Aniekan Akpakpan

AKWA IBOM STATE UNIVERSITY , NIGERIA · DEPARTMENT OF CHEMISTRY

This work evaluates the potentials of a secondary alcohol as environmentally friendly pulping liquor for Nypafrutican petioles. The pulping was done at 120 o C and 150 o C with a pulping liquor-to-sample ratio of 10:1. The effects of pulping temperature, pulping time and concentration of the pulping liquor on the pulp yield and residual Klasonligni...

Lignin, an amorphous biopolymer is one of the major components of wood. In this study, lignin was extracted from Gmelina arborea wood using Soda and Kraft pulping processes. The lignin was characterized using Fourier Transformed Infrared Spectrometer (FTIR), UV/visible spectrometer, electrospray ionization mass spectrometer and scanning electron mi...

Lignin is an amorphous polymer which is usually discarded as a waste material in pulp and paper industries. It is composed of three phenolic monomeric units which are coniferyl alcohol, sinapyl alcohol, and p-coumaryl alcohol. These monomeric units have several functional groups which can be modified into useful industrial products. In this present...

Synthetic indicators usually employed in acid-base titration to determine the end point is expensive and non-biodegradable. Hence there is need to develop an eco-friendly and cost effective acid-base indicator from plant origin to serve as efficient alternative for the synthetic indicators. This research work focused on the development of easily av...

In this study, analytical assessment of borehole water was carried out in selected non-oil producing Local Goverment Areas of Akwa Ibom State, Nigeria. The areas were Uyo, Itu, and Ibesikpo Asutan Local Government Areas. The sampling areas were divided into three (3) zones with nine (9) sampling sites. For Itu L.G.A., the sampling site were,Urua Ek...

In Nigeria, the most commonly used indicator for acid-base titration is synthetic indicator, which is non biodegradable when exposed to the environment. The need to develop acid-base indicators from natural sources to serve as an effective alternative for synthetic indicators is the demand for environment green chemistry. This research work is aime...

The aim of this study was to determine the levels of some trace metals in water from Cross River estuary (CRE) and estimate the human health risk associated with water from the estuary via ingestion pathway and dermal contact. The trace metals in water were determined using atomic absorption spectrophotometer and the human health risk assessment of...

Proximate composition of Callinectes sapidus (blue crab), procambarus clarkii (cray fish) collected from Mkpanak area of Qua Iboe River, Ibeno local government area of Akwa Ibom State, was evaluated. Proximate composition of the samples were determined in triplicate and the mean result showed that Callinectes sapidus has moisture content of (6.08 ±...

The physicochemical properties of the exudate of Dacryodes edulis and those of the saponification and acid hydrolysis products have been determined. The value of the purified exudate, acid hydrolysis product and saponification product where respectively: melting point (oC) (73.33, 62.20, and 60.33): flash point (oC) (110, 100,100): Charring point (...

Abstract: The activated carbon produced from Hura crepitans seed shell was effectively utilized as adsorbent for the removal of eosin red and malachite green from waste water. Thus the adsorption of eosin red, a typical acid dye and malachite green, a typical basic dye from synthetic waste water using Hura crepitans seed shell activated carbon was...

Total petroleum hydrocarbon (TPH) is of immense interest to environmental chemist because they are toxic to human system and animals. Some of the TPH compounds are carcinogenic and poses serious health problem to humans and aquatic life. Hence, there is need for continuous check of the level of TPH in the communities in Niger Delta region of Nig...

Physiochemical characterization of oil extracted from two varieties of palm kernel oil was carried out

Dicliptera verticillata is an underutilized medicinal plant that grows in Akwa Ibom State South-South Nigeria. Ethanol and aqueous extracts of the leaves are sometimes used for the treatment of malaria. The phytochemical compositions of the ethanol and aqueous extract of the leaves were investigated using established analytical procedures. The qual...

Irvingia gabonensis seed shells were converted into activated carbon using ZnCl 2 as the activating agent and used for the adsorption of methylene blue (MB) and malachite green (MG) from aqueous solution. Batch adsorption experiments were conducted to investigate the effects of adsorbate concentration (50-250 mg/l), adsorbent particle size (0.05-1....

Fried groundnut oil was obtained from a commercial chin-chin seller. The same product (king's oil) was bought from a commercial market in Uyo, Akwa Ibom State. Air dried additives (orange peels) were cut into chips, different quantity were added to the fried oil and heated to 60 o C for 10min. The additive was filtered from the fried oil. The fresh...

ABSTRACT Activated carbons were prepared by carbonization and activation of Coula eludis seed shells. This was done using ZnCl2 as the activating chemical and the activation was done using sample to activating chemical ratios of 1: 10 and 1:20 (g/v). The activated carbon obtained were characterized by determining the percentage yield, moisture cont...

Activated carbons were prepared by carbonization and activation of Coula eludis seed shells. This was done using ZnCl2 as the activating chemical and the activation was done using sample to activating chemical ratios of 1: 10 and 1:20 (g/v). The activated carbon obtained were characterized by determining the percentage yield, moisture content, ash...

The occurrence of crude oil in the Niger Delta with its concomitant petroleum industrialization has resulted in generation of enormous waste products. Also spilled oil produces deleterious effect on both flora and fauna. As such human daily activities and means of survival are dependent on the environment in which they live; hence there is need for...

Activated carbons were thermally prepared from Hura Crepitan L. seed shells. Zinc chloride (ZnCl2) and Phosphoric acid (H3PO4) were separately used as the activating agents. The activated carbons obtained were characterized by determining the percentage yield, moisture content, ash content and percentage fixed carbon. The adsorption of methylene bl...

This work investigates the potentials of methanol and acetone extracts of leaves Dissotis rotundifolia, Centrosema pubescensand Allium cepa bulb as indicators for acid-base titration. Each extract was used in the titration of H 2 SO 4 vs NaOH, H 2 SO 4 vs NH 4 OH, CH 3 COOH vs NaOH, and CH 3 COOH vs NH 4 OH. S tandard indicator (phenolphthalein) wa...

Corrosion inhibition of low-carbon steel in stagnant aerated 0.1 M HNO3 solutions by 4-[(4-dimethylaminophenyl)phenylmethyl]-N, N-dimethylaniline (44MPNA) was studied using classical (gravimetric and gasometric) methods at 30 and 60 oC. It was found that this triphenylmethane compound inhibited the corrosion of steel in this acidinduced condition....

Two agricultural wastes, the aerial stem of Musa paradisiaca (plantain pseudostem) and the leaves of Pandanus candelabrum (screw pine) were characterized and pulped by soda and Kraft processes. The pulps were bleached with hydrogen peroxide and handsheet was formed with the British sheet former. The results showed that the plantain stem fibre has a...

exudates of Dacryoides edulis was used as paper sizing agent and in the preparation of candle

The Phytochemical, proximate and mineral element composition of the stem of Costus afer were investigated. Phytochemical analysis revealed the presence of saponins, alkaloids, glycosides, tannins, and steroids. The proximate composition indicated the following; moisture (33.6 %), crude fat (2.48 %), crude protein (14.02 %), carbohydrate (20.14 %),...

The Physicochemical properties and mineral element composition of exudates from Raffia palm (Raphia hookeri) were investigated. The proximate composition of the exudates shows that it contains moisture (90.14%), crude protein (2.5%), ash (9.5%), crude fat (2.64%), crude fiber (0.00%), carbohydrate (85.4%) and calorific value (375kcal/100g). Mineral...

The physicochemical properties of plantain (Musa paradisiaca) and banana (Musa sapientum) pseudostem wastes have been determined. It was found that the average moisture content for both samples were very high while the concentrations of solubles in both cold and hot water were moderate, the concentrations of the solubles of the pulverized pseudoste...

Proximate composition, mineral elements, anti-nutrients (toxicants) and lipid characteristics were determined for almond {Terminalia catappa) seeds. The results obtained showed the proximate composition of 25.23% moisture; 5.00% ash; 32.73% lipid; 33.66% crude fibre; 3.11% crude protein; 25.47% carbohydrate and caloric value 534.200 kcal. Mineral e...

Abstract: Queen, soldiers and workers of termites (Macrotermes bellicosus) were analyzed for proximate composition, vitamin, mineral elements and anti-nutrient content. Proximate composition showed that crude protein content of the soldiers was higher than those of workers and Queen. The highest mineral element was sodium in queen, while the least...

The effect of lime on some physicochemical characteristics of palm oil was studied by altering the amount of lime additives to a fixed volume of the oil sample. The parameters analyzed were density, viscosity, moisture content, saponification value, iodine value and peroxide value. The mean values of the physicochemical parameters ranged from 0.894...

The effect of iodide ions addition on the mild steel corrosion inhibition in 1 M HCl by Cocos nucifera coir dust extract was studied using weight loss and hydrogen evolution methods at 30 and 60 o C. It was found that the extracts of Cocos nucifera coir dust extract inhibited the corrosion of mild steel in this acid induced condition but the additi...

Soda pulp and sulphate (kraft) pulp were prepared from Nypa palm leaves while cellulose triacetate and diacetate were prepared from the resultant pulps by acetylation with acetic acid anhydride in the presence of sulphuric acid (as a catalyst). For pulp preparation, the leaves were separated into raffia (surface film), lamina and midrib. The soda (...

Termitarium (mound) soils of Macrotermes bellicosus from two termitaria were analyzed for mineral elements, and control soil samples obtained from a remote forest were also analyzed. Fungal combs from the same Termitarium were analyzed for proximate composition, anti-nutrient content and some mineral elements. Mineral elements determination showed...

African star apple fruit is an edible fruit. Its peel, pulp and seed were analyzed to determine the proximate composition and mineral elements. The results showed that the Pulp contain greater amount of crude fibre, fat, ash and caloric value, while greater amount of moisture was found in the peels. Carbohydrate content and crude protein was higher...

This paper is concerned with the application of wood and paper chemistry to the industrialization of the Nigeria's economy. Wood which is the base material and the mother of pulp and paper products is discussed based on the chemical products, and the role of chemistry in the industrialization of Nigerian pulp and paper industries is also discussed....

The influence of cooking variables on the soda and soda-ethanol pulping of Nypa fruticans petioles is evaluated. The raw materials were characterised to know its properties. The solubility in cold and hot water, 1% NaOH and ethanol-benzene were determined. Lignin, cellulose and ash content were also estimated. The effect of the pulping time (10 to...