Experiences with a Reverse Osmosis Pilot Plant for the Concentration of Potato Fruit Water in the Potato Starch Industry

Rüffer, H. M.; Kremser, Ulrich; Seekamp, M.

doi:10.1002/star.19970490906

Cited by 19 publications

(9 citation statements)

References 4 publications

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“…Following coagulation, remaining process waters were further concentrated using an evaporation step. Ruffer et al [34] did not investigate an additional membrane filtration step following coagulation, in contrast to earlier work by Meuser and Köhler [30]. Ruffer et al [34] tested an RO system for three months which had reliable performance.…”

Section: Potato Starch Processingmentioning

confidence: 68%

“…As a result, a wide range of process waters and wastewaters are created at a single facility; these process waters have a variety of nutrients and membrane filtration characteristics. Ruffer et al [34] studied this issue using a pilot scale RO filtration unit installed at a facility to filter a portion of process water, or potato fruit water (Fig. 2).…”

Section: Potato Starch Processingmentioning

confidence: 99%

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Front End to Backpipe: Membrane Technology in the Starch Processing Industry

Rausch

2002

Starch/Stärke

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The starch processing industry is characterized by streams that vary in diversity and complexity and that require extensive processing to achieve high end product quality. Water removal and product separations are two fundamental processing steps that impact product quality and processing economics. Many uses have been found for membrane technology in the starch processing industry; these include pretreatment of fresh water, recovery of solids and wastewater treatment. In many cases, membrane applications have increased quality of products, decreased energy costs and reduced disposal issues relating to waste treatment. Membranes can be used to filter many types of fluids in potato, wheat and corn starch isolation processes with varying degrees of success. Robust membrane materials have been developed with unique processing capabilities suited for the needs of the starch processing industry. Membranes have been used commercially to increase product quality while reducing costs, such as in syrup and sweetener clarification. Membrane technology has shown promise for reducing evaporation costs, improving product recovery and removing solids prior to wastewater treatment. In many applications, the cost of dewatering using membranes was a fraction of the cost of traditional methods. Membranes can be used to recover proteins from dilute process streams, but more work is needed regarding changes in nutrient quality when membranes are used in place of conventional separation technologies such as centrifugation, vacuum belt filtration and evaporation. There is need for detailed discussion of analyses regarding economics of long term operation and maintenance of membranes as part of a processing system.

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Section: Potato Starch Processingmentioning

confidence: 68%

Section: Potato Starch Processingmentioning

confidence: 99%

Front End to Backpipe: Membrane Technology in the Starch Processing Industry

Rausch

2002

Starch/Stärke

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“…For potato fruit water treatment, however, its pronounced tendency to foaming and fouling resulted in rejection of the proposed process [26][27][28]. Reverse osmosis (RO) was, to a certain extent, advantageous.…”

Section: Treatment Of De-proteinised Fruit Watermentioning

confidence: 99%

“…Reverse osmosis (RO) was, to a certain extent, advantageous. Reverse osmosis resulted in lower energy requirements in protein production, higher protein recovery and reduction of remaining fruit water used for agricultural irrigation [27]. Coming from the Westfalia process a sophisticated system has been developed for work-up of liquid wastes of potato starch production which uses RO equipped with tubular modules (total membrane area of 456 m 2 ) of the cellulose acetate type.…”

Section: Treatment Of De-proteinised Fruit Watermentioning

confidence: 99%

Potato Starch Technology

Bergthaller¹,

Witt²,

Goldau³

1999

Starch/Stärke

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A total of 7.0 × 10 6 and 7.3 × 10 6 t starch was produced in 1996 and 1997, respectively, in the European Union, consisting of 15 member states [1,2]. The trend of a steadily increasing starch production is obvious. During a long period, potato starch played an important role in covering approximately 25 % of the available shares; the situation changed in 1995 by the decision of the European Commission to limit subsidies connected with the production of potatoes and their utilisation in starch factories. The instrument used to limit costs became a quota system issued to each potato starch producing member country; in fact, 8 of the 15 member states. A maximum potato starch production has been fixed at approximately 1,864 × 10 3 t/a. The main share is covered by four member states: Germany (696.3 × 10 3 t), Netherlands (538.3 × 10 3 t), France (281.5 × 10 3 t) and Denmark (178.5 × 10 3 t). Smaller quotas (49 to 64 × 10 3 ) are held by Sweden, Finland and Austria, while Spain owns a quota of 2,000 t ( Fig. 1) [3]. Recent resolutions, in connection with the development of EU's Agenda 2000 system, resulted in further reduction of starch production limits by 100 × 10 3 t. The relevant decreases in production will be approx. 40 × 10 3 t for Germany and 31 × 10 3 t for The Netherlands as the main potato starch producing countries. As result of these regulations, potatoes will not be used increasingly as substrates of starch production. Maize and wheat will cover future growth, with more important prospects for wheat.Potato starch production encountered drastic changes during the last years, in particular in economics and substrate supply. Because of economically required reductions in subsidisation, production of potato starch will decrease. Changes in technology are characterised by savings in wash water and process water streams that are effected by increased efficiency introduced with new machinery and changed technological concepts. From an ecological point of view, an early and maximum fruit water separation (up to 95 %) based on dilution of gratings with process water and decanter separation allowed to reduce the fresh water supply to 0.4 to 0.5 m 3 /t of processed potatoes. For economical isolation of potato protein a correspondingly high protein recovery rate (up to 90 %) is essential. Concerning starch extraction, a minimum of 95 % is reached in modern potato starch plants, but optimum engineering (rasping, decanting, sieving) gives recovery rates of 97 to 98 %. In starch refinement, three-phase nozzle separators equipped with wash water supply and constructed for efficient displacement washing allow to achieve a fine fibre removal of 98 % within three separation stages and a final concentration of purified starch milk of 22 to 23°Bé. Potato protein isolates (protein content 83 to 85 %) are produced by isoelectric precipitation combined with heat coagulation while stringent solutions for treatment of de-proteinised fruit water are still lacking. * Publication No. 7075 of the Federal Centre for Cereal, Potato a...

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“…The industrial process for obtaining potato protein is through combining technologies like isoelectric precipitation at pH 4.8 and subsequent heat coagulation by steam injection and heat shock at 110-1208C (Bergthaller et al, 1999). Reverse osmosis is also used in potato industry as a cost cutting step prior to protein coagulation and evaporation of water leading to a more economical process as compared to evaporation alone (Kent, 2002;Rüffer et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Isolation of potato proteins using simulated moving bed technology

Andersson

Sahoo

Mattìasson

2008

Biotech & Bioengineering

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The simulated moving bed (SMB) concept of chromatography was applied to treat potato juice from production of starch. The aim was to harvest proteins. SMB offers possibilities to operate with different process strategies and in this study it was shown possible to harvest up to 80% of the protein in a process utilizing very little extra water besides that already present in the juice. After depleting protein from the juice in the adsorption step, the flow through was used to recondition the column after elution. The present study illustrates a new concept of applying chromatography as a capturing step of bulk products.

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Experiences with a Reverse Osmosis Pilot Plant for the Concentration of Potato Fruit Water in the Potato Starch Industry

Cited by 19 publications

References 4 publications

Front End to Backpipe: Membrane Technology in the Starch Processing Industry

Front End to Backpipe: Membrane Technology in the Starch Processing Industry

Potato Starch Technology

Isolation of potato proteins using simulated moving bed technology

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