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Production of Biodiesel Using Heterogeneous Catalyst and Super Critical Fluid Extraction

Thesis Info

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Author

Bahadar, Ali

Program

PhD

Institute

National University of Sciences & Technology

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2014

Thesis Completion Status

Completed

Subject

Applied Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/2475/1/2561S.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727024831

Similar


Biodiesel is the only possible reciprocal to petro diesel and a boon to the fast depleting fossil fuel resources. Biofuel is produced from different feedstock including Algae, seeds of some terrestrial plants like Jatropha curcas, pongamia, castor, palm and oily wastes. The thesis addresses the multi-dimensional areas associated with the biodiesel production processes, covering the entire scope from seed based to non-terrestrial microalgae feedstock cultivation, extraction and its efficient conversion into liquid fuels. Design and development of efficient screw press expeller for oil expression from jatropha curcas seeds was the first investigation. This study is aimed to make efficient screw expeller to cater massive Jatropha biomass and its oil extraction. Experimental validation of the simulation is used to improve oil expeller for Jatropha seed by fabricating the expeller following the design and analysis by ANSYS FLUENT codes. An oil yield in excess of 98%, as compared to a maximum 75% for existing screw expellers, was achieved in practical runs which is very promising. An innovative airlift tubular photobioreactor was developed for growing algae in simulated conditions. Algal strain Chlorella sp was inoculated in photobioreactor which was sparged with air and carbon dioxide. The novel photobioreactor recorded a maximum experimental average yield of 0.65 g/L.day (13.3 g/m2.day) as compared to theoretical modeled yield of 0.82 g/L.day (14.26 g/m2.day), suggesting the device can be efficiently and cost-effectively employed in the production of algal biomass for biofuels. Supercritical Carbon dioxide (SC-CO2) fluid extraction (SCFE) was carried out to extract oil from Jatropha Curcas L. and microalgae (Chlorella Vulgaris) for biofuel production. The extraction was performed at temperature ranges of 40-80 oC and pressure of 4000-9000 psi in-order to investigate the optimum process parameters for Jatropha Curcas and microalgae biomass. The optimum yield for Jatropha was found to be 30.6 wt% and for microalgae it was 17.7 wt% (based on total oil contents present in the biomass) which was in close agreement with the time consuming traditional n-hexane based solvent extraction. The algal oil was then transesterified into biodiesel using nano-photo heterogeneous catalyst. The biodiesel produced using photosensitive catalyst was then characterized by using analytical techniques like GCMS and NMR and results are discussed. The physical properties of biodiesel are also analyzed according to ASTM standards.
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مولانامحمد علی جوہرؔ

مولانا محمد علی
ماتم یہ زمانہ میں بپا ’’تیرے‘‘ لیے ہے
مولانا محمد علی نے ۱۴؍ شعبان ۱۳۴۹؁ھ مطابق ۴؍ جنوری ۱۹۳۱؁ء کو تریپن ۵۳ برس کی عمر میں لندن میں وفات پائی، اس مسافر نے غالبؔ کے اس مصرع کو اپنے شعر میں دہرا کر اپنی مسافرانہ موت کی آپ پیش گوئی کی تھی۔
مارا دیارِ غیر میں مجھ کو وطن سے دور
افسوس وہ پر درد آواز جو ۱۹۱۱؁ء سے ۱۹۳۰؁ء تک ہندوستان اور دنیائے اسلام کے ہر قیامت آفرین سانحہ میں صدائے صور بن کر بلند ہوتی رہی، ہمیشہ کے لیے خاموش ہوگئی، وہ بیقرار دل جو اسلام اور مسلمانوں کی ہر مصیبت کے وقت بیتاب ہوجاتا تھا، اور اوروں کو بیتاب کرتا تھا، دریغا کہ قیامت تک کے لیے ساکن ہوگیا، وہ اشک آلود آنکھیں جو دین و ملت کے ہر ماتم میں آنسوؤں کا دریا بن جاتی تھیں، حسرتاکہ ان کی روانی ہمیشہ کے لیے بند ہوگئی، وہ مترنم لب جوہر بزم میں خوشنوا بلبل بن کر چہکتے تھے، ان کے ترانے اب ہمارے کان نہ سنیں گے، وہ آتشیں زبان جو ہر رزم میں تیغ برّاں بن کر چمکتی تھی اس کی تابش اب کسی معرکہ میں ہماری آنکھوں کو نظر نہ آئے گی، وہ پرجوش سینہ جو ہمارے مصائب کے پہاڑوں کو سیلاب بن کر بہالے جاتا تھا، اس کا تلاطم ہمیشہ کے لیے تھم گیا، وہ پرزوردست و بازو جو شب و روز کی خدمت گذاری اور نبرد آزمائی میں مصروف تھے، وہ اب ایسے تھکے کہ پھر نہ اٹھیں گے، اور افسوس کہ شکست خوردہ فوج کا وہ آخری سپاہی جو اعدا کے نرغہ میں تنہا لڑرہا تھا، آخر زخموں سے چور ہوکر ایسا گرا کہ پھر کھڑا نہ ہوگا، الوداع! محمدعلی! الوداع! والسلامَ الیٰ یوم القیام۔
تو ملت کا عزادار تھا، حق ہے کہ ساری ملت تیری...

بیع سلم میں تلفیق بین المذاہب کی فعالیت: هيئة المحاسبة کے فتاوی کا تحقیقی جائزہ

To juxtapose various components in one issue or various issues, and to adopt various jurists’ points of views is called “Talfiq.” In the present radical age of science and technology, each and every social faculty is being radicalized particularly in finance; there are certain complications in the monetary systems of various countries. In this scenario, to concentrate on one school of thought and deduce the solution of these financial issues has now become impossible. That is why, Majlis-e-Shar’ii concentrate on “Talfiq between different school of thoughts”, where various parallel issues are solved. The Majlis has prepared a sharia standard where practicable and beneficial financial issues are elaborated. The jurists have elaborated various principles of “Bae-e-Salam”, and presented various relevant issues taking the insight from various scholars of Maliki, Hanafi, Shafi and Hambli schools of thoughts and focused on “Talfiq”. The present research paper the decrees related to Talfiq will be explored, where the jurists have adopted it. Whether it is allowed or prohibited. If it is allowed, to what extent?

Inheritance Pattern of Drought Tolerance Attributes in Cotton Gossypium Hirsutum L.

Experiments were conducted during the crop season 2005-06 to evaluate cotton germplasm under irrigated and drought regimes. The germplasm was evaluated for different physiological and morphological traits. The accessions showing higher cotton yield were used as a criterion for selection of drought tolerant and susceptible parents. Three susceptible and three tolerant parents were planted during cotton growing season and crossed on flowering stage. The hybrids were evaluated at seedling and mature plant stage during the crop season 2006-07 under irrigated and drought regimes. All traits under study were subjected to analyses of variance. Traits showing significant genotypic variation were analyzed following simple additive dominance model to estimate heritability and inheritance pattern. The objective of study is to explore genes having potential for high yield and fiber quality under drought environments in genetic material available by crossing the genotypes in diallel fashion that may be used in future breeding program. Gene action and combining ability were studied by analyzing diallel cross data between six cotton varieties viz., FH-113, PB-899, MNH-789, (drought tolerant), and CIM-506, FH-901, CRIS-466, (drought susceptible). A considerable reduction in almost all parameters was shown under stress conditions. Diallel analysis showed that characters like monopodial branches, sympodial branches and staple strength showed additive genetic effects and traits like plant height, number of bolls, boll weight, yield., staple length, staple fineness, GOT, seed index, lint index, relative water content, leaf temperature and relative cell injury showed additive and dominant genetic effects under normal conditions and water stress conditions, traits like staple strength and relative cell injury showed additive genetic effects and traits like plant height, monopodial branches, sympodial branches, number of bolls, boll weight, yield, staple length, staple fineness, GOT, seed index, lint index, relative water content, leaf temperature showed additive and dominant (non-additive) genetic effects. PB-899 proved the best general combiner for traits like plant height and staple length, FH-113 proved the best general combiner for traits like monopodial branches, sympodial branches, number of bolls, yield , seed index, relative water content, leaf temperature and relative cell injury, MNH-789 proved the best general combiner for traits like boll weight, GOT and CIM-506 proved the best general combiner for staple fineness, staple strength and lint index under normal and water stress conditions. Heritability estimates for yield and yield related traits and most of traits were high under normal and water stress conditions and had maximum ability to transfer genes to the next generation. So, selection of desirable parents and gene combinations for high yield on the basis of these traits under both conditions will be effective for future breeding programs. Breeders may utilize good general combiners in breeding programs for improvements of cotton traits. It is recommended that breeders should breed for superior combining ability aimed at improving overall GCA for yield and fiber quality. xviAbstract Experiments were conducted during the crop season 2005-06 to evaluate cotton germplasm under irrigated and drought regimes. The germplasm was evaluated for different physiological and morphological traits. The accessions showing higher cotton yield were used as a criterion for selection of drought tolerant and susceptible parents. Three susceptible and three tolerant parents were planted during cotton growing season and crossed on flowering stage. The hybrids were evaluated at seedling and mature plant stage during the crop season 2006-07 under irrigated and drought regimes. All traits under study were subjected to analyses of variance. Traits showing significant genotypic variation were analyzed following simple additive dominance model to estimate heritability and inheritance pattern. The objective of study is to explore genes having potential for high yield and fiber quality under drought environments in genetic material available by crossing the genotypes in diallel fashion that may be used in future breeding program. Gene action and combining ability were studied by analyzing diallel cross data between six cotton varieties viz., FH-113, PB-899, MNH-789, (drought tolerant), and CIM-506, FH-901, CRIS-466, (drought susceptible). A considerable reduction in almost all parameters was shown under stress conditions. Diallel analysis showed that characters like monopodial branches, sympodial branches and staple strength showed additive genetic effects and traits like plant height, number of bolls, boll weight, yield., staple length, staple fineness, GOT, seed index, lint index, relative water content, leaf temperature and relative cell injury showed additive and dominant genetic effects under normal conditions and water stress conditions, traits like staple strength and relative cell injury showed additive genetic effects and traits like plant height, monopodial branches, sympodial branches, number of bolls, boll weight, yield, staple length, staple fineness, GOT, seed index, lint index, relative water content, leaf temperature showed additive and dominant (non-additive) genetic effects. PB-899 proved the best general combiner for traits like plant height and staple length, FH-113 proved the best general combiner for traits like monopodial branches, sympodial branches, number of bolls, yield , seed index, relative water content, leaf temperature and relative cell injury, MNH-789 proved the best general combiner for traits like boll weight, GOT and CIM-506 proved the best general combiner for staple fineness, staple strength and lint index under normal and water stress conditions. Heritability estimates for yield and yield related traits and most of traits were high under normal and water stress conditions and had maximum ability to transfer genes to the next generation. So, selection of desirable parents and gene combinations for high yield on the basis of these traits under both conditions will be effective for future breeding programs. Breeders may utilize good general combiners in breeding programs for improvements of cotton traits. It is recommended that breeders should breed for superior combining ability aimed at improving overall GCA for yield and fiber quality.