Alongside Wadi Naam, a dusty Bedouin camp of 4, 000 people, a toxic wasteplant puffs away.
在一个容纳四千名贝都因人的聚居点中，环境肮脏不已，空气中弥漫着从一座废料厂发出的有毒气体。
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The process applies also to producting oxalic acid from other wasteplant fiber e. g, rice huck, rice straw and maize stalk etc.
此法也可用于其它废纤维植物，例如谷壳、稻草和玉米杆等生产草酸。
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"This means we potentially get about 200 litres of ethanol plus 80 to 90 kilograms of excess high-protein yeast per tonne of wasteplant material," says Philip Bell of Microbiogen.