Abstract
Synthetic dye liquid waste is a problem in the batik industry. The data showed that there are 5 rivers in Pekalongan which are dark coloured and stinks due to the batik industry’s liquid waste. The test result showed that the waste in upstream contains Chemical Oxygen Demand (COD) 230 mg/L and 157 mg/L in downstream, while the maximum COD treshold should only be 50 mg/L. Environmentally friendly colouring technology is currently needed in the business. Natural dyes can be an alternative to produce batik. Weeds or parasites are considered an alternative to natural dyes. Weeds are plants which the existence is not wanted by humans. This research was conducted by experimenting the application of extraction of weeds or parasites on batik fabric. The objectives of this study were, the direction of colour produced by weeds or parasites through the extraction process, and analysis of the colour lasting test.
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