Fig. 3From: Comparative environmental impact evaluation using life cycle assessment approach: a case study of integrated membrane-filtration system for the treatment of aerobically-digested palm oil mill effluentDistribution of life cycle impact categories contributed by a Combination I of integrated membrane-filtration system, b Combination II of integrated membrane-filtration system, c Combination III of integrated membrane-filtration system, d Combination IV of integrated membrane-filtration systemBack to article page