Catalytic Copyrolysis of Heavy Oil with Polypropylene

Catalytic and noncatalytic copyrolysis of plastic and heavy oil was studied using thermogravimetric analysis (TGA), pyrolysis reactor experiments, and GC analysis of the formed liquid. As revealed by the TGA experiments, predegradation as a pretreatment method had further lowered the decomposition temperature of polypropylene– (PP−) bitumen mixtures and reduced the severity of catalyst deactivation by coke. The presence of PP in the copyrolysis had increased the liquid yield and decreased the coke yield. The presence of PP in the copyrolysis had shifted the product distribution from heavier to lighter fractions while copyrolysis using predegradation displayed the highest percentage of C5–C9 and C9–C14 fractions. Based on the performance of the catalysts, C5–C14 was produced in the following order, HY > 20% USY > APC > K30, while C14–C20 was produced in the reverse order of K30 > 20% USY > APC > HY. In-depth analysis of the percentage product distribution confirmed the availability of synergies during the thermal copyrolysis of PP and Ex-Mwambe heavy oil. Predegradation as pretreatment method has intensified the contact between the two feed constituents, enabling synergistic effects to materialize. The excess percentage of C5–C9 and the insignificant amount of C20+ produced from the thermal copyrolysis affirmed the possibility that the presence of PP facilitates the conversion of waxy hydrocarbons into lighter products. the conversion of waxy hydrocarbons into lighter products. Coke components from predegradation method are more volatile while the coke formed during normal mixing pyrolysis contained a higher percentage of hard coke

PELATIHAN PENGOLAHAN PRODUK IKAN BANDENG DENGAN BERBAGAI VARIAN DAN INOVATIF DI DESA BELO KECAMATAN PALIBELO KABUPATEN BIMA

Pemberdayaan nelayan terutama mereka yang bergelut di Usaha Tambak Bandeng memberikan warna tersendiri bagi perkembangan usaha yang mengarah kepada pemanfaatan bandeng yang diolah menjadi berbagai varian sejalan dengan perkembangan inovasi teknologi di bidang kuliner masyarakat. Metode yang digunakan adalah  sosialisasi,  pelatihan dan pendampingan,  monitoring  dan  evaluasi. Peserta pelatihan dari  Kelompok tani nelayan Uma Me’e, staf UD Ruma Niwa dan RT. Hasil yang dicapai bahwa  Pengolahan ikan bandeng sebagai wujud representative perubahan paradigm masyarakat memanfaatkan ikan bandeng yang selama ini diolah secara tradisional dengan bahan lokal yang ada, kemudian beralih dengan pengolahan secara modern dengan menggunakan teknologi yang modern memberikan cita rasa dan selera pengguna jasa yang hoby dengan makanan olahan secara modern seperti : Bandeng Presto, Abon bandeng, Stick bandeng dan Krupuk bandeng.  Melalui  pelatihan pengolahan produk ikan bandeng dengan berbagai varian dan inovatif” yang telah   diselenggarakan   oleh   Tim Pengabdian Kepada Masyarakat STISIP Mbojo Bima   dapat   meningkatkan pengetahuan   dan   keterampilan   bagi   kelompok tani nelayan Uma Me’e agar mampu mengolah ikan bandeng yang lebih inovatif dan modern guna meningkatkan kegiatan kewirausahaan dan pendapatan di kalangan mereka. Peserta pelatihan sangat  antusias  dalam  mengikuti  kegiatan  tersebut  dan  besar  harapan peserta  agar  kegiatan  pengabdian  seperti  pelatihan  pengolahan ikan bandeng  dapat  dilaksanakan  secara berkesinambungan  dan  dengan  pemberian  materi  yang  beragam  dalam  upaya  meningkatkan pengetahuan dan keterampilan bagi mereka menuju masyarakat yang sejahtera kedepan

A Mechanistic Model on Catalyst Deactivation by Coke Formation in a CSTR Reactor

A mechanistic model on catalyst deactivation by coke formation in a continuous stirred tank reactor (CSTR) has been developed in the paper. Catalyst deactivation by coke formation was treated as a surface reaction. Four reaction mechanisms representing coke formation through different routes were proposed. The evolved system of ordinary differential equations (ODEs) was solved numerically using MATLAB. This approach was validated by applying it to the skeletal isomerization of 1-pentene over ferrierite. Simulation results were compared qualitatively to those obtained from the literature. Simulation results indicated that coke formation is an extremely rapid process with fast formation of coke components on the strongest acid sites leading to final coke. The coke deposition is slower at higher residence times resulting in more stable product formation and weaker deactivation. The results obtained from this work revealed that the developed model is indeed able to successfully demonstrate the most essential features of catalyst deactivation by coke formation and are in agreement with the findings in the literature. Future work is aimed to extend the study to different reactors such as a plug flow reactor, in addition to analysis of the reaction system’s sensitivity to variables such as temperature and pressure

Estrogen receptor modulatory effects of germinated brown rice bioactives in the uterus of rats through the regulation of estrogen-induced genes

PURPOSE: The expression of genes regulated by estrogen in the uterus was studied in ovariectomized (OVX) rats treated with germinated brown rice (GBR) bioactives, and compared to Remifemin or estrogen at different doses to identify the regulation of these genes in the uterus and their molecular mechanisms. METHODS: Rats were treated orally with GBR bioactives (phenolics), acylated steryl glucosides (ASG), γ-amino butyric acid (GABA), and γ-oryzanol (ORZ) at 100 and 200 mg/kg, Remifemin (REM) at 10 mg/kg and 20 mg/kg, or estrogen (EST) at 0.2 mg/kg. Ribonucleic acid (RNA) was extracted from the uterus, and messenger (m)RNA expression of selected genes encoding estrogen receptor-beta (ER-β), calcium-binding protein (CaBP9k), complement protein (C3), heat shock protein 70 kDa (HSP70), and interleukin (IL)-4 receptor were quantified. Similarly, serum steroid hormone concentration was monitored at 2, 4, and 8 weeks after treatments. ER-β antibody binding to the uterus sections was also studied using immunohistochemistry. RESULTS: The group treated with EST (0.2 mg/kg) upregulated ER-β, C3, and IL-4 receptor genes compared to other groups (P0.05) in the progesterone levels in the OVX untreated group compared to the sham and other treated groups. There was a significant increase at 8 weeks in the level of FSH (P0.05) in serum luteinizing hormone (LH) between the OVX untreated group and other groups. The sham and GBR phenolics treated group showed ER-β reactivity at the glandular epithelium, while the group treated with EST showed immunoreactivity at the glandular, luminal, and stromal epithelium. CONCLUSION: GBR phenolics moderately regulate the expression of ER-β, HSP70, and IL-4 receptor genes, and gave a positive immunoreaction to ER-β antigen in the uterus. ASG regulates the expression of CaBP9k and IL-4 receptor genes, and ORZ regulates the expression of the CaBP9k gene, while GABA at 100 mg/kg regulates the expression of the HSP70 gene. GBR and its bioactives might have an effect on estrogen-regulated genes in the uterus of rats

Improving the Conversion of Biomass in Catalytic Pyrolysis via Intensification of Biomass—Catalyst Contact by Co-Pressing

Biomass pyrolysis is a promising technology for fuel and chemical production from an abundant renewable source. It takes place usually in two stages; non-catalytic pyrolysis with further catalytic upgrading of the formed pyrolysis oil. The direct catalytic pyrolysis of biomass reduces the pyrolysis temperature, increase the yield to target products and improves their quality. However, in such one-stage process the contact between biomass and solid catalyst particles is poor leading to an excessively high degree of pure thermal pyrolysis reactions. The aim of this study was to enhance the catalyst-biomass contact via co-pressing of biomass and catalyst particles as a pre-treatment method. Catalytic pyrolysis of biomass components with HY and USY zeolites was studied using thermogravimetric analysis (TGA), as well as experiments in a pyrolysis reactor. The liquid and coke yields were characterized using gas chromatography, and TGA respectively. The TGA results showed that the degradation of the co-pressed cellulose occurred at lower temperatures compared to the pure thermal degradation, as well as catalytic degradation of non-pretreated cellulose. All biomass components produced better results using the co-pressing method, where the liquid yields increased while coke/char yields decreased. Bio-oil from catalytic pyrolysis of cellulose with HY catalyst mainly produced heavier fractions, while in the presence of USY catalyst medium fraction was mainly produced within the gasoline range. For hemicellulose catalytic pyrolysis, the catalysts had similar effects in enhancing the lighter fraction, but specifically, HY showed higher selectivity to middle fraction while USY has produced higher percentage of lighter fraction. Using with both catalysts, co-pressing had the best effect of eliminating the heavier fraction and improving the gasoline range fraction. Spent catalyst from co-pressed sample had lower concentrations of coke/char components due to the shorter residence times of volatiles, which suppresses the occurrence of secondary reactions leading to coke/char formations

The bureaucratic political relation model in perception of officers public: A study on bima city government

The relationship between politics and bureaucracy is significant to observe because this concerns the interests of policymakers and stakeholders related to the politics of local government policies. In this regard, this study aims to describe the Political Relations Model Bureaucracy in the Perception of Public Officials (A Study at the Bima City Government). The approach in this research is descriptive qualitative. The results showed that the Relationship Model Bureaucratic Politics in the Perception of Public Officials (A Study at the Bima City Government) have interrelated and mutually supportive relationships both in formulating, implement and evaluate policies both political and administration towards the implementation of the public bureaucracy in the Bima City Government. Perception public officials concerning political intervention in carrying out activities bureaucracy are reflected in the process of development, administration, and technique as well as transfer and high employee rotation, institutional restructuring of the Bima City government bureaucracy as well The formulation of the Kota Bima Regional Financial Budgeting always occurs for political intervention interests of both public officials and career officials in running the wheel the government in the city of Bima