Anaerobic digestion (AD) involves the breakdown of a substrate by mixed microbial communities in absence free oxygen. This process has many benefits leading to production bioenergy (biogas) and fertilizers (bio-fertilizers). Unfortunately, bio-fertilizer made using AD may be contaminated with weed seeds have potential infesting fields which it is applied. Thus, goal this study determine effects...

Sugarcane is a lignocellulosic crop which used to produce sugar in sugarcane processing industries. Globally, industries generate solid and liquid wastes amounting more than 279 million tons per annum by-products; namely, trash, bagasse, mill mud, molasses. The valorisation of waste by-products has recently increased playing significant role achieving policies goals associated with circular bio...

Anaerobic digestion is an effective biotechnological process for treatment of different agricultural, municipal and industrial wastes. However, it is a very unstable process in regard to the biogas reactors operation. This is due to the complicated interactions between different microbial species as well as of the complex transformations of the organic matter affected by a variety of environmen...

In this study, eight different manure treatment plants were monitored. The plants were four on-farm and four centralized treatment plants, all of them at full-scale level. Assessment includes a total of seven pre-treatment and process units as follows: mechanical separation, with and without coagulant and flocculant addition, pasteurization, nitrification-denitrification, anaerobic digestion, a...

Low ability of waste sewage sludge to degrade cellulose is observed due its less cellulolytic bacteria content. The enrichment in the absence or presence carboxymethylcellulose (CMC) was conducted improve anaerobic digestion (AD) this study. Compared initial (IS), enriched without CMC addition (ES) displayed 69.81% higher CH4 yield and about 1.7-fold greater biodegradation cellulose. In particu...

In anaerobic digestion (AD), long-chain fatty acids (LCFAs) produced by hydrolysis of lipids, exhibit toxicity against microorganisms when their concentration exceeds several millimolar. An absorption detection system using a quartz crystal microbalance (QCM) was developed to monitor the LCFA concentration during an anaerobic digester’s operation treating oily organic waste. The dissociation of...

ing the installation of anaerobic digestion systems and the equipment necessary to generate electricity from the methane produced and collected by these systems. There are several reasons these systems are being considered: decreasing onfarm energy costs by using methane to generate electricity; mitigating odor problems on livestock operations; and improving the handling of manure nutrients and...

Increased use of whole-plant maize for anaerobic digestion (AD) in Europe raises the question: Are maize cultivars developed for use in animal nutrition equally appropriate as feedstock for AD or should different phenotypes be selected? The main objective in growing whole-plant maize as feedstock for AD is maximum output of methane per hectare. There is less need for rapidly digested plant comp...

To evaluate the feasibility of swine manure treatment by a proposed Dry Thermophilic Anaerobic Digestion (DT-AD) system, we evaluated the methane yield of swine manure treated using a DT-AD method with rice straw under different C/N ratios and solid retention time (SRT) and calculated the mass and energy balances when the DT-AD system is used for swine manure treatment from a model farm with 10...

The present study investigates the influence of individual and combined hydrogen peroxide and thermal pre-treatment of waste activated sludge on anaerobic digestion. For so doing, it employs anaerobic batch reactors in the mesophilic conditions. For comparison, soluble fractions of organic matter, biogas production, biochemical methane potential, removal of chemical oxygen demand (COD), and vol...