Jan 10, 2013 Artikel Jurnal Efektivitas Penggunaan Asam Sitrat Dalam Pembuatan Gelatin.pdf ini ditulis oleh fauzan muhammad pada hari Thursday, January 10, 2013. Terimakasih atas kunjungan Anda pada blog ini. Terimakasih atas kunjungan Anda pada blog ini. This research aimed to analyze the characteristic of particleboard from characteristics of dregs sago and citric acid adhesive based on board density.
Logam berat kadmium yang terdapat dalam air limbah sangat berbahaya bagi makhluk hidup sehingga ion logam kadmium tersebut perlu dihilangkan dari lingkungan. Penghilangan ion logam kadmium dengan metode adsorpsi menggunakan biosorben kulit asam jawa telah dilakukan dalam penelitian ini.
Pengaktifan biosorben dilakukan dengan menggunakan dua aktivator sekaligus yaitu asam sitrat dan asam tartarat. Penelitian ini dilakukan untuk menentukan kondisi yang terbaik dalam proses pengaktifan biosorben dan proses penyerapan ion logam kadmium (II) dan untuk mengetahui pengaruh waktu kontak, rasio campuran asam sitrat dan asam tartarat dan konsentrasi awal ion logam kadmium (II) terhadap kapasitas penyerapan ion logam kadmium oleh biosorben. Untuk mengetahui kapasitas penyerapan kulit asam jawa yang telah diaktivasi terhadap ion logam berat dilakukan menggunakan peralatan atomic absorption spectrofotometer (AAS), untuk melihat gugus fungsi yang pada biosorben digunakan FTIR dan untuk melihat morfologi biosorben dilakukan dengan alat SEM. Hasil penelitian menunjukkan bahwa rasio campuran asam sitrat dan asam tartarat sebesar 3:1 menghasilkan biosorben terbaik untuk proses penyerapan ion logam Cd(II). Kapasitas penyerapan yang paling optimum diperoleh pada kondisi proses adsorpsi menggunakan konsentrasi awal ion logam Cd(II) 270 mg/L dan waktu kontak 110 menit dengan kapasitas penyerapannya 23,496 mg/g.
Ahalya, N., Kanamadi, R.D., Ramachandra, T.V. (2008) Biosorption of chromium (VI) by Tamarindus Indica pod shells, Journal of Environmental Science Research International, 1(2), 77-81. Awwad, A.M., Salem, N. (2014) kinetics and thermodynamics of Cd(II) biosorption onto loquat (Eriobotrya Japonica) leaves, Journal of Saudi Chemical Society, 18, 486-493. Ding, Y., Jing, D., Gong, H., Zho, L. (2012) Biosorption of aquatic cadmium(II) by unmodified rice straw, Bioresource Technology, 114, 20-25. El-Hassouni, H., Abdellaoui, D., El-Hani, S., Bengueddour, R.
(2014) biosorption of cadmium (II) and copper (II) from aqueous solution using red alga (osmundea pinnatifida) biomass, J. Sci., 5 (4), 967-974.
Grassi, M., Kaykioglu, G., Belgiorno, V. Dan Lofrano, G. (2012) Removal of emerging contaminants from water and wastewater by adsorption process.
In Emerging compounds removal from wastewater, G. Lofrano (ed.), Springer Science. Hossain, A., Bhattacharyya, S.R., Aditya, G. (2015) biosorption of cadmium from aqueous solution by shell dust of the freshwater snail lymnaea luteola, Environmental Technology & Innovation, 4, 82-91.
Kanti, T., Mohammod, M., Maitra, S. Dan Dutta, K.B.
(2012) removal of cadmium from aqueous solution using castor seed hull: a kinetic and equilibrium study, Clean Soil Air Water, 38, 850–858. Mahmoud, M.A., El-Halwany, M.M., (2014) Adsorption of cadmium onto orange peels: isotherms, kinetics, and thermodynamics. J Chromatogr SepTech, 5: 238. McSweeny, J.D., Rowell, R.M. Dan Min, S.H. (2006) Effect of citric acid modification of aspen wood on sorption of copper ion, Journal of Natural Fiber, 3(1):43-58.
Muhammad, Choong, T.S.Y., Chuah, T.G., Yunus, R., Suaraya, A.R. (2010) sorption kinetics for the removal of cadmium and zinc onto palm kernel shell based activated carbon, Jurnal Rekayasa Kimia dan Lingkungan, 7, 4, 149-155. Pandharipande, R. (2013) Tamarind fruit shell adsorbent synthesis, characte-rization and adsorption studies for removal of Cr(VI) and Ni (II) ions from aqueous solution. International Journal of Engineering and Emerging Technologies, 4, 83-89.
Popuri, S.R., Jammala, A., Reddy, K.V.N.S. Dan Abburi, K. (2007) Biosorption of hexavalent chromium using tamarind (Tamarindus Indica) fruit shell-a comparative study, Elect. Biotech., 10, 3.
Saikaew, W., Kaewsarn, P., Saikaew, W. (2009) pomelo peel: agricultural waste for biosorption of cadmium ions from aqueous solutions, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering, 3(8), 393-397. Semerjian, L.
(2010) Equilibrium and kinetics of cadmium adsorption from aqueous solutions using untreated pinus halepensis sawdust, Journal of Hazardous Materials, 173, 236-242. Sharma, P., Kaur, H., Sharma, M. Dan Sahore, V. (2011) A review on applicability of naturally available adsorbents for the removal of hazardous dyes from aqueous waste, Environ Monit Assess 183,151–195. Sivasankar, V., Ramachandramoorthy, T., dan Chandramohan, A.
(2010) Fluoride removal from water using activated and MnO2-coated tamarind fruit (tamarindus indica) shell: batch and column studies. Journal of Hazardous Materials, 177, 719-729. (2012) Fixed bed column adsorption studies for removal metals ions using tamarind seeds, Coromandal Journal of Science, 1(1), 65-71. WHO/UNEP (World Health Organization /United Nations Environment Programme (1995) Health risks from marine pollution in the Mediterranean. Evaluation of health risks from chemically contaminated seafood.
Document EUR/ICP/EHAZ94 01/MT01 (2), World Health Organization Regional Office for Europe, Copenhagen. Zheng, L., Dang, Z., Yi, X. Dan Zhang, H.
(2010) equilibrium and kinetic studies of adsorption of Cd(II) from aqueous solution using modified corn stalk, Journal of Hazardous Materials, 176, 650-656. Yuan, F., Hui, W., Jian, W., Ma, W. (2010) adsorption of cadmium (II) ions from aqueous solution by a new low-cost adsorbent—bamboo charcoal, Journal of Hazardous Materials, 177, 300-306.
This study aimed to determine the concentration of citric acid and sugar to produce jellytamarillo with the best characteristics. Experimental design used was Randomized Block Designfactorial with factors I is the concentration of citric acid that consists of four levels; 1. 0% (w/v)concentration of citric acid from volume of friut juice, 2. 2% (w/v) concentration of citric acid fromvolume of fruit juce, 3.
4% (w/v) concentration of citric acid from volume of fruit juice, 4. 6%citric acid (w/v) concentration of citric acid from volume of fruit juice and the second factor is theconcentration of sugar that consists of three levels such as: 1. The sugar concentration of 45 g in 45ml of fruit juice, 2. 55 g in 45 ml of fruit juice, 3. 65 g in 45 ml of fruit juice.
The treatment wasrepeated 2 times to obtained 24 units of the experiment and the data were analyzed by analysis ofvariance. If there is any effect of the treatment, the analysis followed by Duncans Multiple RangeTest. The results showed that the treatment of the interaction between citric acid and sugar very realeffect on the moisture content, anthocyanin content, total sugars, and total dissolved solids, whilethe treatment of acid concentration was highly significant to the degree of acidity (pH) and citricacid and sugar treatment had no effect significant effect on the color, texture, aroma, flavor, overallacceptance.
Treatment concentration of citric acid 2% of the volume of fruit juice and sugar 65 g in45 ml of fruit juice produces jelly with the best characteristics with the criteria: water content of65.60% w / w, 0.42 mg/100g anthocyanin content, total sugar 31.31%, 2.75 pH, total dissolvedsolids 17.10 oBrix, color rather like, chewy texture, aroma rather like, flavor rather like and overallacceptance rather like.