Advances in Preparation of Activated Carbon from Sugarcane Bagasse and Using it to Treatment of Wastewater Research

2014 ◽  
Vol 1010-1012 ◽  
pp. 15-19
Author(s):  
Yan Min Qin ◽  
Mei Na Liang ◽  
Dun Qiu Wang
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Organic Pollutants ◽  
Sugarcane Bagasse ◽  
Industrial Wastewater ◽  
Research Progress ◽  
Future Research ◽  
Preparation Methods ◽  
Existing Problems

This paper discusses the utilization situation and existing problems of sugarcane bagasse, and briefly the research progress of preparation of activated carbon from sugarcane bagasse (ACSB). It reviews the application of activated carbon prepared from sugarcane bagasse, such as, industrial wastewater decolorizing, removal of organic pollutants and heavy metals in wastewater in the domestic and overseas in recent years. Points out the shortage of preparation methods, the existing problems and puts forwards some questions need to be solved in future research. Moreover, the prospect of application and the trends in future research of activated carbon from sugarcane bagasse are proposed.

scholarly journals Preparation, Performances, and Mechanisms of Microbial Flocculants for Wastewater Treatment

2020 ◽  
Vol 17 (4) ◽  
pp. 1360 ◽  
Author(s):  
Huiru Li ◽  
Shaohua Wu ◽  
Cheng Du ◽  
Yuanyuan Zhong ◽  
Chunping Yang
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Suspended Solids ◽  
Current Status ◽  
Future Research ◽  
Research Needs ◽  
Close Attention ◽  
Charge Neutrality ◽  
Environmental Friendliness ◽  
Preparation Methods

In recent years, close attention has been paid to microbial flocculants because of their advantages, including safety to humans, environmental friendliness, and acceptable removal performances. In this review, the preparation methods of microbial flocculants were first reviewed. Then, the performances of bioflocculants in the removal of suspended solids, heavy metals, and other organic pollutants from various types of wastewater were described and commented, and the removal mechanisms, including adsorption bridging, charge neutralization, chemical reactions, and charge neutrality, were also discussed. The future research needs on microbial flocculants were also proposed. This review would lead to a better understanding of current status, challenges, and corresponding strategies on microbial flocculants and bioflocculation in wastewater treatment.

Sorption of Copper and Zinc from Aqueous Solutions by Microwave Incinerated Sugarcane Bagasse Ash (MISCBA)

2016 ◽  
Vol 835 ◽  
pp. 378-385 ◽  
Author(s):  
Ibrahim Umar Salihi ◽  
Shamsul Rahman Mohamed Kutty ◽  
Mohamed Hasnain Isa ◽  
Usman Aminu Umar ◽  
Emmanuel Olisa
Keyword(s):  
Heavy Metals ◽  
Aqueous Solution ◽  
Correlation Coefficient ◽  
Sugarcane Bagasse ◽  
Contact Time ◽  
Industrial Wastewater ◽  
Low Cost ◽  
Isotherm Model ◽  
Copper And Zinc ◽  
Sugarcane Bagasse Ash

Industrial wastewater containing toxic pollutants such as heavy metals tends to contaminate the environment once it is release without proper treatment. Heavy metals are toxic to both human and other living organisms. It is necessary to treat industrial wastewater polluted with heavy metals prior to its discharge into the receiving environment. In this study, low cost adsorbent was generated from sugarcane bagasse through incineration. The prepared adsorbent “microwave incinerated sugarcane bagasse ash” (MISCBA) was used in removing copper and zinc from aqueous solution. Parameters of importance such as pH, contact time and adsorbent dosages are studied to investigate their effects on the adsorption of copper and zinc. Maximum adsorption was observed at pH 6.0, contact time of 180 minutes and adsorbent dosage of 10 g/L. Zinc removal follows Langmuir isotherm model with correlation coefficient of 0.9291. Copper adsorption follows both Langmuir and Freundlich isotherm model with correlation coefficient of 0.9181 and 0.9742, respectively. Removal capacities of 38.4 mg/g and 20.4 mg/g were obtained for copper and zinc, respectively. Application of MISCBA as low - cost adsorbent have shown significant outcome in removal of copper and zinc from aqueous solution.

scholarly journals Adsorption of Heavy Metals from Industrial Wastewater using Nanoparticles from Agro Wastes

2021 ◽  
Author(s):  
Lekan Taofeek Popoola ◽  
Alhaji Shehu Grema
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Industrial Wastewater ◽  
Activated Carbons ◽  
Textural Properties ◽  
Isotherm Models ◽  
Heavy Metals Removal ◽  
Adsorption Mechanisms ◽  
Body Tissues ◽  
Metals Removal

Effluents from essential industries have been characterized with heavy metals which are non-biodegradable in nature and also detrimental to health when accumulated in body tissues over long exposure. Adsorption was proved as the best efficient process amongst others to remove these heavy metals from industrial wastewater due to its excellent features. Activated carbons from nanoparticles of agricultural wastes such as pods, shells, husks, peels, shafts and many prepared via calcination process at high temperature can be used as active adsorbent for the industrial wastewater treatment involving heavy metals removal. This chapter discusses heavy metals in industrial wastewater effluents and potential agro wastes from which nanoparticles of activated carbon for industrial wastewater purification could be generated. The transformation of agro wastes nanoparticles into activated carbons via calcination and their applications for heavy metals removal from industrial wastewater via adsorption were examined. Various characterization techniques to study the effects of calcination on structural, morphological and textural properties of activated carbon prepared from agro waste nanoparticles were also discussed. Various isotherm, kinetics, mechanistic and thermodynamics models to investigate the adsorptive nature of the process were presented. Error functions and algorithms for both the linear and non-linear isotherm models regression to affirm their fitness for prediction were presented. Lastly, proposed adsorption mechanisms of heavy metals removal from industrial wastewater using activated carbons from nanoparticles of agro wastes were presented.

Advances in Stress Factors of Aquatic Macrophytes in Polluted Water

2014 ◽  
Vol 675-677 ◽  
pp. 61-66
Author(s):  
Cui Ying Zhang ◽  
Li Ping Wang
Keyword(s):  
Heavy Metals ◽  
Aquatic Macrophytes ◽  
Suspended Sediments ◽  
Stress Factors ◽  
Research Progress ◽  
Polluted Water ◽  
Complex Relationship ◽  
Obvious Effect ◽  
Existing Problems ◽  
Nutritive Salt

Aquatic macrophytes are of significant importance for polluted water restoration.This paper reviews current research progress of stress factors for aquatic macrophytes growth and analyzes existing problems. Factors including nutritive salt, suspended sediments and deposited sediments had an obvious effect on aquatic macrophytes growth, and the impacts of light intensity, heavy metals, temperature and pH on the growth of aquatic macrophytes were little than that of the above factors. The problems existed in present researches were: dynamic and quantificational studies of the impacts of some stress factors on aquatic macrophytes growth were insufficient, there was lack of integrated investigations considering several factors which were of complex relationship.

The Research Progress on New Adsorbent of Dealing with Heavy Metal Pollution in Water

2014 ◽  
Vol 1065-1069 ◽  
pp. 1969-1972
Author(s):  
Lin Zhu ◽  
Mei Na Liang ◽  
Dao Lin Huang
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Activated Carbon ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Industrial Waste ◽  
Research Progress ◽  
Absorbent Material ◽  
The Future ◽  
Adsorbent Materials

With the increasing of industrialization, the heavy metals cause serious pollution of water in China. This paper reviewed the study of many kinds of new adsorbent materials remove heavy metal from pollution water, these new adsorbent including modification activated carbon, inorganic absorbent material, industrial waste, biological adsorbents and synthetic adsorbent, and pointed out the trend of development of the new adsorbent material application in the future.

Removal of Certain Heavy Metals from Brewery Wastewater Using Date Palm Seeds Activated Carbon

2018 ◽  
Vol 34 (1) ◽  
pp. 233-238 ◽  
Author(s):  
Theresa Ukamaka Nwakonobi ◽  
Samuel Baba Onoja ◽  
Hope Ogbaje
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Contact Time ◽  
Industrial Wastewater ◽  
Date Palm ◽  
World Health ◽  
Brewery Wastewater ◽  
Sorption Data ◽  
Adequate Treatment ◽  
Maximum Limit

Abstract. In Nigeria, most of the brewery industries discharge their wastewater directly into the water body without adequate treatment. Wastewater from the brewery processes contains some heavy metals which in this study, attempts were made to reduce their concentration using activated carbon. Batch studies were carried out using date palm seeds activated carbon in the removal of lead (Pb), chromium (Cr), and cadmium (Cd) ion from industrial wastewater under conditions such as contact time and adsorbent dosage. Pb and Cr concentration in the wastewater were brought within World Health Organization (WHO) maximum limit of 0.01 and 0.05 mg/L for water, respectively, at 60 min of contact time across all the considered adsorbent doses of 10×103, 20×103, 30×103, and 40×103 mg/L while Cd concentration was brought within the WHO maximum limit of 0.003 mg/L at 80 min of contact time using 30×103 mg/L of the adsorbent. The sorption data fitted well into Langmuir isotherm which was very suitable for describing the sorption equilibrium with high regression values (>0.98). This study showed that date palm seeds activated carbon is suitable for the adsorption of Pb, Cr, and Cd, and as such could be used as a cost effective adsorbent in the treatment of brewery and other industrial wastewater. Keywords: Activated carbon, Adsorbent dose, Adsorption, Brewery wastewater, Contact time, Date palm seeds, Heavy metals.

scholarly journals Analysis of the efficiency of industrial water purification from heavy metals with a carbon-containing sorbent

2021 ◽  
Vol 937 (4) ◽  
pp. 042055
Author(s):  
Elena Tzurikova ◽  
Alla Smolyanichenko ◽  
Anatoly Bondarenko
Keyword(s):  
Experimental Data ◽  
Heavy Metals ◽  
Activated Carbon ◽  
Industrial Wastewater ◽  
Industrial Water ◽  
Sorbent Surface ◽  
X Ray ◽  
Research Material ◽  
Mining Enterprise ◽  
Sorption Method

Abstract The article presents the results of determining the efficiency of removing heavy metals from industrial wastewater by the sorption method using the “charge”, which is a waste of a coal mining enterprise, as well as activated carbon. Also, in addition to experimental data, the research material contains photographic materials of the sorbent surface and the result of its X-ray spectroscopy.

scholarly journals Research on the Evaluation of Ecological Assets Loss in Railway Construction Project Route Selection

2020 ◽  
Vol 145 ◽  
pp. 02038
Author(s):  
Liu Min ◽  
Shi Huansheng ◽  
Ji Chunlei ◽  
Chen Xiaqing
Keyword(s):  
Environmental Protection ◽  
Construction Projects ◽  
Evaluation Index System ◽  
Research Progress ◽  
Current Status ◽  
Future Research ◽  
Route Selection ◽  
Existing Problems ◽  
Railway Construction ◽  
Selection Of

At present, the route selection of railway construction projects from the perspective of environmental protection fails to objectively and comprehensively reflecting environmental protection requirements. Therefore, incorporating ecological asset assessment into the route selection of railway construction projects is conducive to promoting environmental protection to participate in railway route selection and improve railway route selection. This article summarizes the current status of railway route selection, identifies the existing problems in railway environmental route selection, and combines the research progress of ecological asset assessment, and proposes the assessment content and evaluation index system of ecological asset assessment in railway environmental route selection, and points out the future research prospects.

Research Progress of Magnetic Particle of Magneto-Rheological Fluid

2014 ◽  
Vol 971-973 ◽  
pp. 255-257
Author(s):  
Shang Liu ◽  
Xiao Long Zhang
Keyword(s):  
Magnetic Particles ◽  
Development Trend ◽  
Research Progress ◽  
High Coercivity ◽  
Large Temperature ◽  
Preparation Methods ◽  
Structure And Property ◽  
Existing Problems ◽  
Magneto Rheological ◽  
Physical And Chemical

Themagnetic particles in magneto-rheological fluid should have high coercivity,low proportion, and higher stability in a large temperature range. Based onthese, the article summarizes the characteristics, the development process andvarious physical and chemical preparation methods of magnetic particles, andpoints out the existing problems, and looks forward to the development trend ofpreparation methods, structure and property mechanism of magnetic particles.

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