Biological nitrogen elimination with simultaneous biological sulfide o... [premium content]
Cleaning tannery wastewater has never been a trivial task, especially for those leather manufacturers who directly discharge into surface waters. Because of the dramatic
savings in water consumption that have been achieved over recent decades by Bader, the wastewater is usually highly concentrated, especially with nitrogen compounds. However, a targeted denitrification process combined with simultaneous sulfide oxidation allows the company to eliminate the nitrogen compounds from the wastewater by at least 70% and at a reasonable cost.
World Leather - June/July 2012
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Sustainability through the leather production chain [premium content]
Sponsored by Clariant, this feature looks at the development of solutions that simplify the production of finished leather while limiting the burden on people, the environment and resources.
World Leather - Apr/May 2012
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High-fastness fatliquors from sustainable resources [premium content]
New fatliquors based on renewable raw materials have been developed that provide outstanding light and heat fastness performance together with excellent softening effects. This paper gives an overview of the chemistry of fatliquors, and compares the technical performance of these essential products on leather, with their environmental impact expressed as carbon footprint values.
World Leather - Apr/May 2012
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A new green leather [premium content]
As a result of close cooperation between N-Zyme BioTec and LGR, a tanning process has been developed and optimised on bovine hides using activated olive residues.
World Leather - Apr/May 2012
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Innovation. Part 4: Making the most of resources [premium content]
Twenty world-standard tanneries have opened their doors for in-depth study as part of the global Tannery of the Year Awards programme launched by the publishers of World Leather in 2009. In part four of this series we look at examples of innovation in practice, where tanners have addressed various issues by making the most of their resources.
World Leather - Apr/May 2012
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Carbon footprint – a new challenge for the leather industry [premium content]
A growing and ageing population, urbanisation, globalisation and climate protection – these will pose major challenges for all of us, and BASF and the wider chemical industry have solutions to manage these challenges.
World Leather - Feb/Mar 2012
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EasyWhite Tan leather: A tanning evolution [premium content]
This paper describes a new white tanning system from Clariant for leathers suitable for automotive, shoe upper and other classic leather types. The absence of common salt as normally used in the pickle stage has significant implications within clean technology and the wider environment.
World Leather - Feb/Mar 2011
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Carbon dioxide deliming of full thickness hides [premium content]
Minimising the chloride/ sulphate/ ammonium content from deliming
World Leather - Dec/Jan 2010
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Genuine lightweight leather: A new micro-sphere [premium content]
The largest source of green house gas emissions globally is through the combustion of fossil fuels such as coal, oil and gas in power plants, automobiles, industry etc. the USA is the world’s largest emitter of carbon dioxide(CO2) and, in 2006, petroleum supplied the
largest share of US domestic energy demands, accounting for an average of 47% of total
fossil-fuel-based energy consumption(1). The USA and China produced by far the largest
CO2 emissions in the world of 5,987.98 and 5,010.17 million tonnes in 2004 respectively(2).
There are about 800 million petroleum consuming cars in the world(3) which is expected
to continue to rise long term, beyond the current crisis. The USA and China are now the world’s biggest markets for such vehicles and there is seriously growing concern about sustainability.
World Leather - Feb/Mar 2009
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Collagen as a substrate for biomaterials: Part 2 [premium content]
Using biotechnology, it is possible to cut specific regions of the collagen molecule in order to solubilise collagen whilst, at the same time, retaining its helical nature. This new form of collagen can then be precipitated from solution, solubilised and moulded into any shape or form that may be required for medical purposes. This second part of the article follows on from Part 1, issued in World Leather August/September 2007.
World Leather - 08 - Dec/Jan 2007
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