scholarly journals PENGGUNAAN KULIT UBI KAYU (Manihot utillisima Pohl) TERHADAP PENYERAPAN LOGAM Fe (III) PADA AIR PAYAU

KOVALEN ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 139-145
Author(s):  
Delta Rinanda Duda ◽  
Syaiful Bahri ◽  
Jaya Hardi ◽  
Nov Irmawati Inda

The absorption of Fe (III) metal in brackish water in the Balaroa Village, West Palu District using Cassava peels (Manihot utillisima Pohl) has been carried out. The aim of this study is determining the lifetime of cassava peels (Manihot utillisima Pohl) on the absorption of Fe (III) ions in brackish water. The research was conducted in a simple purification water system. Brackish water was flowed through the simple purification water system containing Cassava peels (Manihot utillisima Pohl) with a volume of brackish water is 10 liters per day (measured flow rate) and been analyzed every 2 days using UV-Vis spectrophotometry for less than 1 month. The results of the study show that cassava peel could be used as biosorbent to absorb and reduce level of Fe (III) ions in brackish water for 2.821 months. The concentration of Fe (III) ions in brackish water in Balaroa Village, West Palu District is 1.666 ppm. Keywords : Fe (III) Ion, Biosorbent, Cassava Peel

2021 ◽  
Vol 26 ◽  
pp. 29-34
Author(s):  
J. A. Agunbiade ◽  
O. A. Adeyemi ◽  
O. E. Fasina ◽  
B. O. Ashorobi ◽  
M. O. Adebanjo ◽  
...  

An experiment was conducted using 20 growing rabbits (5 – 6weeks in age) of mixed breeds and sexes with initial weight of 500 – 650g to evaluate the effect of replacing maize as a source of energy with cassava peel meal (CPM) and cassava leaf meal (CLM) in their diets. The rabbits were randomly allotted to five isonitrogenous and isoenergetic diets. Each dietary treatment was replicated 4-time with individually caged rabbits. The experiment lasted 56days. Dietary treatment did not have effect (P > 0.05) on average daily weight gain, water consumption, feed intake and feed efficiency and carcass charactaristics. The utilization of CPM and CLM fortified with palm-oil sludge with or without amino acid supplementation greatly reduced the cost of producing a unit weight of rabbit (P < 0.001). It was concluded that combination of CPM and CLM can serve as a replacement for maize in rabbit diets without any adverse effect on growth performance and carcass characteristics


2018 ◽  
Vol 11 (3) ◽  
pp. 124
Author(s):  
Shella Permatasari Santoso ◽  
Niko Sanjaya ◽  
Aning Ayucitra

The use of cassava peels as raw material for Sodium Carboxymethyl Cellulose productionCassava peels are abundantly available and may be used as an lowcost cellulose source (80-85% cellulose per weight cassava peel). the study was to evaluate the effect of the concentration of sodium hydroxide, sodium chloroacetate, and temperature reaction on the sodium carboxymethyl cellulose (sodium-CMC) characteristics i.e. yield, purity, and degree of substitution in sodium-CMC preparation.  Sodium-CMC functional group was determined using FTIR spectrophotometer. Cassava peels was dried and grounded to 50 mesh. Lignin was eliminated from cassava peel by extraction of grounded cassava peel with 10% NaOH at 35 °C for 5 h. Cassava peel free lignin was then re-extracted using 10% of acetic acid and sodium chloride at 75 °C for 1 h, thus cellulose free hemicellulose was obtained. Alkalization at 30 °C for 90 min was performed by adding sodium hydroxyde at 10-40% to cellulose using isopropyl alcohol solvent. Following this, etherification was conducted by adding sodium chloroacetate of 1-5 g at 50-80 °C for 6 h. As result, the highest purity of sodium-CMC (96.20%) was obtained from alkalization using 20% of sodium hydroxide and etherification using 3 g sodium chloroacetate at 70 °C. Sodium-CMC yield was 22% and degree of substitution 0.705.Keywords: cassava peel, carboxymethyl cellulose, sodium-CMC, etherification AbstrakKulit singkong merupakan sumber selulosa yang berlimpah dan murah, dengan kadar selulosa 80-85% dari berat kulit singkong. Tujuan penelitian ini adalah memanfaatkan selulosa dalam kulit singkong sebagai bahan baku pembuatan natrium karboksimetil selulosa (Na-CMC), mempelajari pengaruh natrium hidroksida, natrium kloroasetat serta suhu pada karakteristik Na-CMC seperti perolehan, kemurnian, dan derajat substitusi, serta menentukan kondisi operasi optimum untuk pembuatan Na-CMC berdasarkan kemurnian Na-CMC terbesar. Gugus fungsi Na-CMC ditentukan menggunakan Fourier Transform Infrared Spectra. Mula-mula, kulit singkong dikeringkan dan dihancurkan sehingga berukuran 50 mesh. Kulit singkong diekstraksi dengan NaOH 10% di suhu 35 °C selama 5 jam, untuk melarutkan lignin. Kulit singkong bebas lignin diekstrak dengan asam asetat 10% dan natrium klorida dengan pemanasan 750 °C selama 1 jam untuk melarutkan hemiselulosa sehingga didapatkan selulosa. Alkalisasi dilakukan dengan mereaksikan selulosa dengan NaOH 10-40% dengan pelarut isopropil alkohol pada suhu 30 °C selama 90 menit, dilanjutkan eterifikasi dengan natrium kloroasetat 1-5 g pada suhu 50-80 °C selama 6 jam. Berdasarkan hasil penelitian, karakteristik Na-CMC terbaik didapatkan dari alkalisasi selulosa menggunakan NaOH 20% serta eterifikasi menggunakan 3 g natrium kloroasetat pada suhu 70 °C. Perolehan Na-CMC yang didapat adalah sebesar 22%, kemurnian 96,20%, derajat substitusi 0,705; termasuk dalam grade kedua menurut SNI 06-3736-1995.Kata kunci: kulit singkong, karboksimetil selulosa, Na-CMC, eterifikasi


Author(s):  
Darmawati Darmawati ◽  
Syarifah Maulidar ◽  
Khairun Nisa

The study aims to find out about the possibility of utilizing cassava peel waste as raw material for making activated carbon to reduce levels of Manganese in water. This study also wants to see the effect of variations in the concentration of activated carbon from cassava peels on decreasing levels of Manganese in water. This research was conducted at the Laboratory of the Akademi Analis Kesehatan Pemerintah Aceh and at the UPTD Laboratorium Kesehatan Banda Aceh on 3-11 March 2016. Manganese was analysed using the persulfate method while the Manganese was examinated by the spectrophotometric method. The sample used is an artificial sample by adding MnSO4 to water. The variation of activated carbon concentration added is 2 gr, 3 gr, and 4 gr. The results are that with the addition of 2 grams of activated carbon the percentage of Manganese reduction was 70.37%, the addition of 3 grams of activated carbon decreased Manganese concentration by 86.59%, while the addition of 4 grams of activated carbon reduced the percentage of Manganese to 92.33%. It can be concluded that the higher the concentration of activated carbon added, the higher the decrease in levels of Manganese in the water.


2014 ◽  
Vol 4 (1) ◽  
pp. 168
Author(s):  
Christopher Adams Eneji ◽  
Godfrey Adokiye Kalio ◽  
Oluwatosin Kennedy-Oko

<p>To investigate the effects of cassava peel-based diets on the meat composition of WAD goats, 24 five month-old goats were used for the experiment. Results show that the Dry Matter (DM), Crude Protein (CP) and Nitrogen Free Extract (NFE) content of the meat were not significantly (P&gt;0.05) different. The DM, CP and NFE content ranged from 29.96-30.00%, 89.77-90.43% and 2.00-4.03% respectively. The mineral composition revealed no significant (P&gt;0.05) differences in Iron (Fe), Calcium (Ca), Sodium (Na), Zinc (Zn), Magnesium (Mg), Potassium (K), Phosphorus (P) and Copper (Cu) content. The Fe, Ca, Na, Zn, Mg, K, P and Cu content ranged from 1.95-2.20mg, 23.65 -25.29mg, 72.86-77.05mg, 4.00-4.32mg, 55.65-57.83mg and 1.62-1.73mg respectively. From the results, it appears that cassava peels supplemented with sweet potato foliage could improve the meat composition of WAD goats.</p>


2017 ◽  
Vol 43 (5) ◽  
pp. 981-992
Author(s):  
Xiaowei Zhou ◽  
Chunming Xia ◽  
Gandy Stephen ◽  
Faisel Khan ◽  
George A. Corner ◽  
...  

2016 ◽  
Vol 138 (11) ◽  
Author(s):  
Hasan B. Al Ba'ba'a ◽  
Tarek Elgammal ◽  
Ryoichi S. Amano

Prediction correlations of air bubble diameter and frequency in stagnant clean water were established. Eleven different orifice diameters were tested under flow rate of 0.05–0.15 SLPM. The resulted bubble size and frequency were traced using high-speed camera. It was found that the mean Sauter diameter and bubble frequency are in the range of 3.7–6.9 mm and 6.4–47.2 bubbles per second, respectively. Nonlinear regression was performed to design the new correlations of estimating diameter and frequency with a correlation factor of 0.93 and 0.94, respectively. Flow rate and orifice size had the highest impact on the studied parameters.


2014 ◽  
Vol 974 ◽  
pp. 384-388 ◽  
Author(s):  
Zawawi Daud ◽  
Halizah Awang ◽  
Angzzas Sari Mohd Kassim ◽  
Mohd Zainuri Mohd Hatta ◽  
Ashuvila Mohd Aripin

Proper waste management in Malaysia is needed for the organic wastes such as pineapple leaf and cassava peel where affects the increase the amount of solid waste dump into landfill. Thus, to overcome this problem agro waste material can be constructed in many production industries to commercialize the use of alternative fibre for the paper industry. The main objective of this study is to demonstrate the use of fibrous in pineapple leaf and cassava peel by production of alternative fibre based on chemical properties and surface morphology characteristic. This study conducted for the chemical composition by analysed by TAPPI Test method, Chlorination method and Kuchner-Hoffner method. Every chemical components analyse; Cellulose (Kuchner-Hoofner), Holocellulose (Chlorination method), Hemicellulose (Chlorination method), Hemicellulose, Ash content (T211-om-93), Lignin content (T222-om-98) and Sodium Hydroxide soluble (T203-om-88). The scanning electron microscopy (SEM) was used to observe and determine the morphological characteristic of both crops. The result indicates that pineapple leaf more suitable for becoming an alternative fibre than cassava peels. Pineapple leaves have a high Holocellulose content (85.7%), cassava peels 66%, followed by Cellulose pineapple leaf (66.2%), cassava peels (37.9%). However, hemicellulose content in pineapple leaf (19.5%) less than cassava peels (37.0%). Lignin content of pineapple leaf is lower (4.2%) compared to cassava peels (7.52%) in this study. From SEM images, cassava peel contained abundance fibre such as hemicellulose and cellulose that is held by the lignin in it and Pineapple leaves give a condensed composition of fibre structure. The chemical compositions and morphology study of pineapple leaf and cassava indicate pineapple leaf have a high percentage to be used as an alternative pulp in paper making industry, promoting the green technology. However, cassava peels make some of properties that can also be through for the paper industry.


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