Goatskin preservation with plant oil: significant chloride reduction in tannery wastewater

Md Shahruk Nur-A-Tomal, Md Abul Hashem, Md Enamul Hasan Zahin, Md Lutful Hossain Pulok, Moumita Rani Das, Sadia Mim

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14 Citations (Scopus)

Abstract

Preservation of raw hide/skin is the prime technique to stop bacterial deterioration. Universally, salt curing is the most prevalent technique for hide/skin preservation. In this study, extracted oil from Aphanamixis polystachya seed was evaluated for the preservation of goatskin to reduce the chloride in tannery wastewater. The oil-induced goatskin preservation method was assessed observing diverse factors, e.g., hair slip, odor, moisture content, bacterial colony counting, total Kjeldahl nitrogen, and hydrothermal stability in evaluation to the conventional salt curing method. Results indicate that 15% oil-induced preservation technique could preserve the goatskin for 30 days. A small-scale experiment was performed for the preservation of goatskins. The preserved goatskins both monitoring and study samples were processed for shoe upper leather. The leather quality was evaluated by examining physical properties and fiber structure by a scanning electron microscope (SEM). Pollution load generated during leather making was determined in terms of total dissolved solids (TDS), chloride (Cl), chemical oxygen demand (COD), and biochemical oxygen demand (BOD). The proposed oil-induced preservation method reduced Cl, TDS, and BOD by 98.3%, 82.3%, and 86.8%, respectively, in the soaking liquor. The leather readied from the empirical goatskin shows the equipotential properties of leather from conventional goatskin. The oil-induced preservation method is substantiated to be favorable nonconventional preservation instead of conventional wet-salting for the contraction of pollution from soaking operation.

Original languageEnglish
Pages (from-to)12889-12897
Number of pages9
JournalEnvironmental Science and Pollution Research
Volume28
Issue number10
DOIs
Publication statusPublished - Mar 2021
Externally publishedYes

Keywords

  • Aphanamixis polystachya
  • Chemical oxygen demand
  • Leather
  • Salinity
  • Total dissolved solids

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