Removal Pf SO2 And No From Simulated Flue Gas Using Rice Husk ASH/Cao/Ceo2 Sorbent.

Tujuan kajian ini adalah untuk menghasilkan bahan serap daripada abu sekam padi untuk penyingkiran serentak sulfur dioksida (SO2) dan nitrogen oksida (NO). The purpose of this study was to develop a sorbent synthesized from rice husk ash (RHA) for simultaneous removal of sulfur dioxide (SO2) and nitric oxide (NO)

Pertunjukan Iyabelāle dalam upacara pernikahan Bugis di Wajo (kasus Pa’biōla To Tēmpe pada pernikahan keluaga H. Andi Burhanuddin Unru)

ABSTRAK Penelitian ini bertujuan : Mengetahui Bentuk pertunjukan Iyabelāle dalam upacara pernikahan Bugis di Wajo kasus Pa’biōla To Tēmpe pada upacara pernikahan keluaga H. Andi Burhanuddin Unru. Pengumpulan data dilakukan dengan menggunakan teknik wawancara, observasi, dan dokumentasi. Analisis data dilakukan dengan teknik analisis deskriptif kualitatif dengan langkah-langkah : 1) Mengorganisasi data: Cara ini dilakukan dengan membaca berulang kali data yang ada sehingga peneliti dapat menemukan data yang sesuai dengan penelitiannya dan membuang data yang tidak sesuai. 2) Membuat kategori, menentukan tema, dan pola. Dari pembahasan dan analisis data dapat ditarik kesimpulan : 1. Pada tahun 1980 pemerintah Wajo khususnya Dinas Pariwisata Wajo mengadakan perlombaan Iyabelāle berpusat di kota Sengkang yang dimana menghadirkan dan mengumpulkan para pelaku (seniman ) Iyabelāle dari berbagai daerah yang ada di Wajo. Hingga sekitar pada tahun 1990 oleh pihak pemerintah kebudayaan setempat memberi ruang bagi para seniman Iyabelāle untuk menyajikan pertunjukan musiknya kedalam prosesi penyelenggaraan pesta adat pernikahan. Kemudian mengahadirkan Iyabelāle sebagai tradisi yang dihadikan setiap pesta pernikahan hingga saat ini: Bentuk pertunjukan Iyabelāle dalam upacara pernikahan Bugis di Wajo kasus Pa’biōla To Tēmpe pada pernikahan keluaga H. Andi Burhanuddin Unru. Iyabelāle dimainkan oleh kaum wanita maupun pria dewasa dengan umur kurang lebih 30-50 tahun. Yang dimainkan oleh sekurang-kurangnya satu orang dan maksimal sebanyak-banyaknya, sesuai dengan kebutuhan dan keadaan tempat pertunjukan seperti biasanya dalam acara pernikahan ( A’ Pa’Bottīngêng ) yang dilakukan dalam prosesi Siraman ( diomājang ), dan Pensucian atau pemberian daun pacar (Mappacci)

Kinetic Study of the Anaerobic Digestion of Recycled Paper Mill Effluent (RPME) by Using a Novel Modified Anaerobic Hybrid Baffled (MAHB) Reactor

The process kinetics of an anaerobic digestion process for treating recycled paper mill effluent (RPME) was investigated. A laboratory-scale modified anaerobic hybrid baffled reactor (MAHB) was operated at hydraulic retention times of 1, 3, 5, and 7 days, and the results were analyzed for the kinetic models. A kinetic study was conducted by examining the phase kinetics of the anaerobic digestion process, which were divided into three main stages: hydrolysis kinetics, acetogenesis kinetics, and methane production kinetics. The study demonstrated that hydrolysis was the rate-limiting step. The applied Monod and Contois kinetic models showed satisfactory prediction with µmax values of 1.476 and 0.6796 L day−1 , respectivel

Performance and Operational Characteristics of Modified Anaerobic Hybrid Baffled (MAHB) Reactor Treating Low Strength Recycled Paper Mill Effluent (RPME) wastewater / Siti Roshayu Hassan, Nastaein Qamaruz Zaman and Irvan Dahlan

The performance and operational characteristics of a laboratory scale modified anaerobic hybrid baffled (MAHB) reactor were studied using recycled paper mill effluent (RPME) wastewater. MAHB reactor was continuously operated at 35°C for 90 days with organic loading rate (OLR) increased from 0.14 to 0.57 g/L/dy. This present study demonstrated that the system was proficient in treating low strength RPME wastewater. Highest carbon oxygen demand (COD) removal were recorded up to 97% for an organic loading of 0.57 g /L/dy while effluent alkalinity assured that the system pH in the MAHB compartments were of great advantages to acidogens and methanogens respectively. Methane and biogas production rate shows increment as the load increases, which evidently indicated that the most significant approach to enhance gas production rates involves the increment of incoming substrate moderately. Variations of biogas and volatile fatty acid (VFA) in different compartments of MAHB reactor indicated the chronological degradation of substrate. The compartmental structure of MAHB reactor provided its strong ability to resist shock loads. From this present study, it shows the potential usage of MAHB reactor broadens the usage of multi-phase anaerobic technology for industrial wastewater treatment

Statistical Modeling and Optimization of Process Parameters for 2, 4-Dichlorophenoxyacetic Acid Removal by Using AC/PDMAEMA Hydrogel Adsorbent: Comparison of Different RSM Designs and ANN Training Methods

In this study, the response surface methodology (RSM) and artificial neural network (ANN) were employed to study the adsorption process of 2,4-dichlorophenoxyacetic acid (2,4-D) by using modified hydrogel, i.e., activated carbon poly(dimethylaminoethyl methacrylate) (AC/PDMAEMA hydrogel). The effect of pH, the initial concentration of 2,4-D and the activated carbon content on the removal of 2,4-D and adsorption capacity were investigated through the face-centered composite design (FCCD), optimal design and two-level factorial design. The response surface plot suggested that higher removal of 2,4-D and adsorption capacity could be achieved at the higher initial concentration of 2,4-D and lower pH and activated carbon content. The modeling and optimization for the adsorption process of 2,4-D were also carried out by different design methods of RSM and different training methods of ANN. It was found that among the three design methods of RSM, the optimal design has the highest accuracy for the prediction of 2,4-D removal and adsorption capacity (R2 = 0.9958 and R2 = 0.9998, respectively). The numerical optimization of the optimal design found that the maximum removal of 2,4-D and adsorption capacity of 65.01% and 65.29 mg/g, respectively, were obtained at a pH of 3, initial concentration of 2,4-D of 94.52 mg/L and 2.5 wt% of activated carbon. Apart from the optimization of process parameters, the neural network architecture was also optimized by trial and error with different numbers of hidden neurons in the layers to obtain the best performance of the response. The optimization of the neural network was performed with different training methods. It was found that among the three training methods of the ANN model, the Bayesian Regularization method had the highest R2 and lowest mean square error (MSE) with the optimum network architecture of 3:9:2. The optimum condition obtained from RSM was also simulated with the optimized neural network architecture to validate the responses and adequacy of the RSM model

Waste Material Adsorbents for Zinc Removal from Wastewater: A Comprehensive Review

This review examines a variety of adsorbents and discusses mechanisms, modification methods, recovery and regeneration, and commercial applications. A summary of available researches has been composed by a wide range of potentially low-cost modified adsorbents including activated carbon, natural source adsorbents (clay, bentonite, zeolite, etc.), biosorbents (black gram husk, sugar-beet pectin gels, citrus peels, banana and orange peels, carrot residues, cassava waste, algae, algal, marine green macroalgae, etc.), and byproduct adsorbents (sawdust, lignin, rice husk, rice husk ash, coal fly ash, etc.). From the literature survey, different adsorbents were compared in terms of Zn2+ adsorption capacity; also Zn2+ adsorption capacity was compared with other metals adsorption. Thus, some of the highest adsorption capacities reported for Zn2+ are 168 mg/g powdered waste sludge, 128.8 mg/g dried marine green macroalgae, 73.2 mg/g lignin, 55.82 mg/g cassava waste, and 52.91 mg/g bentonite. Furthermore, modification of adsorbents can improve adsorption capacity. Regeneration cost is important, but if consumption of virgin adsorbent is reduced, then multiple economic, industrial, and environmental benefits can be gained. Finally, the main drawback of the already published Zn2+ adsorption researches is that their use is still in the laboratory stage mostly without scale-up, pilot studies, or commercialization

<span style="font-size:15.0pt;font-family:Times-Roman;mso-bidi-font-family:Times-Roman">Development of dry methods for the removal of SO<span style="font-size:8.5pt; font-family:Times-Roman;mso-bidi-font-family:Times-Roman">₂ <span style="font-size:15.0pt;font-family:Times-Roman;mso-bidi-font-family:Times-Roman">and NO<span style="font-size:8.5pt;font-family:Times-Roman;mso-bidi-font-family: Times-Roman">_x <span style="font-size:15.0pt;font-family:Times-Roman; mso-bidi-font-family:Times-Roman">from Flue Gases – A Review </span></span></span></span></span>

83-87Continuous increase in economic activities couple with the growing population throughout the world has led to a tremendous increase in energy consumption. In the near future, the energy consumption is expected to further increase especially in developing countries. This has led to a significant increase in industrial activity in recent times and consequently resulted in a massive increase of pollutants, especially air pollution released to the atmosphere. Among the several air pollutants that contaminate our planet, SO2 <span style="font-size:9.0pt;font-family:Times-Roman;mso-bidi-font-family: Times-Roman">and NO<span style="font-size:5.0pt;font-family:Times-Roman; mso-bidi-font-family:Times-Roman">x  have received special attention due to the fact that these two pollutants have toxic and acidic characteristics. SO<span style="font-size:5.0pt;font-family: Times-Roman;mso-bidi-font-family:Times-Roman">2 <span style="font-size: 9.0pt;font-family:Times-Roman;mso-bidi-font-family:Times-Roman">and NOx  <span style="font-size:9.0pt; font-family:Times-Roman;mso-bidi-font-family:Times-Roman">have been linked to the formation of acid rain and many other undesirable environmental hazards. This paper reviews background information on the various approaches and methods that are currently being used to control SO<span style="font-size:5.0pt; font-family:Times-Roman;mso-bidi-font-family:Times-Roman">2 and NO<span style="font-size:5.0pt;font-family:Times-Roman;mso-bidi-font-family: Times-Roman">x  emissions. Particular interest is given to research findings on the development of dry-type processes at low temperature that appear to be the most promising technique for the removal of SO<span style="font-size:5.0pt;font-family: Times-Roman;mso-bidi-font-family:Times-Roman">2 <span style="font-size: 9.0pt;font-family:Times-Roman;mso-bidi-font-family:Times-Roman">and also simultaneous removal of SO<span style="font-size:5.0pt;font-family:Times-Roman; mso-bidi-font-family:Times-Roman">2 <span style="font-size:9.0pt; font-family:Times-Roman;mso-bidi-font-family:Times-Roman">and NOx. </span

Tumor necrosis factor-α and osterix expression after the transplantation of a hydroxyapatite scaffold from crab shell (Portunus pelagicus) in the post-extraction socket of Cavia cobaya

Background: Socket preservation using bone graft is one way to minimise resorption and maximise the bone formation process. Tumor necrosis factor-α (TNF-α) is an inflammatory cytokine that affects bone regenerating osteoblast activity, while osterix (Osx) is an osteoblast-specific transcription factor that activates gene receptors during pre-osteoblast differentiation. The hydroxyapatite (HA) scaffold from crab shells (Portunus pelagicus) has osteoconduction properties. Purpose: To analyse the decrease of TNF-α expression and the increase of Osx expression and the correlation between these two in the post-extraction socket after the transplantation of a crab shell HA scaffold. Methods: The lower left incisors of Cavia cobaya (n = 24) were extracted and divided into four groups: the first and second groups were control groups on Day 7 and Day 14 (K7 and K14), the third and fourth groups were treatment groups (P7 and P14). The statistical analysis used was a multivariate analysis of variance (MANOVA) with a significance level of 0.05. Results: A MANOVA test showed that the use of crab shell HA scaffolds led to a significant difference (p < 0.05) in TNF-α expression (p = 0.01) and Osx expression (p = 0.01). A Pearson correlation test result showed a strong inverse correlation between TNF-α and Osx expressions (p = 0.00 and r = -0.78). Conclusion: The transplantation of HA scaffolds from crab shells can decrease TNF-α expression but increase Osx expression in the post-extraction socket of C. cobayas. Furthermore, an inverse correlation was found between TNF-α and Osx