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A wheat and hemp lignin, obtained from a soda pulping-precipitation process, was carbonized at 800°C under N2 atmosphere. The resulting carbon material was thermally activated under oxidative atmosphere at four different temperatures (150, 200, 300 and 350°C). The materials prepared at higher activation temperatures (300 and 350°C) have proven their potential in the elimination of 4-nitrophenol (4-NP)...
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