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Ammonium-free deliming technology is becoming popular in the leather industry because conventional deliming with ammonium salts results in high ammonia-nitrogen (NH 3 –N) concentration of tannery wastewater. However, existing ammonium-free deliming agents have inadequate buffering capacity and slow penetration rate in limed pelt. In this study, glycine with pK a of –NH 3+ = 9.6 was used to delime...
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