Hair, serum, and urine chromium concentrations in former employees of the leather tanning industry

1992 ◽  
Vol 32 (1-3) ◽  
pp. 155-159 ◽  
Author(s):  
Janis Randall Simpson ◽  
Rosalind S. Gibson
Keyword(s):  
Leather Tanning ◽  
Urine Chromium ◽  
Tanning Industry ◽  
Serum And Urine

Use and minimization of water in leather tanning processes

1999 ◽  
Vol 40 (1) ◽  
pp. 237-244 ◽  
Author(s):  
O. Tünay ◽  
I. Kabdaşlı ◽  
D. Orhon ◽  
G. Cansever
Keyword(s):  
Water Use ◽  
Water Conservation ◽  
Complex Structure ◽  
Extensive Study ◽  
Pollution Load ◽  
Leather Processing ◽  
Leather Tanning ◽  
High Pollution ◽  
The Subject ◽  
Tanning Industry

Minimization of water use and reuse applications within industry has recently gained importance within the context of water conservation efforts. The leather tanning industry is one of the subject industries due to large amount of water to be disposed of together with a high pollution load. The leather tanning industry has a complex structure in terms of materials, processes and manufacturing practices. Therefore a systematic approach is required to assess water use practice. In this study, bovine leather processing was taken as an example. An extensive study was conducted as on-site evaluations and questionnaires in the İstanbul Organized Leather Tanning District to assess water use practices, patterns and minimization trends. Results of the study were discussed and important aspects of water minimization practices have been pointed out.

Assessment of source-based nitrogen removal alternatives in leather tanning industry wastewater

2002 ◽  
Vol 45 (12) ◽  
pp. 205-215 ◽  
Author(s):  
G. Zengin, ◽  
T. Ölmez ◽  
S. Doğruel ◽  
I. Kabdaşlı ◽  
O. Tünay
Keyword(s):  
Ammonium Phosphate ◽  
Ammonia Removal ◽  
Treatment Alternative ◽  
Magnesium Ammonium Phosphate ◽  
Leather Tanning ◽  
Magnesium Ammonium ◽  
Definition Of ◽  
Parameter Values ◽  
Industry Wastewater ◽  
Tanning Industry

Nitrogen is an important parameter of leather tanning wastewaters. Magnesium ammonium phosphate (MAP) precipitation is a chemical treatment alternative for ammonia removal. In this study, a detailed source-based wastewater characterisation of a bovine leather tannery was made and nitrogen speciation as well as other basic pollutant parameter values was evaluated. This evaluation has led to definition of alternatives for source-based MAP treatment. MAP precipitation experiments conducted on these alternatives have yielded over 90% ammonia removal at pH 9.5 and using stoichiometric doses. Among the alternatives tested liming-deliming and bating-washing was found to be the most advantageous providing 71% ammonia removal.

Recent use of selected phytochemistry to mitigate environmental challenges facing leather tanning industry: a review

2019 ◽  
Vol 18 (5) ◽  
pp. 1361-1373 ◽  
Author(s):  
Kallen Mulilo Nalyanya ◽  
Ronald Rop ◽  
Arthur Onyuka ◽  
Zephania Birech
Keyword(s):  
Environmental Challenges ◽  
Leather Tanning ◽  
Tanning Industry

Reducing the environmental impact of the unhairing–liming process in the leather tanning industry

2006 ◽  
Vol 14 (1) ◽  
pp. 65-74 ◽  
Author(s):  
Dima W. Nazer ◽  
Rashed M. Al-Sa'ed ◽  
Maarten A. Siebel
Keyword(s):  
Environmental Impact ◽  
Leather Tanning ◽  
Tanning Industry

Pilot Study of Chromium Exposures in the Mongolian Leather Tanning Industry

Epidemiology ◽  
2006 ◽  
Vol 17 (Suppl) ◽  
pp. S184-S185 ◽  
Author(s):  
O Lkhasuren ◽  
A Riederer ◽  
N Galsandamba ◽  
C Ochir
Keyword(s):  
Pilot Study ◽  
Leather Tanning ◽  
Tanning Industry

scholarly journals Designing the Measurement of System Green Manufacturing Using SCOR Model in The Leather Tanning Industry

2018 ◽  
Vol 5 (02) ◽  
pp. 60
Author(s):  
Baiti Jannah ◽  
Ari Yanuar Ridwan ◽  
Rosad Ma'ali El Hadi
Keyword(s):  
Process Model ◽  
Manufacturing System ◽  
Green Manufacturing ◽  
Chain Operation ◽  
Leather Tanning ◽  
Scor Model ◽  
The Government ◽  
Supply Chain Operation ◽  
Green System ◽  
Tanning Industry

The leather tanning industry is one industry that has a high value in Indonesia because this industry is not only for domestic supplies but rather abroad. This industry using primary materials that is water mixed with chemicals. It cause the leather tanning industry produce a lot of waste liquid that can pollute the environtment. Currently, the government in Indonesi has been encouraging the industry to adopt green system and sustainable. In addition, one of export requirement are environtmentally friendly. Realizing these environtmentally friendly industry that must implemented green manufacturing system first. Green manufacturing system can be applied easily if there is a performance measurement and monitoring activities in the manufacturing process. Model SCOR (supply chain operation reference) as a reference in measuring performance and monitoring the activities of manufacturing. The conceptual model in this study begins identifying stakeholders, business process identification, identification of green requirements, identification of green objective and selection of KPI. KPI is defined based on SCOR metrics. After the design of KPI done advanced weighting using AHP method.

Chemical Treatment of Liquid Waste Generated from Leather Tannery Industry by Using Alum as Coagulant Material

2020 ◽  
Vol 991 ◽  
pp. 178-184
Author(s):  
Zainus Salimin ◽  
Faldy W. Satiyoaji ◽  
Dwi A. Prasetya ◽  
Achmad Chafidz
Keyword(s):  
Chromium Content ◽  
Liquid Waste ◽  
Quality Standards ◽  
Trivalent Chromium ◽  
Total Chromium ◽  
Chromium Level ◽  
A Value ◽  
Leather Tanning ◽  
Tannery Industry ◽  
Tanning Industry

The tannery industry generally produces trivalent chromium waste (Cr3 +) and hexavalent chromium (Cr6 +). This waste before being released into the environment must meet quality standards according to KEPMENLH no.51 / MENLH / 10/1995 concerning liquid quality standards for industrial activities which says the maximum total chromium content is 0.6 ppm. This study aims to reduce the levels of Chromium in waste produced by the leather tanning industry by using alum coagulants. This research uses simulation waste which is made based on the results of BPPT analysis of waste in the leather tanning industry in Tangerang city, namely CV "Lengtat Tangerang Leather". The method used in this research is coagulation-flocculation with alum as a coagulant and lime as an alum reaction assistant in the form of hydroxide ions. The parameters observed in this study were the pH adjustment and the ratio of alum mass to lime mass. From the results of the study it was found that the decrease in the best chromium content for Cr + 3 occurred at a ratio of 5 and pH 8.2 which resulted in a chromium content of 0.0076 ppm with a decrease in percentage of 99.95%. As for the Cr6 + test, at a ratio of 3 and pH 6.4 the chromium content showed a value of 0.4110 ppm. The lowest chromium level occurs at a ratio of 5 and pH of 5.8 which results in a chromium level of 0.3341 ppm with a decrease percentage of 56.61%.

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