Biohydrogen Production from Co-Digestion of High Carbohydrate Containing Food Waste and Combined Primary and Secondary Sewage Sludge
Journal: Mehran University Research Journal of Engineering and Technology (Vol.37, No. 1)Publication Date: 2018-01-01
Authors : Maryam Arain Rasool Bux Mahar Abdul Razaque Sahito;
Page : 139-148
Keywords : Biohydrogen; Food Waste; Sewage Sludge; Volatile Solids;
Abstract
In this paper, FW (Food Waste) and SS (Sewage Sludge) were co-digested for biohydrogen production. After characterization both FW and SS were found as better option forbiohydrogen production. FW was rich in carbohydrate containing specially rice, which was added as more than 50% and easily hydrolyzable waste. FW is considered as an auxiliary substrate for biohydrogen production and high availability of carbohydrate in FW makes it an important substrate for the production of biohydrogen. On the contrary, SS was rich in protein and has a high pH buffering capacity, which makes it appropriate for codigestion. Adequate supplementation of inorganic salts, the addition of hydrogen producing inoculums, protein enrichment and pH buffering capacity of SS and carbohydrate content in FW increases the hydrogen production potential. Various experiments were performed by considering different mixing ratios like 90:10, 80:20, 70:30, 60:40 and 50:50 of FW and SS. The 50:50 and 90:10 mixing ratio of FW and SS were found as best among all other co-digested ratios. The maximum specific hydrogenyield 106.7 mL/gVS added was obtained at a waste composition of 50:50 followed by 92.35 mL/gVSadded from 90:10 of FW to SS. The optimum pH and temperature for operating this process werein the range of 5.5-6.5 and 35°C. The production of clean energy and waste utilization in anaerobic co-digestion process makes biohydrogen generation a promising and novel approach to fulfilling the increasing energy needs as a substitute for fossil fuels.
Other Latest Articles
- LITTLE OLD LADY’S HERNIA SURGEONS CHALLENGE
- PHYLLODES TUMOR OF THE BREAST : A CLINICOPATHOLOGICAL ANALYSIS FROM A SINGLE INSTITUTION
- Effect of Organizational Structures and Types of Construction on Perceptions of Factors Contributing to Project Failure in Pakistan
- Temporary abdominal closure techniques in open abdomen – a word of caution
- Surgical blade retrieval from Abdomen by Laparotomy after 5 yrs! -Case report and Review of literature on retained foreign bodies in abdomen
Last modified: 2018-02-03 18:18:17