Multi-objective optimization of the preparation parameters of the powdered activated coke for SO2 adsorption using response surface methodology

In this study, for the rapid preparation of PAC from pulverized coal, response surface methodology (RSM) based on central composite design (CCD) was used to develop the second order quadratic models of SO2 adsorption capacity and burn-off. Analysis of variance (ANOVA) was used to determine the effective parameters of the two models, and to explain the accuracy and fitness of them. In addition, the 3D response surface plots illustrated the influencing rules of the variables and their interactions. Further, multi-objective optimization was performed to maximize SO2 adsorption capacity and minimize burn-off using the desirability function. Optimal process parameters obtained were: reaction temperature, 923.97℃; oxygen concentration, 5.89% and vapor concentration, 20.04%; and the corresponding prediction results were: SO2 adsorption capacity, 110.31mg/g; burn-off, 47.45%. Confirmation experiment at the optimal condition was carried out, and the experimental results were consistent with the model prediction results, further verifying the accuracy and fitness of the models. The optimization results would provide guidance for the design and operation adjustment of large-scale industrial applications in the future.
Source: Journal of Analytical and Applied Pyrolysis - Category: Chemistry Source Type: research

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This article examines how the initial absence of scientific data on the physiologic effects of flamethrowers led to an inaccurate understanding of their let hality, and bizarre claims that one of history’s most horrific instruments of war was considered one of the more “humane” weapons on the battlefield.
Source: Military Medical Research - Category: International Medicine & Public Health Source Type: research
This study describes the clinical profile and recovery pattern of swallowing following inhalation burn injury. All patients admitted 2008 –2017 with confirmed inhalation burns on laryngoscopy and managed by speech-language pathology (SLP) were included. Initial dysphagia presentation and dysphagia recovery pattern were documented using the FOIS. Co-presence of dysphonia was determined clinically and rated present/absent. Persistent laryngeal/pharyngeal injury at 6 months was documented using laryngoscopy. Data were compared to published data from a large adult burn cohort. All patients with confirmed inhalation ...
Source: Dysphagia - Category: Speech-Language Pathology Source Type: research
On some days – or sometimes during weeks or even months – life is just hard and tough. And you may start to think to yourself that you might as well give up on your new habit, current goal or most important dream. This week’s post is all about that. And about the timeless wisdom from the past few thousands of years that can help you to stay strong, to nudge yourself back on the right track again and to keep going towards what you deep down want and dream about. Never Give Up Quotes That Will Help You to Stay Strong “When you get into a tight place and everything goes against you, till it seems as t...
Source: Practical Happiness and Awesomeness Advice That Works | The Positivity Blog - Category: Consumer Health News Authors: Tags: Personal Development Source Type: blogs
Publication date: Available online 26 February 2020Source: Annals of Medicine and SurgeryAuthor(s): Hardisiswo Soedjana, Setiagung A. Bowo, Nandita Melati Putri, Theresia Risa Davita
Source: Annals of Medicine and Surgery - Category: General Medicine Source Type: research
WEDNESDAY, Feb. 26, 2020 -- Starting the day with a big breakfast and keeping dinner light may help you burn more calories and keep you trimmer, new research suggests. Eating this way may also keep your blood sugar levels from going too high, the...
Source: - Daily MedNews - Category: General Medicine Source Type: news
(University of California - Davis) Cats who suffered burns and smoke inhalation in recent California wildfires also had a high incidence of heart problems, according to a new study from researchers at the University of California, Davis, Veterinary Medical Teaching Hospital.
Source: EurekAlert! - Medicine and Health - Category: International Medicine & Public Health Source Type: news
Burn injuries are distressful and shocking events, which can lead to noteworthy sequelae on metabolic markers and organs. Such traumatic accidents do occur every so often in both adult and pediatric populations, requiring prompt and adequate treatments. No...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Age: Infants and Children Source Type: news
INTRODUCTION: Collocated burn and fracture injuries, defined as a burn overlying the site of a fracture, represent a serious subset of major burns and trauma. The literature pertaining to these rare injuries is inconclusive. Recent studies cast doubt on th...
Source: SafetyLit - Category: International Medicine & Public Health Tags: Burns, Electricity, Explosions, Fire, Scalds Source Type: news
Citing coronavirus concerns, at least two Massachusetts colleges are offering students the option to return from studying abroad in Italy. Endicott College in Beverly and Northeastern University in Boston stressed they are monitoring the outbreak and communicating with students studying in Northern Italy who want to make arrangements to return home. Italy has confirmed 322 coronavirus cases and 11 deaths, CNN reported Tuesday even ing. Endicott currently has 36 students in Florence, Italy. "The…
Source: Health Care:Biotechnology headlines - Category: Biotechnology Authors: Source Type: news
Publication date: March–April 2020Source: The Journal of Foot and Ankle Surgery, Volume 59, Issue 2Author(s): Neil B. Patel, Cody Blazek, Rick Scanlan, Jeffrey M. Manway, Patrick R. Burns
Source: The Journal of Foot and Ankle Surgery - Category: Orthopaedics Source Type: research
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