The influence of the molar ratio H2O/SiO2 in the synthesis directly from Bangka Belitung’s Kaolin has been studied by performing synthesis of ZSM-5 with a variation of the molar ratio H2O/SiO2 is different at 15, 25, 30, and 35. Weighing 3.980 g Bangka’s kaolin are added other material so obtained molar composition 10Na2O: 120SiO2: 2Al2O3: 1800-4200H2O, and 1% of silicalite seed, subsequent hydrothermal process of 175°C for 24 hours. The result of solids was analyzed by X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR) and SEM EDX to the analyzed morphology of ZSM-5 crystal. The synthesis of ZSM-5 was directly optimum with molar ratio H2O/SiO2 of 30 having the highest cristallinity and largest crystal size of 59.44% and 3.795 µm, respectively.
In the ZSM-5/g-C3N4 composite, ZSM-5 facilitates the charge transfer from g-C3N4 to the surface due to its lower charge transfer resistance.
ZSM-5’s adsorption study of kaolin Bangka without organic template using congo red with initial concentration of 50-250 mg / L with variation of contact time of 40-180 minutes. The results of the adsorption of Congo Red (CR) dye at 30oC-50oC with pH 7, the increase in contact time causes the dye to decrease significantly. In addition, an increase in adsorption rate at first step then slows down as it approaches to the equilibrium point. The experimental results using each temperature variation, showing the equilibrium time of the adsorption process at contact time of 100 minutes. Four isotherm adsorption models were used to analyze and measure the results of experimental data adsorption. The ZSM-5 adsorption capacity of Bangka kaolin is exhibited for the reds of Congo isotherm adsorption. The results of isotherm adsorption studies on three temperatures showed the fitting into Langmuir isotherms adsorption type which means the adsroption occured physically monolayer, the kinetics of adsorption clearly follows the first-pseudo-order reaction kinetics with higher R2 closes to 1. The adsorption thermodynamics analysis show that the adsorption chategorized as exthormic reaction (negative value of ), this conclusion is supported by adsortion capacity data in 180 min contact times which demostrate that the increasing adorption temperature decreasing amount adsorbate being adsorbed. The (Gibb’s Energy) of adsorption are negative in several temperature which demonstrates that the adsroption are spontanously occured in ech temperature. The adsorption study can be used as a reference for ZSM-5 adsorption optimization.
Rhodamine B (RB) and Methylene Blue (MB) dyes adsorption using adsorbent ZSM-5 synthesized from Bangka kaolin were investigated in this study. The effects of the initial concentration, contact time and temperature on the adsorption process were also analyzed. The effect of the initial concentration and contact time played an important role in the adsorption process; however, the effect differs significantly in both dyes. The temperature plays little role in the dye adsorption process. The results showed the adsorption process occurred in ZSM-5 adhere to Langmuir isothermal adsorption model showing that the adsorption process occurred to be monolayer. Based on the kinetics studies, the pseudo-first-order kinetic model represents the adsorption kinetics that occurs for both dyes onto the synthesized ZSM-5. Thermodynamic parameters namely Gibbs free energy (ΔG°), standard entropy changes (ΔS°) and standard enthalpy (ΔH°) reveal that the adsorption process onto ZSM-5 for both dyes was spontaneous and exothermic.
A hierarchical zeolite ZSM-5 with micro and meso-pore was prepared by optimising the most affecting parameter in sequence of desilication and dealumination. The physicochemical properties of zeolite were characterised with XRD, nitrogen adsorption–desorption, FTIR and SEM. The potential of this zeolite for decolorisation of CR, RY, MB, RhB, DB-1 and DB-14 was evaluated with adsorption isotherm, thermodynamics, kinetics, and influencing parameter for adsorption. The unique modification of ZSM-5 resulted in lower crystallinity, easier porosity control, rich terminal silanol and unbridged silanol groups which assisted in higher adsorption capacity. The adsorption capacity of the optimum ZSM-5 was 323, 435, 589, 625, 61 and 244 mg/g for CR, RY, MB, RhB, DB-1 and DB-14, respectively. The dye adsorption progressed through pseudo-first-order kinetic and close to the Langmuir model. The adsorption mechanism is proposed mainly through interaction between deprotonated silanol site and the electron-rich dye site.
The ZSM-5-adsorption capacity, which is synthesized directly from Bangka kaolin, has been thoroughly to remove the basic dye in a textile waste solution. The Langmuir and Freundlich isotherm models were used to analyze and measure the results of experimental adsorption data from the red adsorption of Congo Red (CR), Auramin (Au), Methylen Blue (MB), Azin (Az), Rodamin B (RB) on ZSM-5 at a temperature of 40 °C. The ZSM-5 adsorption capacity of Bangka kaolin showed dye absorption : Congo Red, Auramin, Methylen Blue, Azin and Rodamin B respectively were 129,157, 134, 205 and 210 mg/g. Therefore, ZM-5 of Bangka kaolin is respectively good adsorbent to remove the textile base dye waste.
Leuwiliang Village, Leuwiliang District, Bogor Regency, is a village that has a fairly dense population with diverse livelihoods. Village Government information is known as 25% of the population has not had a job, so classified as a non-productive society with a very limited educational background and skills. The people of this group are right as partners of abdimas to be given an advanced skills in order to be independent. In this abdimas given the skill to make alum from waste used drink cans. The existing hope can transform into a working society and become a productive society. Instead it can improve the economic prosperity of the village. Abdimas this time was chosen from RW 10 residents of Leuwiliang village with potential both men and women. In addition, also selected the Foundation of Islamic Education Saefulloh Assa'diyyah (YAPISA) which can provide a means of producing alum from the raw materials used tin cans. Implementation of this program is done through training and demonstration skill of alum making from raw materials of beverage cans for household scale until finished product with good alum quality, this training had be done 4 time in July and August 2017. The results are very satisfying, the community was very enthusiast, they able to make alum products well and able to demonstrate how to use alum products for purification of turbid water. Keywords: abdimas, alum, KOH, waste used tin cans. ABSTRAKDesa Leuwiliang Kecamatan Leuwiliang Kabupaten Bogor, adalah desa yang memiliki jumlah penduduk cukup padat dengan mata pencaharian yang beragam. Dari informasi pemerintah Desa Leuwiliang diketahui sebanyak 25% penduduk belum memiliki pekerjaan, sehingga tergolong sebagai masyarakat non-produktif dengan latar belakang pendidikan dan keterampilan yang sangat terbatas. Masyarakat kelompok ini tepat sebagai mitra Abdimas untuk diberikan keterampilan lanjut agar bisa mandiri. Pada abdimas ini diberikan keterampilan membuat tawas dari limbah kaleng bekas minuman. Harapan yang ada dapat mengubah menjadi masyarakat berkarya serta menjadi masyarakat yang produktif. Alih-alih dapat meningkatkan kesejahteraan ekonomi di desa tersebut. Abdimas kali ini dipilih dari warga RW 10 Desa Leuwiliang yang potensial baik laki-laki maupun perempuan. Selain itu dipilih juga Yayasan Pendidikan Islam Saefulloh Assa'diyyah (YAPISA) yang dapat menyediakan sarana berupa tempat memproduksi tawas dari bahan baku berupa kaleng bekas. Pelaksanaan program ini dilakukan melalui pelatihan dan demontrasi keterampilan pembuatan tawas dari bahan baku kaleng bekas minuman untuk skala industri rumah tangga sampai dihasilkan produk jadi dengan kualitas tawas yang baik. Pelatihan ini dilaksanakan 4
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