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Experimental biogas production from recycled pulp and paper wastewater by biofilm technology
- Source :
- Biotechnology Letters. 41:1299-1307
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- The main objective of this study is the evaluation of RPPW anaerobic digestion feasibility at laboratory scale under Mesophilic condition. The experiment is conducted using a two-stage biofilm digester of 5 L capacity with mobile support material. Anaerobic treatment of wastewater from recycled pulp and paper industry in Morocco was tested using a laboratory-scale anaerobic biofilm digester that operated under mesophilic conditions over a 70-day. Chemical oxygen demand (COD) efficiency, volatile and total solid (VS, TS) elimination of the substrate during the process were: 78%, 52% and 48% respectively. The system was stable throughout its operating cycle with an optimum pH (7.24), alkalinity (1750 mg CaCO3/L) and a volatile fatty acid value (760 mg/L). The experimental daily biogas production measured reaches a value of 5 L/day with a composition of 71% methane, 27.6% carbon dioxide, 0.2 oxygen and 7713 ppm of the H2S. The study results show that the anaerobic biofilm reactor is a suitable technique for recycled pulp and paper wastewater (RPPW) treatment. The reactor shows high performances in terms of process stability, removal efficiency (> 70%) and biogas production. Anaerobic digestion is an efficient waste treatment technology that uses natural anaerobic decomposition to reduce the volume of waste while producing biogas. However, research is needed to strengthen microbial metabolism, biochemistry and the functioning of the rector to improve biogas production. The RPPW AD experiment with biofilm digester technology was stable throughout the operation period. The digester knows an overloaded in the last phase of the experiment which leads to an inhibition of biogas production.
- Subjects :
- Paper
0106 biological sciences
0301 basic medicine
Industrial Waste
Bioengineering
Wastewater
engineering.material
Waste Disposal, Fluid
01 natural sciences
Applied Microbiology and Biotechnology
Methane
03 medical and health sciences
chemistry.chemical_compound
Bioreactors
Biogas
010608 biotechnology
Anaerobiosis
Pulp (paper)
Chemical oxygen demand
Equipment Design
General Medicine
Pulp and paper industry
Oxygen
Waste treatment
Anaerobic digestion
030104 developmental biology
chemistry
Biofilms
Biofuels
engineering
Environmental science
Anaerobic exercise
Biotechnology
Subjects
Details
- ISSN :
- 15736776 and 01415492
- Volume :
- 41
- Database :
- OpenAIRE
- Journal :
- Biotechnology Letters
- Accession number :
- edsair.doi.dedup.....29b3cc4004fe520ed1403fb4aceee3b8