{'fraction_non_alphanumeric': 0.02107598447032723, 'fraction_numerical': 0.0033277870216306157, 'mean_word_length': 5.285714285714286, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Modification and Physiochemical Characterization of Kaolin Clay for Adsorption of Pollutants from Industrial Paint Effluent

The design of wastewater treatment methods is usually based on the need to reduce heavy metals and suspended solid loads to limit pollution of the environment. The quality of treated effluent used in agriculture has a great influence on the operation and performance of the wastewater-soil-plant or aquaculture system. In the case of irrigation, the required quality of effluent is dependent on the crops to be irrigated, the soil conditions and the system of effluent distribution adopted. The present study is aimed to provide a healthy and better environment for both man and aquatic bodies. In this study, Nsu clay was modified by thermal and alkaline process for the removal of heavy metals and organic pollutants from industrial paint effluent. The modified clay was used to purify effluent from paint industry through a process involving coagulation for colour and sorption. The treated effluents were analyzed for the heavy metal concentration such as chromium, potassium, lead, magnesium, manganese, iron, cobalt, sodium, silver, mercury and cadmium. Furthermore, some gross organic pollution indicators such as biological oxygen demand (BOD) and chemical oxygen demand (COD) as well as pH, acidity, alkalinity, turbidity, hardness and total dissolved solids (TDS) of the effluents were studied. It was found that percentage removal was over 60% for all the contaminants. The modified clay exhibited better performance when calcined at 750 o C with 4M NaOH. Application of the simple and low cost modification technique employed in this study makes kaolinite a co-effective adsorbent for removal of many organic and inorganic pollutants from industrial paint effluents.