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Browsing by Author "Chunilall, Viren"

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Acid bi-sulphite pulping effects on hardwoods and a softwood revealed by atomic force microscopy

Author: Chunilall, Viren ; Wesley-Smith, J ; Bush, T Date: Dec 2009 Wood fibres are the raw material used in the production of dissolving pulp for the manufacture of cellulose derivatives such as viscose and cellulose acetate. At the microscopic level, the wood cell wall is organised in layers with different ... Read more
Biowaste biorefineries in South Africa: Current status, opportunities, and research and development needs

Author: Sekoa, Patrick T ; Chunilall, Viren ; Msele, K ; Buthelezi, L ; Johakimu, Jonas ; Andrew, Jerome E ; Zungu, M ; Moloantoa, K ; Maningi, N ; Habimana, O ; Swartbooi, Ashton M Date: Dec 2023 As one of the highest carbon-emitting nations, South Africa is working tirelessly to swiftly transition to sustainable technologies in order to strengthen its green economy initiatives. Amongst the technologies that are explored in the ... Read more
Cellulose fibril aggregation studies of Eucalyptus dissolving pulps using atomic force microscopy

Author: Chunilall, Viren ; Wesley-Smith, J ; Bush, T Date: Nov 2006 Dissolving pulp is the end-product of acid-bisulphite pulping and bleaching processes, during which almost all non-cellulosic wood components are removed to produce dissolving pulp with final a cellulose purity of up to 96%. Dissolving pulp ... Read more
Cellulose fibril aggregation studies of eucalyptus dissolving pulps using atomic force microscopy

Author: Chunilall, Viren ; Wesley-Smith, J ; Bush, T Date: Nov 2006 The work presented will report on the use of AFM to study the CFA characteristics of dissolving pulp of a clone of Eucalyptus grown in compartments with contrasting growth rates (low and high), at different stages of the pulping process (solid ... Read more
Creating value from acidogenic biohydrogen fermentation effluents: An innovative approach for a circular bioeconomy that is acquired via a microbial biorefinery-based framework

Author: Sekoai, Patrick T ; Chunilall, Viren ; Ezeokoli, O Date: Jun 2023 As a response to the environmental and societal issues that emanate from the high reliance on fossil fuels, the world is now transitioning toward a circular bioeconomy. Acidogenic biohydrogen production is envisaged as a clean fuel of the ... Read more
Elucidating the role of biofilm-forming microbial communities in fermentative biohydrogen process: An overview

Author: Sekoai, Patrick T ; Chunilall, Viren ; Sithole, Bishop B ; Habimana, O ; Ndlovu, S ; Ezeokoli, OT ; Sharma, P ; Yoro, KO Date: Sep 2022 Amongst the biofuels described in the literature, biohydrogen has gained heightened attention over the past decade due to its remarkable properties. Biohydrogen is a renewable form of H2 that can be produced under ambient conditions and at a ... Read more
Investigating the lignocellulosic composition during delignification using confocal raman spectroscopy, cross-polarization magic angle spinning carbon 13 - nuclear magnetic resonance (CP/MAS 13C- NMR) spectroscopy and atomic force microscopy

Author: Chunilall, Viren ; Bush, T ; Erasmus, RM Date: Mar 2012 The changes in lignocellulosic composition of four hardwoods, i.e. Eucalyptus grandis camaldulensis (E. gc), E. grandis urophylla (E. gu), E. dunnii and E. nitens during different delignification processes were investigated using confocal ... Read more
Recent advances in recycling technologies for waste textile fabrics: A review

Author: Baloyi, R ; Gbadeyan, OJ ; Sithole, B ; Chunilall, Viren Date: Nov 2023 The fast fashion trends in the textile industry have resulted in high consumption of fiber with concomitant generation of waste. Awareness of environmental pollution resulting from textile production and disposal has increased significantly. ... Read more
Structural and morphological characterization of cellulose pulp

Author: Ocwelwang, A ; Sithole, Bishop B ; Ramjugernath, D ; Chunilall, Viren Date: Sep 2015 Understanding the structure of cellulose is of utmost importance in order to enhance its accessibility and reactivity to chemical processing. Therefore, the aim of this study was to evaluate the effect of ultrasound pretreatment on the structure ... Read more
Supra-molecular structure and chemical reactivity of cellulose I studied using CP/MAS (sup)13 C-NMR

Author: Chunilall, Viren ; Bush, T ; Larsson, PT Date: Aug 2013 In chemical pulping the components that keep wood cells together, mainly lignin are degraded and dissolved in order to obtain fibres for the dissolving pulp and paper processes. The aqueous solutions of pulping chemicals are transferred from ... Read more
Valorisation of avocado seeds: extraction and characterisation of starch for textile applications

Author: Tesfaye, Tamrat ; Gibril, M ; Sithole, Bishop B ; Ramjugernath, D ; Chavan, R ; Chunilall, Viren ; Gounden, Navandran Date: 2018 Sustainable disposal of the waste is problematic due to increasing shortages of landfill space. Avocado is a common fruit that is widely consumed in many countries. This consumption results in large quantities of avocado waste being generated ... Read more

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Browsing by Author "Chunilall, Viren"

Browsing by Author "Chunilall, Viren"

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All of ResearchSpace

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