scholarly journals Effectiveness of sunflower seed husk biochar for removing copper ions from wastewater: a comparative study

2016 ◽  
Vol 11 (No. 1) ◽  
pp. 53-63 ◽  
Author(s):  
M.E. Saleh ◽  
A.A. El-Refaey ◽  
A.H. Mahmoud
2018 ◽  
Vol 68 (18) ◽  
pp. 1142-1153 ◽  
Author(s):  
Hamed Massoumi ◽  
Jhamak Nourmohammadi ◽  
Mehri Sadat Marvi ◽  
Fathollah Moztarzadeh

Processes ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 591 ◽  
Author(s):  
Xuyang Cui ◽  
Junhong Yang ◽  
Xinyu Shi ◽  
Wanning Lei ◽  
Tao Huang ◽  
...  

Pelletization is a significant approach for the efficient utilization of biomass energy. Sunflower seed husk is a common solid waste in the process of oil production. The novelty of this study was to determine the parameters during production of a novel pellet made from sunflower seed husk. The energy consumption (W) and physical properties (bulk density (BD) and mechanical durability (DU)) of the novel pellet were evaluated and optimized at the laboratory by using a pelletizer and response surface methodology (RSM) under a controlled moisture content (4%–14%), compression pressure (100–200 MPa), and die temperature (70–170 °C). The results show that the variables of temperature, pressure, and moisture content of raw material are positively correlated with BD and DU. Increasing the temperature and moisture content of raw materials can effectively reduce W, while increasing the pressure has an adverse effect on W. The optimum conditions of temperature (150 °C), pressure (180 MPa), and moisture content (12%) led to a BD of 1117.44 kg/m3, DU of 98.8%, and W of 25.3 kJ/kg in the lab. Overall, although the nitrogen content was slightly high, the novel manufactured pellets had excellent performance based on ISO 17225 (International Organization for Standardization of 17225, Geneva, Switzerland, 2016). Thus, sunflower seed husk could be considered as a potential feedstock for biomass pelletization.


1981 ◽  
Vol 58 (11) ◽  
pp. 993-996 ◽  
Author(s):  
J. A. Robertson ◽  
W. R. Windham

2020 ◽  
Vol 26 (5) ◽  
pp. 200361-0
Author(s):  
Sinduja Boopathy ◽  
Merline Sheela Appavoo ◽  
Ilamathi Radhakrishnan

To remediate crude oil-contaminated soil, poultry droppings and sunflower seed husk were incorporated at various concentrations. Initially, the pH, moisture content, total organic carbon (TOC), total nitrogen content, and bacterial population of soil, poultry droppings, and sunflower seed husk were determined. The initial bacterial population was 35 × 10<sup>8</sup> colony forming units/g soil (dry weight basis). The total petroleum hydrocarbon (TPH) content in crude oil-contaminated soil was 7,048.4 mg/kg, in which 857.9 mg/kg accounted for eicosane. Naphthalene and acenaphthalene were the two polyhydroxy aromatic hydrocarbons present in soil at low concentrations. After the amendment, the pH, moisture content, microbial population, and TPH content of soil were determined on days 20, 40, and 60. The TPH concentration was considerably decreased in the treatment T4 wherein 250 g of soil was mixed with 125 g of poultry droppings and 125 g of sunflower seed husk. The indigenous bacterial population was also increased tremendously. The dehydrogenase enzyme activity was increased in the amended soil (T4: 0.74 ± 0.06 μg TPF/g/h). After the treatment of soil, the germination percentage and vigour index of maize, lady’s finger and tomato seeds were enhanced.


2005 ◽  
Vol 23 (3) ◽  
pp. 182 ◽  
Author(s):  
ZU Khan ◽  
S Ahmad ◽  
E Mokaddas ◽  
N Al-Sweih ◽  
R Chandy

2018 ◽  
Author(s):  
N.L. Devochkina ◽  
R.D. Nurmetov ◽  
R.A. Meshсheryakova ◽  
L.N. Pryanishnikova

Представлены результаты экспериментальной работы по оптимизации состава композиционного субстрата на основе соломы озимой пшеницы и лузги семян подсолнечника, применяемого для промышленного культивирования плодовых тел вешенки, обеспечивающие повышение питательной ценности субстрата, его водно-воздушного режима и повышения урожайности культуры и качества плодовых тел.The results of experimental work on optimization of the composition of the composite substrate based on straw of winter wheat and sunflower seed husk used for industrial cultivation of fruit bodies of oyster mushroom, providing an increase in the nutritional value of the substrate, its water-air regime and increase of crop yield and quality of fruit bodies are presented.


2013 ◽  
Vol 11 (6) ◽  
pp. 1054-1060 ◽  
Author(s):  
Debasis Roy ◽  
Biswajoy Bagchi ◽  
Alakananda Bhattacharya ◽  
Sukhen Das ◽  
Papiya Nandy

2019 ◽  
Vol 80 ◽  
pp. 01001
Author(s):  
Cosmin Spirchez ◽  
Aurel Lunguleasa ◽  
Cătălin Croitoru

The paper aims to use the waste of sun-flower hulls in order to obtain some lignocellulosic briquettes as renewable solid fuels. First, the sunflower seed husks were ground, after that they were sorted and only the fractions corresponding to the briquettes and pellets were used. After obtaining the stable briquettes there were determined the physical and caloric properties of briquettes manufactured from sunflower husks, as potential alternative biofuels. The moisture content, ash content and density of the briquettes have been determined and correlated with their calorific properties, namely the calorific value and calorific density. The experimental results have indicated that, even if the self-adhesion of sunflower seed hulls is less than that of wood sawdust, they have a better behaviour in humid environment. Good results make it possible to use these briquettes for both household heating systems and thermal power plants


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