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Neural-fuzzy control system application for monitoring process response and control of anaerobic hybrid reactor in wastewater treatment and biogas production

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Journal of Environmental Sciences 2010年第12期22卷 1883-1890页

作者： Chaiwat Waewsak Annop Nopharatana Pawinee Chaiprasert Division of Biotechnology School of Bioresources and TechnologyKing Mongkut's University of Technology Thonburi Excellent Center of Waste Utilization and Management Pilot Plant Development and Training InstituteKing Mongkut's University of Technology Thonburi

Based on the developed neural-fuzzy control system for anaerobic hybrid reactor （AHR） in wastewater treatment and biogas production, the neural network with backpropagation algorithm for prediction of the variables pH, alkalinity （Alk） and total volatile acids （TVA） at present day time t was used as input data for the fuzzy logic to calculate the influent feed flow rate that was applied to control and monitor the process response at different operations in the initial, overload influent feeding and the recovery phases. In all three phases, this neural-fuzzy control system showed great potential to control AHR in high stability and performance and quick response. Although in the overloading operation phase II with two fold calculating influent flow rate together with a two fold organic loading rate （OLR）, this control system had rapid response and was sensitive to the intended overload. When the influent feeding rate was followed by the calculation of control system in the initial operation phase I and the recovery operation phase III, it was found that the neural-fuzzy control system application was capable of controlling the AHR in a good manner with the pH close to 7, TVA/Alk 〈 0.4 and COD removal 〉 80% with biogas and methane yields at 0.45 and 0.30 m^3/kg COD removed.

关键词： anaerobic hybrid reactor influent feed flow rate neural-fuzzy control system process response

Scope of biodiesel from oils of woody plants:a review

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Clean Energy 2020年第2期4卷 89-106页

作者： Baskar Thangaraj Pravin Raj Solomon pilot plant development and training institute King Mongkut’s University of Technology ThonburiBangkhuntienchaitalay RoadThakamBangkok-10150Thailand School of Chemical and Biotechnology SASTRA-Deemed UniversityThanjavur-613402Tamil NaduIndia

Non-edible oils obtained from chosen non-conventional woody plants are considered as potential raw materials for biodiesel *** plants mostly grow in *** characteristics of these oils as raw material are very much in tune with the properties of biodiesel such as long-chain hydrocarbon,having an adequate level of unsaturation with branched *** primary methods are being followed to make biodiesel from vegetable *** are direct use through blending,microemulsion,thermal cracking(pyrolysis)and ***-edible oil would eliminate the issue of food vs *** biodiesel manufactured from oils of woody plants may partially reduce the demand for liquid-fuel energy and addresses the environmental consequences of using fossil *** from a total of 17 species of woody plants(Angiosperms)belonging to 14 families are considered in this *** habit,habitat and geographical distribution of each species are also *** physico-chemical properties of their oil,with special reference to the fatty-acid profile that ultimately decides the characteristics of the biodiesel prepared from them,are reviewed.

关键词： woody plant oils biodiesel transesterification biodiesel properties

Biodiesel production by the electrocatalytic process: a review

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Clean Energy 2021年第1期5卷 19-31页

作者： Baskar Thangaraj Pravin Raj Solomon pilot plant development and training institute King Mongkut’s University of Technology ThonburiBangkhuntien-chaitalay RoadThakamBangkok 10150Thailand School of Chemical&Biotechnology SASTRA-Deemed UniversityThanjavur 613401Tamil NaduIndia

Biodiesel-an impressive alternative fuel with favourable physico-chemical properties having environmental benefits-is prepared from vegetable ***,the cost is one of the main hurdles in commercializing *** production by conventional transesterification processes needs high ambient temperature and a specialized *** to the multifaceted adversities of many of the catalysts,there is active consideration for an electrocatalytic process that does not require elevated *** addition,an electrocatalytic process is carried out in the presence or absence of a catalyst or *** this review,various parameters such as electrolysis voltage,stirring rate,electrode type,water content,co-solvent type,reaction temperature,reaction duration,oil-to-methanol molar ratio and concentration of NaCl affecting the electrocatalytic transesterification process are presented.

关键词： electrolysis electrocatalytic reactor electrodes transesterification biodiesel

Proteomic studies of plant and bacteria interactions during benzene remediation

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Journal of Environmental Sciences 2020年第8期32卷 161-170页

作者： Wararat Sriprapat Sittiruk Roytrakul Paitip Thiravetyan Department of Agriculture Biotechnology Research and Development OfficeSirindhorn Plant Genetic Resources BuildingPathum Thani 12110Thailand pilot plant development and training institute King Mongkut’s University of Technology ThonburiBangkok 10150Thailand National Center for Genetic Engineering and Biotechnology(BIOTEC) Thailand Science ParkPathum Thani 12120Thailand Division of Biotechnology School of Bioresources and TechnologyKing Mongkut’s University of Technology ThonburiBangkok 10150Thailand

Phytoremediation is a sustainable remedial approach for removing benzene from *** associated bacteria could ameliorate the phytotoxic effects of benzene on plant,although the specificity of these interactions is ***,we used proteomics approach to gain a better understanding of the mechanisms involved in plant-bacteria *** associated bacteria was isolated and subsequently inoculated into the sterilized Helianthus annuus,and the uptake rates of benzene by these inoculated plants were *** the end of the experiment,leaves and roots proteins were *** results showed inoculated *** with strain EnL3 removed more benzene than other treatments after 96 ***3 was identified as Enterobacter *** to 16S rDNA *** on the comparison of proteins,62 proteins were significantly up or down regulated in inoculated leaves,while 35 proteins were significantly up or down regulated in inoculated ***,there were 4 and 3 identified proteins presented only in inoculated *** leaves and roots,*** proteins involved in several functions including transcription and translation,photosynthesis,and stress *** network among anti-oxidant defense system,protein synthesis,and photosynthetic electron transfer are involved in collaboratively activate the benzene uptake and stress tolerance in plant.

关键词： Proteomics Phytoremediation plant and bacteria interactions Benzene Air pollution

Combination eect of pH and acetate on enzymatic cellulose hydrolysis

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Journal of Environmental Sciences 2009年第7期21卷 965-970页

作者： ROMSAIYUD Angsana SONGKASIRI Warinthorn NOPHARATANA Annop CHAIPRASERT Pawinee Division of Biotechnology School of Bioresources and Technology King Mongkut's University of Technology Thonburi Thakham Bangkhuntien Bangkok 10150 Thailand Excellent Center of Waste Utilization and Management National Center for Genetic Engineering and Biotechnology Bangkhuntien Bangkok 10150 Thailand pilot plant development and training institute King Mongkut's University of Technology Thonburi Bangkhuntien Bangkok 10150 Thailand

The productivity and efficiency of cellulase are significant in cellulose hydrolysis. With the accumulation of volatile fatty acids （VFAs）, the pH value in anaerobic digestion system is reduced. Therefore, this study will find out how the pH and the amount of acetate influence the enzymatic hydrolysis of cellulose. The effects of pH and acetate on cellulase produced from Bacillus coagulans were studied at various pH 5-8, and acetate concentrations （0-60 mmol/L）. A batch kinetic model for enzymatic cellulose hydrolysis was constructed from experimental data and performed. The base hypothesis was as follows： the rates of enzymatic cellulose hydrolysis rely on pH and acetate concentration. The results showed that the suitable pH range for cellulase production and cellulose hydrolysis （represents efficiency of cellulase） was 2.6-7.5, and 5.3-8.3, respectively. Moreover, acetate in the culture medium had an effect on cellulase production （KI = 49.50 mmol/L, n = 1.7） less than cellulose hydrolysis （/（＇i = 37.85 mmol/L, n = 2.0）. The results indicated that both the pH of suspension and acidogenic products influence the enzymatic hydrolysis of cellulose in an anaerobic environment. To enhance the cellulose hydrolysis rate, the accumulated acetate concentration should be lower than 25 mmol/L, and pH should be maintained at 7.

关键词： acetate Bacillus coagulans cellulase cellulose hydrolysis kinetics

Effect of various ratios of poly(3-hexylthiophene)with polyvinyl alcohol gel-polymer electrolytes in flexible sodium-ion batteries using Samanea saman tree-leaf-derived carbon quantum dots decorated with SnO_(2)and NaVO_(3)

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Clean Energy 2022年第1期6卷 226-237页

作者： Baskar Thangaraj Nutthapon Wongyao Pravin Raj Solomon Wachira Chaiworn Surawut Chuangchote Werasak Surareungchai pilot plant development and training institute King Mongkut’s University of Technology ThonburiBangkhuntien-chaitalay RoadThakamBangkok 10150Thailand Fuel Cells and Hydrogen Research and Engineering Center Pilot Plant Development and Training InstituteKing Mongkut’s University of Technology ThonburiBangkok 10140Thailand Department of Research and development Velammal Medical College Hospital and Research InstituteMadurai 625009Tamil NaduIndia Department of Tool and Materials Engineering Faculty of EngineeringKing Mongkut’s University of Technology ThonburiBangmodBangkok 10140Thailand Research Center of Advanced Materials for Energy and Environmental Technology King Mongkut’s University of Technology ThonburiBangmodBangkok 10140Thailand School of Bioresources and Technology Nanoscience&Nanotechnology Graduate ProgrammeFaculty of ScienceKing Mongkut’s University of Technology ThonburiBangkhuntien-chaitalay RoadThakamBangkok 10150Thailand

Gel-polymer electrolytes with high thermal stability and mechanical properties were considered suitable in rechargeable batteries so as to overcome the problems encountered in liquid *** a previous study,flexible sodium-ion batteries(FSIBs)were fabri-cated using electrodes made of carbon quantum dots(CQDs)decorated with SnO_(2) and NaVO_(3) utilizing a polyvinyl alcohol(PVA)/P3HT gel-polymer electrolyte at a ratio of 1:*** addition,various separators such as indium-doped tin oxide/polyoxyethylene tridecyl ether(ITO/PTE),rice paper(RP),silicone with three big holes(SIL BH),silicone with many small holes(SIL SH)and cellulose paper(CP)were tested in flexible Na-ion *** SIL SH delivered a high specific discharge capacity of 4246 mAh g^(-1) in the initial cycle at 2 V and maintained a value of 71 mAh g^(-1) in the 50th *** the aim of improving the cyclic ability of FSIBs,different weight ratios of PVA/P3HT(1:0.025,1:0.05,1:0.1,1:0.15,1:0.2)were tried in this work using the electrodes CQDs@SnO_(2) and CQDs@NaVO_(3).The above ratios were referred to as B25,B50,B100,B150 and B200,*** SH was used as a *** voltammetry studies indicated that B150 had a high specific capacitance of 13062 F g^(-1).B25 and B100 exhibited high discharge capacities(171 mAh g^(-1))and(151 mAh g^(-1))compared to that of other ratios B50(75 mAh g^(-1)),B150(88 mAh g^(-1))and B200(54 mAh g^(-1))in the 50th cycle at 2.0 *** study reveals the scope of developing FSIBs of high capacity and cyclability at different voltages using carbonaceous electrodes and gel-polymer electrolytes with different ratios of PVA/*** focus of the present study is to bring out the optimum ratio of PVA/P3HT for maximizing the cyclic ability of FSIBs.

关键词： biomass carbon quantum dots gel-polymer electrolytes energy storage flexible Na-ion battery

Electrochemical Detection of Salicylic Acid in Pickled Fruit/Vegetable and Juice

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Journal of Analysis and Testing 2020年第4期4卷 291-297页

作者： Warinthorn Detpisuttitham Chatuporn Phanthong Sirimarn Ngamchana Patsamon Rijiravanich Werasak Surareungchai School of Bioresources and Technology King Mongkut’s University of Technology ThonburiBang Khun ThianBangkok 10150Thailand pilot plant development and training institute King Mongkut’s University of Technology ThonburiBang Khun ThianBangkok 10150Thailand BioSciences and Systems Biology Research Team National Center for Genetic Engineering and BiotechnologyNational Sciences and Technology Development Agency at King Mongkut’s University of Technology ThonburiBang Khun ThianBangkok 10150Thailand

Salicylic acid(SA)is used as a preservative in food and a biocide in some consumer ***,in some countries its use is *** main problem in the electroanalytical determination of SA is the formation of a passive film during the electro-oxidation of *** alleviate the passivation during SA measurement,the experiment was conducted by screen-printed carbon electrode(SPCE).While,differential pulse voltammetry(DPV)was essential for oxidation process to provide better *** conditions of optimized pH and electrolyte concentration,we have calibrated SA in the range of 0.001-0.2 mM,with and LOD of 1.6μ*** relative standard deviation of the sensor responses to 40μM and 100μM SA(n=20)was<3%.SA recoveries in samples such as pickled green mustard,pickled bamboo shoots,pickled mango,pickled lime,pickle ginger and apple juice were found to be in the range of 84-113%.

关键词： Salicylic acid Pickled vegetable and fruit Electrochemical method Screen-printed carbon electrode

New language outcome measures for Mandarin speaking children with hearing loss

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Journal of Otology 2016年第1期11卷 24-32页

作者： Xueman Liu Jill de Villiers Wendy Lee Chunyan Ning Eric Rolfhus Teresa Hutchings Fan Jiang Yiwen Zhang University of Texas at Dallas Communication Sciences and Disorders Bethel Hearing and Speaking Training Center Research and Development Smith College Psychology and Philosophy Bethel Hearing and Speaking Training Center Research and Development Tianjin Normal University Institute of Linguistics Bethel Hearing and Speaking Training Center Research and Development Bethel Hearing and Speaking training Center Research and Development Shanghai Children's Medical Center Department of Developmental and Behavioral Pediatrics

Objective:The paper discusses recent evidence on the assessment of language outcomes in children with hearing loss acquiring oral language. Methods: Research emphasizes that language tests must be specific enough to capture subtle deficits in vocabulary and grammar learning at different developmental ages. The Diagnostic Receptive and Expressive Assessment of Mandarin (DREAM) was carefully designed to be a comprehensive standardized Mandarin assessment normed in China's Mainland. Results:This paper summarizes the evidence-based item design process and validity and reliability results of DREAM. A pilot study reported here shows that DREAM provided detailed information about hearing impaired children's language abilities and can be used to aid intervention planning to maximize progress. Conclusion: DREAM represents an example of translational science, transferring methods from empirical studies of language acquisition in research environments into applied domains such as assessment and intervention. Research on outcomes in China will advance significantly with the availability of evidence-based comprehensive language tests that measure a sufficient age range of skills, are normed on Mandarin speaking children in China's Mainland, and are designed to capture features central to Mandarin language acquisition.

关键词： Standardized language test Language development Outcome assessment Mandarin DREAM

Synthesis of reduced graphene oxide nanosheets from sugarcane dry leaves by two-stage pyrolysis for antibacterial activity

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Nano Materials Science 2024年第5期6卷 625-634页

作者： Baskar Thangaraj Pravin Raj Solomon Nutthapon Wongyao Mohamed I.Helal Ali Abdullah Sufian Abedrabbo Jamal Hassan Department of Physics Khalifa UniversityAbu Dhabi127788United Arab Emirates Molecular Epidemiological Diagnostic Research Facility Department of ImmunologySchool of Biological SciencesMadurai Kamaraj UniversityMadurai625021Tamil NaduIndia Fuel Cells and Hydrogen Research and Engineering Center Pilot Plant Development and Training InstituteKing Mongkut's University of Technology ThonburiBangkok10140Thailand CORE Lab Specialist Electron Microscopy Core LabsKhalifa UniversityAbu Dhabi127788United Arab Emirates

Oxidative-exfoliation methods were in vogue in the production of rGO from *** of such synthetic graphite needs high temperatures(2500℃).Thus,such process is not *** present study is made on the dry leaves of sugarcane(Saccharum officinarum)as an alternative raw material so as to be economical and environmentally *** dry leaves are subjected to two-step pyrolysis without any catalyst or reducing agent in far divergent temperatures to produce as prepared and acid treated *** were evaluated by UV–Vis.,FTIR,XRD,Raman spectroscopy,TGA/DTG,BET,FESEM-EDS and *** as prepared rGO has few layers with irregular and folded architecture whereas acid-treated rGO has thinly stacked crumpled sheets with many wrinkles on its *** prepared rGOs have multilayered graphitic structure due to the unique ratio between G and D *** treated rGO has poor thermal stability as compared to that of as-prepared rGO at high temperatures due to the variation in the oxygen-containing functional *** treated rGO has low antibacterial activity as compared to that of the as-prepared rGO due to the paucity of the functional groups.

关键词： Biomass wastes Sugarcane dry leaves Pyrolysis Reduced graphene oxide Antibacterial activity