A closed loop for municipal organic solid waste by lactic acid fermentation

2015 ◽  
Vol 175 ◽  
pp. 142-151 ◽  
Author(s):  
Maraike Probst ◽  
Janette Walde ◽  
Thomas Pümpel ◽  
Andreas Otto Wagner ◽  
Heribert Insam
Keyword(s):  
Lactic Acid ◽  
Solid Waste ◽  
Closed Loop ◽  
Lactic Acid Fermentation ◽  
Acid Fermentation ◽  
Organic Solid Waste ◽  
Organic Solid ◽  
Municipal Organic Solid Waste

scholarly journals Simultaneous saccharification and lactic acid fermentation of the cellulosic fraction of municipal solid waste using Bacillus smithii

2020 ◽  
Author(s):  
Micaela G. Chacón ◽  
Christopher Ibenegbu ◽  
David J. Leak
Keyword(s):  
Lactic Acid ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Lactic Acid Production ◽  
Lactic Acid Fermentation ◽  
Potential Candidate ◽  
Acid Fermentation ◽  
Promising Candidate ◽  
Cellulosic Pulp ◽  
Simultaneous Saccharification

Abstract Objective A primary drawback to simultaneous saccharification and fermentation (SSF) processes is the incompatibility of the temperature and pH optima for the hydrolysis and fermentation steps—with the former working best at 50–55 °C and pH 4.5–5.5. Here, nine thermophilic Bacillus and Parageobacillus spp. were evaluated for growth and lactic acid fermentation at high temperature and low pH. The most promising candidate was then carried forward to demonstrate SSF using the cellulosic fraction from municipal solid waste (MSW) as a feedstock. Results B. smithii SA8Eth was identified as the most promising candidate and in a batch SSF maintained at 55 °C and pH 5.0, using a cellulase dose of 5 FPU/g glucan, it produced 5.1 g/L lactic acid from 2% (w/v) MSW cellulosic pulp in TSB media. Conclusion This work has both scientific and industrial relevance, as it evaluates a number of previously untrialled bacterial hosts for their compatibility with lignocellulosic SSF for lactic acid production and successfully identifies B. smithii as a potential candidate for such a process.

Competitive adsorption of Pb2+ and Cd2+ onto activated carbon produced from municipal organic solid waste

2017 ◽  
Vol 60 ◽  
pp. 310-318 ◽  
Author(s):  
Muhammad H. Al-Malack ◽  
Omar G. Al-Attas ◽  
Abdullah A. Basaleh
Keyword(s):  
Activated Carbon ◽  
Solid Waste ◽  
Competitive Adsorption ◽  
Organic Solid Waste ◽  
Organic Solid ◽  
Municipal Organic Solid Waste

The effect of reduced graphene oxide addition on methane production from municipal organic solid waste

2021 ◽  
Author(s):  
Öznur Begüm Gökçek ◽  
Fatma Muratçobanoğlu ◽  
Hamdi Muratçobanoğlu ◽  
Deniz Uçar ◽  
Ruhullah A. Mert ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solid Waste ◽  
Reduced Graphene Oxide ◽  
Methane Production ◽  
Organic Solid Waste ◽  
Oxide Addition ◽  
Organic Solid ◽  
Reduced Graphene ◽  
Municipal Organic Solid Waste

Kinetics of Lactic Acid Fermentation on Food Waste by Lactobacillus bulgaricus

2010 ◽  
Vol 113-116 ◽  
pp. 1235-1238 ◽  
Author(s):  
Min Wang ◽  
Zhi Jun Xu ◽  
Tian Lei Qiu ◽  
Xiao Hong Sun ◽  
Mei Lin Han ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Kinetic Model ◽  
Food Waste ◽  
Estimation Procedure ◽  
Lactobacillus Bulgaricus ◽  
Model Parameters ◽  
Acid Fermentation ◽  
Organic Solid Waste ◽  
Organic Solid ◽  
Kinetics Of

Lactic acid (LA) production from food waste (FW) is a novel recycling method for organic solid waste. In this study, 35.12g/L LA produced from non-autoclaved FW by Lactobacillus bulgaricus, with a volumetric productivity of 0.98g/(L•h). The kinetic model of lactic acid formation in the FW fermentation at 45 0C and pH 5.5-6.0 was established. A nonlinear parameter estimation procedure was used to obtain optimal kinetic model parameters.

scholarly journals Comparison between Vermicompost and Conventional Aerobic Compost Produced from Municipal Organic Solid Waste Used in Amaranthus viridis Production

2017 ◽  
Vol 9 (2) ◽  
pp. 43-49 ◽  
Author(s):  
MS Islam ◽  
M Hasan ◽  
MM Rahman ◽  
MN Uddin ◽  
MH Kabir
Keyword(s):  
Solid Waste ◽  
Block Design ◽  
Growth And Yield ◽  
Research Centre ◽  
Plant Sample ◽  
Physical Analysis ◽  
Dry Matter Content ◽  
Organic Solid Waste ◽  
Organic Solid ◽  
Municipal Organic Solid Waste

The study was conducted to determine the performance of vermicompost and conventional aerobic compost produced from municipal organic solid waste used in Amaranthus viridis production during the period from October 2014 to June 2015 at the Horticulture Research Centre of the Bangladesh Agriculture Research Institute, Gazipur, Bangladesh. In this study, three compost varieties (vermicompost, conventional aerobic compost, combination of vermicompost and conventional compost) and three levels of compost treatments (0, 100 and 150 g/m2) with three replications were applied. The plots were arranged in randomized complete block design. Vermicompost was prepared by using Eisenia fetida. Different composts (vermicompost and conventional aerobic compost) and plant sample were taken first for chemical and physical analysis to find out the effect of these composts on the growth of amaranth. The result of the study showed that different compost varieties significantly affected the chlorophyll content, dry matter content, height per plant, numbers of leaves, weight per plant, nitrogen, calcium, magnesium, potassium, total phosphorus positively in favour of vermicompost application and sulphur content, sodium, moisture content in conventional aerobic compost application. Vermicompost application showed higher result for growth and yield indices and nutrient content compared with conventional aerobic compost.J. Environ. Sci. & Natural Resources, 9(2): 43-49 2016

scholarly journals Efeitos da relação carbono/ nitrogênio na produção de biogás proveniente de resíduos sólidos orgânicos urbanos / Effects of the carbon-nitrogen ratio on the biogas production from municipal organic solid waste

2021 ◽  
Vol 7 (9) ◽  
pp. 87033-87044
Author(s):  
Caroline Cecílio Dornelas Regazi ◽  
Giovana Ribeiro De Almeida ◽  
Hiago Tavares De Souza ◽  
Marina Guião de Souza Lima ◽  
Roberto Guião de Souza Lima Júnior ◽  
...  
Keyword(s):  
Solid Waste ◽  
Biogas Production ◽  
Organic Solid Waste ◽  
Organic Solid ◽  
Carbon Nitrogen Ratio ◽  
Nitrogen Ratio ◽  
Municipal Organic Solid Waste

scholarly journals Physiology and Rumen Microbial Ecology of Goats Fed Municipal Organic Solid Wastes Treated with Diastic Microbes from Snail (Achatina achatina)

2021 ◽  
pp. 82-94
Author(s):  
Agida, Christopher Agboje ◽  
Essien Ekpenyong Nsa ◽  
Uduakobong Essien John ◽  
Constance Ihuoma Adje ◽  
A. N. Chukwuemela ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Microbial Ecology ◽  
Solid Waste ◽  
Organic Waste ◽  
Volatile Fatty Acids ◽  
Panicum Maximum ◽  
Total Volatile ◽  
Organic Solid Waste ◽  
Organic Solid ◽  
Municipal Organic Solid Waste

The experiment was conducted with the objective of providing more information on the physiology and rumen microbial ecology of goats fed municipal organic solid waste treated with Diastic microbes of snails (Achatina achatina). The study was on the treated and untreated municipal organic solid waste as components of experimental diet. Balanced rations containing diets; A = 45% untreated municipal organic waste (UMOW), B = 45% treated municipal organic waste (TMOW), and C = 70% treated municipal organic waste (TMOW), with wheat offal, palm kernel cake, and molasses used to balance the diets. Where grass/legume ratio of 3 parts of Panicum maximum and 1 part of Centrocema were fed across treatments at the same proportion. The three rations were fed to 18 unsex Red Sokoto goats aged between 6 to 7 months, with an average weight of 8.01±2.50kg. They were housed in pens, on a floor space of 0.5 to 0.75m2 in a completely randomized designed experiment replicated six times and fed for a period of 52 days. The results were separated according to the parameters of rumen physiology (pH, total volatile fatty acids, acetic, propionic, butyric acids and ethanol, and rumen ecology (bacteria, protozoa, and fungi, which are mainly anaerobic microbes). The investigations revealed that microbial (bacteria, protozoa and fungi) load counts were significantly (p<0.05) influenced by dietary treatments. While the total volatile fatty acids (TVFA), acetic, butyric and propionic increased (p<0.05) except for the TVFA and the propionic acid that showed numerical (p>0.05) increased levels of (TMOW). The pH levels improved (p>0.05) between 6.7 to 6.8 where the rumen electrolytes (Ca, Na and K) increased (p<0.01) with increased levels of TMOW. Rumen moisture, dry matter and fat content were (p<0.01) influenced by TMOW diets while ash content was (p<0.01) influenced by the TMOW. Crude protein, ether extract, crude fibre and carbohydrate were not affected (p<0.01; p<0.05) affected. It is good to note that, the microbial community of snail used in the pre-feeding fermentation of municipal organic waste had influence in the physiology and rumen microbial ecology at interface with the goat, enhanced improved the organic matter degradation and feed quality, of the highly fibrous municipal organic solid waste.

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