scholarly journals Corrosion Inhibitive Performance of the Waste Orange Peels (Citrus Sinensis) on A36 Mild Steel in 1M HCl

2022 ◽  
pp. ArticleID:22011
Author(s):  
Ayoola Ayodeji ◽  
Keyword(s):  
Mild Steel ◽  
Citrus Sinensis ◽  
Orange Peels

scholarly journals Adsorption of Chromium(VI) and Zinc(II) Ions on the Skin of Orange Peels (Citrus sinensis)

1970 ◽  
Vol 26 ◽  
pp. 31-39 ◽  
Author(s):  
O. A. Ekpete ◽  
F. Kpee ◽  
J. C. Amadi ◽  
R. B. Rotimi
Keyword(s):  
Heavy Metals ◽  
Metal Ions ◽  
Citrus Sinensis ◽  
Contact Time ◽  
Heavy Metal Ions ◽  
Orange Peel ◽  
Maximum Adsorption Capacity ◽  
Orange Peels ◽  
Chromium Vi ◽  
Aas Method

The removal of heavy metal ions Cr (VI) and Zn (II) from aqueous solution using theskin of orange peel (Citrus sinensis) as an adsorbent under different experimentalconditions was investigated in this study. The concentrations of the metal ions adsorbedwere determined by atomic absorption spectroscopic (AAS) method. The parametersinvestigated were temperature, contact time, adsorbent dosage, initial metal ionsconcentration and pH. It was observed that the white inner skin of orange removed more ofCr (VI) than Zn (II) metal ions in all the adsorption experiments. The optimum removal ofthe Cr (VI) and Zn (II) metal ions occurred at pH 3 and at temperature 30°C. Application ofthe Langmuir isotherm to the systems yielded maximum adsorption capacity of 8.068 (mg/g)and 1.078 (mg/g) for Cr (VI) and Zn (II) metal ions respectively.Keywords: Orange peel; Adsorption; Heavy metals; LangmuirDOI: 10.3126/jncs.v26i0.3628Journal of Nepal Chemical SocietyVol. 26, 2010Page:31-39

scholarly journals Potential of Sweet Orange Peels (Citrus sinensis) Essential Oil as Sunscreen

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Isriany Ismail ◽  
Fatma Dewi ◽  
Ferawati Ferawati ◽  
Nursalam Hamzah
Keyword(s):  
Essential Oil ◽  
Citrus Sinensis ◽  
Sweet Orange ◽  
Orange Peels

Telah dilakukan penelitian tentang uji efektifitas minyak atsiri kulit buah jeruk manis (Citrus sinensis) sebagai tabir surya secara spektrofotometer UV-VIS. Penelitian ini bertujuan untuk menentukan potensi dari minyak atsiri kulit jeruk manis sebagai tabir surya yang ditentukan dengan nilai SPF, transmisi eritema dan transmisi pigmentasi. Minyak atsiri jeruk diperoleh dengan mengekstraksi kulit buah jeruk manis dengan metode pengepresan/pemerasan. Pengujian dilakukan menggunakan metode spektrofotometri UV pada panjang gelombang 290 – 400 nm terhadap konsentrasi minyak atsiri 20, 40, 60, 80, 100, dan 120 bpj. Hasil analisis menunjukkan bahwa minyak atsiri kulit buah jeruk manis (Citrus sinensis) mengabsorbsi sinar UV B hingga UV A dengan nilai SPF 1,094 hingga 1,380. Persen eritema dan pigmentasi pada konsentrasi 120 bpj berturut-turut adalah 66,98% dan 65,54%.

scholarly journals Ekstraksi Pektin dari Limbah Kulit Jeruk (Citrus sinensis) dengan Metode Ekstraksi Gelombang Ultrasonik Menggunakan Pelarut Asam Klorida (HCl)

2019 ◽  
Vol 8 (2) ◽  
pp. 85-89
Author(s):  
Delvia Ariska Damanik ◽  
Setiaty Pandia
Keyword(s):  
Ultrasonic Wave ◽  
Cell Walls ◽  
Citrus Sinensis ◽  
Galacturonic Acid ◽  
Wave Speed ◽  
Ash Content ◽  
Plant Cell Walls ◽  
Effect Of Solvent ◽  
Orange Peels ◽  
Food And Beverage

Pectin is complex polysaccharide contained D-galacturonic acid bonded by α -1,4 glucosidic in plant cell walls. Pectin widely used in pharmaceutical, food and beverage industries. This study evaluates the effect of solvent and stirring speed on pectin characteristic. The study utilizes ultrasonic wave and acid solvent at the presence of ethanol to yield pectin following by drying to obtain dried pectin. This study carries out using 25 grams orange peels, 10 %, chloride acid solvent, 60 minutes extraction time, temperature of 60 oC, ultrasonic wave speed 50 KHz and 16 hours settling time at various solvent concentrations 0.025 N; 0.05 N; 0.075 N and stirring speed 0 rpm; 50 rpm; 100 rpm; 150 rpm. The results showed that the highest yield of pectin extraction was obtained at concentration of 0.075 N with 20.12 %; stirring speed 150 rpm, water content 8.0 %; 4,0 % ash content, and 7.44 % methoxyl content.

scholarly journals Characterisation of used cooking oil (UCO) and orange peels as the medium of insect repellent

2020 ◽  
Vol 3 (2) ◽  
pp. 66
Author(s):  
Miradatul Najwa Muhd Rodhi ◽  
Puteri Nur Syareena Saifuddin ◽  
Harumi Veny
Keyword(s):  
Citrus Sinensis ◽  
Value Added ◽  
Capric Acid ◽  
Chemical Compounds ◽  
Insect Repellent ◽  
Waste Oil ◽  
Cooking Oil ◽  
Orange Peels ◽  
Used Cooking Oil ◽  
A Value

Used cooking oil (UCO) is abundant waste oil in Malaysia, due to its daily use in frying food. The proper way to dispose UCO is yet to be found and creating awareness among Malaysians on disposing and recycling UCO required a long period of time. Therefore, alternative needs to be taken to solve this issue by transforming UCO into a value-added product such as insect repellent. Thus, the objective of this research is to investigate the presence of active functional chemical compounds in UCO and orange (Citrus sinensis) peels powder (limonene) that would help to transform UCO into a repellent. Based on GC-MS analysis, there was presence of fatty acids in UCO such as palmitic acid (C16:0), stearic acid (C18:0), oleic acid (C18:1), myristic acid (C14:0) and capric acid (C10:0). FTIR analysis has proven that orange (Citrus sinensis) peels powder contained limonene compound due to presence of alkene (C=C) group. The results of UCO and orange peels analysis, as well as comparison made with previous studies show that UCO and orange peels powder are potential to be the medium of insect repellent.

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