Stricter environmental policies, increased energy prices and depletion of resources are forcing industries to look for bio-based and low carbon footprint products. For industries, flax is interesting resource since it is light, strong, environmental friendly and renewable. From flax plant to fiber products involves biochemical and mechanical processes. Moreover, production and processing costs have to compete with other products, like petroleum based materials. This research focusses on sustainable process improvement from flax plant to fiber production. Flax retting is a biological process at which mainly pectin is removed. Without retting, the desired fibre remains attached to the wooden core of the flax stem. As a result, the flax fibres cannot be gained, or have a lows quality. After retting, the fibers are released from the wooden core. Furthermore, machines have been introduced in the flax production process, but the best quality fibers are still produced manually. Due to the high labor intensity the process is too expensive and the process needs to be economical optimized. Since the retting process determines all other downstream processes, retting is the first step to focus on. Lab-scale experiments were performed to investigate the retting process. Factors that were researched were low cost processing conditions like, temperature, pH, dew retting and water retting. The retting rate was low, around three weeks for complete retting. The best retting conditions were at 20°C with water and any addition of chemicals. The process could be shortened to two weeks by recycling the water phase. In a scale-up experiment, a rotating drum was used at the optimal conditions from the lab-experiment (20°C and water). First the flax did not mix with the water content in the rotating drum. The flax was too rigid and did not tumble. Therefore, bundles of flax plants were used. The inner core of the bundle seemed to be protected and the retting rate was less compared to the flax on the surface of the flax bundle. This implies that mechanical impact increased retting in the rotating drum, however heterogeneous retting should be avoided. To overcome the heterogeneous retting problem, a water column was used to improve heterogeneous retting. Retting was performed in a water column and mixing was accomplished by bubbling air. As a result of the mixing, the flax bundle was retted homogenously. And after drying, it was possible to separate the fibers from the wooden flax core. Retting with a bubble column can overcome this problem and seems to be a usable retting process step. Water samples of the lab-scale experiments, the rotating drum and the bubble column showed a chemical oxygen demand (COD) content up to 4 g/L. Overall, 1 kg Flax resulted in 40 g COD. This indicates the possibility to produce biogas that can be used for generating heat and electricity, to make the process sustainable. Around 50% of the weight consists of wooden shives. The shives can be used for pyrolysis and it was possible to produce around 30% coal and 20% oil. These compounds can be used as building blocks, but also to generate heat and electricity. Heat and electricity can be used for the flax processing. Shives were only dried for 1 day at 105°C and slow pyrolysis was used. This indicates that a higher yield can be expected at fast pyrolysis. Overall, the reported implicates that quality fiber production from flax plant can be a feasible, sustainable and a renewable production process. Feasibility of the process can be obtained by, (1) retting at low-cost process conditions of 20°C and using water without any addition of chemicals, (2) with increased flax retting rate by recycling water, (3) with increased flax retting rate by introducing mixing forces, and the ability to lower the energy consumption of the overall process, (4) producing biogas from the COD with anaerobic digestion and (5) producing pyrolysis oil and pyrolysis c
MULTIFILE
Consumers currently place increasing importance on the values that companies represent. Modern values such as transparency, benevolence to society, sustainability and fairness are becoming more relevant, as noted by many major consulting firms among which are Nielsen (2013), the World Federation of Advertisers (2013) and the Boston Consultancy Group (2013). Modern values are grounded in social, political and economic developments and represent the new values of this era. As a consequence, a company’s value to consumers no longer has to lie solely in its products and services. This new, broader scope of value may include the entire business process and organizational culture, ranging from the management’s integrity to values being found in the company’s contributions to society. Although the role of values in human behaviour has been extensively discussed in the psychology literature since the beginning of the 1900s (e.g. Feather 1995; Hofstede 1980; Olson and Maio 2003; Rokeach 1973; Schwartz 2012), limited attention has been dedicated to values in marketing literature. This was the conclusion of a systematic literature review that we conducted on this subject (Voorn et al. 2016). As a follow-up, we organized an online survey (n = 1109) to empirically investigate the role of values in the brand selection process. In this paper, we report on the relationship between values and brand purchase intentions through the concept of value congruence and in relation to several product categories representing services, durables and consumables. Overall, the results confirm the relevance of value congruence as a predictor of brand purchase, in particular in services and durables. Our study shows that companies can benefit from incorporating values into their marketing strategies, especially those values that are congruent with (higher-order) personal goals, rather than more (instrumental) category-specific values. This offers new marketing perspectives, especially for brands. Brands are – by definition – more than just one product or service, which means they can serve as an umbrella for the incorporation and propagation of new values. However, an important question remains for the brand manager: the extent to which values have an advantage over brand personality traits and functional attributes, since investing in values is not only about communication – it means that an organization needs to embody them in the very fibre of its being; otherwise it may be perceived as ‘green washing’, which can undermine brand trust.
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Consumers currently place increasing importance on the values that companies represent. Modern values such as transparency, benevolence to society, sustainability and fairness are becoming more relevant, as noted by many major consulting firms among which are Nielsen (2013), the World Federation of Advertisers (2013) and the Boston Consultancy Group (2013). Modern values are grounded in social, political and economic developments and represent the new values of this era. As a consequence, a company’s value to consumers no longer has to lie solely in its products and services. This new, broader scope of value may include the entire business process and organizational culture, ranging from the management’s integrity to values being found in the company’s contributions to society. Although the role of values in human behaviour has been extensively discussed in the psychology literature since the beginning of the 1900s (e.g. Feather 1995; Hofstede 1980; Olson and Maio 2003; Rokeach 1973; Schwartz 2012), limited attention has been dedicated to values in marketing literature. This was the conclusion of a systematic literature review that we conducted on this subject (Voorn et al. 2016). As a follow-up, we organized an online survey (n = 1109) to empirically investigate the role of values in the brand selection process. In this paper, we report on the relationship between values and brand purchase intentions through the concept of value congruence and in relation to several product categories representing services, durables and consumables. Overall, the results confirm the relevance of value congruence as a predictor of brand purchase, in particular in services and durables. Our study shows that companies can benefit from incorporating values into their marketing strategies, especially those values that are congruent with (higher-order) personal goals, rather than more (instrumental) category-specific values. This offers new marketing perspectives, especially for brands. Brands are – by definition – more than just one product or service, which means they can serve as an umbrella for the incorporation and propagation of new values. However, an important question remains for the brand manager: the extent to which values have an advantage over brand personality traits and functional attributes, since investing in values is not only about communication – it means that an organization needs to embody them in the very fibre of its being; otherwise it may be perceived as ‘green washing’, which can undermine brand trust.
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The seaweed aquaculture sector, aimed at cultivation of macroalgal biomass to be converted into commercial applications, can be placed within a sustainable and circular economy framework. This bio-based sector has the potential to aid the European Union meet multiple EU Bioeconomy Strategy, EU Green Deal and Blue Growth Strategy objectives. Seaweeds play a crucial ecological role within the marine environment and provide several ecosystem services, from the take up of excess nutrients from surrounding seawater to oxygen production and potentially carbon sequestration. Sea lettuce, Ulva spp., is a green seaweed, growing wild in the Atlantic Ocean and North Sea. Sea lettuce has a high nutritional value and is a promising source for food, animal feed, cosmetics and more. Sea lettuce, when produced in controlled conditions like aquaculture, can supplement our diet with healthy and safe proteins, fibres and vitamins. However, at this moment, Sea lettuce is hardly exploited as resource because of its unfamiliarity but also lack of knowledge about its growth cycle, its interaction with microbiota and eventually, possible applications. Even, it is unknown which Ulva species are available for aquaculture (algaculture) and how these species can contribute to a sustainable aquaculture biomass production. The AQULVA project aims to investigate which Ulva species are available in the North Sea and Wadden Sea which can be utilised in onshore aquaculture production. Modern genomic, microbiomic and metabolomic profiling techniques alongside ecophysiological production research must reveal suitable Ulva selections with high nutritional value for sustainable onshore biomass production. Selected Ulva spp lines will be used for production of healthy and safe foods, anti-aging cosmetics and added value animal feed supplements for dairy farming. This applied research is in cooperation with a network of SME’s, Research Institutes and Universities of Applied Science and is liaised with EU initiatives like the EU-COST action “SeaWheat”.
The textile and clothing sector belongs to the world’s biggest economic activities. Producing textiles is highly energy-, water- and chemical-intensive and consequently the textile industry has a strong impact on environment and is regarded as the second greatest polluter of clean water. The European textile industry has taken significant steps taken in developing sustainable manufacturing processes and materials for example in water treatment and the development of biobased and recycled fibres. However, the large amount of harmful and toxic chemicals necessary, especially the synthetic colourants, i.e. the pigments and dyes used to colour the textile fibres and fabrics remains a serious concern. The limited range of alternative natural colourants that is available often fail the desired intensity and light stability and also are not provided at the affordable cost . The industrial partners and the branch organisations Modint and Contactgroep Textiel are actively searching for sustainable alternatives and have approached Avans to assist in the development of the colourants which led to the project Beauti-Fully Biobased Fibres project proposal. The objective of the Beauti-Fully Biobased Fibres project is to develop sustainable, renewable colourants with improved light fastness and colour intensity for colouration of (biobased) man-made textile fibres Avans University of Applied Science, Zuyd University of Applied Sciences, Wageningen University & Research, Maastricht University and representatives from the textile industry will actively collaborate in the project. Specific approaches have been identified which build on knowledge developed by the knowledge partners in earlier projects. These will now be used for designing sustainable, renewable colourants with the improved quality aspects of light fastness and intensity as required in the textile industry. The selected approaches include refining natural extracts, encapsulation and novel chemical modification of nano-particle surfaces with chromophores.
The textile and clothing sector belongs to the world’s biggest economic activities. Producing textiles is highly energy-, water- and chemical-intensive and consequently the textile industry has a strong impact on environment and is regarded as the second greatest polluter of clean water. The European textile industry has taken significant steps taken in developing sustainable manufacturing processes and materials for example in water treatment and the development of biobased and recycled fibres. However, the large amount of harmful and toxic chemicals necessary, especially the synthetic colourants, i.e. the pigments and dyes used to colour the textile fibres and fabrics remains a serious concern. The limited range of alternative natural colourants that is available often fail the desired intensity and light stability and also are not provided at the affordable cost . The industrial partners and the branch organisations Modint and Contactgroep Textiel are actively searching for sustainable alternatives and have approached Avans to assist in the development of the colourants which led to the project Beauti-Fully Biobased Fibres project proposal. The objective of the Beauti-Fully Biobased Fibres project is to develop sustainable, renewable colourants with improved light fastness and colour intensity for colouration of (biobased) man-made textile fibres Avans University of Applied Science, Zuyd University of Applied Sciences, Wageningen University & Research, Maastricht University and representatives from the textile industry will actively collaborate in the project. Specific approaches have been identified which build on knowledge developed by the knowledge partners in earlier projects. These will now be used for designing sustainable, renewable colourants with the improved quality aspects of light fastness and intensity as required in the textile industry. The selected approaches include refining natural extracts, encapsulation and novel chemical modification of nano-particle surfaces with chromophores.
