Study on Clean Leather Deliming Process with Sulfonated Phthalic Magnesium Salt

Qiang, Xi; Tang, Xiao Jin; Zhang, Hui

doi:10.4028/www.scientific.net/amr.393-395.308

Cited by 5 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The synthesis of sulfonated phthalic magnesium salt and its efficacy in deliming process were studied. 19 The presence of free sulfuric was one of the major limitations. Considerable attempts were made to use CO 2 in different forms such as gas, 20 solid, 13 and high pressure carbon dioxide 21,22 for the deliming process, and it was found to be environmentally sustainable.…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Application of GSK’s Model in Leather Making: Quantification of the Environmental Efficiency of a Green Solvent Based Deliming Process

Sathish

Thaikaivelan

Rao

2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

GlaxoSmithKline's solvents ranking model (GSK's SRM) was successfully applied to quantify the environmental efficiency of the cyclic carbonate based alkali neutralization process in leather making. Currently, cyclic carbonates have found interest within the green chemistry fraternity because of their availability, low toxicity, and biodegradability. An attempt has been made for the first time to use propylene carbonate (PC), as an alkali neutralizing agent (deliming agent) in leather making that completely avoided the generation of toxic ammonia gas. It is optimized that 1.5 and 2.5% w/w of PC is required to completely neutralize the alkali (calcium hydroxide) present in the goatskin and cow hide, respectively. Furthermore, the neutralization process obeys pseudo second order kinetics (R 2 : 0.999, k 2 : 3.72 x10 −3 g/ mg•min, h: 1.97 g/mg•min) and the rate of neutralization is faster than conventional ammonium salt based process (R 2 , 0.996; k 2 , 1.25 × 10 −3 g/mg•min; h, 0.79 g/mg•min). We demonstrate that the in situ formation calcium carbonate improves the dimensional stability and other organoleptic properties without affecting the chromium/dye diffusion. Besides this, the developed process enjoys 76.3, 92, and 96% reduction in total dissolved solids (TDS), total Kjeldahl nitrogen (TKN), and chloride content in wastewater, respectively. The environmental efficiency index (EEI) value of PC-based neutralization (EEI: 27.44) is 1.5 times higher than that for the conventional ammonium salt based system (EEI: 17.93). The study sheds light on the use of semiquantitative EEI in several industrial applications including leather for moving toward environmental sustainability packed with green chemistry principles.

show abstract

Section: ■ Introductionmentioning

confidence: 99%

“…Besides this, the interference of the magnesium ion the in dyeing process resulted in inferior quality leathers. The synthesis of sulfonated phthalic magnesium salt and its efficacy in deliming process were studied . The presence of free sulfuric was one of the major limitations.…”

Section: Introductionmentioning

confidence: 99%

Application of GSK’s Model in Leather Making: Quantification of the Environmental Efficiency of a Green Solvent Based Deliming Process

Sathish

Thaikaivelan

Rao

2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…There is another method that is possible to be applied, i.e., the substitution of ammonium sulfate. Some chemicals are able to be used as substitutions of ammonium sulfate, i.e., sodium hexametaphosphate, boric acid (Zeng et al, 2011;Wang et al, 2013), glycine (Lei et al, 2019), glycolic acid, EDTA (Uddin et al, 2018), acetic acid, boric acid, citric acid (Colak & Kilic 2007;Sui et al, 2012), dry ice (Sathish et al, 2013), sulfonated phthalic magnesium salt (Qiang et al, 2012), sodium gluconate (Zeng et al, 2018), and paracetic acid (Sirvaityte et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Free Ammonia Deliming: Effect of Tartaric Acid Addition as a Deliming Agent on The Quality of Wet Blue and Wastewater

Nugraha

Suparno

Indrasti

et al. 2020

Trop. Anim. Sci. J.

View full text Add to dashboard Cite

The objective of this study was to evaluate the pelt and wastewater characteristics after deliming process in an acid condition by tartaric acid, also wet blue properties that were formed. Various observed variables were the dose of tartaric acid, pelt thickness, calcium content, physical and chemical properties of wet blue, such as tensile strength, tear strength, elongation, shrinkage temperature, and chrome oxide content, as well as the pollutants content of wastewater as chemical oxygen demand (COD), biological oxygen demand (BOD), total suspended solid (TSS), and total dissolve solid (TDS). The experiment used a completely randomized design with a factorial arrangement. The first factor was pH variables consisted of 3 levels, i.e., 4, 5, and 6 in the final deliming solution. The second factor was the deliming time consisted of 3 levels, i.e., 45 min, 60 min, and 75 min. Data were analyzed using Analysis of Variance (ANOVA) and then Duncan's Multiple Range Test (DMRT). The results showed that deliming for 60 min and the pH of 5 at the end of the solution was the best treatment to remove calcium content in the pelt and reduce the thickness of pelt. It did not affect the physical and chemical quality, such as tensile strength, tear strength, elongation at break, and shrinkage temperature of the wet blue produced. Also, the quality of wastewater produced was better than the use of ammonium sulfate as a deliming agent. It can be concluded that the use of tartaric acid as pH regulator of deliming stage at pH 5 for 60 min can be used as an alternative deliming agent to substitute ammonium sulfate.

show abstract

Measuring Environmental Impact of Agricultural, Manufacturing, and Energy Sectors in Bangladesh Through Life Cycle Assessment

Mahiat

Dastidar

Alam

et al. 2022

Environmental Degradation: Challenges and Strategies for Mitigation

View full text Add to dashboard Cite

Study on Clean Leather Deliming Process with Sulfonated Phthalic Magnesium Salt

Cited by 5 publications

References 0 publications

Application of GSK’s Model in Leather Making: Quantification of the Environmental Efficiency of a Green Solvent Based Deliming Process

Application of GSK’s Model in Leather Making: Quantification of the Environmental Efficiency of a Green Solvent Based Deliming Process

Free Ammonia Deliming: Effect of Tartaric Acid Addition as a Deliming Agent on The Quality of Wet Blue and Wastewater

Measuring Environmental Impact of Agricultural, Manufacturing, and Energy Sectors in Bangladesh Through Life Cycle Assessment

Contact Info

Product

Resources

About