Avantha Group is an Indian business conglomerate in India chaired by Gautam Thapar. The US$ 4 billion company is one of India’s largest business conglomerates. Its businesses include power generation and distribution, power transmission and distribution equipment and services, paper and pulp, food processing, farming, forestry, chemicals, infrastructure, Information Technology and Information Technology Enabled Service , also referred to as business process outsourcing . Wikipedia.
Bhardwaj S.,Indian Institute of Technology Roorkee |
Bhardwaj N.K.,Avantha |
Negi Y.S.,Indian Institute of Technology Roorkee
Appita Journal | Year: 2017
This paper explores the effect of addition of cationic starch and chitosan separately and in combination on some of the important paper properties of mixed hardwood pulp. By adding cationic starch at 5 kg/t, the increase in strength properties was less than that obtained with the addition of chitosan at 0.5 kg/t, while both produced 17-18% ash. At that same ash level, the improvement in strength properties was further increased when both cationic starch and chitosan were used together as strength additives. The results conclude that chitosan is a better strength additive than cationic starch at the same ash level. FTIR analysis was also undertaken to explore the modifications that occurred in the paper after addition of cationic starch, chitosan, and other wet-end additives. The results showed increased hydrogen bonding occurred with the addition of chitosan. © 2017, Appita Inc. All rights reserved.
News Article | December 29, 2015
« Audi testing autonomous driverless transport systems at Ingolstadt plant | Main | Infiniti offering 3 versions of new QX30 premium crossover next year; all conventional powertrains » Chempolis Limited, a Finland-based biorefining technology corporation, has entered into partnership with India-based Avantha Group’s research wing—Avantha Centre for Industrial Research & Development (ACIRD)—on technology to produce ethanol from various agricultural residues for fuel blending. India’s agricultural sector produces large amounts of bagasse, cane trash, rice and wheat straw the disposal of which is an environmental problem. The partnership will help to deliver biorefining technology to India to convert biomass waste to clean sugars to be further converted to cellulosic ethanol and other bio-based chemicals. India has had a 5% ethanol blending target which has not been met, as ethanol derived from molasses costs more than gasoline (without taxes). India also does not permit ethanol imports. Nevertheless, the country just doubled its target of blending ethanol with gasoline to 10% in an effort to reduce pollution and to help money-losing sugar companies. Chempolis’ 3G formicobio technology is based on selective fractionation of biomass and co-production of multiple products; the technology is not just for the production of biofuels (e.g. ethanol), but the produced sugars and lignin can be used as a platform into a number of different products. formicobio technology fractionates all the main components present in lignocellulose into cellulose, hemicelluloses, and lignin. The selectivity of the process enables the application of optimized processes for each fraction. formicobio is based on the use of a novel sulfur-free biosolvent, which enables the biosolvent and water circulation within the process to be fully closed, preventing the generation of waste. Chempolis has entered into other ethanol partnership agreements in India over the past few years: with Numaligarh Refinery Limited (earlier post); with NRL (earlier post); and with ONGC (earlier post) for example. Avantha Group is one of India’s leading business conglomerates. The Group has business interests in diverse areas, including pulp and paper, power transmission and distribution equipment and services, food processing, farm forestry, chemicals, energy, infrastructure, information technology (IT) and IT-enabled services.
Kumar A.,Indian Institute of Technology Roorkee |
Negi Y.S.,Indian Institute of Technology Roorkee |
Choudhary V.,Indian Institute of Technology Delhi |
Cellulose | Year: 2014
In this study, in situ synthesis of polyvinyl alcohol (PVA)/nano-hydroxyapatite (n-HA)/cellulose nanocrystals (CNC) organic-inorganic biocomposite porous scaffolds is reported. The effect of the CNC content on the properties of the biocomposite scaffold was investigated and characterized using field-emission scanning electron microscopy, Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) analysis, porosity and compressive strength measurements, thermal studies, and in vitro biomineralization and degradation studies. The morphological study showed highly porous structures with good pore interconnectivity in which n-HA was homogeneously dispersed. XRD analysis showed a decrease in the crystalline fraction and crystallite size of nano-hydroxyapatite with introduction of PVA and with increasing content of CNC. It was observed that the porosity decreased to some extent with increasing CNC content, while increases in the compressive strength (from 0.85 to 2.09 MPa) and elastic modulus (from 4.68 to 16.01 MPa) were found as the CNC content was increased. In vitro biomineralization study revealed the formation of apatite on PVA/n-HA/CNC biocomposite scaffolds when soaked for 7 and 14 days in simulated body fluid (SBF) solution. The obtained porous scaffolds offering good mechanical performance may provide a promising alternative scaffolding matrix for use in the field of bone tissue engineering. © 2014 Springer Science+Business Media Dordrecht.
Chauhan V.S.,Avantha |
Arabian Journal of Chemistry | Year: 2015
Preflocculation of inorganic fillers added to the paper could improve the inter-fiber bonding and enhance paper strength. Selection of a suitable flocculant and flocculating conditions for improved efficacy of the process is highly desired. The flocculating process conditions such as stirring speed, concentration of filler suspension and retention time were optimized through image analysis of the filler flocs when using cationic starch as flocculant. Two carbohydrate polymers, cationic and amphoteric starch, were used at 0.1%, 0.4% and 0.8% doses for the preflocculation of talc filler under optimized conditions. The colloidal charge and particle size distribution of the native and preflocculated fillers were analyzed. The native and preflocculated fillers were added to bleached mixed hardwood kraft pulp for preparing laboratory handsheets of 60g/m2 targeting varying ash levels of 15-24%. Various paper properties such as tensile, burst, tear indices, light scattering coefficient, Cobb60 and contact angle were analyzed for the native as well as preflocculated fillers. The median particle size of native filler was 6.0μm which on preflocculation using 0.8% dosage of cationic and amphoteric starch increased to 12.0μm and 14.8μm i.e. 100% and 146% increase in particle size, respectively. The preflocculated filler increased the physical and hydrophobic properties of the sheets as compared with the native filler. The increase in tensile index was about 20% when filler was preflocculated using 0.8% dose of amphoteric starch. © 2015 The Authors.
Pathak P.,Indian Institute of Technology Roorkee |
Pathak P.,Avantha |
Bhardwaj N.K.,Avantha |
Singh A.K.,Indian Institute of Technology Roorkee
Applied Biochemistry and Biotechnology | Year: 2014
This paper implies production of cellulase and xylanase enzyme using a potent strain of Trichoderma harzianum for the efficient deinking of photocopier waste papers. Different nutritional and environmental factors were optimized for higher production of cellulase along with xylanase. After fermentation, maximum enzyme extraction was achieved from fermented matter using a three-step extraction process with increased efficiency by 26.6-29.3 % over single-step extraction. Static solid state was found as the best fermentation type using wheat bran (WB) as carbon source and ammonium ferrous sulfate (0.02 M) as nitrogen source. Subsequently, inoculum size (8×106 CFU/gds), incubation days (4 days), temperature (34°C), initial pH (6.0), and moisture ratio (1:3) significantly affected the enzyme production. Cellulase and xylanase activities were found to be maximum at pH 5.5 and temperature 55-60°C with good stability (even up to 6 h). Furthermore, this crude enzyme was evaluated for the deinking of photocopier waste papers without affecting the strength properties with improved drainage as an additional advantage. The crude enzyme-deinked pulp showed 23.6 % higher deinking efficiency and 3.2 % higher brightness than chemically deinked pulp. Strength properties like tensile, burst indices, and folding endurance were also observed to improve by 6.7, 13.4, and 10.3 %, respectively, for enzyme-deinked pulp. However, the tear index was decreased by 10.5 %. The freeness of the pulp was also increased by 21.6 % with reduced drainage time by 13.9 %. © 2014 Springer Science+Business Media.
Chauhan V.S.,Indian Institute of Technology Roorkee |
Tappi Journal | Year: 2014
Mineral fillers are added during papermaking to improve the optical and printing properties of paper and decrease energy costs. Filler loading using conventional approaches has some disadvantages, such as reduction in paper strength. The finer filler, the more the strength loss. Several methods and materials have been reported to overcome or alleviate the same, but with higher costs. Our approach provides an economically viable solution to the problem, using conventional papermaking materials. Talc filler of different particle sizes, preflocculated using different doses of cooked amphoteric starch, were used for papermaking. Relatively higher filler retention, paper strength, and hydrophobicity of paper were obtained with preflocculated talc compared to native talc. The optical properties of paper were unchanged on the loading of similar talc after preflocculation. The preflocculated talc of finer particle size provided higher opacity at similar ash, as well as paper strength, than the native talc of coarser size.
Chauhan V.S.,Avantha |
Industrial and Engineering Chemistry Research | Year: 2014
Inorganic fillers, the second largest component of the papermaking process, have poor bondability with cellulosic fibers, interfere in interfiber bonding, and reduce paper strength. Filler preflocculation/modification is a practical method for enhancing interactions between the filler particles and fibers. This article reports on the effects of filler content and preflocculation on the filler bondability factor calculated based on first-pass ash retention and paper strength properties such as the tensile, Z-direction tensile, and composite tensile indexes. Talc filler preflocculated using 0.1-0.8% dosages of cooked cationic starch based on the dry weight of filler was loaded in paper to obtain varying filler contents of 15-24%. The filler bondability factor (FBF) and various tensile properties of paper were calculated and analyzed for all experiments. FBF and paper strength were reduced with increasing filler content in paper, whereas they were improved upon addition of preflocculated filler in paper. Noticeably, preflocculated filler resulted in increases in FBF and composite tensile index of 13-24% and 7-15%, respectively, at a 24% filler content in paper. © 2014 American Chemical Society.
News Article | December 29, 2015
« Chempolis partners with Avantha Group on cellulosic ethanol in India | Main | $10-Trillion Investment Needed To Avoid Massive Oil Price Spike Says OPEC » Infiniti will offer three versions of its all-new QX30 premium active crossover for the United States and Canada next year. The QX30 line for the US and Canada is powered by a 208 hp, 2.0-liter turbocharged 4-cylinder mated to a 7-speed dual clutch automatic transmission, and is scheduled to go on sale in the US and Canada in mid-2016 and in Mexico and Latin America in the second half of 2016. Each version will have its own front and rear fascia, wheel design and interior themes: QX30: This version is sold in Europe and other regions outside of the Americas under the Q30 name. In the Americas, this model will be front-wheel drive. QX30S: With a lower stance, aggressive front and rear fascia, cross-drilled front brake rotors, 19-inch wheels and performance tires, the QX30S is the sports version of Infiniti’s new premium compact line. It was shown at this year’s Los Angeles Auto Show and is sold in other markets as the Q30S. QX30 AWD: With an intelligent all-wheel drive system, slightly higher ride height and off-road inspired front and rear valence panels, the vehicle is able to take on urban, suburban and winding rural roads in all driving conditions. The QX30 AWD debuted at the Los Angeles Auto Show as the QX30. Infiniti said the QX30 is targeting a new generation of premium buyers. The premium crossover segment is currently among the fastest-expanding markets globally, and Generations X and Y will represent the majority of buyers in this segment by 2020. Depending on market, there will be a choice between diesel and gasoline engines for QX30 buyers.
News Article | December 29, 2015
« China researchers optimize parameters for direct bacterial production of H2 from raw corn stalk without substrate pretreatment | Main | Chempolis partners with Avantha Group on cellulosic ethanol in India » Earlier this month, Audi began testing driverless transport systems (DTS) at its Ingolstadt plant. With DTS, logistics employees no longer have to fetch the required goods from the material shelves; the goods will come to them fully automatically. Audi says it is the first automobile manufacturer to implement such a DTS-based goods-to-person concept. Driverless transport systems drive under the shelves, lift them up and transport them automatically to a central picking station. There, symbols on a monitor show the employees which goods they have to put into which place. Unlike the previous person‑to‑goods commissioning, a DTS does not need wide lanes and picking bays, so the shelves can be positioned much closer together. That reduces space requirements by 25%. A fleet-management system coordinates the carries so that they always arrive at the commissioners’ workplaces punctually. Employees never have to wait for their goods—a shelf change at the picking station takes just four seconds. The robots receive the order to bring a shelf for commissioning by Wi‑Fi. When in motion, they orient themselves by means of QR codes on the floor, which are read by a camera installed under the DTS. The autonomous transport systems move in a separate area from where the employees work. The goods‑to‑person principle eliminates not only long working times in the picking bays, but also long walking distances and the pushing of heavily loaded material carts. If components change or new ones are added, this can be quickly integrated. The autonomous transport systems are equipped with eight rechargeable batteries with a running time of approximately seven hours. When their charge status has fallen to 40%, they automatically return to their charging stations. There, they are recharged for two hours via induction plates in the floor, and then automatically return to work in the transporting shelves. When charged, the robots accelerate to a speed of 3.6 km/h (2.2 mph), irrespective of the weight of the material carried. They can transport a maximum of 600 kilograms. The commissioning of the owner’s manuals for the Audi A3 models is the first task for which the new supermarket concept is being tested. Next year, additional commissioning stations at Audi will take over the goods‑to‑person principle.