Removal of Heavy Metals from Water and Wastewater Using Moringa oleifera

One of the contaminants in wastewater is the heavy metals. Treatment of heavy metals is of great importance because they can be harmful and dangerous for human being health. Conventional removal methods used include: ultrafiltration, reverse osmosis, ion exchange, solvent extraction, sedimentation, and chemical precipitation, and each method has some disadvantages besides high costs. In this chapter, Moringa oleifera cake residue, Moringa oleifera press cake, and Moringa oleifera leaves are introduced as a proposed alternative to replace conventional methods for heavy metal ions’ removal. The results of using Moringa oleifera cake residue showed that iron (Fe) was fully removed; copper (Cu) and cadmium (Cd) were successfully removed up to 98% and reduction of lead (Pb) of 82.17%. The heavy metals were successfully reduced using Moringa oleifera press cake. The removal percentage of iron, copper, and chromium reached 69.99%, 88.86%, and 93.73%, respectively. Moringa oleifera leaves were used to remove Cd (II) from synthetic water; the optimization was performed and each parameter was affecting the Cd (II) removal with different percentages, but pH was insignificant. As a conclusion, the Moringa oleifera seeds and leaves can be considered as a promising alternative in water treatment for heavy metal ions removal.

Husbandry waste derived coralline-like composite biomass material for efficient heavy metal ions removal

Bioresource Technology ◽

10.1016/j.biortech.2021.125408 ◽

2021 ◽

pp. 125408

Author(s):

Yanchen Zhu ◽

Xin Wang ◽

Zilong Li ◽

Yunxiang Fan ◽

Xujing Zhang ◽

...

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Heavy Metal Ions ◽

Divalent heavy metal ions removal from contaminated water using positively charged membrane prepared from a new carbon nanomaterial and HPEI

Chemical Engineering Journal ◽

10.1016/j.cej.2020.124192 ◽

2020 ◽

Vol 388 ◽

pp. 124192 ◽

Cited By ~ 12

Author(s):

Maryam Ahmadzadeh Tofighy ◽

Toraj Mohammadi

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Heavy Metal Ions ◽

Contaminated Water ◽

Carbon Nanomaterial ◽

Charged Membrane ◽

Positively Charged ◽

Micro/nanostructural silica/alkali-treated natural zeolite coated fabrics for oil-water separation and heavy metal ions removal

Microporous and Mesoporous Materials ◽

10.1016/j.micromeso.2021.111430 ◽

2021 ◽

Vol 327 ◽

pp. 111430

Author(s):

Cheng Wang ◽

Huidong Guo ◽

Jiale Yu ◽

Kai Feng ◽

Jianfeng Huang

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Natural Zeolite ◽

Heavy Metal Ions ◽

Water Separation ◽

Oil Water Separation ◽

Oil Water ◽

Coated Fabrics ◽

Preparation and characterization of cellulose-based adsorbent and its application in heavy metal ions removal

Carbohydrate Polymers ◽

10.1016/j.carbpol.2018.11.059 ◽

2019 ◽

Vol 206 ◽

pp. 837-843 ◽

Cited By ~ 36

Author(s):

Jian Wang ◽

Min Liu ◽

Chao Duan ◽

Jianpeng Sun ◽

Yaowei Xu

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Heavy Metal Ions ◽

Nanocelllulose Based Adsorbents for Heavy Metal Ions Removal

10.21203/rs.3.rs-594942/v1 ◽

2021 ◽

Author(s):

Rongrong Si ◽

Daiqi Wang ◽

Yehong Chen ◽

Dongmei Yu ◽

Qijun Ding ◽

...

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Heavy Ions ◽

Metal Ion ◽

Heavy Metal Ions ◽

High Performance ◽

Advanced Technologies ◽

Good Biocompatibility ◽

Abstract Heavy metal ion pollutions are of serious threat for our human health, and advanced technologies on removal of heavy metal ions in water or soil are in the focus of intensive research worldwide. Nanocellulose based adsorbents are emerging as an environmentally friendly appealing materials platform for heavy metal ions removal as nanocellulose has higher specific surface area, excellent mechanical properties and good biocompatibility. In this review, we briefly compare the differences of three kinds of nanocellulose and their preparation method. Then we cover the most recent work on nanocellulose based adsorbents for heavy metal ions removal, and present an in-depth discussion of the modification technologies for nanocellulose in assembling high performance heavy ions adsorbent process. By introducing functional groups, such as amino, carboxyl, phenolic hydroxyl, and thiol, the nanocellulose based adsorbents not only remove single heavy metal ions through ion exchange, chelation/complexation/coordination, electrostatic attraction, hydrophobic actions, binding affinity and redox reactions, but also can selectively adsorb multiple heavy ions in water. Finally, some challenges of nanocellulose based adsorbents for heavy metal ions are also prospected. We anticipate that the review supplies some guides for nanocellulose based adsorbents applied in heavy metal ions removal field.

Modified ion exchange jackfruit seeds resin for removal of selected trace heavy metal ions from aqueous solution

African Journal of Pure and Applied Sciences ◽

10.33886/ajpas.v2i2.211 ◽

2021 ◽

Vol 2 (2) ◽

pp. 84-92

Author(s):

S N Ndung’u ◽

E W Nthiga ◽

R N Wanjau

Keyword(s):

Heavy Metal ◽

Ion Exchange ◽

Metal Ions ◽

Heavy Metal Ions ◽

Active Sites ◽

Ion Exchange Resin ◽

Standard Entropy ◽

Environmentally Sustainable ◽

Water is essential for every life processes. However, its quality is deteriorating every day due to the recent industrial advancements. Anthropogenic processes such as industrialization, mining and agricultural activities have led to alarming discharge of heavy metal ions to the aquatic bodies. This possess a greater threat to human, animal and the entire ecosystem wellbeing. Accumulation of heavy metal ions in drinking water beyond permissible limits is detrimental to human health. Therefore, their removal is paramount. Conventional remediation techniques have been employed but have remained expensive and not universally appropriate. This has therefore spurred research interests in the use of adsorption techniques from locally available materials as an environmentally sustainable alternative. Jackfruit seeds are discarded as wastes of a Jackfruit and can be utilized as an ion exchange resin in heavy metal ions removal from wastewater. The present study involved application of previously prepared raw and modified Jackfruit seed resins to study thermodynamics of copper (II), lead (II) and cadmium (II) ions adsorption from synthetic water. FTIR results showed presence of functional groups in raw and modified resins as important sites for studying thermodynamics of adsorption of copper (II), lead (II) and cadmium (II) ions. Thermodynamic data showed that standard Gibb’s free energy () values for all metals were negative indicating that adsorption process was feasible and favourable. Standard enthalpy change (), standard entropy () and activation energy () were positive (> 40 kJ mol-1) and in the order lead (II) > copper (II) > cadmium (II). This confirmed adsorption of copper (II), lead (II) and cadmium (II) ions onto both raw and modified resins was predominated by chemical interactions between the metal ions and the resin active sites. This was confirmed by very low values of sticking probability (S*). The findings indicated that ion exchange Jackfruit seeds resin is promising for heavy metal ions removal from wastewater in an optimized temperature controlled system.

Hydrophilic PVA-co-PE nanofiber membrane functionalized with iminodiacetic acid by solid-phase synthesis for heavy metal ions removal

Reactive and Functional Polymers ◽

10.1016/j.reactfunctpolym.2014.06.004 ◽

2014 ◽

Vol 82 ◽

pp. 98-102 ◽

Cited By ~ 34

Author(s):

Ying Lu ◽

Zhihong Wu ◽

Mufang Li ◽

Qiongzhen Liu ◽

Dong Wang

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Heavy Metal Ions ◽

Solid Phase Synthesis ◽

Solid Phase ◽

Iminodiacetic Acid ◽

Nanofiber Membrane ◽

Phase Synthesis ◽

A systematic study for removal of heavy metals from aqueous media using Sorghum bicolor: an efficient biosorbent

Water Science & Technology ◽

10.2166/wst.2018.190 ◽

2018 ◽

Vol 77 (10) ◽

pp. 2355-2368 ◽

Cited By ~ 5

Author(s):

Khalida Naseem ◽

Zahoor H. Farooqi ◽

Muhammad Z. Ur Rehman ◽

Muhammad A. Ur Rehman ◽

Robina Begum ◽

...

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Metal Ions ◽

Heavy Metal Ions ◽

Aqueous Media ◽

Review Article ◽

Isotherm Models ◽

Adsorption Efficiency ◽

Adsorption Isotherm Models ◽

Removal Of Heavy Metals

Abstract This review is based on the adsorption characteristics of sorghum (Sorghum bicolor) for removal of heavy metals from aqueous media. Different parameters like pH, temperature of the medium, sorghum concentration, sorghum particle size, contact time, stirring speed and heavy metal concentration control the adsorption efficiency of sorghum biomass for heavy metal ions. Sorghum biomass showed maximum efficiency for removal of heavy metal ions in the pH range of 5 to 6. It is an agricultural waste and is regarded as the cheapest biosorbent, having high adsorption capacity for heavy metals as compared to other reported adsorbents, for the treatment of heavy metal polluted wastewater. Adsorption of heavy metal ions onto sorghum biomass follows pseudo second order kinetics. Best fitted adsorption isotherm models for removal of heavy metal ions on sorghum biomass are Langmuir and Freundlich adsorption isotherm models. Thermodynamic aspects of heavy metal ions adsorption onto sorghum biomass have also been elaborated in this review article. How adsorption efficiency of sorghum biomass can be improved by different physical and chemical treatments in future has also been elaborated. This review article will be highly useful for researchers working in the field of water treatment via biosorption processing. The quantitative demonstrated efficiency of sorghum biomass for various heavy metal ions has also been highlighted in different sections of this review article.