utilizing organic waste such as jackfruit peels. This research aims to utilize jackfruit peels pectin (Artocarpus Heterophyllus) as Cu (II) metal adsorbent the first to extract with 5% citric acid solvent for 120 minutes and characterize pectin from jackfruit peels as well measure the optimum contact time required pectin to adsorb Cu (II) metal with variations in time for 1, 2, 3 hours. The results showed the characterization pectin from jackfruit peels obtained was a yield of 9.9%, ash content 4.04%, moisture content 8%, equivalent weight 641.026 mg, methoxyl content 6.82%, galacturonic acid 45.76%, and the optimum contact time required pectin to adsorb Cu (II) metal, which is 2 hours with the precentage of absorption is 82,80%.
Highlights
PENDAHULUAN Pencemaran lingkungan yang diakibatkan oleh logam berat dewasa ini semakin meningkat
This research aims to utilize jackfruit peels pectin (Artocarpus Heterophyllus) as Cu (II) metal adsorbent the first to extract with 5% citric acid solvent for 120 minutes and characterize pectin from jackfruit peels as well measure the optimum contact time required pectin to adsorb Cu (II) metal with variations in time for 1, 2, 3 hours
The results showed the characterization pectin from jackfruit peels obtained was a yield of 9.9%, ash content 4.04%, moisture content 8%, equivalent weight 641.026 mg, methoxyl content 6.82%, galacturonic acid 45.76%, and the optimum contact time required pectin to adsorb Cu (II) metal, which is 2 hours with the precentage of absorption is 82,80%
Summary
Sampel ditimbang sebanyak 20 gram, kemudian ditambahkan pelarut sesuai dengan perbandingan bahan dan pelarut, yaitu 1:50, dengan pelarut asam sitrat 5%. Pencucian pektin Tambahkan etanol 96% pada pektin yang telah diperoleh sambil diaduk dan dibiarkan sampai mengendap untuk kemudian disaring dengan menggunakan kertas saring. Pengeringan pektin Pektin basah hasil pengendapan dikeringkan dalam oven pada suhu 40oC selama 24 jam. Kadar abu Cawan porselin dikeringkan didalam tanur pada suhu 650oC kemudian didinginkan didalam desikator dan ditimbang sebagai bobot wadah. Sebanyak 0,5 gram sampel pektin dimasukkan dalam cawan porselin yang telah diketahui bobotnya kemudian dimasukkan dalam tanur dengan suhu 650oC selama 4 jam. Kemudian didinginkan dalam desikator dan ditimbang sampai diperoleh bobot tetap. Kadar Air Sebanyak 0,3 gram sampel pektin di keringkan didalam oven pada suhu 105oC selama 4 jam menggunakan cawan porselin yang telah diketahui bobot kosongnya. Selanjutnya di dinginkan dalam desikator dan ditimbang sampai diperoleh bobot yang tetap (Najeyah dkk., 2016). Kadar air dapat dihitung dengan menggunakan rumus sebagai berikut
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