Dewas, India
Dewas, India

Time filter

Source Type

Chaudhary R.,Devi Ahilya University | Pati A.,Devi Ahilya University | Pati A.,Tata International Ltd
Journal of the American Leather Chemists Association | Year: 2016

Environmental constraints have become key issue for sustenance of industries worldwide. Waste management approach insists tanners look for an innovative way of creating wealth from waste. Chrome tanned leather shavings (CTLS) are generated in leather making process and requires a major attention on disposal. There are developed processes for recovery of protein and chromium from CTLS through acid/alkaline/enzymatic hydrolysis process. However, the derived protein hydrolyzate contains impurities such as chromium and neutral salts. In this study, an attempt has been made to purify protein hydrolyzate through protein precipitation process. Protein purification studies have been carried out to study the influence of factors such as salt concentrations, pH and time. The purity of protein hydrolyzate before and after purification process is found to be 95 and 99.4% respectively. This is further evidenced from amino acid analysis of protein hydrolyzate before and after purification. The recovered protein hydrolyzate could be used in a wide range of products such as fertilizer, animal feed and bio-composites.


Chaudhary R.,Devi Ahilya University | Pati A.,Devi Ahilya University | Pati A.,Tata International Ltd
Environmental Science and Pollution Research | Year: 2016

Leather industry generates huge amount of chrome-containing leather solid waste which creates major environment problems to tanners worldwide. Chrome-tanned leather solid waste is primarily chromium complex of collagen protein. The presence of chromium limits its protein application in animal feed industry. The purified protein hydrolysate with zero chromium could be used in poultry feed. In this study, an attempt has been made to assess performance of poultry with purified protein hydrolysate as a feed derived from chrome-tanned leather waste as partial replacement of soyabean meal as a sole source of protein for growing broiler chickens. Growth study was conducted to evaluate the effect of feeding protein hydrolysate on performance and physiochemical characteristics of meat of broiler chickens. Two experimental diets containing various levels of protein hydrolysate (EI—20 % and EII—30 %) were evaluated. The comparative study was performed as control with soyabean meal. Daily feed intake, body weight gain and feed conversion ratio were measured from day 8 to day 35. At the end of the study, birds were randomly selected and slaughtered to evaluate for physiochemical characteristics of meat. Diet had significant effects on feed intake and body weight gain. Birds fed with 20 and 30 % protein hydrolysate consumed 9.5 and 17.5 % higher amount of feed and gained 6.5 and 16.6 % higher than soyabean meal-fed birds. The current study produced evidence that protein hydrolysate can replace up to 75 % of soyabean meal in broiler diets without affecting either growth performance or meat characteristics. © 2016 Springer-Verlag Berlin Heidelberg


Pati A.,Devi Ahilya University | Pati A.,Tata International Ltd | Chaudhary R.,Devi Ahilya University | Subramani S.,Tata International Ltd
Journal of the American Leather Chemists Association | Year: 2013

Chrome shavings are one of the major solid wastes generated during the leather making process. The presence of chromium in waste creates difficulty in disposing to landfill and incineration. Growing environmental concern about the toxicity and environmental impact of the chromium solid waste generated from the tannery has become key issue. In this work, a study has been made to extract protein from chrome shavings through a biochemical method. In this biochemical method the combination of chemical and enzyme processes have been employed to achieve the optimum extraction of protein. Optimization studies on enzyme and alkali concentration, time, pH and temperature on protein extraction were performed. Further, protein extraction by protease mixed with α-amylase has also been investigated. It was found that there was significant change in the protein extraction by protease in the presence of α-amylase. The protein extraction efficiency by conventional and biochemical method is found to be 60 and 80%, respectively. This study provides a biochemical method of hydrolysis for chrome shavings to protein and chromium.


Pati A.,Devi Ahilya University | Pati A.,Tata International Ltd | Chaudhary R.,Devi Ahilya University
Environmental Science and Pollution Research | Year: 2015

Leather processing discharges enormous amount of chrome containing leather solid waste which creates a major disposal problem. Chrome-tanned leather solid waste is a complex of collagen and chromium. The presence of chromium limits protein application in fertilizer industry. The purified protein hydrolysate with zero chromium could be used as a nitrogen source for fertilizer formulation. In this study, an attempt has been made to employ purified protein hydrolysate derived from chrome-tanned leather shavings (CTLS) in formulation of fertilizer. The formulated fertilizer (1–3 t ha−1) is employed as nitrogen source in production of soybean. Plant growth study demonstrates that formulated fertilizer dosage 3 t ha−1 produced similar effects of commercial fertilizer-treated plants. Application of formulated fertilizer yielded higher seed in plant than commercial fertilizer. © 2015, Springer-Verlag Berlin Heidelberg.


Pati A.,Devi Ahilya University | Pati A.,Tata International Ltd | Chaudhary R.,Devi Ahilya University | Subramani S.,Tata International Ltd
Environmental Science and Pollution Research | Year: 2014

Raw hide/skins come to the tanners as a by-product of meat industry which is converted into value-added leather as product for fashion market. Leather manufacturing is a chemical process of natural biological matrix. It employs a huge quantity of water and inorganic and organic chemicals for processing and thereby discharges solid and liquid wastes into the environment. One of the potential solid wastes generated from leather industry is chrome-tanned leather shavings (CTLSs), and its disposal is increasingly becoming a huge challenge on disposal to tanners due to presence of heavy metal chromium. Hence, finding a sustainable solution to the CTLS disposal problem is a prime challenge for global tanners and researchers. This paper aims to the deeper review of various disposal methods on CTLS such as protein, chromium, and energy recovery processes and its utilization methodologies. Sustainable technologies have been developed to overcome CTLS solid wastes emanating from leather processing operations. Further, this review paper brings a broader classification of developed methodologies for treatment of CTLSs. © 2014, Springer-Verlag Berlin Heidelberg.

Loading Tata International Ltd collaborators
Loading Tata International Ltd collaborators