Browsing by Author "Rifat Azam"

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Biobased treatment and resource recovery from slaughterhouse wastewater via reutilization and recycling for sustainable waste approach
(Elsevier Ltd, 2024) Richa Kothari; Rifat Azam; Anu Bharti; Kajol Goria; Tanu Allen; Veeramuthu Ashokkumar; Deepak Pathania; Rajeev Pratap Singh; V.V. Tyagi
Growing demands for meat production have resulted in the establishment of number of slaughterhouses. However, different processing and manufacturing units of the slaughterhouses leads to the generation of wastewater that pollute the water bodies and cause harm to organisms residing in the vicinity. A rise in the overall water footprint level from the whole process is also an emerging issue. The wastewater produced from slaughterhouses needs to be disposed of properly after suitable, efficient and economically viable treatments. Numerous treatment technologies are being explored for better decontamination of wastewater and production of valuable end products (VAEP). A variety of value-added products are produced during the treatment of slaughterhouse wastewater as it is quite a rich source of organic matter, and it can be utilized in industries for the manufacturing of several products. This article is focused on evaluation of sustainable approach for treating slaughterhouse wastewater. Some of the biological treatment options called bioremediation are also explored which includes phytoremediation and phycoremediation of slaughterhouse wastewater (SHWW). This review has also summarized the reasons for variable water footprint in the slaughterhouse operational process and strategies to lower the level down. © 2024 Elsevier Ltd
Nutrients Sequestration from Slaughterhouse Wastewater with Kinetic Model Studies Using C. vulgaris for Lipid Production and Reduction in Freshwater Footprint: A Synergistic Approach
(Springer Science and Business Media B.V., 2024) Richa Kothari; Rifat Azam; Har Mohan Singh; Pankaj Kumar; Vinod Kumar; Rajeev Pratap Singh; V.V. Tyagi
A new issue resulting from shifting dietary preferences is effluent from slaughterhouses. Because non-point sources produce the majority of the wastewater from slaughterhouses, treating it is a laborious operation. In this study, Chlorella vulgaris (C. vulgaris) was chosen to sequestrate nutrients from slaughterhouses wastewater (at a concentration of 50%) for the removal of pollutants, the generation of lipids, and to enhance the processing of freshwater footprints. The maximum biomass was found 390 mg L−1. Algal growth kinetic investigations backed the Logistic model, which demonstrated greater fitness in predicting a number of important parameters than the modified Gompertz model. Additionally, C. vulgaris is effective at removing pollutant load (32–77% COD and 32–75% BOD) as well as nutrients (33–82% nitrate and 29–78% phosphate). An increasing opportunity for sustainable biofuels is shown by the lipid output (30.7%) throughout the algae culture phase. The first-order model was also useful in figuring out the pollution removal process rate constant. The slaughterhouse wastewater is the good substitute for nutrients removal as well as the production of lipid via reducing the freshwater footprint. Graphical Abstract: (Figure presented.) © The Author(s), under exclusive licence to Springer Nature B.V. 2023.