REMOVAL OF AMMONIUM FROM AQUEOUS SOLUTION

... acetonitrile from aqueous solutions to circumvent possible future supply disruption from interfering with essential industrial and laboratory work The separation of acetonitrile from aqueous solutions using. .. significant role of functional groups in governing adsorption and could facilitate th[r]

other techniques for water re-use in terms of initial cost, simplicity of design, use of operation and insensitivity to toxic substances [8].The aim of this work was to study the adsorption of BB159 from aqueous solution onto banana peel as a l[r]

Sawdust, inexpensive material has been utilized as an absorbent for the removal of iron from aqueous solution for their safe disposal. The adsorption experiments of untreated sawdust (SD) and treated sawdust (SDC) have been carried out at room temperature using the batch test. The Langmuir and Freun[r]

reducing conditions. Arsenate species (pentavalent state)are stable in oxygenated waters. Under mildly reducingconditions, arsenites (trivalent state) predominate [1].Arsenic combines strongly with carbon in arsenicalorganic compounds which are used as pesticides, chemo-terapeutic agents and chemica[r]

VNU Journal of Science, Natural Sciences and Technology 24 (2008) 233-237 233 Reseach on the removal of hexavalent chromium from aqueous solution by iron nanoparticles Nguyen Thi Nhung*, Nguyen Thi Kim Thuong Institute of Geological Sciences, Vietname[r]

by the electroplating, leather tanning, metal finishing, steel fabrica-tion, textile industries and chromate preparation. The most commonoxidation states of Cr in nature are Cr(III) and Cr(VI). Chromium(VI)is more hazardous than Cr(III) as it can diffuse as CrO42−or HCrO4−through cell membrane[r]

The influence of the initial concentration on the PO] removal ~-OPh, ~ -TPPh, initial PO] concentration in aqueous solutions up to 50 mg/1, contact time 5 - 1 2 0 min, a dose of red mud [r]

2 - Time courses of pH ◇ in the solution, cadmium concentration ○, and calculated cadmium adsorbed on charcoal ▲ The charcoal prepared under 700ºC was used and the dosages of charcoal we[r]

The influence of the initial concentration on the PO] removal ~-OPh, ~ -TPPh, initial PO] concentration in aqueous solutions up to 50 mg/1, contact time 5 - 1 2 0 min, a dose of red mud [r]

[10] A.J. Varma, S.V. Deshpande, J.F. Kennedy, Carbohydr. Polym. 55 (2004) 77.[11] E. Guibal, Separat. Pur. Technol. 38 (2004) 43.[12] W. Li, L. Zhang, J. Peng, N. Li, S. Zhang, G. Shenghui, Ind. Crop Prod. 28 (2008) 294.[13] C. Huang, Y.C. Chung, M.R. Liou, J. Hazard. Mater. 45 (1996) 265.[14] Y.T.[r]

intake, chromium concentrations have reached toxic levels andmanifested in a variety of ailments such as dermatitis, conges-tion of respiratory tracts, and perforation of the nasal septum.It is also a proven mutagen which may lead to cancer (1).Chromium can exist in several vale[r]

contaminated water: a review, J. Hazard. Mater. 97, 219–243. Bal K. J., Hari B. K. C., Radha K., Ghale G. M., Bhuwon R.S., Madhusudan P.U.(2004) Descriptors for Sponge Gourd [Luffa cylindrica (L.) Roem. ], NARC, LIBIRD & IPGRI. Basil JL, Ev RR, Milcharek CD, Martins LC, Pavan FA, dos Santos,[r]

review. Mineral and Metallurgical Processing, Vol.12, No.4, (September 1995), pp. 189-196, ISSN 0747-9182. Naddafi, K.; Nabizadeh, R.; Saeedi, R.; Mahvi, A. H.; Vaezi, F.; Yahgmaeian, K.; Ghasri, A. & Nazmara, S. (2007). Biosorption of lead(II) and cadmium(II) by protonated Sargassum[r]

cabinet for different time durations and the results are shownin Fig. 8a. In addition, the effect of different UV-wavelengthon spectroscopic properties of ZnS nanoparticles was alsoinvestigated and the absorption spectra are depicted inFig. 8b. The results show that short wavelength (h[r]

New manufacturing techniques for ceramic processing have been carefully explored as means ofproducing powders with a variety of well-defined characteristics. The quality of the final productcan be significantly improved by the choice of an efficient production process. The control <[r]

Supporting InformationHighly Biocompatible Nanofibrous Microspheres Self-Assembled fromChitin in NaOH/Urea Aqueous Solution as Cell Carriers**Bo Duan, Xing Zheng, Zhixiong Xia, Xiaoli Fan, Lin Guo, Jianfeng Liu, Yanfeng Wang,Qifa Ye, and Lina Zhang*ange_201412129_sm_miscellaneous_infor[r]

trên bentonit là thu nhiệt và tự xảy ra (Ho = 27,60Kj/mol, Go &lt; 0). Quá trình hấp phụ Cu2+ tuân theo phương trình hấp phụ đẳng nhiệt Freundlich. ABSTRACT The influence of different factors such as shaking time, pH of aqueous solution, amount of adsorbent,[r]

(1985) concluded that direct compression, precompression, wet massing, fluidized-bed granulation and spray-drying techniques could all be used to prepare tablets for film coating, although the method of preparation could give rise to differences in biopharmaceutical characteristics. Simpkin e[r]

hydrothermal treatment time (3–24 h), accompanying the increase in their surface area. The separate evolution of H2and O2from water under solarlight irradiation was successfully achieved using the Vis-TiO2/Ti/Pt which is hydrothermally treated for 5 h, while the H2evolution ratio was15 mmol h[r]

conduction occurs. The lumen simultaneously functions as a continuous and extensive conductive and adsorptive structure. 4. Soil and trunk spray applications compared to tree injection Water soluble insecticides are differentially absorbed by tree roots comparative to insoluble chemistries such as t[r]