This study assessed the effect of different lignocellulosic amendments and bulking agents on compost stability (based on a 4 day respiration activity test, AT4, and self-heating factor, SHF) and maturity (based on the nitrification index Initr and the ratio of C in humic acids, HA, to total organic carbon, TOC, in compost, CHA/TOC). With all feedstock …
This study assessed the effect of different lignocellulosic amendments and bulking agents on compost stability (based on a 4 day respiration activity test, AT4, and self-heating factor, SHF) and maturity (based on the nitrification index Initr and the ratio of C in humic acids, HA, to total organic carbon, TOC, in compost, CHA/TOC). With all feedstock …
These processes play an important role in the hydrogen economy. The purpose of storing hydrogen energy is to be safe and efficient, and to be used anywhere and anytime. ... As a result, in the studies on NaBH 4, a single-stage hydrogen production and storage was realized and the raw material costs were significantly reduced. Although LiBH4 has ...
Using hydrogen energy as an alternative renewable source of fuel is no longer an unrealized dream, it now has real-world application. The influence of nanomaterials on various aspects of hydrogen energy, such as hydrogen production, storage, and safety, is considerable. In this review, we present a brief overview of the nanomaterials that have been …
This study demonstrated that it was feasible to enhance hydrogen production and sludge reduction by co-fermentation with poplar leaves, flower waste and ryegrass.
This study discusses the injection, storage and production of hydrogen in an open saline aquifer anticline using industry standard reservoir engineering software, and investigates the role of ...
The treatment of sewage sludge (SS) by thermal hydrolysis has gradually become one of the most matured technology at commercial scale. It has significantly improved the fluidity of the sludge, disrupted its floc structure, hydrolyzed extracellular polymeric substances (EPS), and increased biogas production (Neczaj & Grosser 2019) is now widely used in …
There are many applications for the technology of producing hydrogen from organic waste. Due to its large volume, high organic content, and stable source, sewage sludge has gained significant attention among various organic wastes. The purpose of this paper is to present a bibliometric and technological study of hydrogen production from anaerobic …
The essence of fermentative hydrogen production is degrading and converting organic matters to hydrogen by anaerobic bacteria (Hallenbeck 2009).Proteins, carbohydrates, and lipids are three main organic components of sludge, accounting for more than 80% of total volatile solids (VS) (Yang et al. 2015b).Among these organic components, carbohydrates have …
This study elucidates recent trends in sewage sludge (SS)-derived hydrogen through diverse production pathways and critically evaluates the impact of varying parameters …
1. Introduction. The main deficiency plaguing the activated sludge process is the generation of large amounts of waste activated sludge (WAS). It is estimated that by 2025, China alone will produce 70 million metric tons (80 % moisture content) of WAS per year (Wang et al., 2022).Biogas production (mainly hydrogen and methane) by anaerobic fermentation offers …
Carbon-rich and nitrogen efficient solid waste such as activated sludge recovered by digestion, fermentation, combustion, gasification, and pyrolysis are well-known sludge-to …
The maximum hydrogen production yield and hydrogen production rate increased from 10.1 ± 0.2 to 14.2 ± 0.2 mL/g VSS and 0.09 to 0.13 mL/g VSS·h, respectively, when TCC level increased from 0 to ...
This paper discusses the challenges faced in anaerobic hydrogen production from sludge and concludes that more research is needed for its commercialization and large …
The use of hydrogen as clean fuel gas in the power generation sector becomes essential to reduce the environmental issues related to conventional fuel usage. By avoiding biomass drying process, supercritical water gasification is considered the most efficient technology in hydrogen production from wastewater sludge. Wastewater sludge is difficult …
Nanomaterials are beginning to play an essential role in addressing the challenges associated with hydrogen production and storage. The outstanding physicochemical properties of nanomaterials ...
The most common way of producing hydrogen is through electrolysis of water. Electricity for electrolysis can be generated using fossil fuels, hydropower, nuclear power, geothermal, solar, or wind power (Olabi et al., 2021b).As a result, the method of generating energy required for electrolysis is vital since it must limit emissions and be as environmentally …
Introduction. Hydrogen as a promising kind of clean energy can be produced from both fossil fuels [1], and renewable resources, like biomass, wind energy and solar energy [2], [3].Currently, natural gas took the majority of hydrogen production (48%) by steam reforming method, followed by heavy oils and naphtha (30%), and coal (18%) [1], [4], [5], [6], which …
To provide more efficient energy and save the environment, waste-to-hydrogen is a concept emphasizing hydrogen production from waste materials such as biomass waste, municipal solid waste, sewage sludge, packaging and plastics, and recovered fuels. ... biogas, fuel gas, biofuel (syngas, bio-diesel, bio-oil). This chapter focuses on the ...
The hydrogen production by the granular sludge and the macroscopic operating performance has gradually become ... peristaltic pump, liquid-storage tank, and gas-collection bag; the reactor had a working volume of 17 L. Seed sludge was ... reactor increased. Thus, the three-phase separator did play a role in this stage. Although there was an ...
Hydrogen is a kind of clean effective resource. Sewage sludge is regarded as a promising material for hydrogen production because it owns a wide range of sources and the methods are consistent with the goal of sustainable development. This work reviews existing hydrogen production technologies from sewage sludge, including photo-fermentation, dark …
Various low cost materials like kitchen waste, activated waste sludge, municipal waste, and waste from various industries can be used as feedstocks. Investigations for …
This paper reviews the formation, structure, and stability of bioaggregates with an emphasis on the composition and distribution of extracellular polymeric substances (EPS) and their role in bioaggregation. Bioaggregation is ubiquitous in natural environment and is of great importance in biological wastewater treatment processes. It greatly influences the flocculability, …
This study discusses the injection, storage and production of hydrogen in an open saline aquifer anticline using industry standard reservoir engineering software, and investigates the role of ...
This mini-review, enhanced with a bibliometric analysis, explores biochar production via sewage sludge pyrolysis and its diverse applications, employing a bibliometric method to map the scientific ...
The sewage sludge (SS), owing to its diverse sources and characteristics, is considered a promising candidate to be employed as a potential substrate material for H 2 production (Nikolaidis and Poullikkas, 2017). Generally, it refers to the leftover waste material from the wastewater treatment processes and can be utilized as a feedstock for energy …
ENTSOG, GIE and Hydrogen Europe have joined forces on a paper that answers a number of fundamental questions about gaseous and liquid hydrogen transport and storage. This paper …
Batch tests were conducted to enhance hydrogen production from food waste and sewage sludge under various volatile solid (VS) concentrations of 1.5–5% and food waste to sewage sludge mixing ...
A lot of literature relevant to hydrothermal gasification, hydrogen fuel, green hydrogen gas production techniques and engine performance behaviour are summarized, and the gasification temperature and time to process is the main factor for deciding the hydrogen yield during the hydrothermal gasification process for waste sewage sludge and Algae.
Alternative fuel opportunities can satisfy energy security and reduce carbon emissions. In this regard, the hydrogen fuel is derived from the source of environmental pollutants like sewage and algae wastewater through hydrothermal gasification technique using a KOH catalyst with varied gasification process parameters of duration and temperature of 6–30 …
Hydrogen storage is coupled with hydrogen production, for example via water electrolysis, and hydrogen conversion into electricity (and possibly heat), for example through a fuel cell [27]. This means that hydrogen-storage systems are characterized by a low round-trip efficiency, due to the hydrogen production and conversion processes, and high ...
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