scholarly journals Synthesis of Zeolite from Bagasse and Rice Husk Ashes as Surfactant Builder on Detergency Process: Variation of NaOH Concentration for Silica Isolation

2018 ◽  
Vol 21 (3) ◽  
pp. 139-143
Author(s):  
Arnelli Arnelli ◽  
Bara Yunianto Fathoni ◽  
Teguh Iman Prastyo ◽  
Ahmad Suseno ◽  
Yayuk Astuti
Keyword(s):  
Cation Exchange ◽  
Sodium Silicate ◽  
Rice Husk ◽  
Cation Exchange Capacity ◽  
Rice Husk Ash ◽  
Sol Gel ◽  
Hydrothermal Process ◽  
Sodium Aluminate ◽  
Exchange Capacity ◽  
Mineral Type

Zeolite was successfully synthesised from ash bagasse and from rice husk ash as source of silica and applied to surfactant builder. The removal of silica from bagasse ash and from rice husk ash was influenced by NaOH concentration to obtain sodium silicate. This research aimed to synthesize zeolite, determine the optimum concentration of NaOH to synthetic zeolite, identify the zeolite mineral type, morphology, determine cation exchange rate and detergency by using synthesized zeolite as builder. Synthesis of zeolite was undertaken by sol-gel method followed by hydrothermal process. The stages of this study included the production of bagasse and rice husk ashes, isolation of silicate using a variation of NaOH concentration of 1.67, 3.33, 5.00, 6.67 and 8.30 M in the form of sodium silicate. Synthesis of zeolite was carried out by reacting sodium silicate and sodium aluminate using hydrothermal method. The synthesized zeolites were characterized using XRD and SEM. The results of this research indicated the types of zeolite minerals formed, namely, zeolite A, Na-A, Na-Y and sodalite. The morphology of the synthesized zeolites from both samples was quite homogeneous, NaOH concentration used to produce zeolite from bagasse ash was 1.67 M with value of cation exchange capacity (CEC) and detergency were respectively 121.14 mek/100 gram and 92.09% while synthesis zeolite from rice husk ash was generated using 8.3 M NaOH concentration with value of cation exchange capacity (CEC) and detergency were 65,71 mek / 100 gram and 94,313%, respectively.

scholarly journals Adsorpsi Pb2+ dan Cu2+ Menggunakan Kitosan-Silika dari Abu Sekam Padi

2013 ◽  
Vol 3 (2) ◽  
Author(s):  
Ani Mulyasuryani ◽  
Barlah Rumhayati ◽  
Chandrawati Cahyani ◽  
Soebiantoro Soebiantoro
Keyword(s):  
Cation Exchange ◽  
Rice Husk ◽  
Cation Exchange Capacity ◽  
Rice Husk Ash ◽  
High Capacity ◽  
Exchange Capacity

Abstrak Silika dari abu sekam padi yang dimodifikasi dengan kitosan menghasilkan suatu adsorben yang dapat meningkatkan daya adsorpsi terhadap ion logam. Adsorben kitisan – silika dari abu sekam padi dibuat dengan komposisi 100, 95, 85, 75 dan 65 %  silika dalam kitosan. Hasil penelitian menunjukkan bahwa peningkatan jumlah kitosan dapat meningkatkan nilai kapasitas tukar kation (KTK) adsorben. Adsorben terbaik dihasilkan pada % silika 65% dengan KTK 0,45 mekiv H+/g adsorben. Adsorbent tersebut mempunyai daya adsorpsi terhadap Pb2+ sebesar 11,8 mg/g adsorben dan 0,3 mg/g adsorben terhadap Cu2+.   Kata kunci : adsorpsi, abu sekam padi, kapasitas tukar kation, kitosan   Abstract Modification of silica from rice husk ash with chitosan resulted a high capacity adsorbant. The composition of silica from rice husk ash in adsorbent are 100, 95, 85, 75, and 65% in chitosan. The result of researsh show that the chitosan increasing cation exchange capasity (CEC) of adsorbent. The best adsorbent is 65% silica with CEC 0,45 mekiv H+/g adsorbent. The adsorbent has ability to adsorb Pb2+ is 11,8 mg/g adsorben and 0,3 mg/g adsorben to Cu2+.   Keywords : adsorption, rice ash husk, cation exchange capacity, chitosan

Synthesis of Faujasite and Analcime Using of Rice Husk Ash and Metakaolin

2013 ◽  
Vol 770 ◽  
pp. 209-212 ◽  
Author(s):  
Naruemon Setthaya ◽  
Chitsophin Pindi ◽  
Prinya Chindaprasirt ◽  
Kedsarin Pimraksa
Keyword(s):  
Specific Surface ◽  
Cation Exchange ◽  
Surface Area ◽  
Specific Surface Area ◽  
Rice Husk ◽  
Cation Exchange Capacity ◽  
Rice Husk Ash ◽  
Raw Materials ◽  
Exchange Capacity ◽  
Molar Ratio

Faujasite and analcime were synthesized by two-step process via hydrothermal method using the rice husk ash and metakaolin as starting materials. In the first step, the raw materials were prepared using the SiO2/Al2O3molar ratio of 4 and pretreatment with NaOH solution under various stirring conditions. The suspension was subjected to hydrothermal treatment at various reacting time and temperature in second step. The mineralogy, morphology, specific surface area and cation exchange capacity of the synthesized products were investigated using X-ray diffraction, Scanning electron microscopy, N2adsorption and desorption isotherm and ammonium acetate method, respectively. Faujasite was obtained using low temperature and short-time synthesis, while the analcime was obtained at high temperature and long-time synthesis. The stirring time did not affect zeolite types but the specific surface area. The cation exchange capacity of the synthetic faujasite and analcime were 263-280 and 280-302 meq/100 g, respectively.

scholarly journals An In Vitro Evaluation of the Capacity of Local Tanzanian Crude Clay and Ash-Based Materials in Binding Aflatoxins in Solution

Toxins ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 510 ◽  
Author(s):  
Emmanuel Ayo ◽  
Athanasia Matemu ◽  
Germana Laswai ◽  
Martin Kimanya
Keyword(s):  
Cation Exchange ◽  
Adsorption Capacity ◽  
Cation Exchange Capacity ◽  
Volcanic Ash ◽  
Rice Husk Ash ◽  
Binding Capacity ◽  
Exchange Capacity ◽  
In Vitro Technique ◽  
Great Health

Aflatoxins in feeds cause great health hazards to animals, and thus eventually to humans as well. The potential of clays from Arusha (AC), Kilimanjaro (KC), the Coast (CC), and Morogoro (MC), as well as volcanic ash (VA) and rice husk ash (RA), were evaluated for their capacity to adsorb aflatoxins B1 (AFB1), B2 (AFB2), G1 (AFG1), and G2 (AFG2) relative to a commercial binder Mycobind® (R) using in vitro technique. On average, CC, VA, KC, MC, AC, RA, and R adsorbed 39.9%, 51.3%, 61.5%, 62.0%, 72.6%, 84.7%, and 98.1% of the total aflatoxins from solution, respectively. The capacity of AC and RA was statistically (p < 0.05) better in binding aflatoxins next to R. The adsorption capacity seemed to follow the trend of the cation exchange capacity (CEC) of these materials. The CEC (meq/100 g) of CC, MC, KC, VA, AC, RA, and R were 7.0, 15.4, 18.8, 25.4, 27.2, 27.2, and 38.9, respectively. On average 96.3%, 42.7%, 80.8%, and 32.1% of AFB1, AFB2, AFG1, and AFG2 were adsorbed, respectively. The binding capacity of the clays and ashes relative to Mycobind® was about 100% for AC and RA, 50% for KC, MC, and VA, and 33.3% for CC. The AC and RA seem to be promising resources in binding aflatoxins in solution.

Effect of Rice Husk Ash Based Silicon Dioxide on the Properties of SUZ-4 Zeolite

2017 ◽  
Vol 729 ◽  
pp. 24-29
Author(s):  
Thitipob Sirisoontornpanit ◽  
Atichat Wongkoblab ◽  
Supunnee Junpirom
Keyword(s):  
Silicon Dioxide ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Sol Gel ◽  
Hydrothermal Process ◽  
Temperature Programmed Desorption ◽  
Acid Sites ◽  
Weak Acid ◽  
Molar Ratio ◽  
Temperature Programmed

SUZ-4 zeolite was synthesized by the sol-gel technique, followed by hydrothermal process. The effect of the molar ratio of rice husk ash based silicon dioxide to silica solution was investigated. The synthesized zeolite was characterized by XRD, SEM, N2 adsorption and temperature programmed desorption. The results show that the SUZ-4 zeolite was formed for all investigated conditions. However, the formation of MER zeolite occurred as an impurity for the content of rice husk ash higher than 75%. A needle shape crystal with mainly microporous structure is the feature of synthesized SUZ-4 zeolite. The result of temperature programmed desorption indicated that the chemical surface property of obtained SUZ-4 zeolite was weak acid sites.

scholarly journals A STUDY ON SYNTHESIS OF MCM-41 MESOPOROUS MATERIAL WITH SOURCE OF SODIUM SILICATE SOLUTION FROM RICE HUSK ASH

2017 ◽  
Vol 126 (1C) ◽  
pp. 37
Author(s):  
Hoàng Văn Đức
Keyword(s):  
Sodium Silicate ◽  
Rice Husk ◽  
Mesoporous Material ◽  
Rice Husk Ash ◽  
Hydrothermal Process ◽  
Sodium Silicate Solution ◽  
Silicate Solution ◽  
Molar Ratio ◽  
Ctab Concentration ◽  
Mcm 41

<p>In the present paper, a synthesis of MCM-41 mesoporous material with the sodium silicate solution prepared from the rice husk ash as a silica source by the hydrothermal process was demonstrated. The influence of synthesized conditions such as CTAB concentration, SiO<sub>2</sub>/CTAB molar ratio, stirring time and hydrothermal time were investigated. The samples were characterized by XRD, FT–IR and N<sub>2</sub> adsorption–desorption measurement. The obtained results showed that the samples possessed highly ordered hexagonal mesostructure with uniform mesopore size distribution in a large range of CTAB concentration (1,98-4,81% mass) and the SiO<sub>2</sub>/CTAB molar ratio (4-15). The sample had a high surface area (1071 m<sup>2</sup>/g) and large pore diameter (33,5 Å) with the molar ratio of CTAB: SiO<sub>2</sub>: H<sub>2</sub>O = 1: 6: 1000.</p><p>Keywords: MCM-41, sodium silicate solution, rice husk ash</p>

scholarly journals Sintesis dan karakterisasi magnetit terlapis dimerkaptosilika

2019 ◽  
Vol 4 (2) ◽  
pp. 81-88
Author(s):  
Abdurrazaq Habib ◽  
Ngatijo ◽  
Diah Riski Gusti
Keyword(s):  
Sodium Silicate ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Sol Gel ◽  
Silica Coating ◽  
Oh Groups ◽  
Gel Method ◽  
Ftir Characterization ◽  
Wave Numbers ◽  
Mercapto Groups

Synthesis of dimerkaptosilica coated magnetite was carried out in several stages, namely synthesis of magnetite from FeCl3.6H2O and FeSO4.7H2O by coprecipitation method. Extraction of sodium silicate from rice husk ash as a source of silica. Coating magnetite by dimerkaptosilica using 2,3-dimercapto-1-propanol as a source of mercapto groups and sodium silicate as sources of silica. Coating is done by the sol-gel method. FTIR characterization showed the appearance of uptake at wave numbers 894,04 cm-1, 2951,22 cm-1 and 3655,26 cm-1 from several absorbances which also appeared in magnetite material spectra indicating ―SH, ―CH2 and ―OH groups. XRD characterization was characterized by the appearance of a peak at 2θ, which was 35,43° and SEM characterization showed that the material Fe3O4―DMS had a morphological shape in the form of round clumps forming gray-colored aggregates.

scholarly journals Physicochemical Characterization of Biomass Residue–Derived Biochars in Vietnam

2018 ◽  
Author(s):  
Nguyen Van Hien ◽  
Eugenia Valsami-Jones ◽  
Nguyen Cong Vinh ◽  
Tong Thi Phu ◽  
Nguyen Thi Thanh Tam ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Rice Husk ◽  
Cation Exchange Capacity ◽  
Physicochemical Characterization ◽  
Chemical Properties ◽  
Exchange Capacity ◽  
Bet Surface Area ◽  
Sem Images ◽  
Surface Areas ◽  
Physico Chemical

This study compares the physico-chemical characteristics of three different types of biochar produced from biomass residues in Vietnam as a basis for optimising their application in water purification and soil fertilisation. &nbsp;Wood biochar (WBC), rice husk biochar (RBC), and bamboo biochar (BBC) were produced under limited oxygen conditions using equipment available locally in Vietnam, known as a Top-Lid Updraft Drum (TLUD). The resulting biochars were characterised using a suite of state-of-the-art methods to understand their morphology, surface chemistry and cation exchange capacity.&nbsp; Surface areas (measured by BET) for WBC and BBC were 479.34 m2/g and 434.53 m2/g, respectively, significantly higher than that of RBC which was only 3.29 m2/g.&nbsp; The morphology as shown in SEM images corresponds with the BET surface area, showing a smooth surface for RBC, a hollow surface for BBC, and a rough surface for WBC. &nbsp;All three biochars produced alkaline, with pH values around 10, and all have high carbon contents (47.95 - 82.1 %). &nbsp;Cation exchange capacity (CEC) was significantly different (p&lt;0.05) among the biochars, being 26.70 cmol/kg for RBC, 20.7 cmol/kg for BBC, and 13.53 cmol/kg for WBC, which relates to the cations (Ca, Mg, K) and functional groups with negative charge (carboxyl, hydroxyl) present on the biochar surfaces. &nbsp;The highest contents of Ca, Mg and K in rice husk BC may explain its highest CEC values. &nbsp;Thus, although the biochars were produced by the same method, the various feedstocks lead to quite different physico-chemical properties. &nbsp;Ongoing work is linking these physico-chemical properties to the biochar efficiencies in terms of nitrate and ammonia capture capacities for use as fertilisers, and for adsorption of heavy metals (Zn, Cu) or water filtration, in order to design optimal biochar properties for specific applications.

Production of Zeolite from Rice Husk Ash

2014 ◽  
Vol 798-799 ◽  
pp. 617-621 ◽  
Author(s):  
Carolina Resmini Melo ◽  
A.C. Francisco ◽  
Nivaldo C. Kuhnen ◽  
Márcio Roberto da Rocha ◽  
A.R. Melo ◽  
...  
Keyword(s):  
Sodium Hydroxide ◽  
Sodium Silicate ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Hydrothermal Reaction ◽  
Sodium Aluminate ◽  
Routine Practice ◽  
X Ray Diffraction ◽  
X Ray ◽  
4A Zeolite

The use of waste to development of products has been an increasingly routine practice today. In this work was used rice husk ash from combustion boiler for energy for synthesis of sodium silicate. The silicate was obtained by means of ash fusion with sodium hydroxide at a temperature of 1200°C for 2 hours. For the synthesis of 4A-zeolite was performed hydrothermal reaction of sodium silicate, previously obtained with sodium aluminate and sodium hydroxide. The zeolite obtained was characterized by X-ray fluorescence, X-ray diffraction and scanning electron microscopy. The results have indicated the formation of 4A-zeolite.

EVALUASI PERUBAHAN KUALITAS TANAH PADA LAHAN BEKAS PENAMBANGAN NIKEL DI PULAU GEBE

2018 ◽  
Vol 4 (1) ◽  
Author(s):  
Mardi Wibowo
Keyword(s):  
Organic Carbon ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Mining Activity ◽  
Evaluation Activity ◽  
Land Quality ◽  
Environment Quality

Since year 1977 until 2005, PT. ANTAM has been exploited nickel ore resources at Gebe Island – Center ofHalmahera District – North Maluku Province. Mining activity, beside give economically advantages also causedegradation of environment quality espicially land quality. Therefore, it need evaluation activity for change ofland quality at Gebe Island after mining activity.From chemical rehabilitation aspect, post mining land and rehabilitation land indacate very lack and lackfertility (base saturated 45,87 – 99,6%; cation exchange capacity 9,43 – 12,43%; Organic Carbon 1,12 –2,31%). From availability of nutrirnt element aspect, post mining land and rehabilitation land indicate verylack and lack fertility (nitrogen 0,1 – 1,19%). Base on that data, it can be concluded that land reclamationactivity not yet achieve standart condition of chemical land.Key words : land quality, post mining lan

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