Adsorption to Cu2+ in Waste Water with Chitosan Intercalation Bentonite

2013 ◽  
Vol 774-776 ◽  
pp. 733-736
Author(s):  
Zeng Xin Li ◽  
Guo Ming Wang ◽  
Qiang Liang ◽  
Xiao Feng Wang
Keyword(s):  
Waste Water ◽  
Pollution Control ◽  
High Efficiency ◽  
Adsorption Equilibrium ◽  
Ph Value ◽  
Low Cost ◽  
Mass Ratio ◽  
Industrial Waste Water ◽  
Value Range ◽  
Compound Adsorbent

The development of new water pollution control technology, particularly the development of high efficiency and low cost adsorbents is imperative. A compound adsorbent was prepared with the combination of chitosan and bentonite. Bentonite was added in chitosan slurry of 95% the degree of deacetylation to prepare adsorbent which mass ratio is 1:5. Its absorptivity toward Cu2+was studied. The results show: the dosage of the adsorbent is 14 g/L,the mass concentration of Cu2+in wastewater does not exceed 180 mg/L,the pH value range from 6 to7,the adsorption equilibrium time is about 9 h and Cu2+removal efficiency is over 97%.The low cost of adsorbents can be used to control industrial waste water containing copper.

scholarly journals Synthesis of Polyaniline Coating on the Modified Fiber Ball and Application for Cr(VI) Removal

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Xiao Li Ma ◽  
Guang Tao Fei ◽  
Shao Hui Xu
Keyword(s):  
Waste Water ◽  
Large Scale ◽  
Ph Value ◽  
Low Cost ◽  
Strong Acid ◽  
Removal Capacity ◽  
Secondary Pollution ◽  
Potential Possibility ◽  
Fiber Ball ◽  
Maximum Removal

Abstract In this study, polyaniline (PANI) is prepared by means of chemical oxidization polymerization and directly loaded on the modified fiber ball (m-FB) to obtain macroscale polyaniline/modified fiber ball (PANI/m-FB) composite, and then its removal ability of Cr(VI) is investigated. The effects of different parameters such as contact time, pH value and initial concentration on Cr(VI) removal efficiency are discussed. The experimental results illustrate that the favorable pH value is 5.0 and the maximum removal capacity is measured to be 293.13 mg g−1. Besides, PANI/m-FB composites can be regenerated and reused after being treated with strong acid. The kinetic study indicates that the adsorption procedure is mainly controlled by chemical adsorption. More importantly, the macroscale of composites can avoid secondary pollution efficiently. Benefiting from the low cost, easy preparation in large scale, environmentally friendly, excellent recycling performance as well as high removal ability, PANI/m-FB composites exhibit a potential possibility to remove Cr(VI) from industrial waste water. Graphic Abstract The polyaniline (PANI) was coated on modified fiber ball (m-FB) to remove Cr(VI) in waste water, and this kind of PANI/m-FB composites can avoid secondary pollution efficiently due to its macrostructure. Furthermore, the removal capacity can reach to 291.13 mg/g and can be multiple reused.

Sorption of heavy metals from industrial waste water by low-cost mineral silicates

Clay Minerals ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 469-477 ◽  
Author(s):  
A. Garcia Sanchez ◽  
E. Alvarez Ayuso ◽  
O. Jimenez de Blas
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Industrial Waste ◽  
Low Cost ◽  
Reaction Medium ◽  
Cost Effective ◽  
Industrial Wastes ◽  
Industrial Waste Water ◽  
Adsorption Processes ◽  
Mineral Silicates

AbstractThe adsorption by different silicate minerals of some heavy metals, present in industrial waste water, has been studied. These adsorbents (mainly clay minerals) are readily available, inexpensive materials and offer a cost-effective alternative to conventional treatment of wastes from the metal finishing industry. The results show that some mineral species are suitable for the purification of such residual waters down to the limits prescribed by current legislation concerning industrial wastes. The Langmuir model was found to describe such adsorption processes best. Sepiolite (Orera, Spain) has an adsorption capacity of 8.26 mg g-1 for Cd2+, the capacities depending on the metal adsorbed in the order: Cd2+ > Cu2+ > Zn2+ > Ni2+. This mineral shows the highest sorption capacity relative to the other minerals studied. Factors in the reaction medium such as pH and ionic strength influenced the adsorption process.

A Low-Cost and High-Efficiency Solution for Sugar Factory Waste Water Treatment

1991 ◽  
Vol 24 (1) ◽  
pp. 75-82 ◽  
Author(s):  
W. von der Emde ◽  
H. Kroiss
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
High Efficiency ◽  
Sugar Industry ◽  
Low Cost ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Operational Reliability ◽  
Sugar Factory ◽  
Treated Effluent

The main goals for the design of waste water treatment plants are high efficiency, high operational reliability and minimal costs. The challenge to have very low investment costs especially exists for industrial plants which are only in operation for several months every year as e.g. in the beet sugar industry in Central Europe. A case study of an Austrian sugar factory treatment plant shows that using very simple and low-cost structures does not affect the efficiency of the treatment. This factory is also one of the rare cases where biologically treated effluent is recirculated to reduce fresh water consumption. Special emphasis is put on the start-up process, the influence of shock loadings in the influent, and design and operation of the plant.

Synthesis and Arsenic Removal on Ferruginous Manganese Ore Composite Materials

2012 ◽  
Vol 209-211 ◽  
pp. 2058-2062
Author(s):  
Yong Bing Huang ◽  
Jing Dong ◽  
Xian Juan Li ◽  
Li Li Wang ◽  
Ye Li ◽  
...  
Keyword(s):  
Composite Materials ◽  
Arsenic Removal ◽  
Adsorption Equilibrium ◽  
Ph Value ◽  
Removal Rate ◽  
Low Cost ◽  
Wet Granulation ◽  
Manganese Ore ◽  
Adsorption Effect ◽  
Roasting Temperature

Ferrum manganese composite materials (1-3μm) had been successfully synthesized by low-cost ferruginous manganese ore in wet granulation to treat the arsenic wastewater effectively. The experiment showed when the cement content was 10%, the amount of saw dust was 5% and roasting temperature was 250°C, the composite materials was able to meet the demand of the particles strength and the removal rates of As(Ⅲ) and As(Ⅴ) were up to 85.25% and 80.13% respectively. The analysis for the materials of adsorption effect factors indicated as pH value increased, the removal rate reduced. The temperature was in an opposite way. Within 0-40min, the adsorption of arsenic became better and better. After 60min, the process basically reached the adsorption equilibrium. In addition, the removal rate also reduced following with the increasing dosing quantity of SO42- and HPO42-. Especially the HPO42- influenced it heavily. Therefore, it was important to control the content of HPO42- for the arsenic removal.

scholarly journals Research on the Technology of Recovering Low Concentration Ni+ Metal Ion Solution

2021 ◽  
Author(s):  
Huige Chen ◽  
Hangyu Chen ◽  
Kechi Chen ◽  
Xinda Wu ◽  
Wanyu Zheng ◽  
...  
Keyword(s):  
Inorganic Chemistry ◽  
Chemical Industry ◽  
Metal Ion ◽  
High Efficiency ◽  
New Technologies ◽  
Ph Value ◽  
Low Cost ◽  
Strong Discontinuity ◽  
Low Concentration ◽  
Recycling Systems

Under environmentally friendly and environmental issues, wastewater treatment in laboratories and factories is an important international issue. Among them, wastewater from the chemical industry accounts for a large part of industrial wastewater discharge. The introduction of new technologies to treat chemical wastewater is of great significance. In particular, the amount of wastewater produced by inorganic chemistry experiments is relatively large, and the pollutants are mostly heavy metal salts. According to the characteristics of inorganic chemistry experimental wastewater, such as special nature, small amount, strong discontinuity, high hazard, complex and changeable composition, etc., design a chemical reaction to provide a practical and feasible method to treat wastewater with high efficiency and low cost. This research initially takes Ni+ metal ion waste liquid as the first stage of recycling and treatment to improve the traditional low-concentration non-economic treatment. The preliminary results of this research are neutralization reaction and optimal pH value control of Ni+ waste liquid to generate Ni+ precursors to increase the economic value of recycling will be the basis for providing in-house recycling systems for electroplating plants, panel plants, and semiconductor plants to achieve emission reduction, green chemical industry and green environmental protection.

scholarly journals An Experimental Study for the Remediation of Industrial Waste Water Using Combination of Low Cost Mineral Raw Materials

2019 ◽  
Author(s):  
Petros Petrounias ◽  
Aikaterini Rogkala ◽  
Panagiota P. Giannakopoulou ◽  
Basilios Tsikouras ◽  
Paraskevi Lampropoulou ◽  
...  
Keyword(s):  
Waste Water ◽  
Continuous Flow ◽  
Mine Drainage ◽  
Raw Materials ◽  
Low Cost ◽  
Raw Material ◽  
Industrial Waste Water ◽  
Mineral Raw Materials ◽  
Ph Values ◽  
The Impact

This paper investigates an alternative use of sterile aggregate materials which may arise from various construction applications in conjunction with other low-cost mineral raw materials to remediate the acid mine drainage phenomenon. This study is based on the combination of unprocessed mineral raw materials as well as on the basic concept of the cyclic economy where the conversion of a waste into a raw material for another application can be achieved. In this way, the value of mineral raw materials can be prolonged for as long as possible, waste generation and exploitation of natural resources are minimized and resources are kept as far as possible within the existing economy. In this study, an electrically continuous flow driven forced device proposed and demonstrated for the remediation of waste water in lab-scale by using certain mixes of mineral raw materials (serpentinite, andesite, magnesite, peat and biochar). Our results focus on the impact of the studied mineral raw materials and especially on their synergy on the water purification potential under continuous water flow operation. Using the proposed 7-day experimental electrically continuous flow driven forced device with the certain mixes of mineral raw materials, the increase of pH values from 3.00 to 6.82 as well as significant removal of Fe, Cu and Zn was achieved.

scholarly journals Synthesis of polyaniline coating on the modified fiber ball and application for Cr(VI) removal

2021 ◽  
Author(s):  
Xiao Li ◽  
Guang Tao Fei ◽  
Shao Hui Xu
Keyword(s):  
Large Scale ◽  
Ph Value ◽  
Low Cost ◽  
Strong Acid ◽  
Industrial Waste Water ◽  
Removal Capacity ◽  
Secondary Pollution ◽  
Potential Possibility ◽  
Fiber Ball ◽  
Maximum Removal

Abstract In this study, polyaniline (PANI) is prepared by means of chemical oxidization polymerization and directly loaded on the modified fiber ball (m-FB) to obtain macroscale polyaniline/modified fiber ball (PANI/m-FB) composite, and then its removal ability of Cr(VI) is investigated. The effects of different parameters such as contact time, pH value and initial concentration on Cr(VI) removal efficiency are discussed. The experimental results illustrate that the favourable pH value is 5.0 and the maximum removal capacity is measured to be 293.13 mg·g-1. Besides, PANI/m-FB composites can be regenerated and reused after being treated with strong acid. The kinetic study indicates that the adsorption procedure is mainly controlled by chemical adsorption. More importantly, the macroscale of composites can avoid secondary pollution efficiently. Benefiting from the low cost, easy preparation in large scale, environmentally friendly, excellent recycling performance as well as high removal ability, PANI/m-FB composites exhibit a potential possibility to remove Cr(VI) from industrial waste water.

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